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(中國建筑西南設(shè)計研究院有限公司, 成都 610042)
[摘要]成都某超高層建筑高度為177m,高寬比為7-7,結(jié)構(gòu)采用框架-剪力墻體系,局部設(shè)置鋼支撐,提高了結(jié)構(gòu)Y向剛度,改善了結(jié)構(gòu)層間位移角、剛重比等計算參數(shù);結(jié)構(gòu)存在框架柱高位轉(zhuǎn)換、大開洞樓板、穿層柱等特點,采用性能化設(shè)計方法進(jìn)行設(shè)計,并對結(jié)構(gòu)進(jìn)行了基于構(gòu)件拆除法的防連續(xù)倒塌分析。結(jié)果表明,結(jié)構(gòu)各階段的性能水準(zhǔn)均能滿足設(shè)定的性能目標(biāo),同時針對各階段分析結(jié)果提出了相應(yīng)的抗震加強(qiáng)措施。
[關(guān)鍵詞]框架-剪力墻結(jié)構(gòu); 轉(zhuǎn)換桁架; 性能化設(shè)計; 抗連續(xù)倒塌
中圖分類號:TU318文獻(xiàn)標(biāo)識碼:A文章編號:1002-848X(2018)21-0019-06
Design and analysis on a super high\|rise frame-shear wall structure with truss transfer
Wu Xiaobin, Peng Zhizhen, He Yunming
(China Southwest Architectural Design and Research Institute Co., Ltd., Chengdu 610042, China)
Abstract:The super high-rise building in Chengdu with building height of 177m and aspect ratio of 7-7 adopts structural system of frame shear-wall.The steel braces ware locally provided to increase the Y-direction stiffness of the structure and calculation parameters such as story drift angle and rigidity-gravity ratio ware improved. The performance-based design method was used considering characteristics of high level transfer in frame column, floors with big opening and the cross-layer columns. The progressive collapse resistance based on removing element method was carried out. The results show that the performance objectives of the structure can meet the predetermined levels at different stages. Specific strengthening measures were proposed according to the analysis result at different levels.
Keywords:frame shear-wall structure; truss transfer; performance-based design; progressive collapse
作者簡介:吳小賓,碩士,教授級高級工程師,Email:wumat@vip.sina.com。