上海浦东某超限高层建筑结构抗震设计与分析

Structural seismic design and analysis of a limited-beyond high-rise building in Pudong, Shanghai

本文重点介绍上海浦东地区某66.3m的首层带支撑的钢框架超限高层结构抗震分析与设计。为满足建筑功能和体型需求,导致该楼存在扭转不规则、楼板不连续、尺寸突变和局部穿层柱等结构不规则项,设计使用YJK和Midas building两种程序对比分析小震弹性计算结果,采用YJK相关分析模块补充弹性时程及静力弹塑性分析,并根据计算结果针对性加强结构薄弱部位。针对结构不规则严重程度,选用针对构件的抗震性能设计,采取合适的加强措施保证了结构关键部位具有良好的抗震性能,经过分析调整后各项计算指标均满足相关规范要求。同时系统介绍了该工程地基基础设计特点、结构体系选取、上海地区的抗震性能化设计思路和方法。

The seismic design and analysis of a 66.3 m high-rise building are introduced. The structure adopts steel frame structure system(first floor with support). In order to meet the requirement of building function and size, the building has irregular structure of torsional irregular, floor discontinuity, size mutation and local wear column, etc, YJK and Midas building programs are used to design the elastic analysis of the structure under frequent earthquakes. YJK correlation analysis module is used to the elastic time history analysis and the static elastic-plastic components analysis, so the weak parts of the building were discovered and optimized. For severity of structural irregularities, choosing the appropriate seismic performance design method for Specified component and taking appropriate strengthening measures, the key structure position has good seismic performance. After analysis and adjustment, all calculation indexes meet the requirements of the code. The foundation design, structure characteristics, principles and methods of performance-based seismic design were described systematically in Shanghai area.