| 考虑中间主应力影响时的圆筒形孔扩张问题的弹塑性解 |
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| 引用本文： | 周小平 张永兴 等. 考虑中间主应力影响时的圆筒形孔扩张问题的弹塑性解[J]. 土木建筑与环境工程, 2002, 24(2): 35-38 |
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| 作者姓名： | 周小平 张永兴 等 |
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| 作者单位： | [1]上海交通大学建工学院，上海200030 [2]重庆大学土木工程学院，重庆400045 |
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| 基金项目： | 国家自然科学基金资助项目 (5 98790 12 ) |
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| 摘 要： | Tresca强度理论、Mohr-Coulomb强度理论在求解圆筒形孔扩张问题时的弹塑性解并没有考虑中间主应力的影响。本文首次考虑中间主应力影响时求解圆筒形孔扩张问题的弹塑性解。计算表明考虑中间主应力时圆筒形孔的塑性区半径有明显减少。据此可以充分发挥岩土体自身的承载能力，对岩土工程有重要意义。
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| 关 键 词： | 圆筒形孔扩张 中间主应力 弹塑性解 隧道 围岩 |
| 修稿时间： | 2002-01-16 |
Influence of Neutral Principal Stress on the Elastic-Plastic Solution of Expansion of Cylinder Cavities |
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| ZHOU Xiao ping,ZHANG Yong xing,WANG Jian hua. Influence of Neutral Principal Stress on the Elastic-Plastic Solution of Expansion of Cylinder Cavities[J]. Journal of Civil,Architectrual & Environment Engineering, 2002, 24(2): 35-38 |
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| Authors: | ZHOU Xiao ping ZHANG Yong xing WANG Jian hua |
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| Abstract: | In the elastic-plastic solution of expansion of cylinder cavities based on Tresca strength criterion and Mohr-Coulomb strength criterion, the influence of neutral principal stress is not considered. In this paper the influence of neutral principal stress on elastic-plastic solution of expansion of cylinder cavities is considered. The calculation shows that the radius and displacement of plastic zone will reduce when the neutral principal stress is considered. The conclusions are of practical significance for geotechnical engineering. |
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| Keywords: | expansion of cylinder cavities neutral principal stress elastic-plastic solution |
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