CN-121976604-A - Concrete beam column node with self-resetting-bending cooperative mechanism and working method

CN121976604ACN 121976604 ACN121976604 ACN 121976604ACN-121976604-A

Abstract

The invention provides a concrete beam column node of a self-resetting-bending cooperative mechanism and a working method, and the concrete beam column node comprises a first reinforced concrete beam and a second reinforced concrete beam, wherein the first reinforced concrete beam is horizontally arranged on a reinforced concrete column, the first reinforced concrete beam is connected with the second reinforced concrete beam through an energy consumption component, the energy consumption component comprises an energy consumption assembly, a triangular prefabricated component and a V-shaped prefabricated positioning component, the V-shaped prefabricated positioning component is fixedly arranged at the end part of the first reinforced concrete beam, the triangular prefabricated component is fixedly arranged at the end part of the second reinforced concrete beam, a triangular lug of the triangular prefabricated component is matched with a V-shaped groove seat of the V-shaped prefabricated positioning component, a fastener is arranged between the triangular lug of the triangular prefabricated component and the V-shaped groove seat of the V-shaped prefabricated positioning component in a penetrating manner, disc springs are arranged at two ends of the fastener, and the triangular prefabricated component is connected with the reinforced concrete column through the energy consumption assembly. The problems of low energy consumption efficiency, lack of self-resetting function and inconvenience in post-earthquake restoration of the traditional node are solved.

Inventors

QIU DAPENG
LI JIE
Tian Guokai
JI LEJUN
CHEN YUNJUAN
DING JINGNAN
WANG WENMING

Assignees

山东建筑大学

Dates

Publication Date: 20260505
Application Date: 20260210

Claims (10)

1. The self-resetting-bending cooperative concrete beam column node is characterized by comprising a reinforced concrete column, a first reinforced concrete beam and a second reinforced concrete beam, wherein the first reinforced concrete beam is horizontally arranged on the reinforced concrete column, and the first reinforced concrete beam is connected with the second reinforced concrete beam through an energy consumption component to form the concrete beam column node; The energy consumption component comprises an energy consumption assembly, a triangular prefabricated component and a V-shaped prefabricated positioning component, wherein the V-shaped prefabricated positioning component is fixedly arranged at the end part of the first reinforced concrete beam, the triangular prefabricated component is fixedly arranged at the end part of the second reinforced concrete beam, a triangular lug of the triangular prefabricated component is matched with a V-shaped groove seat of the V-shaped prefabricated positioning component, fastening pieces are arranged in a limiting hole on the triangular prefabricated component and a waist hole on the V-shaped prefabricated positioning component, disc springs are arranged at two ends of each fastening piece, and the triangular prefabricated component is further connected with the reinforced concrete upright post through the energy consumption assembly.
2. The concrete beam-column joint according to claim 1, wherein there are two energy consuming components respectively disposed above and below the first reinforced concrete beam, and the energy consuming components are fixedly disposed on the reinforced concrete columns.
3. The concrete beam column node of a self-resetting-bending cooperative mechanism as recited in claim 2, wherein the energy consumption assembly comprises a first fixing seat and two energy consumption steel plates which are arranged in parallel, a plurality of strip holes are formed in the energy consumption steel plates, the strip holes are arranged along the length direction of the first reinforced concrete beam, the first fixing seat is connected with the energy consumption steel plates through welding, the first fixing seat is fixedly connected with the reinforced concrete upright column through a connecting piece, and the energy consumption steel plates are connected with the triangular prefabricated member through the connecting piece.
4. A concrete beam-column joint according to claim 3, wherein the triangular prefabricated member comprises a second fixing base, two first support plates arranged in parallel and the triangular projections arranged on opposite sides of the two first support plates, and the second fixing base is fixedly mounted on the end of the first reinforced concrete beam through a connecting piece.
5. The concrete beam-column joint with the self-resetting and bending cooperative mechanism as set forth in claim 4, wherein the end of the first supporting plate is provided with a connecting hole for connecting the energy consumption steel plates, the end of the first supporting plate is arranged between the two energy consumption steel plates, and a plurality of limiting holes are arranged on the first supporting plate and the triangular convex block in a penetrating way and distributed on two inclined planes of the triangular convex block.
6. The concrete beam-column joint of claim 5, wherein the V-shaped prefabricated positioning member comprises a third fixing base, two second support plates arranged in parallel, and V-shaped groove seats arranged on opposite sides of the two second support plates, and the third fixing base is fixedly mounted on an end of the second reinforced concrete beam through a connecting piece.
7. The concrete beam column node of claim 6, wherein a plurality of waist holes are formed in the second support plate, the waist holes penetrate through the second support plate and the V-shaped groove seat, and the number of the waist holes is half of that of the limiting holes.
8. The concrete beam column node of claim 7, wherein the disc springs, the triangular prefabricated members and the V-shaped prefabricated positioning members are prefabricated members for facilitating rapid replacement of the energy-dissipating steel plates, the triangular prefabricated members and the V-shaped prefabricated positioning members.
9. The concrete beam-column joint of claim 1, wherein the disc spring is formed by stacking multiple layers of spring plates.
10. A method of operating a self-righting-bending cooperative concrete beam-column joint according to any one of claims 2 to 9, comprising: in the process, the triangular convex block moves along the inclined plane of the V-shaped groove seat in the V-shaped groove seat, and the fastening piece on the triangular convex block moves along the waist hole, so that the disc springs at two ends of the fastening piece compress and store energy, and further the deformed energy is absorbed for the second time; when the second reinforced concrete beam and the reinforced concrete upright post deform, the energy stored by the disc spring is automatically released, and the triangular lug falls into the bottommost part of the V-shaped groove seat along the inclined plane of the V-shaped groove seat under the elastic action of the self-resetting of the disc spring, so that the second reinforced concrete beam and the reinforced concrete upright post are restored to the initial position.

Description

Concrete beam column node with self-resetting-bending cooperative mechanism and working method Technical Field The invention belongs to the technical field of building structure engineering, and particularly relates to a self-resetting-bending cooperative mechanism concrete beam column node and a working method thereof. Background The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. In the field of building structural engineering, building industrialization and assembly are rapidly developing, and modern engineering has higher requirements on node performance, namely the node performance is required to have enough strength and energy consumption capacity to resist strong shock, multiple targets of rapid construction, function recovery after shock, easy replacement of damaged elements and the like are realized, and the node performance is an important direction of the current structural anti-shock research. The traditional cast-in-situ or common precast concrete beam column node mainly relies on concrete crushing and steel bar yielding to dissipate seismic energy, and the energy consumption mechanism is relatively single. The requirements can be met under small and medium earthquakes, but the severe cracking of concrete and the plastic deformation accumulation of the reinforcing steel bars are easy to occur under the action of strong earthquakes, so that the irrecoverable residual deformation is generated in the node area, the repair is difficult and the cost is high. The existing prefabricated node improves the construction efficiency, but the built-in energy-consuming elements are mostly fixedly connected with the main body structure, so that the built-in energy-consuming elements are often required to be replaced integrally after earthquake, the maintenance period is long, the economical efficiency is poor, and meanwhile, the energy-consuming efficiency is limited and the earthquake resistance is unstable. The defects of insufficient energy consumption capability, lack of self-resetting function, inconvenient repair and replacement after earthquake and the like are commonly existed. Disclosure of Invention Aiming at the problems, the invention provides a concrete beam column node with a self-resetting-bending cooperative mechanism and a working method thereof, which solve the problems of insufficient energy consumption, lack of self-resetting function and inconvenient repair and replacement after earthquake of the traditional node under the action of earthquake. In order to achieve the above object, the present invention is realized by the following technical scheme: the invention provides a concrete beam column node of a self-resetting-bending cooperative mechanism, which comprises a reinforced concrete column, a first reinforced concrete beam and a second reinforced concrete beam, wherein the first reinforced concrete beam is horizontally arranged on the reinforced concrete column, and the first reinforced concrete beam is connected with the second reinforced concrete beam through an energy consumption component to form the concrete beam column node; The energy consumption component comprises an energy consumption assembly, a triangular prefabricated component and a V-shaped prefabricated positioning component, wherein the V-shaped prefabricated positioning component is fixedly arranged at the end part of the first reinforced concrete beam, the triangular prefabricated component is fixedly arranged at the end part of the second reinforced concrete beam, a triangular lug of the triangular prefabricated component is matched with a V-shaped groove seat of the V-shaped prefabricated positioning component, fastening pieces are arranged in a limiting hole on the triangular prefabricated component and a waist hole on the V-shaped prefabricated positioning component, disc springs are arranged at two ends of each fastening piece, and the triangular prefabricated component is further connected with the reinforced concrete upright post through the energy consumption assembly. As a further implementation manner, the number of the energy consumption components is two, the energy consumption components are respectively arranged above and below the first reinforced concrete beam, and the energy consumption components are fixedly arranged on the reinforced concrete upright post. The energy consumption assembly comprises a first fixing seat and two energy consumption steel plates which are arranged in parallel, wherein a plurality of strip holes are formed in the energy consumption steel plates, the strip holes are arranged along the length direction of the first reinforced concrete beam, the first fixing seat is connected with the energy consumption steel plates through welding, the first fixing seat is fixedly connected with the reinforced concrete upright post through a connecting piece, and the energy consumption steel pl