duration of earthquake

To study the influences of duration of strong earthquakes on structures can help us comprehend the responses of the structures and improve their seismic capacity.

大跨度桥梁动力特性很复杂，而且它们一般都具有较长的自振周期，对于这些中长周期结构，研究强震持续时间对其地震反应的影响，有益于认识此类结构的地震反应特点和提高其抗震能力。