CN113356479B - Concrete column frame and its construction method - Google Patents

Abstract

The application provides a concrete column framework and a construction method thereof. The longitudinal ribs are made by covering an FRP layer outside a steel bar inner core, and the plurality of longitudinal ribs are arranged in a polygonal prism shape. The end face support is arranged at two ends of the longitudinal ribs, the end face support is composed of a plurality of supporting rods which are connected with each other and intersected with the central shaft of the polygonal prism, and two ends of each supporting rod are fixedly connected with the longitudinal ribs at two opposite positions respectively. The stainless steel stranded wires are spirally arranged along the peripheries of the longitudinal ribs. The connecting assembly is arranged at the joint of the stainless steel strand and the longitudinal rib and is used for fixedly connecting the stainless steel strand and the longitudinal rib. The concrete column skeleton in this application has advantages such as corrosion-resistant, intensity height, construction flexibility.

Description

Concrete column frame and its construction method

technical field

The present application relates to the technical field of building structural components, in particular to a concrete column skeleton.

Background technique

The performance degradation or even destruction of concrete structures caused by the corrosion of steel skeletons inside concrete columns has become a serious threat to structural safety and social and economic development. Corrosion of steel bars in concrete has the characteristics of universality, concealment, gradualness and suddenness, which not only consumes resources and pollutes the environment, but also easily induces engineering accidents and endangers human health and safety.

In solving the problem of corrosion and improving durability of concrete structures, it is most effective to solve the problem of corrosion from the perspective of the material itself. Fiber Reinforced Polymer (English for Fiber Reinforced Polymer, abbreviated as FRP) has the advantages of light weight, high strength, corrosion resistance, etc. It has been widely used in the field of building construction and structural reinforcement, and has become a solution to the structural durability problem caused by the corrosion of steel bars. important material. However, when the FRP bar is used as a stirrup, it must be bent before the resin is cured, which greatly reduces its construction flexibility, and the strength of its bending section is only about 40% of the tensile strength of the material, which is difficult to guarantee. The overall strength of the skeleton. Therefore, there is an urgent need for a concrete column skeleton, which has the advantages of corrosion resistance and high strength compared with the skeleton of ordinary steel bars, and has the advantages of construction flexibility compared with the skeleton of FRP steel bars.

SUMMARY OF THE INVENTION

The present application provides a concrete column skeleton to solve the problems of corrosion, durability, construction flexibility and the like of the steel skeleton of the concrete column in the prior art.

In order to solve the above problems, the technical solution provided by the present application is: a concrete column skeleton, including longitudinal ribs, end brackets, stainless steel strands and connecting components. The longitudinal rib is made by covering the inner core of the steel bar with the FRP layer, and a plurality of the longitudinal rib are arranged in the shape of a polygonal prism. The end brackets are arranged at both ends of the plurality of longitudinal ribs, and the end brackets are composed of a plurality of support rods that are connected to each other and intersect the central axis of the polygonal prism. The ends are respectively fixedly connected with the longitudinal ribs at two opposite positions. The stainless steel strands are helically arranged along the perimeter of the plurality of longitudinal ribs. The connecting component is arranged at the connection between the stainless steel stranded wire and the longitudinal rib, and is used for fixedly connecting the stainless steel stranded wire and the longitudinal rib.

In the concrete column skeleton of this application, the longitudinal bars are made of steel cores covered with FRP layers. Since the FRP material has good corrosion resistance, high specific strength and good fatigue resistance, the longitudinal bars are relatively close to each other. Compared with the traditional ordinary steel bar, its corrosion resistance is significantly improved; the end bracket is composed of a plurality of support rods intersecting the central axis of the polygonal prism, and the two ends of each support rod are fixedly connected with two opposite longitudinal ribs respectively. , the formed skeleton can effectively constrain the deformation of the concrete, thereby greatly improving the bearing capacity of the column members; as a substitute for traditional stirrups, stainless steel strands further enhance the corrosion resistance of the skeleton. When the rib is used, the construction flexibility is poor and the strength of the bending section is low. The stainless steel stranded wire does not need the step of bending and curing, and the construction flexibility is high when used with the connecting component. The stainless steel stranded wire is a flexible material, and the tensile strength at the bend is It does not weaken with the change of shape; the stainless steel stranded wire of the spiral is fixed by the connecting component, and the position of the fixed point and the spacing of the spiral stainless steel stranded wire can be easily adjusted, thereby further improving the construction flexibility.

In a possible design manner, the end bracket is also arranged in the middle of the plurality of longitudinal ribs.

In a possible design, the support rod includes a first rod and a second rod; two ends of the first rod are respectively threadedly connected with the second rod, and the second rod is screwed to Adjust the length of the support rod.

In a possible design, the first rod and/or the second rod is provided with a scale.

In a possible design manner, the end of the second rod is connected with a fastener in rotation, and the longitudinal rib is penetrated and fixed in the fastener.

In a possible design, the end of the second rod and the fastener are rotatably connected through a rotating structure; the rotating structure includes an accommodating groove and a groove wall slidably connected to the accommodating groove. A round cake, one of the end of the second rod and the fastener is provided with the round cake, and the other of the two is provided with the accommodating groove.

In a possible design manner, a series hole is provided in the middle of the support rod, and a plurality of the support rods can be fixedly connected through the bolt assembly and the series hole.

In a possible design manner, the connection component includes a fixedly connected cable tie and a hoop assembly; the cable tie is connected with the longitudinal rib, and the hoop assembly is connected with the stainless steel stranded wire.

On the other hand, the technical scheme that this application also provides is: a kind of construction method of concrete column skeleton, comprises the following steps:

Determine the number of longitudinal ribs and the number of support rods on the end bracket according to the design situation, and fix the support rods with the longitudinal ribs, so that a plurality of the longitudinal ribs are connected to each other through the end bracket;

According to the design spacing of the stainless steel strands, the connecting components are arranged at the corresponding positions of the plurality of longitudinal ribs;

One end of the stainless steel stranded wire is fixedly connected to the end of any one of the longitudinal ribs, and then the stainless steel stranded wire is spirally arranged in the height direction of the skeleton according to the design spacing, and is connected with the connection components at the corresponding positions. Actively preconnect;

After the stainless steel stranded wire is arranged, prestress is applied to the other end of the stainless steel stranded wire, so that the stainless steel stranded wire is tightened on the outer surface of the plurality of longitudinal ribs, and then the connection assembly is fastened so that the The plurality of longitudinal ribs and the stainless steel strands are fixed at each contact point, so that the stainless steel strands are always in a tensioned state on the outer surfaces of the plurality of longitudinal ribs, and finally a complete skeleton is formed.

The construction method of the concrete column frame in the present application has many significant practical advantages such as fast and convenient construction, high adaptability, and relatively economical efficiency, and can be widely used in the civil engineering industry. improvement.

In a possible design method, when prestressing the other end of the stainless steel stranded wire, if the longitudinal rib is concavely deformed due to the inward hoop force of the stainless steel stranded wire, add all the required amount to the deformation place. The end face bracket is fixedly connected to the support rod and the longitudinal rib.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are For some embodiments of the present application, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

1 is a schematic diagram of a concrete column skeleton provided in an embodiment of the present invention;

2 is a schematic diagram of an end face support provided by an embodiment of the present invention;

3 is a cross-sectional view of a second rod and a fastener provided in an embodiment of the present invention;

4 is a schematic diagram of a connection assembly provided by an embodiment of the present invention;

Fig. 5 is the enlarged view of A place in Fig. 1;

FIG. 6 is a schematic diagram of the start end of the spiral arrangement of the stainless steel stranded wire provided by an embodiment of the present invention;

FIG. 7 is a schematic diagram of a concrete column skeleton provided in an embodiment of the present invention during construction.

Reference numerals: 10, longitudinal ribs; 20, end bracket; 21, support rod; 211, first rod; 212, second rod; 2121, accommodating groove; 30, stainless steel strand; 40, connecting assembly; 41, Cable ties; 42, hoop assembly; 50, fasteners; 51, round cake; 60, aluminum chuck; 70, tensioner.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

In the description of the present application, "plurality" means at least two, such as two, three, etc., unless expressly and specifically defined otherwise. In this application, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication between two elements or the interaction relationship between the two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In this application, unless otherwise expressly stated and defined, a first feature "on" or "under" a second feature may be in direct contact with the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this application, it should be understood that the orientation or positional relationship (if any) indicated by the terms "inside", "outside", "upper", "bottom", "front", "rear", etc. is The orientation or positional relationship shown in FIG. 1 is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot It is construed as a limitation of this application.

It should also be noted that, in the embodiments of the present application, the same reference numerals are used to represent the same component or the same component, and for the same components in the embodiments of the present application, only one of the parts or components may be marked as an example in the drawings. Where reference numerals are used, it should be understood that the same reference numerals apply to other identical parts or components.

The performance degradation or even destruction of concrete structures caused by steel corrosion has become a serious problem facing the world, which seriously threatens structural safety and social and economic development. The corrosion of steel skeleton inside concrete has the characteristics of universality, concealment, gradualness and suddenness, which not only consumes resources and pollutes the environment, but also easily induces engineering accidents and endangers human health and safety. Just as the United States experienced a period of large-scale infrastructure construction, the economic losses caused by corrosion alone accounted for 4-5% of the total GDP. With the steady implementation of my country's "marine strategy" goals and the gradual advancement of sea sand resource utilization, how to effectively solve the problem of steel corrosion in concrete structures has become more and more urgent. Corrosion of steel bars has become a potential threat that cannot be ignored in structural safety and sustainable social and economic development, and has become a serious problem that all countries need to face in the field of civil engineering.

At present, scholars at home and abroad mainly carry out research from three perspectives of "prevention", "resistance" and "governance" on the problems of solving corrosion and improving durability of concrete structures. The coating-rust resistance method is to protect the new structure or maintain the existing structure from the perspective of "prevention". The special steel bar is to improve the ability of the structural material itself to resist medium erosion from the perspective of "resistance". It is to repair and control the corroded concrete structure from the perspective of "governance". Among them, it is most effective to solve the corrosion problem from the perspective of the material itself. FRP material has the advantages of light weight, high strength and corrosion resistance. It has been widely used in the field of building construction and structural reinforcement, and has become an important material to solve the problem of structural durability caused by corrosion of steel bars. However, the stirrup must be bent before the resin is cured, which greatly reduces the flexibility of construction, and the strength of the bending section is only about 40% of the tensile strength of the material, so it is not suitable for use as a hoop tendons. Under such background requirements, high-strength stainless steel stranded wire 30 is a good choice. Compared with ordinary steel bars, it has the advantages of corrosion resistance, high strength, and more processing flexibility than FRP steel bars. Therefore, high-strength stainless steel stranded wire 30 It has significant advantages in stirrups used for on-site construction of new concrete structures with high durability, and can also be used in seawater and sea sand concrete structures. However, the high-strength stainless steel stranded wire 30 needs to be wound on a longitudinal rib skeleton with a certain rigidity and reach a certain tension state in order to fully exert its strength, which brings challenges to on-site construction.

In order to overcome the above-mentioned technical bottleneck, make sea sand can be utilized as resources as soon as possible safely, and at the same time improve the skeleton construction speed of column members in concrete structures, etc., the technical solution provided by the application is: as shown in Figure 1, a concrete column skeleton, Including longitudinal ribs 10 , end brackets 20 , stainless steel strands 30 and connecting components 40 . The longitudinal rib 10 is made of the inner core of the steel bar covered with the FRP layer, and the plurality of longitudinal ribs 10 are arranged in the shape of a polygonal prism. The end brackets 20 are arranged at both ends of the plurality of longitudinal ribs 10. The end brackets 20 are composed of a plurality of supporting rods 21 connected to each other and intersecting the central axis of the polygonal prism. The longitudinal ribs 10 in opposite positions are fixedly connected. The stainless steel strands 30 are helically arranged along the outer circumference of the plurality of longitudinal ribs 10 . The connecting component 40 is disposed at the connection between the stainless steel stranded wire 30 and the longitudinal rib 10 , and is used for fixedly connecting the stainless steel stranded wire 30 and the longitudinal rib 10 .

In the concrete column skeleton of the present application, the longitudinal ribs 10 are made of the inner core of the steel bar and the outer layer of FRP. Since the FRP material has good corrosion resistance, high specific strength, good fatigue resistance and other advantages, the longitudinal ribs 10 are 10 Compared with the traditional ordinary steel bar, its corrosion resistance is significantly improved; the end bracket 20 is composed of a plurality of support rods 21 intersecting with the central axis of the polygonal prism, and the two ends of each support rod 21 are respectively corresponding to two relative positions. The longitudinal reinforcement 10 is fixedly connected, and the skeleton formed by this can effectively constrain the deformation of the concrete, thereby greatly improving the bearing capacity of the column member; the stainless steel stranded wire 30, as an alternative material for the traditional stirrup, further enhances the corrosion resistance of the skeleton At the same time, compared with the defects of poor construction flexibility and low bending section strength when FRP reinforcement is used as a stirrup, the stainless steel stranded wire 30 does not need the step of bending and curing, and the construction flexibility is high when used with the connecting component 40, and the stainless steel stranded wire 30 has high construction flexibility. The wire 30 is a flexible material, and the tensile strength at the bend does not weaken with the change of shape; using the connecting component 40 to fix the spiral stainless steel stranded wire 30, the position of the fixed point and the spacing of the spiral stainless steel stranded wire 30 can be easily adjusted. This further increases construction flexibility.

The concrete column skeleton in the present application has many significant practical advantages such as fast and convenient construction, high adaptability, and relatively economical, and can be widely used in the civil engineering industry, which will greatly improve the current civil engineering construction technology and efficiency.

Optionally, the connecting assembly 40 may be a separate hoop assembly 42 , a strap 41 assembly, or a combination of the hoop and the strap 41 . In the above-mentioned step 4, the stainless steel stranded wire 30 is pre-connected with the connecting component 40 before applying the prestressing force. 30 slides on the connecting assembly 40 .

Optionally, the material composition can also be flexibly changed according to the actual project usage environment, production cost and other requirements, such as replacing the longitudinal bars 10 with ordinary steel bars, or replacing the stainless steel strands 30 with ordinary steel strands, etc.

Optionally, for the plurality of support rods 21 constituting the above-mentioned end-face bracket 20 , the angle between the support rods 21 and the support rods 21 is adjustable, and the length of the support rods 21 is also adjustable. In the factory prefabrication stage, support rods 21 of different lengths can be selected according to design conditions, and different included angles can be laid out, and then welded and fixed to form an integral end bracket 20 .

Optionally, the plurality of support rods 21 constituting the end face bracket 20 are all of the same length, and the included angles between the support rods 21 are the same, so the cross-sectional shape of the skeleton is a diagonal shape, and correspondingly, the concrete column member of the skeleton is used. The cross-sectional shape is circular (the support rod 21 is located on the diameter of the circle); it is also possible that there are two support rods 21 constituting the end bracket 20, the lengths are the same, and the angles between the support rods 21 are different, so the cross-sectional shape of the skeleton is Correspondingly, the cross-sectional shape of the concrete column member using the skeleton is also rectangular (the support rod 21 is located on the diagonal of the rectangle); it is also possible that there are multiple support rods 21 constituting the end face bracket 20, and the lengths are different. The angles between the rods 21 are different, so the cross-sectional shape of the skeleton is a non-regular polygon. Correspondingly, the cross-sectional shape of the concrete column member using the skeleton is elliptical (the support rod 21 is located on the chord passing through the center of the ellipse).

The above-mentioned convenient selection can be better applied to common projects such as a large number of residential buildings and infrastructure, and also has many significant practical advantages such as fast and convenient construction, high adaptability, and relatively economical.

In one embodiment, the end bracket 20 is also arranged in the middle of the plurality of longitudinal ribs 10 .

As mentioned above, in the actual construction process, it is also necessary to apply prestress to the stainless steel stranded wire 30 so that the stainless steel stranded wire 30 is stretched on the outer surface of the skeleton, that is, the stainless steel stranded wire 30 is on the outer surface of the longitudinal rib 10. Therefore, if the length of the longitudinal rib 10 is too large, the support strength in the middle will inevitably decrease, so that when prestressing the stainless steel stranded wire 30, it is easy to cause concave deformation in the middle of the longitudinal rib 10. In order to solve this problem, the middle parts of the plurality of longitudinal ribs 10 are also connected and supported by the end brackets 20 .

In one embodiment, the support rod 21 is a telescopic support rod 21 .

As mentioned above, in the prefabrication stage in the factory, support rods 21 with different lengths can be selected for welding and fixing to form the end face bracket 20 . In this embodiment, in order to further improve the construction flexibility, the support rod 21 can be designed as a telescopic support rod 21, and the length of the support rod 21 can be adjusted at any time on the construction site.

Optionally, the telescopic support rod 21 may be a threaded telescopic rod or a bolt telescopic rod.

As shown in FIG. 2 , in one embodiment, the support rod 21 includes a first rod 211 and a second rod 212 ; the two ends of the first rod 211 are respectively threadedly connected with the second rods 212 . By screwing the second rods 212 to adjust the length of the support rod 21 .

In this embodiment, the support rod 21 is a threaded telescopic rod, including a first rod 211 and a second rod 212 . The first rod 211 can be a sleeve, the corresponding second rod 212 is an inner rod inserted into the sleeve, in addition, the first rod 211 can also be an inner rod, and the corresponding second rod 212 is a sleeve sleeved outside the inner rod . In addition, the two ends of the first rod 211 can also be set as a sleeve and an inner rod, respectively, and the corresponding two second rods 212 are respectively an inner rod and a sleeve.

In one embodiment, the first rod 211 and/or the second rod 212 are provided with scales.

In order to adjust the length of the support rod 21 conveniently, scales are provided on the first rod 211 and/or the second rod 212 . It has the advantages of flexible adjustment, strong adaptability and easy operation.

In one embodiment, the end of the second rod 212 is connected to the fastener 50 in rotation, and the longitudinal rib 10 is penetrated and fixed in the fastener 50 .

As mentioned above, the two ends of each support rod 21 are respectively fixedly connected with two longitudinal ribs 10 at opposite positions. In this embodiment, the two ends of the support rod 21 are the ends of the two second rods 212 . An annular fastener 50 is rotated and connected at the end of the second rod 212, the fastener 50 is sleeved on the outside of the longitudinal rib 10, and then the two are fixed by welding. The fasteners 50 in this embodiment are to facilitate the positioning of the longitudinal ribs 10 , thereby improving the construction efficiency, and at the same time, the fasteners 50 are rotatably connected to the ends of the second rods 212 to meet the requirements of adjusting the length of the support rods 21 by screwing .

Optionally, the end of the second rod 212 is rotated to connect the fastener 50, and can be connected through a bearing. Specifically, the outer ring of the bearing is fixed to the end of the second rod 212 , and the inner ring is fixed to the fastener 50 .

As shown in FIG. 3 , in one embodiment, the end of the second rod 212 is rotatably connected with the fastener 50 through a rotating structure; One of the round cake 51 , the end of the second rod 212 and the fastener 50 is provided with the round cake 51 , and the other of the two is provided with an accommodating groove 2121 .

In addition to the above bearing connection method, the rotational connection between the two can also be performed through a rotating structure. Specifically, an accommodating groove 2121 is defined at the end of the second rod 212 , a round cake 51 is provided on the fastener 50 , and the round cake 51 can slide and rotate in the accommodating groove 2121 .

Optionally, the above-mentioned accommodating groove 2121 and the round cake 51 can also be interchanged to set the base body, that is, the end of the second rod 212 is provided with the round cake 51 , and the fastener 50 is provided with the accommodating groove 2121 .

In this embodiment, the accommodating groove 2121 and the round cake 51 can be prefabricated in the factory, and then the end of the second rod 212 is connected with the fastener 50, which can improve the efficiency of on-site construction.

In one embodiment, the fastener 50 is the hoop assembly 42 .

In addition to the above-mentioned fasteners 50 being sleeved and welded on the outside of the longitudinal ribs 10 , the fixed connection manner of the fasteners 50 and the longitudinal ribs 10 can also be realized by the hoop assembly 42 .

In one embodiment, a series hole is formed in the middle of the support rod 21 , and the plurality of support rods 21 can be fixedly connected through the bolt assembly and the series hole.

As mentioned above, in the prefabrication stage of the factory, different lengths of support rods 21 can be selected according to design conditions, and different included angles can be arranged, and then welded and fixed to form an integral end bracket 20 . In the previous embodiment, it has been explained that the length of the support rod 21 can be adjusted. Correspondingly, the included angle of the support rod 21 can also be adjusted at the construction site.

Specifically, a series hole is opened in the middle of each support rod 21, the head of the bolt is fixed by a clamp, the rod part is vertically upward, and then the series holes of the support rod 21 are sleeved to the support rod 21 one by one, and the support is adjusted according to the design situation. The included angle between the rods 21 is finally screwed with nuts to fix the plurality of support rods 21 to form the end face bracket 20 .

As shown in FIGS. 4-5 , in one embodiment, the connection assembly 40 includes a fixedly connected cable tie 41 and a hoop assembly 42 ; the cable tie 41 is connected with the longitudinal ribs 10 , and the hoop assembly 42 is connected with the stainless steel stranded wire 30 . .

In this embodiment, the connecting component 40 is a combination of a cable tie 41 and a hoop assembly 42 , wherein the cable tie 41 is connected with the longitudinal ribs 10 , and the hoop assembly 42 is connected with the stainless steel stranded wire 30 . Before prestressing the stainless steel stranded wire 30, after the stainless steel stranded wire 30 passes through the hoop assembly 42, the hoop assembly 42 can be lightly locked, and a part of the bolts can be screwed in, so as to ensure that the stainless steel stranded wire 30 can be used in subsequent Does not fall off and slides under traction.

Preferably, the cable tie 41 and the hoop assembly 42 are integrally formed, and the transition connection between the two is designed as thin as possible, so that the stainless steel stranded wire 30 and the longitudinal rib 10 can be closely attached.

In addition, the material of the connecting component 40 is stainless steel, but other inexpensive materials can be selected to replace the metal if the cost of the device needs to be reduced, but the material needs to be smooth in texture to meet the sliding requirements of the stainless steel stranded wire 30 . For example, polytetrafluoroethylene can be selected.

As shown in FIG. 4 , in one embodiment, the hoop assembly 42 is a hinged hoop.

The hoop assembly 42 may be a split hoop, but such a hoop has a large number of parts and components, which are easy to lose, and the installation and construction are complicated. Therefore, in this embodiment, a hinged hoop is preferably used, and only one bolt is needed to complete the installation.

On the other hand, the technical scheme that this application also provides is: a kind of construction method of concrete column skeleton, comprises the following steps:

Step 1, as shown in FIG. 1 , configure a number of longitudinal ribs 10 according to design requirements, and determine the number of support rods 21 on the end bracket 20 according to the number of longitudinal ribs 10 . The ends of the support rods 21 are welded or fixed on the longitudinal ribs 10 by the fasteners 50 , so that the longitudinal ribs 10 are connected to each other through the end brackets 20 .

Step 2, according to the designed spacing of the stainless steel stranded wires 30, the connection components 40 are installed and arranged on the longitudinal ribs 10.

Step 3, as shown in FIG. 6, one end of the stainless steel stranded wire 30 is fixedly connected to the end of one of the longitudinal ribs 10 at the bottom of the skeleton by welding, the hoop assembly 42, the aluminum clip 60, etc., and then the stainless steel stranded wire is connected. 30 is spirally arranged from bottom to top, and the stainless steel stranded wire 30 is movably pre-connected with the connecting component 40 .

Step 4, as shown in FIG. 7, connect the other end of the stainless steel stranded wire 30 to the tension device 70 or the loading pump, and the stainless steel stranded wire 30 is pulled by the tension device 70 or the loading pump, and prestress is applied according to the design to make the stainless steel stranded wire 30 tight. Stretched on the outer surface of the skeleton, and then fastened the connection assembly 40, so that the longitudinal rib 10 and the stainless steel stranded wire 30 are fixed at their respective contact points, so that the spiral stainless steel stranded wire 30 is always in a tensioned state on the outer surface of the longitudinal rib 10, Cut off the excess helical stainless steel strands 30, and finally a complete skeleton is formed.

The construction method of the concrete column frame in the present application has many significant practical advantages such as fast and convenient construction, high adaptability, and relatively economical efficiency, and can be widely used in the civil engineering industry. improvement.

In an embodiment, in step 1, the ratio of the number of longitudinal ribs 10 to the number of support rods 21 on a single end bracket 20 is 2:1. In this embodiment, as shown in FIG. 1 , the number of longitudinal ribs 10 is 8, and the number of support rods 21 on a single end bracket 20 is 4.

In an embodiment, in step 1, both ends of the support rod 21 may be fixed on the longitudinal rib 10 by a welding process, or fixed on the longitudinal rib 10 by a fastener 50 . Among them, the fastener 50 is preferably a hinged hoop, so that the support rod 21 and the longitudinal rib 10 can be quickly connected, and the construction efficiency is further improved.

In an embodiment, in step 2, the connecting assembly 40 is composed of a cable tie 41 and a hoop assembly 42. The cable tie 41 is bound to the longitudinal rib 10. When the cable tie 41 is not fastened, the cable tie 41 can be Slide up along the longitudinal rib 10 to adjust the position of the connecting assembly 40 relative to the longitudinal rib 10, and then fasten the cable tie 41 after the position is determined.

In an embodiment, in step 3, it can also be fixedly connected to the end of one of the longitudinal ribs 10 on the top of the skeleton, and then the stainless steel stranded wire 30 is spirally arranged from top to bottom. During the arrangement, the stainless steel stranded wire 30 and the The connection assembly 40 is pre-connected movably, that is to say, as shown in FIG. 5 , after the stainless steel stranded wire 30 passes through the hoop assembly 42, the hoop assembly 42 can be slightly locked, and a part of the bolts can be screwed in to ensure the stainless steel Stranded wire 30 does not fall off and can slide under subsequent pulling.

In an embodiment, in step 4, the other end of the stainless steel stranded wire 30 is connected to the tensioner 70 or the loading pump, and the designed prestress is applied. The pulling force device 70 adopts the differential pulley pulling force device 70, and the loading pump can adopt the hydraulic loading pump.

In one embodiment, step 4 also includes the following steps:

When prestressing the other end of the stainless steel stranded wire 30, if the longitudinal rib 10 is concavely deformed due to the inward hoop force of the stainless steel stranded wire 30, an end bracket 20 is added at the deformation place, and the support rod 21 is connected with the longitudinal rib. 10 Fixed connection, the specific connection method is similar to that in step one.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims (4)

1. a concrete column skeleton, is characterized in that, comprises: a longitudinal rib (10), the longitudinal rib (10) is made of an inner core of a steel bar and an outer FRP layer, and a plurality of the longitudinal ribs (10) are arranged in the shape of a polygon; End-face supports (20), the end-face supports (20) are arranged at both ends of the plurality of longitudinal ribs (10), and the end-face supports (20) are connected with each other and intersect with the polygonal prism. The central axis is composed of support rods (21), and the two ends of each support rod (21) are respectively fixedly connected with the longitudinal ribs (10) at two opposite positions; Stainless steel strands (30), the stainless steel strands (30) are helically arranged along the outer circumference of the plurality of longitudinal ribs (10); A connection assembly (40), the connection assembly (40) is arranged at the connection between the stainless steel stranded wire (30) and the longitudinal rib (10), and is used for connecting the stainless steel stranded wire (30) to the longitudinal The ribs (10) are fixedly connected; A series hole is provided in the middle of the support rod (21), and a plurality of the support rods (21) can be fixedly connected through the bolt assembly and the series hole; between the support rod (21) and the support rod (21) The included angle is adjustable, and the length of the support rod (21) is also adjustable; The support rod (21) includes a first rod (211) and a second rod (212); two ends of the first rod (211) are respectively connected with the second rod (212) by screwing The second rod (212) is used to adjust the length of the support rod (21); the end of the second rod (212) is rotatably connected to an annular fastener (50), the fastener (50) ) inside and fix the longitudinal ribs (10); The connecting assembly (40) includes a fixedly connected cable tie (41) and a hoop assembly (42); the cable tie (41) is connected with the longitudinal rib (10), and the hoop assembly (42) is connected with the The stainless steel stranded wire (30) is connected; The first rod (211) and/or the second rod (212) are provided with scales; The end of the second rod (212) is rotatably connected with the fastener (50) through a rotating structure; The rotating structure includes an accommodating groove (2121) and a round cake (51) slidably connected with the groove wall of the accommodating groove (2121), the end of the second rod (212) and the fastener One of the two (50) is provided with the round cake (51), and the other of the two is provided with the accommodating groove (2121). 2 . The concrete column frame according to claim 1 , wherein the end support ( 20 ) is further arranged in the middle of the plurality of longitudinal ribs ( 10 ). 3 . 3. the construction method of the concrete column frame as described in any one of claim 1-2, is characterized in that, comprises the steps: The number of longitudinal ribs (10) and the number of support rods (21) on the end bracket (20) are determined according to the design situation, and the support rods (21) are fixedly connected to the longitudinal ribs (10), so that a plurality of all The longitudinal ribs (10) are connected to each other through the end support (20); the end support (20) is composed of a plurality of support rods (21) connected to each other and intersecting the central axis of the polygonal prism, Both ends of each of the support rods (21) are respectively fixedly connected with the longitudinal ribs (10) at two opposite positions; the included angle between the support rod (21) and the support rod (21) is adjustable, The length of the support rod (21) is also adjustable; the support rod (21) includes a first rod (211) and a second rod (212); two ends of the first rod (211) are respectively screwed together There is the second rod (212), the length of the support rod (21) is adjusted by screwing the second rod (212), the first rod (211) and/or the second rod ( 212) A scale is provided; the end of the second rod (212) is rotatably connected to an annular fastener (50), and the fastener (50) passes through and fixes the longitudinal rib (10); According to the design spacing of the stainless steel strands (30), a connecting assembly (40) is arranged at the corresponding position of the plurality of longitudinal ribs (10), and the connecting assembly (40) includes a fixedly connected cable tie (41) and an embracing strap (41). a hoop assembly (42); the cable tie (41) is connected with the longitudinal rib (10), and the hoop assembly (42) is connected with the stainless steel strand (30); One end of the stainless steel stranded wire (30) is fixedly connected to the end of any one of the longitudinal ribs (10), and then the stainless steel stranded wire (30) is spirally arranged in the height direction of the skeleton according to the design spacing, and Actively pre-connecting with the connecting assembly (40) at the corresponding position; After the stainless steel stranded wire (30) is arranged, prestress is applied to the other end of the stainless steel stranded wire (30), so that the stainless steel stranded wire (30) is taut on the plurality of longitudinal ribs (10). The outer surface, and then the connecting assembly (40) is fastened, so that the plurality of longitudinal ribs (10) and the stainless steel stranded wire (30) are fixed at each contact point, so that the stainless steel stranded wire (30) is The outer surfaces of the plurality of longitudinal ribs (10) are always in a state of tension, and finally a complete skeleton is formed. 4. The construction method according to claim 3, characterized in that when prestressing the other end of the stainless steel stranded wire (30), if the longitudinal rib (10) is caused by the stainless steel stranded wire (30) The end face support (20) is added at the deformation place, and the support rod (21) is fixedly connected with the longitudinal rib (10).

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