一种防变形的混凝土柱脚可修复节点
By connecting the concrete column and foundation with unbonded prestressed tendons, internal and external buckling-resisting steel plates, and anchor bolts, combined with shear-resistant components, the problem of easy deformation of traditional concrete column bases under extreme loads is solved, achieving the effects of rapid repair and reduced repair costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGXI SHUOHAN CONSTR CO LTD
- Filing Date
- 2025-08-18
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional concrete column bases are prone to irreversible plastic deformation under extreme loads, which is difficult and costly to repair, affecting the load-bearing capacity and post-earthquake functional recovery of the structure.
Unbonded prestressed tendons, inner and outer buckling-resisting steel plates, and anchor bolts are used to connect the concrete column to the foundation. Combined with shear-resistant components, this enables the column base joint to be detachably fixed and quickly repaired.
It improved the deformation resistance and load-bearing capacity of column base joints, reduced repair costs, enabled rapid repair, and improved the post-earthquake functional recovery of buildings.
Smart Images
Figure CN224514395U_ABST
Abstract
Claims
1. A deformation-proof concrete column base repairable joint comprising a concrete base (1) and a concrete column (3) which is installed vertically above the concrete base (1), characterized by: The structure includes an inner buckling-restrained steel plate assembly surrounding a concrete column (3). The inner buckling-restrained steel plate assembly, which has an L-shaped plate structure, includes two symmetrically arranged inner buckling-restrained steel plates A (5) and B (6). The bottom of the inner buckling-restrained steel plate assembly is detachably connected to the concrete foundation (1) via anchor bolts. A steel bar groove is pre-reserved in the concrete column (3). Unbonded prestressed tendons (9) are vertically inserted in the steel bar groove. The upper end of the unbonded prestressed tendons (9) is anchored above the concrete column (3) via a top anchor (20), and the lower end of the unbonded prestressed tendons (9) is anchored in the concrete foundation (1) via a bottom anchor (19). The structure also includes a surrounding... An outer reinforcing steel plate (8) is provided on the outer periphery of the inner buckling-resistance steel plate assembly, and the bottom of the outer reinforcing steel plate (8) is stacked on the bottom of the inner buckling-resistance steel plate assembly and simultaneously detachably connected to the concrete foundation (1) through an anchor bolt component; the anchor bolt component includes an internal threaded sleeve (15) pre-installed in the concrete foundation (1), and the bottom of the internal threaded sleeve (15) is fixedly connected to an anchoring steel bar (16); it also includes an anchor bolt (17), the lower end of the anchor bolt (17) passes through the bottom of the outer reinforcing steel plate (8) and the inner buckling-resistance steel plate in sequence and is threadedly connected to the threaded sleeve (15), and the upper end of the anchor bolt (17) is fixed to the outer reinforcing steel plate (8) by a nut.
2. A deformation-resistant concrete column base repairable joint according to claim 1, characterized in that: A shear-resistant member is fixedly installed on the top of the concrete column (3). The shear-resistant member includes a shear-resistant base plate (12) and a shear-resistant column base (13). The shear-resistant column base (13) is fixedly connected to the center of the shear-resistant base plate (12). A shear-resistant column base mounting sleeve (14) is movably fitted on the shear-resistant column base (13). The shear-resistant column base mounting sleeve (14) can be embedded in the shear-resistant column base mounting groove (4) and fixedly connected to the inner buckling-resistant steel plate assembly.
3. A deformation-resistant concrete column base repairable joint according to claim 2, characterized in that: The top of the concrete column (3) is provided with a shear column base mounting groove (4), the shear member is arranged in the shear column base mounting groove (4), and a cement base (2) is filled on the shear base plate (12). The top surface of the cement base (2) is flush with the top surface of the concrete column (3), and the shear column base (13) is higher than the top surface of the cement base (2) so that the shear column base mounting sleeve (14) can be completely fitted onto the shear column base (13). When the shear column base mounting sleeve (14) is fitted onto the shear column base (13), the bottom end face of the concrete column (3) is flush with the shear column base mounting groove (4).
4. A deformation-resistant concrete column base repairable joint according to claim 3, characterized in that: A through-core bolt (10) is horizontally inserted into the concrete column (3). Both ends of the through-core bolt (10) pass through the inner anti-buckling steel plate group and the outer reinforcing steel plate (8) in sequence, and are fixed to the outer reinforcing steel plate (8) by nuts.
5. A deformation resistant concrete column base repairable joint according to claim 1, characterized in that: The inner anti-buckling steel plate assembly has lightweight holes (7).