Prefabricated stiff column connecting structure
Through the three-stage steel pipe connection structure and concrete grouting, the difficulty and eccentric connection problems of the upper and lower sections of the steel-concrete composite structure are solved, and higher bearing capacity and construction efficiency are achieved, and the development of steel-concrete assembly is promoted.
Patent Information
- Application Number
- CN202420715204.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-09
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-09
AI Technical Summary
The connection between the upper and lower sections of the existing steel-concrete composite structure is difficult and there is a problem of eccentric connection, which affects the bearing capacity.
A three-stage steel pipe connection structure is adopted, through welding of the upper, lower and middle section steel pipes and concrete grouting, the simple and safe connection of prefabricated stiff columns is achieved, the node bearing capacity is enhanced and the eccentric connection problem is solved.
The installation process is simplified, the bearing capacity of the nodes is improved, the eccentric connection problem is solved, and the scaffolding and formwork projects are reduced for construction are reduced, which promotes the development of steel-concrete assembly.
Smart Images
Figure CN222295318U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of building structures, in particular to a prefabricated rigid column connection structure. Background Art
[0002] With the advancement of building industrialization, steel-concrete composite structures based on prefabricated rigid columns and steel beams are becoming more and more widely used due to their superiority. However, the connection between the upper and lower sections of this steel-concrete composite structure is somewhat difficult. The existing traditional methods weaken the bearing capacity, and there is an eccentric connection problem between the column and the steel beam. Therefore, the above problems urgently need effective solutions. Utility Model Content
[0003] In view of the difficulties in connecting the upper and lower sections of the above-mentioned existing steel-concrete composite structures, and the shortcomings of eccentric connection between columns and steel beams, the applicant provides a prefabricated rigid column connection structure with a more reasonable structure. The connection is carried out through conversion of steel pipes and concrete, and the use of three-section steel pipe connection can achieve simple and convenient installation, safety and reliability, which not only enhances the bearing capacity of the nodes, but also solves the problems of eccentric connection between columns and steel beams.
[0004] The technical solution adopted by the utility model is as follows:
[0005] A prefabricated rigid column connection structure comprises an upper prefabricated rigid column, an upper steel pipe, a middle steel pipe, a lower steel pipe and a lower prefabricated rigid column. The upper prefabricated rigid column is a rectangular column cast by concrete and a steel core. An upper steel pipe is arranged inside the lower end of the upper prefabricated rigid column. The lower end of the upper steel pipe extends out of the lower end of the upper prefabricated rigid column. The interior of the upper steel pipe is cast concrete. The lower prefabricated rigid column is a rectangular column cast by concrete and a steel core. A lower steel pipe is arranged inside the upper end of the lower prefabricated rigid column. The interior of the lower steel pipe is cast concrete. The middle steel pipe is located above the lower steel pipe. The interior of the middle steel pipe is cast concrete. The middle steel pipe and the lower steel pipe are connected by welding or formed in one piece. The upper steel pipe and the middle steel pipe are welded together for installation.
[0006] As a further improvement of the above technical solution:
[0007] The upper steel pipe is a rectangular steel pipe embedded in the lower end of the upper prefabricated rigid column, the lower steel pipe is a rectangular steel pipe embedded in the upper end of the lower prefabricated rigid column, and the middle steel pipe is a rectangular steel pipe.
[0008] A plurality of vertical longitudinal steel bars are embedded in the interior of the upper prefabricated rigid column. The longitudinal steel bars are distributed in a rectangular shape and are hooped by stirrups in the transverse direction to form a steel bar frame.
[0009] The outer periphery of the upper steel pipe is in contact with the longitudinal steel bars of the upper prefabricated rigid column and are connected together by welding.
[0010] A plurality of vertical longitudinal steel bars are embedded in the interior of the lower prefabricated rigid column. The longitudinal steel bars are distributed in a rectangular shape and are laterally clamped by stirrups to form a steel frame.
[0011] The outer periphery of the lower section steel pipe is in contact with the longitudinal reinforcement of the lower section prefabricated rigid column and is connected together by welding.
[0012] The upper end of the upper steel pipe is connected to the internal steel core flange of the upper prefabricated rigid column by equal strength welding, and the lower steel pipe is connected to the internal steel core flange of the lower prefabricated rigid column by equal strength welding at the lower section.
[0013] The lower section inside the upper section of the steel pipe is a hollow spaced area, in which concrete is not poured in advance, and grouting holes are opened on the side wall of the upper section of the steel pipe at the spaced area.
[0014] The grouting holes are opened on the front and rear opposite side walls of the upper steel pipe.
[0015] The upper prefabricated rigid column and the upper steel pipe are prefabricated and connected together before leaving the factory, and the middle steel pipe, the lower steel pipe and the lower prefabricated rigid column are prefabricated and connected together before leaving the factory.
[0016] The beneficial effects of the utility model are as follows:
[0017] The utility model converts and connects the upper and lower sections of the prefabricated rigid column through steel pipes and concrete, adopts three-section steel pipe connection, the steel pipe is divided into three sections, namely, a lower section steel pipe, a middle section steel pipe and an upper section steel pipe, the lower section steel pipe and the middle section steel pipe are welded together in advance, the lower section prefabricated rigid column and the lower section steel pipe and the middle section steel pipe are connected together in a factory, the upper section steel pipe and the upper section prefabricated rigid column are also connected together in the factory, and at the site, only the upper section steel pipe and the middle section steel pipe are welded together with equal strength, and the empty area in the middle of the upper section steel pipe is filled with grouting material.
[0018] The technical advantages of the utility model are: the method is simple and convenient, safe and reliable. It not only enhances the bearing capacity of the node, but also solves the eccentric connection problem between the column and the steel beam, and does not require scaffolding and formwork engineering, thus promoting the development of steel-concrete assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the utility model.
[0020] Figure 2 It is a schematic diagram of the utility model.
[0021] Figure 3 for Figure 2 Cross-sectional view of section AA.
[0022] Figure 4 for Figure 2 Cross-sectional view of section BB.
[0023] Figure 5 for Figure 2 Cross-sectional view of section CC.
[0024] Figure 6 for Figure 2 Cross-sectional view of the DD section.
[0025] Figure 7 It is a schematic diagram of the grouting hole of the utility model.
[0026] In the figure: 1. Upper prefabricated rigid column; 2. Upper steel pipe; 3. Middle steel pipe; 4. Lower steel pipe; 5. Lower prefabricated rigid column; 6. Longitudinal steel bars; 7. Stirrups; 8. Empty area; 9. Grouting holes; 10. Steel beam. DETAILED DESCRIPTION
[0027] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.
[0028] like Figures 1 to 7 As shown, the prefabricated rigid column connection structure of the utility model comprises an upper prefabricated rigid column 1, an upper steel pipe 2, a middle steel pipe 3, a lower steel pipe 4 and a lower prefabricated rigid column 5. The upper prefabricated rigid column 1 is a rectangular column cast by concrete and a steel core, and the steel core is embedded in the concrete. A plurality of vertical longitudinal steel bars 6 are also embedded in the upper prefabricated rigid column 1, and the longitudinal steel bars 6 are distributed in a rectangular shape. The longitudinal steel bars 6 are hooped by stirrups 7 in the transverse direction to form a steel frame.
[0029] An upper steel pipe 2 is provided inside the lower end of the upper prefabricated rigid column 1. The upper steel pipe 2 is a rectangular steel pipe, embedded in the lower end of the upper prefabricated rigid column 1, and the lower end of the upper steel pipe 2 extends out of the lower end of the upper prefabricated rigid column 1. The upper end of the upper steel pipe 2 is welded with equal strength to the internal steel core of the upper prefabricated rigid column 1. The outer periphery of the upper steel pipe 2 is in contact with the longitudinal steel bars 6 of the upper prefabricated rigid column 1, and they are connected together by welding.
[0030] The upper steel pipe 2 is filled with cast concrete, and the lower section of the upper steel pipe 2 is a hollow space 8, in which concrete is not poured in advance, and a grouting hole 9 is provided on the side wall of the upper steel pipe 2 at the position of the space 8. The grouting hole 9 is preferably provided on the front and rear opposite side walls of the upper steel pipe 2. The upper prefabricated rigid column 1 and the upper steel pipe 2 are prefabricated and connected together before leaving the factory.
[0031] The lower prefabricated rigid column 5 is a rectangular column cast by concrete and a steel core, and the steel core is embedded in the concrete. A plurality of vertical longitudinal steel bars 6 are also embedded in the lower prefabricated rigid column 5, and the longitudinal steel bars 6 are arranged in a rectangular shape, and the longitudinal steel bars 6 are hooped by stirrups 7 in the transverse direction to form a steel frame.
[0032] A lower steel pipe 4 is provided inside the upper end of the lower prefabricated rigid column 5. The lower steel pipe 4 is a rectangular steel pipe, embedded in the upper end of the lower prefabricated rigid column 5, and the lower steel pipe 4 is welded with the internal steel core flange of the lower prefabricated rigid column 5 with equal strength. The outer periphery of the lower steel pipe 4 is in contact with the longitudinal steel bars 6 of the lower prefabricated rigid column 5, and they are connected together by welding. The lower steel pipe 4 has cast concrete inside.
[0033] The middle section steel pipe 3 is located above the lower section steel pipe 4. The middle section steel pipe 3 is a rectangular steel pipe, and the middle section steel pipe 3 is filled with cast concrete. The middle section steel pipe 3 and the lower section steel pipe 4 are connected by welding or integrally formed. The middle section steel pipe 3, the lower section steel pipe 4, and the lower section prefabricated rigid column 5 are prefabricated and connected together before leaving the factory. The middle section steel pipe 3 is also connected to the transversely arranged steel beam 10.
[0034] During on-site construction, the upper steel pipe 2 and the middle steel pipe 3 are welded with equal strength, and the empty area 8 is filled with grouting through the grouting holes 9 to achieve the connection and installation of the upper prefabricated rigid column 1, the upper steel pipe 2, the middle steel pipe 3, the lower steel pipe 4 and the lower prefabricated rigid column 5.
[0035] The utility model is to convert and connect the upper and lower sections of the prefabricated rigid column through steel pipes and concrete, and adopt three sections of steel pipe connection. The steel pipe is divided into three sections, namely, the upper section steel pipe 2, the middle section steel pipe 3 and the lower section steel pipe 4. The lower section steel pipe 4 and the middle section steel pipe 3 are pre-welded together during prefabrication. The lower section prefabricated rigid column 5 is already connected with the lower section steel pipe 4 and the middle section steel pipe 3 in the factory, that is, the steel core of the lower section prefabricated rigid column 5 is already welded with the lower section steel pipe 4 and the middle section steel pipe 3 as finished components in the steel structure processing factory and shipped out of the factory, and the longitudinal steel bars 6 of the lower section prefabricated rigid column 5 are welded with the lower section steel pipe 4 in the concrete prefabrication factory.
[0036] The upper prefabricated rigid column 1 and the upper steel pipe 2 are also connected together in the factory, that is, the steel core of the upper prefabricated rigid column 1 and the upper steel pipe 2 have been welded together as finished components in the steel structure processing plant and shipped out of the factory, and the steel bars of the upper prefabricated rigid column 1 and the upper steel pipe 2 are welded together in the concrete prefabrication plant.
[0037] At the site, the connection construction of the prefabricated rigid column can be realized by welding the upper steel pipe 2 and the middle steel pipe 3 of the upper prefabricated rigid column 1 to the same strength and filling the empty area 8 with grouting material.
[0038] The above description is an explanation of the utility model, not a limitation of the utility model. The utility model can be modified in any form without violating the spirit of the utility model.
Claims
1. A prefabricated rigid column connection structure, characterized in that: The invention comprises an upper prefabricated rigid column (1), an upper steel pipe (2), a middle steel pipe (3), a lower steel pipe (4) and a lower prefabricated rigid column (5). The upper prefabricated rigid column (1) is a rectangular column cast by concrete and a steel core. The lower end of the upper prefabricated rigid column (1) is provided with an upper steel pipe (2). The lower end of the upper steel pipe (2) extends out of the lower end of the upper prefabricated rigid column (1). The upper steel pipe (2) contains cast concrete. The lower prefabricated rigid column (5) is provided with an upper steel pipe (2). ) is a rectangular column cast by concrete and a steel core, wherein a lower steel pipe (4) is provided inside the upper end of a lower prefabricated rigid column (5), and the interior of the lower steel pipe (4) is cast concrete; a middle steel pipe (3) is located above the lower steel pipe (4), and the interior of the middle steel pipe (3) is cast concrete, and the middle steel pipe (3) and the lower steel pipe (4) are connected by welding or integrally formed, and the upper steel pipe (2) and the middle steel pipe (3) are welded together for installation.
2. The prefabricated rigid column connection structure according to claim 1, characterized in that: The upper steel pipe (2) is a rectangular steel pipe embedded in the lower end of the upper prefabricated rigid column (1); the lower steel pipe (4) is a rectangular steel pipe embedded in the upper end of the lower prefabricated rigid column (5); and the middle steel pipe (3) is a rectangular steel pipe.
3. The prefabricated rigid column connection structure according to claim 1, characterized in that: A plurality of vertical longitudinal steel bars (6) are embedded in the upper prefabricated rigid column (1), and the longitudinal steel bars (6) are distributed in a rectangular shape. The longitudinal steel bars (6) are hooped by stirrups (7) in the transverse direction to form a steel bar frame.
4. The prefabricated rigid column connection structure according to claim 3, characterized in that: The outer periphery of the upper steel pipe (2) and the longitudinal steel bars (6) of the upper prefabricated rigid column (1) are in contact with each other and are connected together by welding.
5. The prefabricated rigid column connection structure according to claim 1, characterized in that: A plurality of vertical longitudinal steel bars (6) are embedded in the lower prefabricated rigid column (5), and the longitudinal steel bars (6) are distributed in a rectangular shape. The longitudinal steel bars (6) are hooped by stirrups (7) in the transverse direction to form a steel bar frame.
6. The prefabricated rigid column connection structure according to claim 5, characterized in that: The outer periphery of the lower steel pipe (4) and the longitudinal steel bars (6) of the lower prefabricated rigid column (5) are in contact with each other and are connected together by welding.
7. The prefabricated rigid column connection structure according to claim 1, characterized in that: The upper end of the upper steel pipe (2) is welded to the inner steel core flange of the upper prefabricated rigid column (1) with equal strength, and the lower steel pipe (4) is welded to the inner steel core flange of the lower prefabricated rigid column (5) with equal strength.
8. The prefabricated rigid column connection structure according to claim 1, characterized in that: The lower section inside the upper steel pipe (2) is a hollow spaced area (8), in which concrete is not poured in advance, and a grouting hole (9) is provided on the side wall of the upper steel pipe (2) at the spaced area (8).
9. The prefabricated rigid column connection structure according to claim 8, characterized in that: The grouting holes (9) are provided on two opposite side walls, front and rear, of the upper steel pipe (2).
10. The prefabricated rigid column connection structure according to claim 1, characterized in that: The upper prefabricated rigid column (1) and the upper steel pipe (2) are prefabricated and connected together before leaving the factory, and the middle steel pipe (3) and the lower steel pipe (4) and the lower prefabricated rigid column (5) are prefabricated and connected together before leaving the factory.