（1 苏州科技大学土木工程学院， 苏州 215011; 2 上海动研建筑科技发展有限公司， 上海 200093）

［摘要］以高烈度区某框架结构教学楼为背景，采用铅黏弹性阻尼器进行消能减震设计。应用PERFORM 3D有限元分析软件对结构进行罕遇地震下的弹塑性时程分析，对比大震下减震结构与原结构的层间位移角等指标，评价梁柱的性能状态以及减震设备的耗能情况。结果表明，应用铅黏弹性阻尼器可以提高框架结构的抗震性能，控制结构的塑性变形，从而保证结构在罕遇地震下的安全。此外，通过计算常规黏弹性阻尼器在平面外受力情况，证明其容易导致阻尼器面外受损而影响阻尼器耗能性能，因此提出了一种特殊构造措施以防止阻尼器在平面外发生破坏。

［关键词］框架结构； 铅黏弹性阻尼器； 时程分析； 罕遇地震

中图分类号：TU352-1文献标识码：A文章编号：1002-848X(2020)06-0099-04

Application of a special composite lead viscoelastic damper in frame structure in high seismic fortification intensity area

Hu Qingsheng1, Chang Jun1, Liu Zhuo2

（1 School of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, China;2 Shanghai Dynamic-Lab Architectural Technology Co., Ltd., Shanghai 200093, China）

Abstract:Based on a teaching building of frame structure in high seismic fortification intensity area, the lead viscoelastic damper was used for energy-dissipated design. The elastic-plastic time-history analysis of the structure under the rare earthquake was carried out by means of the finite element analysis software of PERFORM 3D. The performance state of the beam column and the energy consumption of the damping equipment were evaluated by comparing the inter-layer displacement angles of the damping structure and the original structure under the rare earthquake. The results show that the lead viscoelastic damper can improve the seismic performance of the frame structure and control the plastic deformation of the structure, so as to ensure the safety of the structure under the rare earthquake. In addition, by calculating the out-of-plane stress of the conventional viscoelastic damper, it was proved that it is easy to cause out-of-plane damage of the damper and affect the energy dissipation performance of the damper. Therefore, a special construction measure was proposed to prevent the damper from out-of-plane damage.

Keywords:frame structure; lead viscoelastic damper; time-history analysis; rare earthquake