摘要
针对土体自身特性及深基坑开挖工程的特点,总结分析了土压力随位移和时间的变化规律,初步讨论了考虑位移效应和时间效应的土压力计算公式.考虑基坑工程位移和时间的耦合作用,运用耦合理论,提出了基于时空效应的土压力计算方法.实际工程分析结果表明,该方法比传统计算方法更接近实测值,误差仅为传统方法误差的1/5～ 1/4.该方法完善了基坑支护设计理论,对基坑设计与施工具有一定的指导作用.
According to the characteristics of soil and deep foundation excavation,the earth pressure variety as displacement and time has been analyzed and summarized.Meanwhile,the earth pressure calculation formula considering the effects of both displacement and time has been discussed.The earth pressure calculation formula considering time-space effect has been put forward by coupling the factors of both displacement and time.Analytical results show that the method is more close to the infact value than the traditional method,and the error is 1/5 ～ 1/4 of the traditional method.The method has supplemented the theory of excavation and instructed the design of pit and construction.
出处
《四川建筑科学研究》
2014年第4期153-155,共3页
Sichuan Building Science
关键词
基坑开挖
时空效应
土压力
耦合
excavation
time-space effect
earth pressure
coupling
