| 浅议非饱和土基坑无支护开挖深度的确定 |
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| 引用本文： | 陆秋生,阎长虹. 浅议非饱和土基坑无支护开挖深度的确定[J]. 地球科学与环境学报, 2003, 25(3): 52-55 |
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| 作者姓名： | 陆秋生 阎长虹 |
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| 作者单位： | 1. 南京大学,地球科学系,江苏,南京,210093;山东岩土工程勘察总公司,山东,济南,250014
2. 南京大学,地球科学系,江苏,南京,210093 |
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| 摘 要： | 在D.G.Fredlund等的非饱和土抗剪强度理论及其延伸的Rankine土压力公式以及国内学者卢肇钧等近年来的研究成果(用膨胀力代替基质吸力来刻画非饱和土的抗剪强度)的基础上,推导了含膨胀力的非饱和土竖直边坡临界高度的计算公式,初步探讨了非饱和土基坑无支护开挖深度的确定方法。
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| 关 键 词： | 非饱和土基坑 膨胀力 基质吸力 无支护开挖 |
| 文章编号： | 1007-9955(2003)03-0052-04 |
| 修稿时间： | 2002-10-30 |
CALCULATION OF UNSUPPORTED EXCAVATION DEPTH OF UNSATURATED SOIL SLOPE |
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| Abstract: | D.G.Fredlund's shear strength theory or extended Rankine earth pressure formula for unsaturated soils, and experts for example professor LU Zhaojun's study achievements-describing unsaturated soils's strength with swelling pressure instead of matric suction are introduced. Based on those, the derivation formula for calculating critical height of vertical slope is given .Unsupported excavation depth for unsaturated soils slope is discussed. |
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| Keywords: | unsaturated soil slope swelling pressure matric suction unsupported excavation |
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