Column base joint with additional bending type damper capable of being replaced after earthquake

A column foot joint and damper technology, applied in the seismic field of structural engineering, can solve problems such as difficult maintenance after earthquake, and achieve the effects of improving seismic performance, easy replacement, and clear force transmission

Active Publication Date: 2021-08-31
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a post-earthquake replaceable post-earthquake column foot

Method used

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  • Column base joint with additional bending type damper capable of being replaced after earthquake
  • Column base joint with additional bending type damper capable of being replaced after earthquake
  • Column base joint with additional bending type damper capable of being replaced after earthquake

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Experimental program
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Effect test

Embodiment 1

[0038] see Figure 1 to Figure 5 , is a column base node of a curved damper 7 that can be replaced after an additional earthquake, including upper column 1 and lower column 2 facing up and down, and bowls located at the axial centers of upper column 1 and lower column 2 and facing up and down shaped support 4, and the curved damper 7 surrounding the bowl-shaped support 4.

[0039] Specifically, the upper column 1 and the lower column 2 are both reinforced concrete square columns, and steel end plates 3 are respectively fixed on the cylindrical surfaces facing each other, and the centers of the two steel end plates 3 are respectively connected to steel bowl-shaped supports 4. Among them, the end surface of the bowl-shaped support 4 of the upper column 1 has an arc-shaped protrusion 5, and the end surface of the bowl-shaped support 4 of the lower column 2 has an arc-shaped groove 6, an arc-shaped protrusion 5 and an arc-shaped groove 6 to form a convex-concave arc-shaped matchi...

Embodiment 2

[0047] Such as Figure 6 As shown, the main difference between embodiment 2 and embodiment 1 is that the structure of the bending damper 7 is different. Specifically, each group of bending damper 7 includes an intermediate steel pipe section 701, which are respectively symmetrically arranged on two sides of the intermediate steel pipe section 701. The two side upper steel pipe sections 709 and the two side lower steel pipe sections 710, the two side upper steel pipe sections 709 and the two side lower steel pipe sections 710 are arranged correspondingly up and down on the same side, and the sides of the same side A connecting steel pipe section 703 is movably inserted between the upper steel pipe section 709 and the side lower steel pipe section 710, and a steel stopper 704 is provided on the connecting steel pipe section 703 to limit the axial position of the connecting steel pipe section 703. The middle steel pipe section 701 and the A group of curved plates 705 are respecti...

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Abstract

The invention relates to a column base joint with an additional bending type damper capable of being replaced after an earthquake, and belongs to the technical field of structural engineering earthquake resistance. The column base joint with the additional bending type damper capable of being replaced after the earthquake comprises an upper column, a lower column, a bowl-shaped support positioned in the axial center of the upper column and the lower column, and the bending type damper arranged around the bowl-shaped support; the end surfaces of the upper and lower bowl-shaped supports are respectively provided with an arc-shaped bulge and an arc-shaped groove, and an arc-shaped rubber pad and a steel wire mesh are additionally arranged between the arc-shaped bulge and the arc-shaped groove; the bending type damper has various structural types, bending plates are connected between middle steel pipe sections and side steel pipe sections, the middle steel pipe sections or the side steel pipe sections are divided into an upper steel pipe section and a lower steel pipe section, and connecting steel pipe sections are movably connected between the upper middle steel pipe section and the lower middle steel pipe section or between the upper side steel pipe section and the lower side steel pipe section in an inserted mode to prevent deviation. A steel stop block is arranged on the connecting steel pipe section for limiting. According to the column base joint with the additional bending type damper capable of being replaced after the earthquake, force transmission paths are distributed clearly, the bowl-shaped supports bear axial force and shearing force, rotation in all directions is achieved, the bending type dampers can dissipate earthquake energy, anti-seismic capacity is improved, and replacement and maintenance after the earthquake are convenient.

Description

technical field [0001] The invention belongs to the field of anti-seismic technology of structural engineering, and relates to a column base node of a curved damper that can be replaced after an additional earthquake. Background technique [0002] At present, performance-based seismic design has become the mainstream of seismic design. How to make the whole building, even the whole city and even the whole society recover after an earthquake has attracted close attention and extensive discussions in the field of earthquake engineering in recent years. How to design a structure that does not cause damage or can only be quickly repaired during an earthquake will become one of the important research directions for sustainable seismic engineering. By "weakening" certain parts of the structural system and realizing concentrated energy dissipation in these parts, the damage of the structure under the action of the earthquake can be effectively controlled, and the damaged parts can ...

Claims

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Application Information

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IPC IPC(8): E04H9/02E04B1/98
CPCE04H9/021E04H9/025E04B1/98
Inventor 白久林贺晶陈辉明金双双杨经纬胡少伟
Owner CHONGQING UNIV
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