- 摘 要
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（1 中國建筑西南設計研究院有限公司， 成都 610042； 2 中建科工集團有限公司， 深圳 518000）
［摘要］對一個位于9度區(qū)，高度為76.8m，采用鋼框架-中心支撐體系的醫(yī)院建筑進行了消能減震設計。對比分析了多遇地震與罕遇地震作用下該醫(yī)院減震結構與非減震結構的地震響應。分析結果表明，地震作用下，設置的黏滯阻尼器滯回曲線飽滿，耗散了大量地震輸入結構的能量，減小了結構樓層剪力、層間位移角等參數(shù)的數(shù)值，改善了結構的損傷，提高了結構的抗震性能與安全儲備，達到了預期的抗震性能目標。對消能子結構的節(jié)點區(qū)域進行了詳細的有限元分析，結果表明，節(jié)點構造及承載力等滿足要求。
［關鍵詞］消能減震； 鋼框架中心支撐； 黏滯阻尼器； 性能化設計； 消能子結構
中圖分類號：TU318， TU352文獻標識碼：A文章編號：1002-848X(2020)19-0107-05
Energy dissipation analysis of a high-rise structure with steel frame-central brace in the 9-degree zone
WU Xiaobin1, PENG Zhizhen1, XU Kun2, LI Changhong1, ZHANG Xudong1, WANG Jianhu1, WU Changgen2
（1 China Southwest Architectural Design and Research Institute Co., Ltd., Chengdu 610042, China； 2 China Construction Science and Industry Corporation Ltd., Shenzhen 518000, China）
Abstract:The energy dissipation design of a hospital building with a height of 76.8 meters in the 9-degree zone, which adopts steel frame-central brace, was carried out. The seismic responses of the shock-absorbing structure and non-shock-absorbing structure of the hospital under frequent earthquakes and rare earthquakes was compared and analyzed. The analysis results show that under the earthquake, the hysteresis curve of the set viscous damper is full and the set viscous damper dissipates a large amount of energy input to the structure by earthquake, which reduces the numerical value of the parameters such as the structural floor shear and interlayer displacement angle, improves structural damage, and improve the seismic performance and safety reserve of the structure, and achieve the expected seismic performance target. A detailed finite element analysis was carried out on the node area of the energy dissipation substructure, and the results show that the node structure and bearing capacity meet the requirements.
Keywords:nergy dissipation； steel frame-central brace； viscous damper； performance-based design; energy dissipation substructure
作者簡介：吳小賓，碩士，教授級高級工程師，一級注冊結構工程師，Email:wumat@vip.sina.com。
