地震动力弹塑性稳定如何考虑

How to Consider Dynamic Elastic-Plastic Stability Due to Earthquake

介绍了可资利用的延性系数与二阶效应系数之间的关系以及设防目标分别是震后使用、震后可修和震后不倒时的地震作用相对大小,对美国、欧洲和新西兰抗震设计规范对地震动力稳定的考虑方法进行了简要分析,给出了弹塑性静力二阶效应与地震动力二阶效应的公式和为确保不发生地震动力弹塑性失稳需要引入的地震作用放大系数。

The relation between the applicable ductility factor with the factor of the second-order effect was presented,the seismic forces for three different fortification aims were presented.Considerations of the dynamic stability in seismic design in the codes of USA,Europe and New Zealand were briefly introduced.Formulas for the static and dynamic elastic-plastic second-order effects were presented and the amplification factors of seismic action due to the elastic-plastic dynamic second-order effect was presented.