| 传递系数法中条块间应力的探讨 |
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| 引用本文： | 易朋莹, 邓时义, 吕涛. 2012: 传递系数法中条块间应力的探讨. 工程地质学报, 20(4): 478-482. |
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| 作者姓名： | 易朋莹 邓时义 吕涛 |
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| 作者单位： | 1.重庆大学土木工程学院 重庆 400045;;2.重庆市高新工程勘察设计院有限公司 重庆 401121;;3.四川宏扬建筑集团有限公司 资阳 641500;;4.重庆市交通规划勘察设计院 重庆 401121 |
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| 基金项目： | 国家杰出青年科学基金(50625824)和重庆市科委重点攻关项目(CSTC 2006AB7003) |
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| 摘 要： | 根据对传递系数法条块间作用力性质及与主动土压力和被动土压力关系进行的分类,揭示了其中3类计算成果与条块间的实际应力状态不符,分析成果偏危险。结合Mohr-Coulomb屈服准则,分析了问题原因,并求解了条块间应力的极限值。结论表明:当条块间作用力小于主动土压力时后侧条块发生主动破坏,条块间作用力应采用主动土压力,当作用力大于被动土压力时前侧条块将发生被动破坏,条块间作用力采用被动土压力,并将研究成果运用到工程案例。
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| 关 键 词： | 传递系数法 Mohr-Coulomb 主动土压力 被动土压力 下滑力 |
| 收稿时间： | 2011-10-11 |
| 修稿时间： | 2012-03-01 |
DISCUSSION OF INTER-SLICE ACTION IN TRANSMITTING COEFFICIENT METHOD |
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| YI Pengying, DENG Shiyi, LV Tao. 2012: DISCUSSION OF INTER-SLICE ACTION IN TRANSMITTING COEFFICIENT METHOD. JOURNAL OF ENGINEERING GEOLOGY, 20(4): 478-482. |
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| Authors: | YI Pengying DENG Shiyi LV Tao |
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| Affiliation: | 1.College of Civil Engineering,Chongqing University,Chongqing 400045;;2.Chongqing Hi-Tech Engineering Reconnaissance & Design Institute,Chongqing 401121;;3.Sichuan Hong-yang Construction Clan Company,Ziyang 641500;;4.Chongqing Communications Planning Survey & Design Institute,Chongqing 401121 |
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| Abstract: | The inter-slice action of transmitting coefficient method is classified according to its properties and the relationship among the inter-slice action and active earth pressure and passive earth pressure. This paper reveals that the three types of calculation results discord with the real stress state, which is more dangerous. The reason for the problem is analyzed. The limit value of the inter-slice stress is solved with the Mohr-Coulomb yield criterion. The finding shows that the rear slice can occur active destruction when the inter-slice action is less than the active earth pressure. So the inter-slice action should take active earth pressure. The anterior slice can occur passive destruction when the inter-slice action is more than the passive earth pressure. So the inter-slice action should take passive earth pressure. The research results are applied to engineering cases. |
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| Keywords: | Transmitting coefficient method Mohr-Coulomb Active earth pressure Passive earth pressure Downslide strength |
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