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（1 山東同圓設(shè)計集團有限公司， 濟南 250001； 2 天津海王星海上工程技術(shù)股份有限公司， 天津 300384）
［摘要］項目為鋼結(jié)構(gòu)外殼與混凝土內(nèi)框架組成的混合結(jié)構(gòu)，結(jié)構(gòu)整體形狀呈梭形，鋼結(jié)構(gòu)部分類似魚骨。采用YJK，MIDAS/Gen軟件對結(jié)構(gòu)進行整體計算和彈性時程分析，采用ANSYS軟件對重要節(jié)點進行有限元分析。結(jié)果表明，混合結(jié)構(gòu)阻尼比應(yīng)取計算與規(guī)范的較小值；整體分析應(yīng)考慮樓梯的作用，樓梯對周期、阻尼比、位移及與樓梯直接相連的柱內(nèi)力均有影響；通過概念設(shè)計對關(guān)鍵節(jié)點進行加強能夠滿足設(shè)計要求。
［關(guān)鍵詞］混合結(jié)構(gòu)； 節(jié)點強度； 有限元分析； 混合結(jié)構(gòu)阻尼比
中圖分類號：TU318文獻標(biāo)識碼：A文章編號：1002-848X(2016)22-0064-04
Design and analysis on a shuttle-shaped mixed structure
Yang Xiaodong1， Wei Qiang1， Jiang Shilin1， Guo Xiaoliang2
（1 Shandong Tongyuan Design Group Co., Ltd., Jinan 250001, China; 2 Neptune Offshore Engineering Development Co., Ltd., Tianjin 300384， China）
Abstract:The project is a mixed structure composed of steel structure shell and inside concrete frame. The overall shape of the structure is shuttle-shaped, and steel structure part is similar to shape of fish bones. YJK and MIDAS/Gen software were used for overall structure calculation and elastic time-history analysis on the structure, and ANSYS software was adopted to conduct finite element analysis on the important joints. The results show that the damping ratio of mixed structure should adopt the smaller value of calculation value or specification value. Overall analysis should consider the role of the stairs, and the stairs have impacts on the period, damping ratio, displacement, and internal force of column attached directly to the stairs. It can meet the design requirements to strengthen the key joints through the concept design.
Keywords:mixed structure； joint strength； finite element analysis； damping ratio of mixed structure
作者簡介:楊曉東，碩士，高級工程師，Email:tystru1981@163.com。
