| 桥梁基桩下伏溶洞围岩应力状态分析 |
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| 引用本文： | 李先昆,张燕奇. 桥梁基桩下伏溶洞围岩应力状态分析[J]. 科学技术与工程, 2012, 12(14): 3390-3393,3410 |
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| 作者姓名： | 李先昆 张燕奇 |
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| 作者单位： | 1. 中国有色金属工业昆明勘察设计研究院,昆明,650051
2. 云南国土资源职业学院,昆明,650217 |
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| 摘 要： | 运用弹塑性力学基本理论,首先分析了地基中下伏溶洞围压应力状态,辨识应力集中影响范围,并讨论了溶洞洞体形状以及地下水位埋深对溶洞壁应力状态的影响。研究表明,基于厚壁圆筒分析的溶洞围岩应力集中效应带大于6a,基于厚壁圆球分析的溶洞围岩应力集中效应带大于4a;溶洞几何尺寸、土体侧压力系数、m值和地下水位埋深均会对溶洞围岩应力状态产生显著影响。
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| 关 键 词： | 岩溶 溶洞 弹塑性力学理论 应力状态 |
| 收稿时间： | 2012-02-22 |
| 修稿时间： | 2012-02-22 |
Analysis of the stress state of the cave wall-surrounding body under bridge |
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| LI Xiang-kun and. Analysis of the stress state of the cave wall-surrounding body under bridge[J]. Science Technology and Engineering, 2012, 12(14): 3390-3393,3410 |
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| Authors: | LI Xiang-kun and |
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| Affiliation: | WANG Xi-nan1,ZHANG Yan-qi2,WANG Jiang-liang2(Kunming Prospecting Design Institute of China Nonferrous Metals Industry1,Kunming 650051,P.R.China;Yunnan State Land Resources Vocational College2,Kunming 650217,P.R.China) |
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| Abstract: | Based on the plastoelasticity theory,the stress state of the cave wall-surrounding body in the foundation,distinguish the stress concentration influence area is firstly analyzed.The influence of the cave shape and groundwater level was further studied.And the research indicated that the stress concentration influence area larger than 6a which based on the analysis of thick-wall cylinder,but the stress concentration influence area larger than 4a which based on the analysis of thick-wall sphere.The stress state of the cave wall-surrounding body are remarkably influenced by shape dimensions,lateral earth pressure,the value of m and groundwater level. |
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| Keywords: | Karst cave plastoelasticity theory stress state |
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