上海环球金融中心模型结构振动台试验与理论分析的对比研究

SHAKE-TABLE TEST AND THEORETICAL ANALYSIS FOR SHANGHAI WORLD FINANCIAL CENTER SCALE MODEL

建设中的上海环球金融中心是目前世界上主体结构最高的建筑物。对该建筑进行了1∶50比例的微粒混凝土整体模型的地震模拟振动台试验。采用自编的高层钢筋混凝土结构弹塑性时程分析程序(TBNLDA)对振动台模型结构进行了弹塑性时程分析,并和试验数据进行了对比分析。研究了模型结构的动力特性,以及在7度多遇、7度基本、7度罕遇和8度罕遇地震烈度作用下的结构位移反应,研究了模型结构的地震剪力系数,以及模型结构的破坏型式。试验与理论分析取得了基本一致的结果,起到了相互验证的作用并为该建筑物原型结构的弹塑性时程分析提供了参考。初步研究结果表明该结构能够满足小震不坏、中震可修、大震不倒的抗震设防要求。

The proposed Shanghai World Financial Center is possibly the tallest building in the world when completed. A 1 ： 50 scale model made of micro-concrete is tested on the shaking table. A nonlinear time-history analysis code for tall reinforced concrete structures is developed （TBNLDA）. Using the code a nonlinear time-history analysis for the shaking table test model is carried out, and the results are compared with test data. The model responses of displacement and dynamic behavior have been measured. The ratio of sheafing force to weight and the failure mechanism have been discussed as well. The result obtained by theoretical analysis is identical with the test result. The results show that the structure can meet the requirements of no-damage under light earthquake, repairable under medium earthquake, and no-collapse under strong earthquake.