近断层地震动的预测是当前地震工程中的一个关键科学问题。对预测中涉及的震源和三维地下结构建模、格林函数的计算和预测方法等基本问题做了探讨。分析了震源模型中全局和局部震源参数,给出一套震源建模方案;通过各种格林函数的对比分析,指出宽频带格林函数法是当前近断层地震动预测中最合适的方法。对近断层场地非线性分析的一些问题也进行了讨论。
Currently,predication of near-fault strong ground motion is one of key problems in earthquake engineering.Some basic problems such as the model construction of earthquake souce and 3-D underground structure,the calculation of Green function and the technique of prediction are discussed in this paper.The global and local source parameters are analyzed,and a scheme of earthquake source construction is given here.By comparing different Green functions,the results are shown that the broad-band Green function is...