摘要
用液化后谱烈度比这一新指标来定量评价土层液化对房屋遭受的地震荷载的影响,同时研究了液化层厚度及其埋深、覆盖层刚度、液化层密度等因素所起的作用。计算结果表明,砖石房屋等短周期建筑物往往受到隔震作用;长周期房屋遭受的地震荷载的变化比较复杂,有时加强震动,有时减小震动,取决于许多因素。
A new paprameter. the spectrum indensity ratio, is used quantitatively to evaluate the effects of liquefaction of soil layers on seismic load applied to buildings and the effects of the depth and density of the soil layers and the rigidity of the overburden layers are discussed. The results obtained in the paper have shown that the liquefied soil layers may have isolation effects on the brick-stone buildings with short period. The effects of the liquefied layers on seismic loads on the buildings with long period are quite complicated and depending on many parameters the loads applied io the buildings can be increased or decreased.
出处
《世界地震工程》
CSCD
1995年第3期10-16,共7页
World Earthquake Engineering
基金
地震学联合基金资助课题
关键词
土壤液化
建筑
地震荷载
谱烈度比
震害
房屋
Soil liquefaction Buildings Seismic load Spectrum intensity ratio
