钢框架结构地震作用取值的分析
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摘要
通过对国内外抗震规范中抗震设计的思想、设防目标和地震作用取值方法的对比分析,指出了我国现行的抗震规范在钢结构抗震设计中地震取值存在的问题,即对钢结构地震作用取值偏高.在考虑了钢结构的延性性能、阻尼比等因素对结构地震作用的影响之后,给出了采用概率—延性调整系数的设计地震力的参考公式.
Through detailed contrastive analysis of the domestic and international seismic design thoughts,the earthquake value problems of Chinese current seismic code in the steel structure seismic design are indicated,which use the high value for the earthquake action.After considering the influences of the tensility performance and ratio of damping on the earthquake action of steel structure,the reference formula to design the earthquake force based on theλis given.
引文
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