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（1 西安建筑科技大學(xué)土木工程學(xué)院， 西安 710055；2 柳州東方工程橡膠制品有限公司， 柳州 545005）

［摘要］超高層框架-核心筒結(jié)構(gòu)通常設(shè)置伸臂桁架以提高結(jié)構(gòu)剛度并滿足層間位移角等規(guī)范控制指標(biāo)。采用PERFORM-3D軟件建立了帶有普通伸臂的剛性方案模型和帶有黏滯阻尼伸臂的阻尼方案模型，對(duì)比了兩種方案在多遇、設(shè)防、罕遇地震作用下的層間位移角及結(jié)構(gòu)受力情況，比較了罕遇地震作用下兩種方案的殘余變形及結(jié)構(gòu)的損傷情況，最后結(jié)合構(gòu)件的耗能對(duì)結(jié)構(gòu)損傷進(jìn)行量化分析。分析結(jié)果表明：阻尼方案改善了剛性方案結(jié)構(gòu)剛度突變的問(wèn)題，結(jié)構(gòu)的抗側(cè)剛度分布更為均勻，同時(shí)有效地降低了結(jié)構(gòu)內(nèi)力；與剛性方案相比，阻尼方案結(jié)構(gòu)頂部殘余變形顯著減小，核心筒以及外框架的損傷情況得到改善。在地震作用下，黏滯阻尼伸臂充當(dāng)結(jié)構(gòu)第一道抗震防線，提高了結(jié)構(gòu)的抗震韌性，有較好的應(yīng)用前景。

［關(guān)鍵詞］黏滯阻尼伸臂；伸臂桁架；超高層框架-核心筒結(jié)構(gòu)；抗震性能

中圖分類號(hào)：TU352-1,  TU355文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2021)03-0083-07

Study on the influence of viscous damped outrigger on the seismic performance of super high-rise frame-core tube structure

XUE Jianyang1, ZHANG Chongxin1, SUI Yan1,2, YANG Renmeng2, XIONG Gaobo2, LUO Zheng1

（1 School of Civil Engineering, Xi′an University of Architecture & Technology, Xi′an 710055, China;2 Liuzhou Orient Engineering Rubber Products Co., Ltd., Liuzhou 545005， China）

Abstract:The super high-rise frame-core tube structure is usually provided with outrigger truss to improve the structural rigidity and meet the specification control indexes such as the inter-story drift angle. One rigid scheme model with rigid outriggers and the other damping scheme model with viscous damped outriggers were established by PERFORM-3D software. The inter-story drift angle and structural internal force of the two schemes under the action of frequent, basic and rare earthquakes were compared. The residual deformation and structural damage of the two schemes under the action of rare earthquakes were compared. Finally, the structural damage was quantitatively analyzed based on the energy dissipation of the components. The analysis results show that the damping scheme eliminates the abruptness of structural stiffness in rigid scheme, it makes the lateral stiffness distribution more uniform and effectively  reduces the structural internal force. Compared with the rigid scheme, the residual deformation at the top of the damping scheme is significantly reduced, and the damage of the core tube and frame is minimized. The viscous damped outriggers act as the first seismic defense line of the structure under earthquakes, which improves the seismic resilience of structure and has a good application prospect.

Keywords:viscous damped outrigger;outrigger truss;super high-rise frame-core structure;seismic performance

*陜西省科技創(chuàng)新團(tuán)隊(duì)項(xiàng)目（2019TD-029），柳州歐維姆機(jī)械股份有限公司博士后科研工作站科研項(xiàng)目（201908）。