CN106049754B - The assembled section of the standard of assembly concrete combined column and the combined column being made up of assembly section - Google Patents

Abstract

The invention discloses a standard assembly section of a prefabricated concrete composite column and a composite column composed of the assembly section. The standard assembly section includes a single-layer section frame in a single-layer section column, and the single-layer section frame includes a main steel frame and a steel frame. The reinforcement cage arranged in the main steel frame, the present invention also includes steel nodes as prefabricated components, the steel nodes are fixed on the top and/or bottom of the single-layer segmented frame, forming a columnar steel skeleton with the single-layer segmented frame , There is an upper and lower concrete pouring channel inside the steel skeleton, which is used to splice and fix multiple standard assembly joints up and down during on-site construction before pouring concrete to build a prefabricated concrete composite column. The present invention, as a standard assembled section of a prefabricated component, is light in weight, easy to transport, greatly reduces transport costs, improves the safety of transport and construction, and can also greatly reduce the installation workload of a prefabricated concrete composite column on the premise of ensuring the performance of the composite column. Improve the construction efficiency of prefabricated assembly columns.

Description

The standard assembly joint of the prefabricated concrete composite column and the composite joint formed by the assembly joint Hezhu

technical field

The invention relates to a building structural member in the technical field of construction engineering, in particular to a standard assembly joint for constructing an assembled concrete composite column, and also to an assembled composite column composed of the standard assembly joint.

Background technique

The General Office of the State Council promulgated "Several Opinions on Promoting Housing Industrialization and Improving Housing Quality" in 1999. On January 1, 2013, in the form of 2013 No. 1 document, the National Development and Reform Commission and the Ministry of Housing and Urban-Rural Development "Green Building Action Plan" (State Council Attachment 1 of Banfa [2013] No. 1), the document focuses on fully understanding the implementation of green building actions, and lists "promoting the industrialization of construction" as one of the ten important tasks.

At present, the structural columns used in buildings in various places mainly include cast-in-place reinforced concrete columns, prefabricated reinforced concrete columns, steel pipe concrete columns and steel concrete columns.

Cast-in-situ reinforced concrete columns need to complete the process of formwork support, reinforcement cage fabrication and installation, concrete pouring and curing, etc., which requires a large amount of on-site construction and a long construction period.

In the existing prefabricated reinforced concrete columns, only the middle single-layer segmental column is prefabricated, and the prefabricated part also includes a poured concrete structure, and the column longitudinal bars anchored in the concrete protrude from both ends of the column. The connection nodes between the layer segmental columns need to be constructed on site. Compared with the cast-in-place reinforced concrete column, the concrete column of this structure can shorten the construction period, but because the concrete is prefabricated in the single-layer segmented column, the weight and volume are large, and the transportation and installation workload is relatively large. The security of the installation is poor.

Like the prefabricated reinforced concrete columns, the connection nodes of the current steel pipe concrete columns and steel concrete columns are also prefabricated on site, and the structural columns of this structure use a lot of steel and are expensive.

Contents of the invention

The first object of the present invention is to provide a standard assembled section for constructing prefabricated concrete composite columns, which adopts the steel frame of prefabricated single-layer sectioned column, that is, the single-layer section frame, and the single-layer section The bottom and/or top of the frame is provided with standardized connecting steel nodes, as a prefabricated component of the prefabricated concrete composite column, which can not only meet the performance requirements of the composite column, but also quickly carry out the combined installation of the composite column, further shortening the construction period. Reduce construction costs, and greatly reduce the weight of prefabricated components, facilitate transportation and save transportation costs, and improve transportation and construction safety.

The second object of the present invention is to provide a prefabricated concrete composite column assembled by the standard assembly joints, the composite column is directly spliced and fixed by a plurality of the standard assembly joints up and down and cast-in-place concrete It can save the process of constructing connection nodes between columns on site, and the construction volume on site is small and the construction period is short.

The first object of the invention of the present invention is achieved through the following technical solutions: a standard assembled section of a prefabricated concrete composite column, including a single-layer section frame in a single-layer section column, and the single-layer section frame includes a main steel frame and The reinforcement cage arranged in the main body steel frame is characterized in that the present invention also includes a steel node as a prefabricated component, and the steel node is fixed on the top and/or bottom of the single-layer segmented frame, and is connected with the The single-layer segmented frame forms a columnar steel skeleton, and the steel skeleton has an upper and lower connected concrete pouring channel, which is used to splice and fix a plurality of the standard assembly joints up and down during on-site construction. Concrete is poured to construct fabricated concrete composite columns.

The standard assembly section of the present invention is a prefabricated component of a prefabricated concrete composite column. The prefabricated component does not need to pour concrete in advance. The composite column adopts a fully assembled form. After splicing and fixing a plurality of standard assembly sections on site, the concrete is poured on site. , because the sectioned columns and nodes are prefabricated components, the connecting nodes are added on the basis of the single-layer sectioned frame of the prior art, so the process of building nodes on site can be omitted, and the amount of on-site construction can be greatly reduced. The construction period is greatly shortened; and the prefabricated components are only steel structural components, and the weight is greatly reduced. The single-layer segmented column of the present invention only has a prefabricated steel skeleton, and the concrete inside the column is poured on site, so the transportation cost can also be significantly reduced.

As a preferred embodiment of the present invention:

In order to save the amount of steel and reduce the cost, the single-layer segmented frame includes a main steel frame, and the main steel frame is composed of steel hoops and a number of support plates and/or corners arranged vertically to form a columnar structure at intervals Composed of components, the angle of the corner component corresponds to the angle between the intersecting two sides of the columnar structure, the support plate is a steel frame component of the vertical column facade of the columnar structure, and the steel hoop plate is connected to each other Adjacent said struts and/or corner members are shaped to form a steel frame.

The reinforcement cage in the single-layer segmented frame of the present invention is fixed on the inner wall of the main body steel frame, and several longitudinal columns and longitudinal reinforcements are arranged axially along the column longitudinal reinforcements, which are used to connect several columns It is composed of several horizontal column stirrups that are gathered together. The column longitudinal bars are arranged along the inner wall of the main steel frame in the circumferential direction. Consistent column shape, both ends of the column longitudinal bars of the reinforcement cage protrude from the main body steel frame.

The steel nodes include column bottom node connectors and beam-column node connectors for strengthening the bottom and top structures of the single-layer segmented frame respectively, and the column bottom node connectors and beam-column node connectors are respectively fixed on The bottom end and top end of the single-layer segmented frame, the column bottom node connectors and the beam-column node connectors are all made of steel cylinders whose size is suitable for the cross-sectional shape of the main steel frame and arranged on the steel The steel frame of the main body is composed of stiffeners in the tube, and the steel frame of the main body is butt-welded with the steel tube of the column bottom node connector and the steel tube of the beam-column node connector at the bottom and top respectively, and the steel frame of the main body is pierced The column longitudinal reinforcements at both ends of the frame extend into the column bottom node connector and the beam-column node connector respectively, and are welded on the inner walls of their steel cylinders, and the standard assembled joint passes through the column bottom node connector It is connected with the standard assembled joint of the lower floor, and connected with the column bottom joint of the standard assembled joint of the upper floor through the beam-column joint connecting piece, or connected with the beam structure of the current floor.

The single-layer segmented frame of the present invention adopts the design of the frame-type main body steel frame enclosing the steel cage, which not only reduces the consumption of steel materials, but also makes the column have strong bearing capacity, good stability, high bending and shearing resistance, and has an anti-seismic effect. The upper and lower ends of the single-layer segmental frame with reinforcement cages in the steel frame are respectively provided with column bottom node connectors and beam-column node connectors, so that the standard assembled joints of the present invention form a stable steel frame at the column body, column bottom, and top. system.

As a further improvement of the present invention:

The single-layer segmented column also includes a finished plate, the finished plate is fixed on the side of the main steel frame, closes the side wall of the main steel frame, and forms an outsourcing module of the main steel frame, so that the The single-layer section frame itself becomes a casting form.

The present invention installs outsourcing modules on the side of the main steel frame of the single-layer segmented frame structure, so that the single-layer segmented frame itself becomes a pouring mold, so that the standard assembled joints of the present invention are spliced and fixed to pour concrete at the upper and lower sides to form a composite column During the on-site construction process, there is no need for additional formwork, which is conducive to further reducing the amount of on-site construction and shortening the construction period. In addition, the single-layer segmented frame of this structure makes the standard assembled joints of the present invention form a frame column structure with one side wall closed, which can well retain the water content of the cast-in-place concrete in the column, and can further save the need for concrete watering and maintenance. process.

As a further improvement of the present invention:

Finished boards are also fixed on the sides of the steel cylinders of the column bottom node connectors and beam-column node connectors, and the gaps between adjacent finished boards on the standard assembly joints are closed by lottery, forming a joint of the standard assembly joints. It is a standard assembled festival outsourcing template with a flat and smooth surface and a fireproof function wrapped in knots.

This structure makes the composite column of the present invention not only need no additional formwork support and demolition during the construction process, but also because the surface of the outsourcing formwork on the standard assembly joint is flat and smooth, and has the function of fire protection, so that the composite column constructed by the standard assembly joint of the present invention does not need to be rebuilt. Plastering and additional fireproof coating can further save construction cost and shorten construction period.

As an optional embodiment of the present invention:

The structure of the node connector at the bottom of the column is: the steel cylinder of the node connector at the bottom of the column is called the bottom steel cylinder, and longitudinal stiffeners are provided throughout the bottom steel cylinder;

The steel cylinder of the beam-column node connector is called the top steel cylinder, and longitudinal stiffeners are also provided through the top steel cylinder, and transverse stiffeners are also provided in the top steel cylinder;

The longitudinal stiffeners in the bottom steel cylinder and the top steel cylinder are all composed of several vertically arranged square steel plates, and the square steel plates are welded on the inner walls of different sides of the bottom steel cylinder or top steel cylinder through two sides. , the projections of the longitudinal stiffeners in the bottom steel cylinder and the top steel cylinder on the horizontal plane coincide;

The transverse stiffener is composed of a steel plate with a hole in the middle welded on the inner wall of the top steel cylinder, or a number of steel plates welded on the inner wall of the top steel cylinder in the circumferential direction to form a circle. The inner ring holes are formed in the middle of the several steel plates welded along the circumferential direction, and the openings and the inner ring holes constitute the pouring gate for the concrete to continue pouring downward;

The transverse stiffeners include at least two pieces, and the positions are respectively corresponding to the upper and lower flanges of the beam structure;

The longitudinal stiffeners in the top steel cylinder enclose several axially independent passages in the top steel cylinder, and the upper end of each passage passes through the sprue on the transverse stiffeners and the The concrete pouring channel is connected so that concrete can be poured to any position of the standard assembly joint.

The beam-column node connector of the present invention can be directly welded and fixed with the U-shaped beam. As shown in Figure 12, the U-shaped beam 5 is a U-shaped beam structure in longitudinal section, including a lower flange formed by a bottom plate 51, two opposite webs 52, and a lower flange, and the lower flange is respectively fixed on the two webs. The upper end of the plate 52 constitutes the two wing plates 53 that form the outward flange of the web 52 . The top of the U-shaped beam 5 is also fixed with a support additional flange n-shaped steel part 6 . The n-shaped steel part 6 of the additional flange of the support is composed of a top plate 61 and two opposite webs 62. The lower ends of the two webs 62 of the n-shaped steel part 6 of the additional flange of the support are connected with the upper ends of the two webs 52 of the U-shaped beam 5 and welded. Fixed, the additional flange n-shaped steel piece 6 of the support straddles the top of the U-shaped beam 5 .

When the beam-column node connector of the present invention is used to connect with U-shaped beams, as a preferred embodiment of the beam-column node connector of the present invention:

The top steel cylinder of the beam-column node connector is a square steel cylinder, and the longitudinal stiffeners inside it are well-shaped stiffeners;

The transverse stiffener in the top steel cylinder is a square steel plate whose size matches the internal size of the top steel cylinder and is welded around the circumference. There are three pieces, which are layered in the top steel cylinder from top to bottom. , are respectively called flange plate, upper plate and lower plate, and the span between the two parallel square steel plates in the well-shaped stiffener corresponds to the span between the two webs of the U-shaped beam;

When the U-shaped beam is welded on the outer wall of the top steel cylinder:

The flange plate and the top plate of the additional flange n-shaped steel part of the upper support of the U-shaped beam are opposite to each other through the top steel cylinder, and the two parallel square steel plates in the well-shaped stiffener are separated from the top steel cylinder, The two webs of the U-shaped beam and the two webs of the additional flange n-shaped steel part of the support are opposite, and the upper plate is opposite to the flange of the U-shaped beam through the top steel cylinder, so The lower plate is opposite to the bottom plate of the U-shaped beam through the top steel cylinder.

As the optimal scheme of the beam-column node connector:

The longitudinal stiffeners in the top steel cylinder also include auxiliary stiffeners, the auxiliary stiffeners are composed of four vertically arranged square ribs, and the square ribs are vertically welded to the centerline of the four inner walls of the top steel cylinder Between the square steel plates in the well-shaped stiffeners that are parallel to the corresponding inner walls, an auxiliary stiffener can be set to further increase the shear resistance of the core area of the node;

The upper end of the channel divided by the auxiliary stiffener in the top steel cylinder is also communicated with the concrete pouring channel through the pouring port on the transverse stiffener;

The square ribs at least run through the distance between the upper board and the lower board.

The second object of the present invention can be achieved by the following technical measures: a prefabricated concrete composite column composed of the standard assembly joints, the composite column is spliced and fixed by a plurality of the standard assembly joints up and down It is made of poured concrete, specifically, the upper steel node and the lower steel node that are spliced by two adjacent standard assembly joints are welded and fixed, and are connected by several structural bars anchored in the concrete, and the two ends of the structural bars are They are respectively inserted into the single-layer segmented frame of two adjacent standard assembly joints that are spliced, and the length inserted into the single-layer segmented frame is at least LaE, and LaE is the seismic anchorage length. The specific value of LaE can be obtained by checking Table gets.

The construction process of the assembled concrete composite column of the present invention is:

(1) Complete prefabricated assembly components in the factory: prefabrication of single-layer segmented frames and steel nodes;

(2) Transport the prefabricated assembly components to the site for welding and assembly;

(3) Pour the concrete in the column.

Compared with the prior art, the present invention has the following beneficial effects:

1) The assembled concrete composite column of the present invention adopts factory production of prefabricated components - standard assembly joints and its on-site assembly construction method: the standard assembly joints are pre-manufactured in the factory and then transported to the construction site. The assembly of multiple prefabricated components is completed by welding one standard assembly section, and finally the construction of the composite column can be completed by pouring concrete into the standard assembly section. Compared with the existing prefabricated reinforced concrete columns, not only the prefabricated components are lighter , easy to transport, greatly reduce transportation costs, improve the safety of transportation and construction; and can also greatly reduce the installation workload of prefabricated concrete composite columns under the premise of ensuring the performance of composite columns, thereby significantly improving the construction efficiency of prefabricated assembly columns , to meet the "four modernizations" requirements of construction industrialization, and form new technologies that match the requirements of construction industrialization in terms of industrial chain organization, technical qualifications, and economic accounting;

2) The vertical installation accuracy of the composite column of the present invention is low, and the splicing seam of the standard assembly joint is between the bottom of the upper column body and the top of the lower column body, even if the deviation is 2mm, it will not affect the appearance and use of the building, so the composite column of the present invention The column assembly is convenient and quick, and the vertical installation accuracy is low, so that the construction speed of the composite column of the present invention can be further greatly improved;

3) The single-layer segmented frame of the present invention adopts the steel frame inner-wrapped reinforced concrete column (consisting of steel cage and poured concrete) to jointly bear the force, not only the bearing capacity of the column is strong, the stability is good, the bending and shearing resistance is high, and it has the advantages of The anti-seismic effect also greatly saves the amount of steel and reduces the cost. Compared with ordinary concrete-filled steel tube columns, it saves more than half of the steel, which has obvious economic value; Steel joints are arranged at the top and the top to resist the shear force borne by the core area of the joints, so that the standard assembled joints of the present invention form a stable steel frame system at the column body, column bottom and top;

3) The present invention arranges the outsourcing formwork outside the standard assembling section, so that the side wall of the standard assembling section is closed, and becomes a pouring form, and the surface of the outsourcing formwork is smooth and smooth, and has the function of fire prevention, so that the composite column constructed by the present invention can be used in the construction process. There is no need for formwork support, formwork removal, concrete watering and maintenance, and no need for plastering and additional fireproof coatings, which is conducive to saving construction costs and further shortening the construction period;

4) When pouring concrete into the standard assembled section of the present invention, the concrete can be poured into any position inside the standard assembled section, so that the steel frame can be more effectively combined with the inner-wrapped reinforced concrete column and the outer-wrapped formwork, which is conducive to further improving the bearing capacity of the column and stability; the single-layer segmented frame of the present invention adopts steel frame, inner-wrapped reinforced concrete column, and outer-wrapped finished slab to be integrally cast and formed. Improve the overall stiffness of the prefabricated high-rise building structure system;

Description of drawings

The following are related drawings of specific embodiments of the present invention, and the following specific embodiments will further describe the present invention in detail in conjunction with specific embodiments of the present invention and corresponding drawings.

Fig. 1 is a schematic diagram of the interlayer installation structure of a plurality of standard assembly joints of a composite column according to Embodiment 1 of the present invention;

Fig. 2 is the schematic diagram of the structural reinforcement connection method of two adjacent standard assembly joints of embodiment one;

Fig. 3 is a schematic front view of the structure of a standard assembly joint connected to the beam member of Embodiment 1 (reinforcement cage omitted);

Fig. 4 is the cross-sectional view of the main steel frame of the single-layer segmented column at the A-A position in Fig. 3;

Fig. 5 is A-A sectional view of Fig. 3;

Fig. 6 is a cross-sectional view of the column bottom node connector at the D-D position in Fig. 3 omitting the outsourcing formwork;

Fig. 7 is a D-D sectional view among Fig. 3;

Fig. 8 is a cross-sectional view at the lower plate of the beam-column node connector at the B-B position in Fig. 3;

Fig. 9 is the B-B sectional view among Fig. 3 (comprising the schematic diagram that is connected with the beam structure);

Fig. 10 is a cross-sectional view at the upper plate of the beam-column node connector at position C-C in Fig. 3;

Fig. 11 is the C-C sectional view among Fig. 3 (comprising the schematic diagram that is connected with the beam structure);

Fig. 12 is a U-shaped beam cross-sectional schematic diagram with an additional flange n-shaped steel part of the support;

Fig. 13 is a transverse cross-sectional view of a single-layer segmented column of a standard assembled section according to Embodiment 2 of the present invention;

Fig. 14 is a transverse cross-sectional view at the position of the lower plate of the beam-column joint connector of the standard assembled joint according to the second embodiment of the present invention;

Fig. 15 is a transverse cross-sectional view at the position of the upper plate of the beam-column joint connector of the standard assembled joint according to the second embodiment of the present invention;

Fig. 16 is a transverse cross-sectional view of the column bottom node connector of the standard assembled joint according to the second embodiment of the present invention;

Fig. 17 is a transverse cross-sectional view of a single-layer segmented column of a standard assembled section according to Embodiment 3 of the present invention;

Fig. 18 is a transverse section at the lower plate of the beam-column joint connector of the standard assembled joint according to the third embodiment of the present invention;

Fig. 19 is a transverse cross-sectional view at the upper plate of the beam-column node connector of the standard assembled joint according to the third embodiment of the present invention;

Fig. 20 is a transverse cross-sectional view of the connecting piece of the column bottom node of the standard assembled joint according to the third embodiment of the present invention.

Detailed ways

Embodiment one

The standard assembly section in the first embodiment shown in Figures 1 to 12 is a square column.

Fig. 1 is a schematic structural view of the composite column of Embodiment 1 of the present invention. As shown in Fig. 1, the composite column of this embodiment is formed by splicing and fixing the upper and lower parts of the standard assembly section 1 assembled from prefabricated components and casting concrete . The ends of two adjacent standard assembled sections 1 are welded and fixed, and are connected by several structural bars 2 anchored in the concrete, and the two ends of the structural bars 2 respectively extend into the single-layer section frame 11 ( hereinafter mentioned), as shown in Figure 2, the length extending into the single-layer segmented frame 11 is at least LaE, and LaE is the seismic anchorage length, and the specific value of LaE can be obtained by looking up the table according to requirements.

The composite column of the invention adopts a fully assembled form. Except that the concrete needs to be poured on site, both the column and the joints are prefabricated components, and the on-site construction amount is small, which can greatly shorten the construction period.

As shown in FIG. 1 , each standard assembly section 1 in this embodiment is assembled from three parts, including a single-layer section frame 11 , a column bottom node connector 12 and a beam-column node connector 13 . The standard assembly section 11 is connected to the standard assembly section 1 of the lower floor through the column bottom node connector 12, and is connected to the standard assembly section 1 of the upper floor and the beam structure 3 of the current floor through the beam-column node connector 13.

Fig. 3 is a schematic front view of the structure of a standard assembly joint connected with a beam member, which omits the reinforcement cage inside the single-layer section frame 11, the stiffeners in the column bottom node connector 12 and the beam-column node connector 13 Inner longitudinal stiffeners.

As shown in Figures 3 and 4, the single-layer segmented frame 11 in this embodiment includes a main body steel frame 111. In order to save steel consumption, the main body steel frame 111 adopts a steel frame structure, and the main body steel frame 111 is composed of four angles The piece 111a forms a square column skeleton. The angle piece 111a in this embodiment adopts supporting angle steel, and the main steel frame 111 also includes a steel hoop plate 111b, and the steel hoop plate 111b is transversely connected between adjacent supporting angle steels. In order to save the amount of steel used, the column has strong bearing capacity, good stability, high bending and shearing resistance, and has an anti-seismic effect. The single-layer segmented frame 11 also includes a reinforcement cage 112 welded in the main steel frame 111 , so that after the concrete in the column is poured, the reinforced concrete column wrapped in the steel frame is formed to bear the force.

As shown in Figure 5, the steel cage 112 is a column reinforcement member, including several longitudinal column longitudinal bars 112a arranged circumferentially along the inner wall of the main body steel frame 111, and the plurality of column longitudinal bars 112a form a shape and The inner profile of the frame 111 has a consistent column shape, and the two ends of the column longitudinal ribs 112a pass through the main steel frame 111 so as to connect with the beam-column node connector 13 and the column bottom node connector 12 . The reinforcement cage 112 also includes several horizontally arranged column stirrups 112b arranged axially along the column longitudinal bars 112a and hooping the column longitudinal bars 112a together. The column longitudinal reinforcement 112a is spot-welded with the steel hoop 112b and the supporting angle steel, and no column hoop 112b is set within the range of the steel hoop 111b. Viewed along the axial direction of the single-layer segmented frame 11, the column stirrups 112b in this embodiment are grid-like (column stirrups with tension bars), and the structure of the column stirrups 112b has a better shear resistance effect. it is good. The column stirrup 112b is not provided within the range of the steel stirrup plate 111b because the steel stirrup plate 111b can already resist shear force, so there is no need to additionally set the column stirrup 112b within its range.

Beam-column node connectors 13 and column bottom node connectors 12 are both in the shape of a square tube, and are respectively fixed on the top and bottom of the single-layer segmented frame 11 to strengthen the structure of the column bottom and top so as to form a stable steel frame system .

Both the column bottom node connector 12 and the beam-column node connector 13 are composed of a square steel cylinder whose size matches the cross-sectional shape of the main steel frame 111 and stiffeners arranged in the square steel cylinder. The bottom of the main steel frame 111 is butt-welded and fixed to the square steel cylinder of the column bottom node connector 12, and the top of the main steel frame 111 is butt-welded and fixed to the square steel cylinder of the beam-column node connector 13, passing through the columns at both ends of the main steel frame 111 The longitudinal ribs 112a extend into the column bottom node connector 12 and the beam-column node connector 13 respectively, and are welded with the double-sided inner walls 5d of their square steel cylinders.

In order to further simplify the steps during on-site construction, the single-layer segmented frame 11 of the present invention also includes a finished plate one 113, and the finished plate one 113 is fixed on the four sides of the main steel frame 111 to close the side walls of the main steel frame 111, The outsourcing module that forms the main steel frame 111 makes the single-layer section frame 11 or the standard assembly section 1 itself a pouring form, so that the cumbersome process of setting up the formwork can be omitted during on-site construction, and because the closed structure can be well The moisture in the cast-in-place concrete in the column can be retained, which can further save the process of concrete watering and curing.

After pouring concrete in the single-layer segmental frame 11, the concrete passes through the main steel frame 111 and directly contacts the finished plate 113, so that the steel frame of the single-layer segmental frame 11 and the inner-encased reinforced concrete column (consisting of steel cage and concrete) , The finished plate-113 is integrally cast and formed, the steel has high strength, which helps to strengthen the rigidity of the column, further improves its shear resistance, and thus helps to improve the overall rigidity of the prefabricated high-rise building structure system.

Finished boards are also fixed on each side of the square steel cylinder of the column bottom joint connector 12 and the beam-column joint connector 13, and the gaps between the adjacent finished boards on the standard assembled joint 1 are sealed to form a standard assembled joint. 1 A standard assembly section outsourcing formwork that is wrapped inside, has a smooth surface and has a fireproof function. This structure makes the composite column of the present invention not only need no additional formwork support and formwork removal during the construction process, but also because the surface of the outsourcing formwork on the standard assembly joint is smooth and has a fireproof function, the composite column constructed by the standard assembly joint 1 of the present invention does not need Further plastering and additional fireproof coating can further save construction cost and shorten the construction period.

The finished panels can be prefabricated concrete laminated panels or reinforced wood wool panels, etc., as long as they meet the above requirements. In the present invention, corner pre-embedded steel parts and middle part pre-embedded steel parts are arranged on the inner surface of the finished plate, so that the finished plate can be conveniently welded on the side wall of the standard assembly joint 1. As shown in Figure 5, the finished plate 113 is welded to the supporting angle steel on the corresponding side of the main steel frame 111 through the embedded steel part 113a at the corner, and the finished plate 113 is also welded to the corresponding side of the main steel frame 111 through the embedded steel part 113b in the middle. The upper steel hoop plate 111b is welded.

In this embodiment, the structure of the column bottom node connector 12 is shown in Figures 6 and 7. The column bottom node connector 12 includes: a bottom steel cylinder 121 composed of a square steel cylinder, welded in the bottom steel cylinder 121, penetrating through the bottom The longitudinal stiffener 122 of the steel cylinder 121, and the finished plate 123. The stiffeners 122 are in the shape of a square, and are referred to as square stiffeners 122 hereinafter. The finished plate 2 123 is fixed on the four sides of the bottom steel cylinder 121 to form an outsourcing module of the column bottom node connector 12 . The well-shaped stiffener 122 is composed of four steel plates perpendicularly intersecting in pairs on the inner wall of the bottom steel cylinder 121 by the central axis coincident with the central axis of the bottom steel cylinder 121 .

2 in Figures 6 and 7 is the structural rib 2 stretched into the standard assembly section 1 of the lower floor by the standard assembly section 1 of the lower floor.

In this embodiment, the structure of the beam-column node connector 13 is shown in Figures 3, 8, 9, 10, and 11. The structure of the beam-column node connector 13 in this embodiment is suitable for U-shaped beams (see Figure 12). Matching, the end of the U-shaped beam can be directly fixed on the side wall of the top steel cylinder 131 (described below) of the beam-to-column node connector 13 of this embodiment.

As shown in the figure, the beam-to-column joint connector 13 includes a top steel cylinder 131 made of a square steel cylinder, and also includes a flange plate 132 as a transverse stiffener, an upper plate 133, a lower plate 134, and a steel cylinder welded on the top steel cylinder. In 131, the longitudinal stiffeners running through the entire top steel cylinder 131 are well-shaped stiffeners 135, and the finished plate three 136. The structure of the well-shaped stiffener 135 and the installation position in the square steel cylinder are the same as the well-shaped stiffener 122, so that their projections on the horizontal plane coincide.

The flange plate 132, the upper plate 133, and the lower plate 134 are square flat plates whose size matches the internal size of the top steel cylinder 131. There is an opening in the middle as a concrete pouring port, and the three square flat plates are welded to the top steel cylinder 131 through the edges. four inner walls.

The flange plate 132 , the upper plate 133 , and the lower plate 134 are layered and arranged in the top steel cylinder 131 from top to bottom, and the well-shaped stiffener 135 is divided into several sections when viewed perpendicular to the axial direction.

Wherein, the setting position of the flange plate 132 corresponds to the welding position on the outer wall of the beam-column node connector 13 top steel cylinder 131 of the additional flange n-shaped steel part top plate of the support on the U-shaped beam 3 (in the beam-column node connector 13 The upper welding support is attached to the flange n-shaped steel parts to bear the shear force of the connected floor 4), and the setting positions of the upper plate 133 and the lower plate 134 are respectively connected with the welding positions of the wing plate and the bottom plate of the U-shaped beam 3 on the outer wall of the top steel cylinder 131 Corresponding, so that the flange plate 132, the upper plate 133, the lower plate 134 are respectively across the top steel cylinder 131, and the top plate, The wing plate of the U-shaped beam 3 is opposite to the bottom plate.

The span between the parallel two steel plates in the well-shaped stiffener 135 corresponds to the span between the two webs of the additional flange n-shaped steel part of the support and the span between the U-shaped beam 3 two webs, so that the U-shaped beam 3 is welded on When it is on the outer wall of the top steel cylinder 131, the two webs of the n-shaped steel parts of the additional flange of the support and the two webs of the U-shaped beam 3 are separated from the top steel cylinder 131, and are welded to the top steel cylinder 131 with the well-shaped stiffeners. The two steel plates on the inner wall are opposite.

As shown in Figures 10 and 11, longitudinal stiffeners and auxiliary stiffeners 137 are also provided in the top steel cylinder 131. The auxiliary stiffeners 137 are composed of four vertically arranged square ribs, and the four square ribs are vertically welded on the top. The center line of the inner walls of the four sides of the steel cylinder 131 is connected to the inner wall of the top steel cylinder 131 and the middle part of the steel plate in the well-shaped stiffener 135 which is parallel to the inner walls of the sides. The auxiliary stiffeners 137 can be arranged through the inner wall of the top steel cylinder 131, or only arranged between the upper plate 133 and the lower plate 134, and run through the distance between them. The setting of the auxiliary stiffener 137 is mainly used to further strengthen the shear force of the core area of the node.

The finished plate 3 136 is fixed on the four sides of the top steel cylinder 131 to form the outsourcing module of the beam-column node connector 13. Welding windows can be reserved at the corresponding positions of the finished plate 3 131 to facilitate the connection between the U-shaped beam and the top steel cylinder 131. Connection.

As shown in Figures 8 and 9, the opening on the lower plate 134 is set towards the inner wall of the top steel cylinder 131, and the corner points fall on the octagonal shape of each steel plate connected to the inner wall of the top steel cylinder 131 of the well-shaped stiffeners 135. Opening, the distance between each corner point and the inner wall of the top steel cylinder 131 adjacent to it is approximately equal.

An octagonal opening area corresponding to the lower plate 134 is formed on the upper plate 133. The difference between the upper plate 133 and the lower plate 134 is that there are four openings on the upper plate 133, which are respectively connected to the top steel cylinders 131. A cross-shaped plate 133 a on the inner wall is formed by evenly dividing the octagonal opening area, and the cross-shaped plate 133 a is a part of the square plate structure of the upper plate 133 .

The structure of the flange plate 132 is the same as that of the upper plate 133 .

Well-shaped stiffeners 135 and auxiliary stiffeners 137 enclose several axial independent passages in the top steel cylinder 131, and the upper end of each passage passes through the flange plate 132, the upper plate 133 or the lower plate 134. The opening in the standard assembly section 1 communicates with the concrete pouring channel, so that concrete can be poured into any position in the standard assembly section 1.

In this embodiment, there are four structural ribs 2 connecting adjacent standard assembly joints 1, and the four structural ribs 2 are respectively arranged at four corners of the standard assembly joint 1. 2 among Figures 9 and 11 is the structural rib stretched into the standard assembly section 1 of the lower floor by the standard assembly section 1 of the lower floor. At corresponding positions on the edge of the lower plate 134, there are perforations for the upper ends of the column longitudinal ribs 112a in the single-layer segmented frame 11 to pass through.

Construction process of the present invention is as follows:

(1) Complete prefabricated assembly components in the factory: prefabrication of single-layer segmented frame, beam-column node connectors, and column bottom node connectors;

(2) Transport the prefabricated assembly components to the site for welding and assembly;

(3) Pouring the concrete in the column;

(4) After the concrete pouring in the column is completed, the beam-column node connector is welded to the U-shaped beam, and then the concrete of the U-shaped beam body is poured to form a steel-concrete beam-column connection node.

The beam-column node connector of the present invention can also be used to install rectangular beams, and the installation method of the rectangular beams is the same as that of U-shaped beams (the top plate of the rectangular beam is equivalent to the wing plate of the U-shaped beam).

In the present invention, steel corbels can also be welded on the outer wall of the beam-column node connector, and connected to the beam structure through the steel corbels. At this time, the stiffener structure in the beam-column joint connector should be flexibly adjusted according to the structure of the steel corbel.

The present invention adopts prefabricated component single-layer section frame 11, column bottom node connector 12 and beam-column node connector 13 to assemble into standard assembly section 1, and then forms composite column by splicing up and down through standard assembly section 1, so that conventional reinforced concrete column construction On-site tying of steel bars, formwork pouring of concrete, formwork removal and other complex construction techniques are transformed into factory production of components and on-site assembly construction techniques that meet the requirements of industrialization, and solve the technical problem of long construction time in the prior art. The standard assembly joint 1 of the present invention can also be pre-manufactured in the factory and then transported to the construction site. At the construction site, only the standard assembly joints need to be connected by welding to realize the positioning and docking of the prefabricated components, and finally pour into the standard assembly joint. The concrete can complete the construction of the prefabricated concrete composite column. The standard assembly joint of the invention can be produced in a factory completely, and the production efficiency is high. Only simple welding and concrete pouring work are performed on site, which greatly improves the construction speed. Moreover, the vertical installation accuracy of the prefabricated concrete composite column of the structure of the present invention is low, and the splicing seam of the standard assembly joint is between the bottom of the upper column body and the top of the lower column body, even if the deviation is 2 mm, it will not affect the appearance and use of the building. The installation error between the upper and lower floors can adopt the deviation requirements of the concrete structure. The assembly is very convenient and fast, and the vertical installation accuracy is low, so that the construction speed of the column can be greatly improved.

The prefabricated concrete composite column of the present invention has the characteristics of factory production of components, simple assembly and construction concrete construction on site, meets the requirements of the "four modernizations" of construction industrialization, and is formed in the aspects of industrial chain organization, technical qualifications, and economic accounting. New technologies that match the requirements of construction industrialization have been developed.

The standard assembling section of the present invention can also be cylinders of other shapes, such as round cylinders, special-shaped cylinders, etc., see Embodiment 2 and Embodiment 3 for details.

In the following, only the differences between the second and third embodiments and the first embodiment will be further described in conjunction with the relevant drawings of the second and third embodiments.

Embodiment two

The standard assembly section in the second embodiment is a circular column.

As shown in Figure 13, the single-layer segmented frame in the second embodiment is the same as the first embodiment, and is also composed of a main steel frame 111, a finished plate 113 surrounding the main steel frame, and steel bars welded in the main steel frame 111 A cage 112 is formed. The column longitudinal bars 112a in the reinforcement cage 112 are arranged circumferentially along the inner wall of the main steel frame 111 to form a cylindrical shape corresponding to the inner profile of the main steel frame 111 .

In this embodiment, the main steel frame 111 includes steel hoops 111b, and four vertically arranged and cylindrical support plates 111c. The steel hoops 111b are connected to adjacent support plates 111c for shaping to form a steel frame. The support plate 111c is an arc-shaped plate, and the four support plates 111c are evenly distributed on the circumference of the cylindrical structure, and the steel hoop plate 111b is also an arc-shaped plate, so that the projection of the steel frame formed by them on the horizontal plane is round.

As shown in Figures 14 and 15, the beam-to-column joint connector in the second embodiment is the same as that in the first embodiment, and is also composed of the top steel cylinder 131, the finished plate three 136 surrounding the top steel cylinder 131, and the top steel cylinder 136 welded on the top steel cylinder. The stiffeners in the barrel 131 are formed.

The top steel cylinder 131 in this embodiment is a circular steel cylinder. The stiffeners in the top steel cylinder 131 include longitudinal stiffeners, that is, cross-shaped stiffeners 2 135 , and transverse stiffeners upper plate 133 and lower plate 134 . The second cross-shaped stiffener 135 is made of two square steel plates perpendicular to each other. The central axis of the second cross-shaped stiffener coincides with the central axis of the bottom steel cylinder 131 and is welded between the inner walls of the top steel cylinder 131 . The upper and lower plates of the upper plate 133 and the lower plate 134 are welded in the top steel cylinder 131 in layers. They are two circular steel plates whose outer diameter matches the inner diameter of the top steel cylinder 131. They are installed on the upper and lower sides of the beam structure respectively corresponding to the flange.

As shown in FIG. 16 , the structure of the column bottom node connector in this embodiment is the same as that of the beam-column node connector except that no transverse stiffener is provided.

In Figures 14 and 15, 112a is a single-layer section frame extending from the single-layer section frame of the same standard assembly joint into the beam-column node connector; 2 is the structural rib connecting adjacent standard assembly joints.

The transverse stiffeners in the steel cylinder in Embodiments 1 and 2 are for increasing the shear bearing capacity and torsion resistance, and the longitudinal stiffeners are mainly for bending resistance.

Embodiment Three

The standard assembly section in the third embodiment is a special-shaped column.

As shown in Figure 17, the single-layer segmented frame in the third embodiment is the same as the first embodiment, and also consists of a main steel frame 111, a finished plate 113 surrounding the main steel frame, and steel bars welded in the main steel frame 111 A cage 112 is formed. The column longitudinal bars 112a in the reinforcement cage 112 are arranged circumferentially along the inner wall of the main steel frame 111 to form a columnar structure with a trapezoidal cross-section whose shape corresponds to the inner shape of the main steel frame 111 .

In this embodiment, the main body steel frame 111 includes a support plate 111c and a corner member 111a. Both the support plate 111c and the corner member 111a are arranged vertically. Between the two corner members 111a on the long side, a trapezoidal column structure is formed. The main steel frame 111 also includes a steel hoop plate 111b, which connects the adjacent support plate 111c or the corner member 111a and the support plate 111c for shaping . The corner member 111a in this embodiment is a corner member with an angle corresponding to the angle between the intersecting surfaces of the trapezoidal columns, and the support plate 111c is a square flat plate. Same as the support plate in the second embodiment, it is used as a steel frame component of the vertical column facade.

As shown in Figures 18 and 19, the beam-to-column joint connector in the third embodiment is the same as that in the first embodiment, and is also composed of the top steel cylinder 131, the finished plate three 136 surrounding the top steel cylinder 131, and the top steel cylinder 136 welded on the top steel cylinder. The stiffeners in the barrel 131 are formed.

The top steel cylinder in this embodiment is a trapezoidal steel cylinder. The stiffeners in the top steel cylinder include a square-shaped stiffener 135 and transverse stiffeners 138 and 139 . The two stiffeners 135 of the square shape are made of four square steel plates that are respectively welded on the midlines of the two inner walls of the top steel cylinder 131 on both sides. The upper and lower layers of the transverse stiffener 138 and transverse stiffener 139 are welded in the top steel cylinder 131, all of which are transversely welded to the outside of each square steel plate of the square-shaped stiffener 135, and the two ends are respectively welded to the trapezoidal column phase. On the adjacent two inner walls, there are four steel plates in a circle, and each set position corresponds to the upper and lower flanges of the beam structure, which is equivalent to the upper and lower plates 133, 134 in Embodiments 1 and 2.

As shown in FIG. 20 , the structure of the column bottom node connector in this embodiment is the same as that of the beam-column node connector except that no transverse stiffener is provided.

In this embodiment, the square-shaped stiffeners 135 form longitudinal stiffeners in the top steel cylinder.

Claims (9)

1. a kind of assembled section of the standard of assembly concrete combined column, including the individual layer merogenesis frame in individual layer merogenesis post, individual layer point Section frame includes main body steelframe and the steel reinforcement cage being arranged in the main body steelframe, it is characterised in that also includes being used as prefabricated components Steel node, the steel node is fixed on the top and/or bottom of the individual layer merogenesis frame, and one is formed with the individual layer merogenesis frame The steel skeleton of column, there is a upper and lower concrete cast passage communicated inside the steel skeleton, will during for constructing at the scene Concrete cast is carried out after the upper and lower splicing of multiple assembled sections of the standard is fixed, to be built into assembly concrete combined column；

The steel node includes being respectively used to strengthen the individual layer merogenesis frame bottom, the post bottom node connector and beam of apex structure Column border node connector, post bottom node connector and bean column node connector are separately fixed at the bottom of the individual layer merogenesis frame End, top, post bottom node connector and bean column node connector are by size and the main body steelframe shape of cross section phase The steel cylinder of adaptation and the ribbed stiffener composition being arranged in the steel cylinder, the main body steelframe is respectively in bottom and top and the post The steel cylinder butt welding of the steel cylinder of bottom node connector and the bean column node connector is fixed, and passes the main body steelframe both ends Post indulge muscle and be respectively protruding into post bottom node connector and the bean column node connector, and be welded on their steel cylinders On inwall, the assembled section of the standard is connected by post bottom node connector with the assembled section of the standard of lower floor, passes through the beam Column border node connector is connected with the post bottom node connector of the assembled section of the standard of last layer, or is connected with the girder construction of this layer.

2. the assembled section of standard according to claim 1, it is characterised in that the main body steelframe is by stirrup plate and some vertical Set, surround for being spaced the support plate and/or corner member composition, the angle of the corner member and the column of column structure The angle that structure intersects between two sides is corresponding, and the support plate is the vertical posts facade steel-frame member of the column structure, described Stirrup plate connects the adjacent support plate and/or corner member to shape, and forms a steel frame.

3. the assembled section of standard according to claim 2, it is characterised in that the steel reinforcement cage in the individual layer merogenesis frame is fixed on On the main body steelframe inwall, by the post of some longitudinal directions indulge muscle and along the post indulge muscle it is axially arranged, for by some institutes To state post and indulge muscle hoop and hold together several horizontal column tie-bars together and form, the post indulges muscle along main body steelframe inwall circumferential array, These posts are indulged into muscle enclose by column tie-bar to indulge into a cylindricality consistent with profile shape in the main body steelframe, the post of the steel reinforcement cage The main body steelframe is stretched out at muscle both ends.

4. the assembled section of standard according to claim 3, it is characterised in that the individual layer merogenesis post also includes production board, institute State production board to be fixed on the side of the main body steelframe, close the side wall of the main body steelframe, form the main body steelframe Outsourced module, the individual layer merogenesis frame itself is set to pour mould as one.

5. the assembled section of standard according to claim 4, it is characterised in that post bottom node connector and bean column node connect Also production board is all fixed with the side of the steel cylinder of fitting, slurry envelope is smeared in the assembled gap saved between upper adjacent production board of the standard Close, formed by the assembled section of the standard be wrapped in, surfacing is smooth and the assembled section outsourcing mould of standard with fire-proof function Plate.

6. the assembled section of standard according to claim 5, it is characterised in that the structure of post bottom node connector is：Claim The steel cylinder of post bottom node connector is bottom steel cylinder, runs through the ribbed stiffener provided with longitudinal direction in the bottom steel cylinder；

The steel cylinder of the bean column node connector is referred to as top steel cylinder, and the ribbed stiffener provided with longitudinal direction, institute are also extended through in the top steel cylinder State in the steel cylinder of top and be additionally provided with horizontal ribbed stiffener；

Longitudinal ribbed stiffener in the bottom steel cylinder, top steel cylinder is all made up of some pieces of vertically arranged square plates, the side Shape steel plate is welded on the bottom steel cylinder or top steel cylinder not on the inwall of homonymy by both sides, vertical in the bottom steel cylinder, top steel cylinder To ribbed stiffener projection in the horizontal plane overlap；

The horizontal ribbed stiffener, one piece of middle part being welded on by border on the top steel cylinder inwall are provided with the steel plate structure of perforate Into, or some blocks of steel plates by being circumferentially welded on the top steel cylinder inwall, forming a circle form, if that circumferentially welds is described Inner ring hole is formed in the middle part of dry block steel plate, the perforate, inner ring hole form the sprue gate that concrete continues to pour into a mould downwards；

The horizontal ribbed stiffener comprises at least two pieces, and set location is corresponding with the upper and lower edge of a wing of the girder construction respectively；

Longitudinal ribbed stiffener in the top steel cylinder encloses out several axial autonomous channels, Mei Gesuo in the top steel cylinder State passage upper end to connect with concrete cast passage by the sprue gate on the horizontal ribbed stiffener, so as to concrete Any position of the assembled section of the standard can be poured into.

7. the assembled section of standard according to claim 6, it is characterised in that the top steel cylinder of the bean column node connector is one Square steel cylinder, longitudinal ribbed stiffener in it are intersecting parallels ribbed stiffener；

Horizontal ribbed stiffener is the square bar of size is adapted to top steel cylinder inside dimension border welding in the top steel cylinder Plate, there are three pieces, they are from top to bottom stratified and set in the top steel cylinder, are referred to as flange plate, upper plate and lower plate, described Span in intersecting parallels ribbed stiffener between two parallel square plates is corresponding with the span between the U-shaped web of beam two；

When U-shaped beam is welded on the top steel cylinder outer wall：

The top plate that the flange plate and U-shaped beam upper bracket add edge of a wing n-type steel part is relative across the top steel cylinder, the intersecting parallels Two parallel square plates add edge of a wing n across the top steel cylinder with two webs of the U-shaped beam and the bearing in ribbed stiffener Two webs of shaped steel part are relative, and the wing plate of the upper plate and the U-shaped beam is relative across the top steel cylinder, the lower plate with it is described U-shaped beam bottom plate is relative across the top steel cylinder.

8. the assembled section of standard according to claim 7, it is characterised in that longitudinal ribbed stiffener also includes in the top steel cylinder Ribbed stiffener is aided in, the auxiliary ribbed stiffener is made up of four pieces of vertically arranged square floors, and the square floor is vertically welded in It is described top steel cylinder four sides inwall center line and the intersecting parallels ribbed stiffener in respective inner walls parallel and near to square plate between, if The shearing resistance of joint cores can further be lifted by putting auxiliary ribbed stiffener；

The upper end of the passage marked off in the top steel cylinder by the auxiliary ribbed stiffener is also by the horizontal ribbed stiffener Sprue gate connects with concrete cast passage；

The square floor is at least through the distance between the upper plate, lower plate.

9. the assembly concrete that a kind of standard assembly section by described in any one of claim 1~8 claim is formed is compound Post, it is characterised in that the combined column is fixed by the upper and lower splicing of the assembled section of multiple standards and poured into a mould concrete and formed, and has Body is that the upper end steel node that the adjacent assembled section of two standards mutually splices is fixed with lower end steel node weld, and by being anchored at State some in concrete construction muscle to be connected, the assembled section of two adjacent modulars of splicing is respectively stretched at the both ends of the construction muscle Individual layer merogenesis frame in, the length stretched into the individual layer merogenesis frame is at least LaE, and LaE is antidetonation anchorage length.