基于三轴试验的软土震陷简化计算方法研究  

Study of Simplified Calculation Method for Seismic Settlement of Soft Soil Based on Triaxial Test

作　　者：李平[1] 田兆阳[2] 肖瑞杰[1] 张宇东[1] 

机构地区：[1]防灾科技学院,北京101601 [2]山东省地震局,济南250014

出　　处：《震灾防御技术》2017年第1期145-156,共12页Technology for Earthquake Disaster Prevention

基　　金：中央高校基本科研业务专项资金青年项目(ZY20140206);中央高校基本科研业务专项资金创新团队项目(ZY20160105);国家自然科学基金项目(51508096)

摘　　要：本文通过对天津滨海新区典型软土的静、动力学试验,分析了软土残余应变的变化规律,提出了结合地区震陷经验系数的软土震陷简化计算方法,并利用1976年唐山7.8级地震中天津塘沽地区软土震陷观测资料对计算方法进行了验证。结果表明,本方法用于估算自由地表震陷量是可行的,对中小工程中软土震陷量的估算具有一定的参考价值。Based on the static and dynamic mechanical test of soft soil in Tianjin, we analyzed change law of residual strain of soft soil. The estimation method based on static algorithm and empirical coefficient is developed to compute the seismic settlement of soft soil. By comparing the calculated results with the measured data in the 1976 Tangshan earthquake, we proved that this method is feasible. It can be used to estimate the seismic settlement of soft soil in small and middle scale engineering project.

关 键 词：软土动 三轴试验 残余应变 计算方法 

分 类 号：TU447[建筑科学—岩土工程]