弯剪复合分级屈服阻尼器设计与力学分析  

Design and Mechanical Analysis of Bending-shear Composite Graded Yield Damper

作　　者：杨明飞[1] 靳杰 陈宜网 YANG Mingfei;JIN Jie;CHEN Yiwang(School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,China;Anhui Shengwo Construction Engineering Co Ltd,Hefei 230031,China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001 [2]安徽圣沃建设工程有限公司,安徽合肥230031

出　　处：《土木工程与管理学报》2022年第5期34-41,共8页Journal of Civil Engineering and Management

基　　金：安徽省高校自然基金(KJ2016A209);安徽理工大学人才引进基金(ZY044)。

摘　　要：为提升弧形钢板阻尼器的耗能能力,调整阻尼器的刚度,提出一种弯剪复合分级屈服阻尼器。借助有限元分析软件ANSYS建立21组模型试件,通过对数值结果的统计分析,总结复合阻尼器中软钢棒直径、弧形钢板半径及宽度和厚度等参数对阻尼器耗能性能的影响规律,并给出了复合阻尼器各项设计参数的建议取值,同时结合对单体耗能构件的数值分析,提出了弯剪复合分级屈服阻尼器的三线性恢复力模型并对其进行验证。研究结果表明:弯剪复合分级屈服阻尼器的初始刚度随软钢棒直径的增大而上升,其耗能能力随软钢棒直径、弧形钢板半径以及厚度的增大而增加,复合阻尼器的二级屈服位移随弧形钢板半径和厚度的增大而减小;所提恢复力模型最大相对误差不超过8%,可准确描述该复合阻尼器的力学性能。In order to improve the energy dissipation capacity and adjust the stiffness of the curved steel plate damper, a bending-shear composite graded yield damper was proposed. By means of finite element analysis software ANSYS to establish a set of models 21 specimen, by means of the numerical results of statistical analysis, summary of mild steel in composite damper steel bar diameter, arc radius, the width and thickness and other parameters on the performance of the damper, and gives the compound damper all the recommended values of design parameters, and combined with the numerical analysis of the monomer wall-beam, a trilinear restoring force model for bending-shear compound graded yield damper is proposed and verified. The results show that the initial stiffness of bending-shear composite graded yield damper increases with the increase of the diameter of mild steel bar, the energy dissipation capacity increases with the increase of the diameter of mild steel bar, the radius and the thickness of the arc steel plate, and the second-order yield displacement of the composite damper decreases with the increase of the radius and thickness of the arc steel plate. The maximum relative error of the restoring force model is not more than 8%, which can accurately describe the mechanical properties of the composite damper.

关 键 词：弯剪复合 分级屈服 耗能能力 初始刚度 恢复力模型 

分 类 号：TU352.1[建筑科学—结构工程]