龙光汕头世纪海岸结构设计分析

Design and analysis of Logan Shantou Century coast project

龙光汕头世纪海岸位于8度抗震设防地区,结构长宽比达到8.0,中震下墙体受拉严重,结构设计面临较大挑战,结合工程特点和计算分析结果,将抗震性能目标设为D级;采用中震等效弹性反应谱分析和中震弹塑性时程分析对比,验证了结构在中震下可以达到性能水准'4'的要求,并建议D级性能目标的建筑结构在中震下应采用弹塑性时程分析;在大震作用下,连梁重度损伤,结构位移角下降严重,为满足结构在大震下规范对位移角限值要求,建议连梁内设置抗剪型钢。

The Logan Shantou century coast is located in the 8 degree earthquake fortification area.The length to width ratio of the structure is up to 8.0.Under middle earthquake,the wall is pulled seriously,the structure design faces great challenge.Combined with engineering characteristics and calculation analysis results,the seismic performance target is set to grade D;The equivalent elastic response spectrum of middle earthquake and the elastic-plastic time history analysis of middle earthquake are compared.It is proved that the structure can meet the performance level'4'requirement under moderate earthquake,it is also suggested that elastoplastic analysis of building structures with D performance objectives should be performed during mid earthquake;Under the action of large earthquake,severe damage of coupling beam,the displacement angle of structure is serious,in order to meet the requirement of the standard of the displacement angle under the large earthquake,it is suggested that shear steel should be installed in the coupling beam.