CN108560826A - A kind of assembled partial precast steel sections outsourcing coupled column and its construction method - Google Patents

Abstract

The invention discloses a kind of novel fabricated partial precast steel sections outsourcing coupled column, including cast-in-place and prefabricated two parts, pre-erection includes shaped steel, precast concrete, pull rod and vertical muscle；Cast-in-place part is made of cast-in-place concrete or modified concrete.The invention also discloses the construction methods of above-mentioned novel fabricated partial precast steel sections outsourcing coupled column.Excellent earthquake resistance of the present invention, the advantages of composite structure can be played but also the cheap property for taking into account its construction, it is again opposite simultaneously to ensure construction quality, solve the problems, such as that profile steel concrete column is not easy to promote, it can be widely used in all kinds of building structure, extremely push combined member in the development of engineer application.

Description

A prefabricated partly prefabricated steel partly outsourced composite column and its construction method

technical field

The invention relates to the field of construction engineering, in particular to an assembled partially prefabricated section steel partially outsourcing composite column and a construction method thereof.

Background technique

As a new type of composite member, the partly-wrapped steel column can give full play to the stiffness in the strong axis direction of the shaped steel member, and at the same time make up for the stiffness in the weak axis direction. Compared with traditional RC columns, it has the advantages of high strength, small cross-sectional area, and light weight of components; compared with SRC columns, it has the advantages of low cost and cheap construction.

The existing composite column construction is still dominated by wet work, which has the disadvantages of complicated construction procedures and long construction period, which seriously restricts the engineering application of composite columns. The industrialization and industrialization development of construction engineering has given birth to the production of prefabricated concrete structures. It adopts the construction method of factory prefabrication and on-site connection, which has the advantages of fast construction speed and saving formwork.

Due to its high bearing capacity, steel concrete columns are mostly used in super high-rise or long-span structures, but due to their high cost and complicated construction factors, their application is limited to multi-story and high-rise buildings. Therefore, in view of the above status quo, it is urgent to develop a new type of prefabricated partially prefabricated steel partially outsourcing composite column and its construction method to overcome the shortcomings in current practical applications.

Contents of the invention

The object of the present invention is to provide a prefabricated partially prefabricated steel partially outsourcing composite column and its construction method to solve the problems raised in the above-mentioned background technology.

To achieve the above object, the present invention provides the following technical solutions:

A prefabricated partially prefabricated section steel partially outsourcing composite column, including section steel; prefabricated concrete arranged between the section steel flanges and located on both sides of the section steel web; pulling the section steel flanges and built into the precast concrete tie rods; several longitudinal bars built into the precast concrete along the length direction of the section steel and close to the tie bars; cast-in-situ concrete filled in the closed space formed by the section steel and the precast concrete.

As a further solution of the present invention: the prefabricated concrete is arranged between the shaped steel flanges and on both sides of the shaped steel web; the prefabricated concrete and the shaped steel flanges form the four sides of the cross-section of the composite column; Looking at the cross section, the prefabricated concrete and the shaped steel flange form a hollow closed space.

As a further solution of the present invention: the tie rods are embedded in the prefabricated concrete; the tie rods are equally spaced along the length direction of the shaped steel; the tie rods are connected to the flange of the shaped steel.

As a further solution of the present invention: the longitudinal reinforcement is embedded in the precast concrete; the longitudinal reinforcement is close to the tie rod; the longitudinal reinforcement is arranged in the same direction as the section steel.

As a further solution of the present invention: the cast-in-place concrete is poured in the closed space formed by the section steel and the prefabricated concrete; the cast-in-place concrete is divided into two by the web of the section steel.

As a further solution of the present invention: the prefabricated concrete is ordinary concrete or modified concrete.

As a further solution of the present invention: the cast-in-place concrete is ordinary concrete or modified concrete.

A construction method for an assembled partially prefabricated section steel partially outsourcing composite column, comprising the following steps:

1) Put the section steel or welded section steel in place in the component manufacturing plant, weld the tie rods to the section steel flange according to the designed spacing and position, arrange the longitudinal reinforcement along the length direction of the section steel and tie them close to the tie bars, set up the formwork and pour concrete to complete the prefabricated part ;

2) Transport the prefabricated parts to the construction site and hoist them in place;

3) Pour cast-in-place concrete in the hollow part of the prefabricated part.

Compared with prior art, the beneficial effect of the present invention is:

1) Excellent performance --- the new partly prefabricated steel partly outsourced composite column, compared with the steel column, its strength is higher, the biaxial stiffness is similar, and the application range is wider; compared with the cast-in-place concrete column, it has higher bearing capacity, It has the advantages of reducing the self-weight of components and reducing the cross section; compared with steel concrete columns, it has the advantages of more convenient construction and lower cost, and has broad application prospects.

2) Fast and cheap construction---Most of the new prefabricated steel and outsourcing composite columns are mostly manufactured in the factory. The process is simple, which greatly improves the production efficiency of components, and is not affected by weather factors, further improving construction efficiency. The construction site is hoisted, and the prefabricated components can be used as the formwork for the next step of pouring concrete, which further saves the time for setting up the formwork, improves construction efficiency, and at the same time reduces the cost. The entire construction process is relatively simple and convenient.

3) The construction quality is easy to control---compared with the situation that the traditional on-site production of components is prone to insufficient concrete curing and insufficient vibration, large-scale factory production can better ensure the overall utilization and quality control of materials, so as to ensure the quality of the components. At the same time, compared with on-site construction, the factory production environment and labor protection measures have been greatly improved, which can effectively ensure the health and personal safety of construction workers.

Generally speaking, the new prefabricated partially prefabricated steel partially outsourced composite column can not only give full play to the advantages of the composite structure, but also take into account the cheapness of its construction, and at the same time relatively guarantee the construction quality. It is widely used in various building structures, which greatly promotes the development of composite components in engineering applications.

Description of drawings

Fig. 1 is a cross-sectional schematic diagram of a prefabricated partly prefabricated steel partly outsourcing composite column of the present invention.

Fig. 2 is a perspective view of the prefabricated part of the prefabricated part of the prefabricated section steel part of the outsourcing composite column of the present invention.

Fig. 3 is a top view of the prefabricated part of the prefabricated part of the prefabricated section steel part of the outer composite column of the present invention.

Fig. 4 is a perspective view of the prefabricated partly prefabricated steel partly outsourcing combined column of the present invention.

Fig. 5 is a top view of the prefabricated partly prefabricated steel partly outsourcing composite column of the present invention.

In the figure: 1-section steel, 2-prefabricated concrete, 3-tie rod, 4-longitudinal reinforcement, 5-cast-in-situ concrete.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figures 1 to 5. In an embodiment of the present invention, an assembled partly prefabricated section steel section outsourcing composite column includes section steel 1; Concrete 2; tie rods 3 that are connected to the flange of the profiled steel 1 and built into the precast concrete 2; several longitudinal reinforcements 4 built into the precast concrete 2 along the length direction of the profiled steel 1 and close to the tie rods 3; The cast-in-place concrete 5 filled in the closed space formed by the section steel 1 and the precast concrete 2 .

In this embodiment, the precast concrete 2 is arranged between the flanges of the profiled steel 1 and on both sides of the web of the profiled steel 1; the precast concrete 2 and the flanges of the profiled steel 1 form the cross section of the composite column Four sides; looking down at the cross section, the precast concrete 2 and the flange of the section steel 1 form a hollow closed space.

In this embodiment, the tie rods 3 are built into the precast concrete 2; the tie rods 3 are distributed at equal intervals along the length direction of the shaped steel 1; the tie rods 3 are connected to the flange of the shaped steel 1.

In this embodiment, the longitudinal reinforcement 4 is built into the precast concrete 2; the longitudinal reinforcement 4 is close to the tie rod 3; and the longitudinal reinforcement 4 is arranged in the same direction as the section steel 1.

In this embodiment, the cast-in-place concrete 5 is poured in the closed space formed by the shaped steel 1 and the precast concrete 2 ; the cast-in-place concrete 5 is divided into two by the web of the shaped steel 1 .

In this embodiment, the precast concrete 2 is ordinary concrete or modified concrete.

In this embodiment, the cast-in-place concrete 5 is ordinary concrete or modified concrete.

In an embodiment of the present invention, a construction method for an assembled partially prefabricated section steel partially outsourcing composite column includes the following steps:

1) Put the section steel 1 or the welded section steel 1 in place in the component manufacturing plant, weld the tie rod 3 to the flange of the section steel 1 according to the designed spacing and position, and arrange the longitudinal reinforcement 4 along the length direction of the section steel 1 and tie it close to the tie rod 3. Molding and pouring concrete to complete the prefabricated part, see Figure 2 for details of the completed prefabricated parts;

2) Transport the prefabricated parts to the construction site and hoist them in place;

3) Pour cast-in-place concrete 5 in the hollow part of the prefabricated part, and complete the construction of the prefabricated part of the prefabricated section steel part of the outsourcing composite column described in the present invention.

The prefabricated partially prefabricated steel partially outsourced composite column has the following advantages:

1) Excellent performance --- the new partly prefabricated steel partly outsourced composite column, compared with the steel column, its strength is higher, the biaxial stiffness is similar, and the application range is wider; compared with the cast-in-place concrete column, it has higher bearing capacity, It has the advantages of reducing the self-weight of components and reducing the cross section; compared with steel concrete columns, it has the advantages of more convenient construction and lower cost, and has broad application prospects.

2) Fast and cheap construction---Most of the new prefabricated steel and outsourcing composite columns are mostly manufactured in the factory. The process is simple, which greatly improves the production efficiency of components, and is not affected by weather factors, further improving construction efficiency. The construction site is hoisted, and the prefabricated components can be used as the formwork for the next step of pouring concrete, which further saves the time for setting up the formwork, improves construction efficiency, and at the same time reduces the cost. The entire construction process is relatively simple and convenient.

3) The construction quality is easy to control---compared with the situation that the traditional on-site production of components is prone to insufficient concrete curing and insufficient vibration, large-scale factory production can better ensure the overall utilization and quality control of materials, so as to ensure the quality of the components. At the same time, compared with on-site construction, the factory production environment and labor protection measures have been greatly improved, which can effectively ensure the health and personal safety of construction workers.

Generally speaking, the new prefabricated partially prefabricated steel partially outsourced composite column can not only give full play to the advantages of the composite structure, but also take into account the cheapness of its construction, and at the same time relatively guarantee the construction quality. It is widely used in various building structures, which greatly promotes the development of composite components in engineering applications.

The above are only preferred embodiments of the present invention, and it should be pointed out that for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present invention, and these should also be regarded as protection of the present invention. None of these will affect the implementation effect of the present invention and the practicability of the patent.

Claims (8)

1. a kind of assembled partial precast steel sections outsourcing coupled column, which is characterized in that including shaped steel（1）；It is set to described Shaped steel（1）It is located at the shaped steel between the edge of a wing simultaneously（1）The precast concrete of web both sides（2）；Socket the shaped steel（1）The edge of a wing is simultaneously It is built in the precast concrete（2）Pull rod（3）；It is built in the precast concrete（2）Along the shaped steel（1）Length direction And it is close to the pull rod（3）Several vertical muscle（4）；It is filled in the shaped steel（1）With the precast concrete（2）The closing of composition Cast-in-place concrete in space（5）.

2. assembled partial precast steel sections outsourcing coupled column according to claim 1, which is characterized in that described prefabricated Concrete（2）In the shaped steel（1）Between the edge of a wing and it is divided into the shaped steel（1）Web both sides；The precast concrete（2）With The shaped steel（1）The edge of a wing composition coupled column four side of cross section；It bows and sees cross section, the precast concrete（2）With the type Steel（1）The edge of a wing forms hollow enclosure space.

3. assembled partial precast steel sections outsourcing coupled column according to claim 1 or 2, which is characterized in that described Pull rod（3）It is built in the precast concrete（2）；The pull rod（3）Along the shaped steel（1）Length direction equidistantly distributed；Institute State pull rod（3）Connect the shaped steel（1）The edge of a wing.

4. assembled partial precast steel sections outsourcing coupled column according to claim 3, which is characterized in that the vertical muscle （4）It is built in the precast concrete（2）；The vertical muscle（4）It is close to the pull rod（3）；The vertical muscle（4）With the shaped steel （1）Equidirectional arrangement.

5. assembled partial precast steel sections outsourcing coupled column according to claim 4, which is characterized in that described cast-in-place Concrete（5）It pours in the shaped steel（1）With the precast concrete（2）The enclosure space of composition；The cast-in-place concrete（5） By the shaped steel（1）Web is divided into two.

6. assembled partial precast steel sections outsourcing coupled column according to claim 5, which is characterized in that described prefabricated Concrete（2）For normal concrete or modified concrete.

7. assembled partial precast steel sections outsourcing coupled column according to claim 5, which is characterized in that described cast-in-place Concrete（5）For normal concrete or modified concrete.

8. a kind of construction method of assembled partial precast steel sections outsourcing coupled column, which is characterized in that include the following steps：

1）Factory is made by shaped steel in component（1）Or the shaped steel being welded（1）In place, pull rod（3）According to design spacing and position It sets and is welded in shaped steel（1）Muscle is indulged on the edge of a wing（4）Along shaped steel（1）Length direction is laid and is close to pull rod（3）Binding, formwork simultaneously pour Concrete completes pre-erection；

2）Prefabricated component is transported to construction site, lifting is in place；

3）Pour cast-in-place concrete（5）In prefabricated component hollow space.