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以再生资源交易所项目为例,从结构体系、前期分析、计算分析、超限专家修改意见4个方面详细介绍超高层结构设计的实施过程和设计依据。本项目为主体41层、高185.8m的公建式公寓,结构形式为矩形钢管混凝土框架-钢筋混凝土核心筒结构。以超限情况介绍为出发点,进行结构体系的分析,拟定合理的抗震性能设计目标,采用了两种计算软件分别在小震、中震及大震情况下,进行了结构整体计算分析。通过弹塑性时程分析找出薄弱部位,并在施工图设计时对薄弱部位进行有针对性的加强,以达到结构的抗震设防目标。研究结果表明,对复杂高层的结构设计,应采用基于性能化的抗震设计方法进行弹性及弹塑性分析,达到预期的性能目标。并根据超限审查意见对中震及大震计算进行部分调整,指导施工图设计。
Take the project of renewable resource exchange as an example, the implementation process and design basis of super high-rise structure design are introduced in detail from the aspects of structural system, preliminary analysis, calculation and analysis, and expert opinions on overrun. The project is a 41-storey, 185.8-m high-rise apartment building in the form of a rectangular CFST frame-reinforced concrete core tube structure. Based on the introduction of the overrun situation, the structural system analysis and the design of a reasonable seismic performance design were made. Two kinds of calculation software were used to calculate and analyze the structure under the condition of small earthquake, moderate earthquake and large earthquake respectively. Through the analysis of elasto-plastic time-history, the weak parts are found out, and the weak parts are reinforced in the design of the construction drawings to achieve the seismic fortification goal of the structure. The results show that the structural design of complex high-rise should be based on the performance-based seismic design method of elasticity and elastoplastic analysis to achieve the desired performance goals. According to the opinion of overrun, some adjustments were made to the calculation of the moderate earthquakes and large earthquakes to guide the design of construction drawings.