论文部分内容阅读
详细介绍了某四塔高位连体结构的抗震设计。连接体采用钢结构平面桁架体系,两个方向跨度均超过58m,属超限结构。根据连接体与筒体之间的不同连接方式,将分析模型简化为双塔连体结构。结合工程特点及超限情况,确定各构件的性能化抗震设计目标。对连接体及筒体角柱进行了中震弹性设计,并对连接体单独进行了三水准下竖向地震时程分析。在进行多遇水平地震分析时,采用两组地震波记录和一组人工波进行时程分析,并采用CQC组合进行了谱分析,结果表明各项指标均在规范允许的范围以内。采用基于能力谱法的Pushover方法研究了结构的弹塑性破坏机制,结果表明现行设计能够满足性能化设计目标。
Described in detail the seismic design of a four-tower high Siamese structure. The connecting body adopts the steel truss system, which has a span of more than 58m in both directions and is an overrun structure. According to the different connection between the connector and the cylinder, the analysis model is simplified to the twin tower one-piece structure. Combined with engineering features and overrun conditions, the performance of each component of the seismic design goals. The elastic design of the connector and the cylinder corner was carried out, and the vertical seismic time history of the connector under three levels was analyzed separately. During the analysis of multi-level seismic analysis, two sets of seismic records and a set of artificial wave were used for time history analysis. Spectral analysis was carried out using CQC combination. The results showed that all the indexes were within the range allowed by the code. Pushover method based on the power spectrum method was used to study the elasto-plastic failure mechanism of the structure. The results show that the current design can meet the performance-based design goals.