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（1 蘇州科技大學(xué)土木工程學(xué)院， 蘇州 215011; 2 上海動(dòng)研建筑科技發(fā)展有限公司， 上海 200093）

［摘要］以高烈度區(qū)某框架結(jié)構(gòu)教學(xué)樓為背景，采用鉛黏彈性阻尼器進(jìn)行消能減震設(shè)計(jì)。應(yīng)用PERFORM 3D有限元分析軟件對(duì)結(jié)構(gòu)進(jìn)行罕遇地震下的彈塑性時(shí)程分析，對(duì)比大震下減震結(jié)構(gòu)與原結(jié)構(gòu)的層間位移角等指標(biāo)，評(píng)價(jià)梁柱的性能狀態(tài)以及減震設(shè)備的耗能情況。結(jié)果表明，應(yīng)用鉛黏彈性阻尼器可以提高框架結(jié)構(gòu)的抗震性能，控制結(jié)構(gòu)的塑性變形，從而保證結(jié)構(gòu)在罕遇地震下的安全。此外，通過計(jì)算常規(guī)黏彈性阻尼器在平面外受力情況，證明其容易導(dǎo)致阻尼器面外受損而影響阻尼器耗能性能，因此提出了一種特殊構(gòu)造措施以防止阻尼器在平面外發(fā)生破壞。

［關(guān)鍵詞］框架結(jié)構(gòu)； 鉛黏彈性阻尼器； 時(shí)程分析； 罕遇地震

中圖分類號(hào)：TU352-1文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：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