Bending-shearing separation control type fabricated metal damper

A metal damper, separate control technology, applied in building types, protective buildings/shelters, building components, etc., can solve the problem of low-cycle fatigue performance of dampers, out-of-plane buckling of energy-consuming panels, and large cumulative plastic deformation. and other problems, to achieve the effect of flexible design, reduced repair cost, and stable mechanical properties

Active Publication Date: 2017-12-15
INST OF ENG MECHANICS CHINA EARTHQUAKE ADMINISTRATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional metal mild steel dampers use in-plane deformation to dissipate energy, mainly shear deformation, with high rigidity and strong energy dissipation capacity
However, the energy dissipation plate is prone to out-of-plane buckling, which is difficult to control; the connection form of the energy dissipation section steel plate is mostly welding, which affects the low cycle fatigue performance of the damper on the one hand, and on the other hand, it is difficult to quickly replace it after the earthquake
In particular, the existing mild steel damper first enters yield under the control of normal stress at the four corners of the energy dissipation plate, and the cumulative plastic deformation is large. Tests show that this is the stress point where low cycle fatigue fracture first occurs for this type of damper

Method used

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  • Bending-shearing separation control type fabricated metal damper
  • Bending-shearing separation control type fabricated metal damper
  • Bending-shearing separation control type fabricated metal damper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] figure 1 It is a schematic diagram of the structure of this embodiment. This embodiment is composed of metal energy dissipating sheet 1, L-shaped connection support 2, integrated anti-buckling connection dual-function support 3, replaceable nut fastening plate 4, threaded hole 5, pre-compression fastening bolt 6, friction Type high-strength connecting bolt 7, backing plate 8, pressure-bearing bolt 9, connecting embedded parts 10, horizontal stiffening rib 11, longitudinal stiffening rib 12, bending-shear separation control type assembled metal damper line type 13, smooth thickness weakening Section 14, small slope edge 15, flexible filling material 16, embedded anchor steel bar 17. When assembling, the metal energy dissipating sheet 1, the backing plate 8, and the integrated anti-buckling connection dual-function support 3 are positioned and assembled according to the position of the bolt hole, and fixed by the pre-compressed fastening bolt 6. Connect the two ends of th...

Embodiment 2

[0040] Picture 9 It is a sectional view of the structure of this embodiment. Two metal energy dissipating pieces 1 are connected in parallel, the anti-buckling partition 18 and the partition 19 separate the two metal energy dissipation pieces 1, and the anti-buckling partition 18 and the integrated anti-buckling connection dual-function support 3 A backing plate 8 is provided at the pressing and fastening bolt 6 so that each energy dissipation piece does not affect each other when the damper works. The rest of the structure is the same as the first embodiment.

[0041] Picture 10 It is a schematic diagram of the anti-buckling partition 18 of this embodiment. Corresponding bolt holes are opened, and the two L-shaped connecting supports 2 are connected by friction-type high-strength connecting bolts 7, and the contact surface with the energy dissipating section of the metal energy dissipating sheet 1 has a thickness The weakened smooth section 14 prevents friction between it and ...

Embodiment 3

[0044] Picture 12 It is a schematic diagram of the structure of this embodiment. The damper is placed between the layers of the frame structure, and the displacement between the layers during the earthquake is used to drive the damper to work and dissipate energy. The upper end of the damper is connected with the upper frame beam, the lower end is connected with the concrete connecting buttress, and the concrete connecting buttress has Sufficient bearing capacity and initial stiffness to avoid exiting work before the damper yields. The dampers can be placed in parallel on the connecting buttresses. The other structure is the same as the first embodiment.

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PUM

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Abstract

The invention relates to a damper utilizing a yielding deformation mechanism in the soft steel surface to dissipate vibration energy, and the damper is used for energy dissipation and damping of house buildings. The bending-shearing separation control type fabricated metal damper can serve as a partition element of the building function to be mounted in a structure and does not bear a vertical load. When the damper is subjected to the effect of a wind load or a seismic load, the elastic-plastic hysteretic behavior produced by deformation of metal energy dissipation sheets can dissipate the energy input by the wind load or the seismic load, and thus main components of the structure are protected. The metal energy dissipation sheets adopt bending-shearing separation control, the cumulative plastic deformation of the energy dissipation sheets is greatly reduced, and the low cycle fatigue performance of the damper is improved.

Description

(1) Technical field [0001] The invention belongs to the technical field of structural engineering seismic resistance, and relates to a damper for dissipating seismic energy by utilizing the yield deformation mechanism in a metal plane. (2) Background technology [0002] The seismic activity in recent years has caused severe damage to the engineering structure, and even caused serious casualties. A series of earthquakes in Wenchuan, Yushu, Lushan, Ludian and other earthquakes indicate that my country’s urban buildings are still facing serious earthquake threats. With the release of the new version of the seismic zoning map, the area of ​​fortified areas of 7 degrees and above in my country has increased to 58% of the national area. 82% of provincial capital cities and 57% of prefecture-level cities are in fortified areas of 7 degrees and above. How to efficiently and economically enhance the seismic capacity of building structures is one of the important topics of current earthqua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04H9/02E04B1/98
CPCE04H9/021
Inventor 王涛朱柏洁滕睿张令心
Owner INST OF ENG MECHANICS CHINA EARTHQUAKE ADMINISTRATION
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