某大底盘不对称双塔结构的抗震动力分析与设计实践

Multi-tower structure earthquake resistance mechanical analysis and design practices

依据某高层建筑大底盘双塔工程资料,利用各种结构程序,对整体模型和单塔模型进行了小震弹性分析,对整体模型进行了大震弹塑性静力分析,对受力复杂部位的楼板进行了应力分析。探讨了大底盘多塔高层结构模型的选取、结构模型振动特性和最终的设计措施。由于结构严重不对称,底盘处在拉、压、弯、扭等复杂受力状态下,底盘及其附近楼层受影响最大,是须加强的关键部位。

According to some material about one high building with big chassis and double towers, based on the computation result of some structure programs, model of multi-tower high building with big chassis are analyzed, vibration characteristic and the final design measure are discussed. Because of the dissymmetry of the structure model, the big chassis are under the complex stress active status including pulling, pressing, curving, turning and so on, the big chassis and nearby floor are the essential spots that should be strengthened.