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上海国际设计中心建筑造型独特,采用不等高双塔连体结构。其平面和立面规则性均超限,不满足现行抗震设计规范的要求。主、副塔楼的高度和刚度相差显著,结构的扭转反应明显。采用NOSACAD有限元程序建立整体结构分析模型,对结构进行7度罕遇烈度下的弹塑性时程分析。计算结果表明,小震情况下,结构构件未出现损坏;大震情况下,结构最大层间位移角为1/112,满足规范要求。筒体构件损坏顺序和分布较为合理,能在一定程度上耗散地震输入能量。
Shanghai International Design Center unique architectural style, not using the same double tower Siamese structure. Its plane and elevation regularities are beyond the limits, does not meet the requirements of the current seismic design specifications. The difference between the height and the stiffness of the main tower and the auxiliary tower is remarkable, and the torsional reaction of the structure is obvious. NOSACAD finite element program was used to establish the overall structure analysis model, and the structure was elasto-elastically time-history analyzed under the severity of 7 degrees. The results show that under the condition of minor earthquakes, there is no damage to the structural members. In the case of major earthquakes, the maximum displacement angle of the structure is 1/112, which meets the requirements of the code. The damage order and distribution of the cylinder components are reasonable, which can dissipate the earthquake input energy to a certain extent.