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弘毅中心办公塔楼为大跨复杂高层结构,筒体(剪力墙)偏置在一侧,采用方钢管混凝土柱+H型钢梁+钢筋混凝土筒体结构体系。该结构具有以下特点:一是框架柱数量较少,属于疏柱框架;二是筒体偏置,扭转效应较显著;三是筒外办公区域钢梁跨度较大,约为19m。针对筒体偏置、疏柱框架及大跨钢梁等结构特点,利用MIDAS,ETABS软件进行了小震计算与复核,并对结构的疏柱框架、偏心筒、大跨梁板体系做了专项分析;采用LS-DYNA软件对结构进行了罕震作用下的弹塑性时程分析。结果表明,小震作用下结构主要抗侧力构件处于弹性工作状态;大震作用下框架体系基本完好,筒体剪力墙出现轻微程度损伤;结构变形满足规范要求,结构体系合理可行。
Hony Center office tower is a large-span complex high-rise structure, the cylinder (shear wall) offset in one side, the use of square steel tube concrete column + H beam + reinforced concrete structure system. The structure has the following characteristics: First, the number of frame columns less, belonging to the column frame; Second, the cylinder bias, torsional effect is more significant; Third, office tube outside the cylinder span larger, about 19m. Aiming at the structural characteristics of cylinder bias, sparse column frame and long-span steel beam, the small earthquakes were calculated and verified by using MIDAS and ETABS software. The system of the sparse column, eccentric cylinder and large span plate was specially designed The elastic-plastic time-history analysis of the structure under the action of rarefaction was carried out by LS-DYNA software. The results show that under the action of minor earthquakes, the main anti-side members of the structure are in elastic working condition; the frame system is basically intact under the action of large earthquakes and slight damage occurs on the shearing wall of the cylinder; the structural deformation meets the requirements of the code and the structural system is reasonable and feasible.