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(1 蘭州理工大學(xué)甘肅省土木工程防災(zāi)減災(zāi)重點(diǎn)實(shí)驗(yàn)室，  蘭州 730050; 2 蘭州理工大學(xué)西部土木工程防災(zāi)減災(zāi)教育部工程研究中心，  蘭州 730050; 3 中鐵第一勘察設(shè)計(jì)院集團(tuán)有限公司， 西安 710043)

［摘要］現(xiàn)有用于黏滯阻尼器模擬的模型只能反映其正常工作狀態(tài)，因此大震或特大震下，如黏滯阻尼器達(dá)到其極限狀態(tài)則不能使用。針對(duì)這一問(wèn)題，使用C++語(yǔ)言對(duì)黏滯阻尼器的Maxwell模型進(jìn)行二次開(kāi)發(fā)得到了可考慮位移極限狀態(tài)的阻尼器Maxwell01模型、可考慮力極限狀態(tài)的阻尼器Maxwell02模型，其中Maxwell02模型既可表示活塞咬邊受拉極限狀態(tài)又可表示驅(qū)動(dòng)支撐受壓極限狀態(tài)，然后將Maxwell01，Maxwell02模型集成到OpenSees中。選擇一個(gè)6層鋼框架結(jié)構(gòu)，分別按無(wú)阻尼器、安裝黏滯阻尼器但未考慮極限狀態(tài)、安裝黏滯阻尼器且考慮活塞咬邊受拉極限狀態(tài)、安裝黏滯阻尼器且考慮驅(qū)動(dòng)支撐受壓極限狀態(tài)4種工況進(jìn)行罕遇地震水準(zhǔn)下的彈塑性時(shí)程分析。分析結(jié)果對(duì)比表明，考慮力極限狀態(tài)，黏滯阻尼器的耗能能力會(huì)下降，因此大震下若不考慮極限狀態(tài)，會(huì)高估黏滯阻尼器減震性能。

［關(guān)鍵詞］黏滯阻尼器； 極限狀態(tài)； 減震性能

中圖分類號(hào)：TU352-1文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)08-0037-06

Antiseismic performance analysis of damping structure considering limit state of viscous damper under large earthquake

Han Jianping1,2, Zhang Zhenlong3

(1 Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China;  2  Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China;  3 China Railway First Survey and Design Institute Group Company Limited, Xi′an 710043, China)

Abstract:The existed models to simulate viscous damper only can represent its normal working condition so that they are not useable if the viscous damper reaches its limit state under large or extremely large earthquakes. To solve this problem, the Maxwell model for viscous damper was developed by C ++ to obtain the modified Maxwell01 model to account for the displacement limit state of viscous damper and the modified Maxwell02 model to account for the force limit states of  viscous damper. The Maxwell02 model can be used to represent  the tension limit state of the piston bite and the compression limit state of the drive support. Then the Maxwell01 and Maxwell02 model was integrated into OpenSees. Furthermore, a 6-story steel frame structure was chosen as case study. Four cases of the structure without damper, with viscous dampers without considering the limit state of damper, with viscous dampers considering the tension limit state of the piston bite, and with viscous dampers considering the compression limit state of the  driver supports, were analyzed under rarely-occurred level earthquake, respectively. The comparison of the analytical results shows that after accounting for the limit states of viscous dampers, the energy-dissipation capacity of viscous dampers will decrease. Thus if the limit states are not considered under the large earthquake, damping performance of viscous damper will be overestimated.

Keywords:viscous damper; limit state; damping performance

*國(guó)家自然科學(xué)基金項(xiàng)目（51578273），教育部長(zhǎng)江學(xué)者和創(chuàng)新團(tuán)隊(duì)發(fā)展計(jì)劃（IRT_17R51）。

作者簡(jiǎn)介：韓建平，博士，教授，博士生導(dǎo)師，Email：jphan@lut.edu.cn。