| 经典朗肯土压力墙后土体滑裂面机制研究 |
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| 引用本文： | 陈文胜,赵勤彦,凌同华.经典朗肯土压力墙后土体滑裂面机制研究[J].岩土力学,2011,32(12):3571-3576. |
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| 作者姓名： | 陈文胜 赵勤彦 凌同华 |
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| 作者单位： | 长沙理工大学 土木与建筑学院，长沙 410114 |
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| 摘 要： | 朗肯土压力理论至今仍是计算土压力的重要方法。由于朗肯主动土压力分布是根据墙后土体应力达到极限状态而得到的，根据极限应力状态认为墙后极限土体的滑动面为一簇平面，由此计算墙后极限土体与土压力的力学平衡不能满足。从极限平衡理论出发，针对朗肯主动土压力下墙后土体极限滑动面问题，明确提出墙后极限土体边界为滑动平面和开裂面的组合，提出的滑裂面（包含滑动面和开裂段）从力学平衡、土压力分布、土压力合力大小等方面完全符合朗肯主动土压力的理论解，可认为是朗肯主动土压力所对应的墙后土体真实滑裂面。同时对朗肯理论的墙后拉应力问题也作出了相应解释，并论证了被动土压力的墙后土体滑动面为一簇平面。研究结论对朗肯土压力理论是一个补充和完善
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| 关 键 词： | 朗肯土压力理论 极限平衡 极限土体 滑动面 |
| 收稿时间： | 2010-12-07 |
Sliding surface mechanism of limit soil mass under classical Rankine earth pressure |
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| CHEN Wen-sheng,ZHAO Qin-yan,LING Tong-hua.Sliding surface mechanism of limit soil mass under classical Rankine earth pressure[J].Rock and Soil Mechanics,2011,32(12):3571-3576. |
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| Authors: | CHEN Wen-sheng ZHAO Qin-yan LING Tong-hua |
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| Institution: | School of Civil Engineering and Architecture, Changsha University of Science and Technology, Changsha 410114, China |
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| Abstract: | Nowadays,Rankine's earth pressure theory is still playing an important role on calculating soil earth pressure.Based on Rankine's theory,active earth pressure behind the wall is distributed to reach a limit equilibrium state in which the sliding surface of limit soil mass is considered as a cluster of planes.Proceeding from limit equilibrium theory,it is pointed out that the boundary of limit soil mass is a combination of sliding surface and crack section.This proposed sliding-cracking surface,which is in f... |
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| Keywords: | Rankine's earth pressure theory limit equilibrium limit soil mass sliding surface |
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