Design method of metal damper

A metal damper and design method technology, applied in building components, building types, earthquake resistance, etc., can solve the problems of weak deformation ability, unsatisfactory damping effect, and low utilization rate of damper materials.

Active Publication Date: 2017-01-25
中交柏嘉工程技术研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a design method of a metal damper, which can realize the precise design of the shape curve and stiffness of the da

Method used

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  • Design method of metal damper
  • Design method of metal damper
  • Design method of metal damper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0051] Implementation Mode 1: Basic shape and design method of asymmetric metal damper

[0052] An asymmetric metal damper (such as figure 1 ), consisting of a C-shaped metal plate whose centerline is taken from an asymmetrical elliptical arc. The equal rigidity design method is used to make the maximum normal stress of each section equal and reach the yield stress of the material. When the damper undergoes large deformation, each section can enter the plastic working state at the same time, producing a damping effect and achieving the purpose of energy consumption. The equal rigidity design is adopted to ensure the uniformity of the overall deformation when the damper is compressed or stretched, and avoid local accumulation of strain, which will lead to component damage and failure.

[0053] During the design process of the damper, the center line parameters and the arc segment taken can be determined according to the installation requirements, and the remaining technical pa...

Embodiment approach 2

[0073] Implementation Mode 2: Basic Shape and Design Method of Symmetrical Metal Damper

[0074] A symmetrical metal damper (such as figure 2 ), whose centerline is taken from a symmetrical elliptical arc. Its design method is consistent with Embodiment 1, and it is a special application example of the asymmetric metal damper described in Embodiment 1.

[0075] Symmetrical and asymmetrical dampers have certain differences in external dimensions, damping characteristic curves and other characteristics, and can be selected and designed according to specific application requirements.

Embodiment approach 3

[0076] Implementation mode three: E-type equal rigid arm metal damper

[0077] Connect two symmetrical (or asymmetrical) metal dampers in series to form an E-shaped structure, such as image 3 , Figure 4 shown. The E-type damper can increase the damping displacement to twice that of the single damper when the damping force remains unchanged. Its design calculation method is similar to that of the single damper. According to different installation methods, it can be divided into Intermediate mounting holes (such as Figure 4 ) and without intermediate mounting holes (such as image 3 ) in two forms.

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Abstract

The invention belongs to the technical field of civil engineering, building and structural engineering shock absorption, and particularly relates to a design method of a metal damper used in shock absorption and energy dissipation structures such as a shock absorption and isolation device, a support seat and an anti-collision device. The damper consists of a crescent metal plate and connecting lug plates at two ends, and is of an integrally formed structure, wherein the crescent metal plate is a core energy dissipation part of the damper; a center line is an elliptic arc section, and can be of a symmetrical or asymmetrical structure; the cross section adopts the variable width design, and is determined by an equal-rigidity calculation method; the form that the middle is wide and two ends are narrow is used. During the design, firstly, the parameters of the center line of the damper is determined according to the required installing size; secondly, the corresponding relationship of the cross section width and the central angle of the damper is obtained by using a cross section width calculation formula; then, the primary rigidity and the limited elastic deformation are calculated according to the formula; finally, the size of the damper for connecting the lug plates is determined according to the size of required fixing screw bolts or pins. The design method has the advantages that the equal-rigidity design method is used, so that when the damper deforms, all cross sections synchronously enter a plastic stage; great deformation can be realized; meanwhile, the damping ratio can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of shock absorption in civil engineering, construction, and structural engineering, and in particular relates to a design method for a metal damper used in shock-absorbing and energy-dissipating structures such as shock-absorbing and isolating devices, supports, and anti-collision devices. Background technique [0002] my country is a country with frequent earthquakes. Today, the development of highway bridges is gradually becoming large-scale, and the impact of earthquakes on structural safety has received more and more attention. In order to improve the ability of structures to resist earthquakes and sudden external force damage, various Various forms of anti-shock isolation and anti-collision devices have gradually been widely used. Metal dampers, as a kind of stable and economical energy-dissipating components, have gradually been applied in the seismic design of various projects in recent years. However...

Claims

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Application Information

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IPC IPC(8): E04H9/02E04B1/98
CPCE04H9/021
Inventor 葛胜锦王伟于成云赵毛毛吕卫波苏根姜学良袁锦浪孙伟李侠
Owner 中交柏嘉工程技术研究院有限公司
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