某全钢结构地震模拟振动台试验和理论研究

Shaking table test and theoretic research on steel structural model

对体型不规则的全钢结构建筑进行了地震模拟振动台试验研究和理论分析,这种结构体系是由内椭球塔与外框筒连接而成的特殊结构体系。地震模拟试验结果表明这种结构体系仍然以主振型为主,内椭球塔与外框筒连接方式能够满足设计要求。文末采用SAP2000程序对结构模型进行三维受力分析,沿最不利加振方向的理论分析结果与振动台试验结果显示该结构在设计地震作用下,具有足够的安全性。

A new type steel structure with non-regular style is analyzed through shaking table test and theory research, the structure is a special system constituted by inner elliptical ball tower and outer frame tube. The results of shaking table test show that the structure still vibrates by its main mode, and the design of joint link between inner elliptical ball tower and outer frame tube is safe enough under the action of design earthquake according to the code. Dynamic analysis with 3-dimention computation model of the structure is performed with SAP2000 program in the end of the paper, both theory analysis results and shaking table test results show that the structure has enough safety under the action of design earthquake even along the most danger vibration direction.