| 基坑开挖卸荷土体变形的试验研究 |
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| 引用本文： | 何世秀,韩高升,庄心善,吴香国.基坑开挖卸荷土体变形的试验研究[J].岩土力学,2003,24(1):17-20. |
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| 作者姓名： | 何世秀 韩高升 庄心善 吴香国 |
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| 作者单位： | 1. 湖北工学院 土木工程系，湖北 武汉 430068 ; 2. 哈尔滨工程大学 建筑工程学院，黑龙江 哈尔滨 150001 |
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| 基金项目： | 湖北省教委重点科研课题资助项目(99A009) |
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| 摘 要： | 对武汉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。研究的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，而其弹性模量表达式却有各自不同的形式。
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| 关 键 词： | 基坑 卸荷 应力应变 试验研究 |
| 文章编号： | 1000-7598-(2003)01-0017-04 |
| 收稿时间： | 2001-12-28 |
| 修稿时间： | 2001年12月28 |
Experimental researches on unloading deformation of clay in excavation of foundation pit |
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| HE Shi-xiu,HAN Gao-sheng,ZHUANG Xin-shan,WU Xiang-guo.Experimental researches on unloading deformation of clay in excavation of foundation pit[J].Rock and Soil Mechanics,2003,24(1):17-20. |
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| Authors: | HE Shi-xiu HAN Gao-sheng ZHUANG Xin-shan WU Xiang-guo |
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| Institution: | （1. Department of Civil Engineering, Hubei Polytechnic University, Wuhan 430068, China; 2.Institute of Civil Engineering, Harbin Engineering University, Harbin 150001, China |
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| Abstract: | A series of experimental researches on the deformation character were made of twenty undisturbed saturated samples of silty clay from a deep foundation pit in Wuhan at K0 consolidation and no drained shear test. The aim of the tests is to find the test curve of stress-strain and equation of elastic modulus in unloading of silty clay. The research results have shown that the curve of stress-strain in unloading is a hyperbola and is similar to the curve of triaxial compression test, but there is difference of a constant between them, and the equation of elastic modulus is different each other. |
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| Keywords: | excavation unloading stress-strain experimental research |
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