塘沽新港地区建筑物不均匀震陷分析

Earthquake-induced differential settlement of buildings in Tanggu area

采用不规则荷载下土的残余应变模型及土体逐步软化模型,考虑土、结构及地震波波形对不均匀震陷的协同作用效果,实现了对塘沽新港地区建筑物不均匀震陷的时程分析.该分析方法不仅克服了以往震陷分析方法仅能计算均匀震陷而无法计算不均匀震陷的不足,而且分析结果与现场实测结果较为接近.

By adoption of the residual strain model of soil under irregular loading and the progressive softening model of soil and in consideration of the co-action of soil, structure, and seismic wave on the differential settlement, the process of the differential settlement of two buildings in Tanggu area is analyzed. The present method overcomes the disadvantage of the former methods, which are unable to calculate the differential settlement, and the result of the present method is in good consistence with the data from the field earthquake investigation.