液化土层隔震和地基失效共同作用下多层砖房震害分析  

ANALYSIS OF MULTISTORY BRICK BUILDINGS UNDER MUTUAL ACTION OF ISOLATION AND FAILURE OF FOUNDATION INDUCED BY LIQUEFIED SOIL LAYERS

作　　者：石兆吉[1] 张荣祥[2] 孙锐[1] 

机构地区：[1]国家地震局工程力学研究所,哈尔滨150080 [2]建设部综合勘察研究院,北京100007

出　　处：《自然灾害学报》1995年第1期55-63,共9页Journal of Natural Disasters

摘　　要：对40个液化实例计算了震陷值和谱烈度比,依据宏观震陷经验,提出了在液化土层隔震和地基失效共同作用下多层砖房的震害预测方法。A method of earthquake damage prediction of multistory brick buildings under mutual action of isolation and the failure of foundation induced by liquefied soil layers is presented based on the values of ground subsidence and the ratios of spectrum intensity calculated through 40 examples of liquefaction and the character of macroscopic seismic damages. The authors point out that the greatest acceleration of ground motion can not show the correct load on the multistory brick buildings. The liquefied soil layers will have the effect of isolation on all multistory brick buildings and the difference of the effect is only the extent. In the same case of the foundation failure, isolation is the control and decisive factor for the effect of the liquefaction on multistory brick buildings. The limit of hP . the calculated value of the subsidence, should be less than 4 cm, and for these cases, the effect of the liquefaction on multistory brick buildings is not considerable.

关 键 词：震灾预测 液化土层 隔震和地基失效 多层砖房 

分 类 号：TU352.1[建筑科学—结构工程]