摘要
对青岛地区某深基坑工程的20个粉质粘土原状饱和试样在K0状态下进行不排水卸荷试验,对其应力-应变关系进行分析研究,目的在于了解该种土在卸荷条件下试验应力-应变的变化规律,探索弹性模量方程的形式。研究结果表明:卸荷条件下该土的试验应力-应变曲线仍可用双曲线形式模拟,且与常规三轴压缩试验应力-应变曲线相似,它们之间可用一个常量来表达,而其弹性模量却有各自不同的表达形式。
A series of experimental researches on the deformation character were made for 20 undisturbed saturated samples of silty clay from a deep foundation pit in Qingdao at K0 state with no drain. The stress-strain curves are tested aiming at finding out equations of elastic modulus in unloading condition of silty clay. The result shows that the stress-strain curve in unloading condition is a hyperbola similar to the routine one of three-axis compression tests while the equation of elastic modulus is different from each other.
出处
《山东建筑工程学院学报》
2003年第3期15-18,共4页
Journal of Shandong Institute of Architecture and Engineering
关键词
基坑
开挖
卸载
土体
变形
试验
粉质粘土
foundation pit
unloading
stress-strain
experimental research
