| 冻土断裂力学破坏准则及其在工程中的应用 |
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| 引用本文： | 李洪升,刘晓洲,刘增利.冻土断裂力学破坏准则及其在工程中的应用[J].土木工程学报,2006,39(1):65-69. |
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| 作者姓名： | 李洪升 刘晓洲 刘增利 |
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| 作者单位： | 大连理工大学,辽宁,大连,116024 |
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| 摘 要： | 考虑冻土自身存在的各种缺陷及冻胀力的作用和影响,应用断裂力学理论与方法,研究冻土破坏的机理,建立了冻土断裂力学破坏准则。该准则适用于脆性破坏并在小范围屈服条件下的冻土。对于冻土地基临塑荷载的确定以及在较低负温下的地基基础的破坏问题,该准则也是适用的。通过实际冻土工程问题的应用表明,冻土断裂破坏准则符合冻土的实际和特点,是有效的。
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| 关 键 词： | 冻土 断裂力学 破坏准则 |
| 文章编号： | 1000-131X(2006)01-0065-06 |
| 修稿时间： | 2004年4月12日 |
Failure criteria of frozen soil based on fracture mechanics and its application in engineering |
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| Li Hongsheng,Liu Xiaozhou,Liu Zengli.Failure criteria of frozen soil based on fracture mechanics and its application in engineering[J].China Civil Engineering Journal,2006,39(1):65-69. |
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| Authors: | Li Hongsheng Liu Xiaozhou Liu Zengli |
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| Abstract: | Considering various kinds of deficiencies existing in material and frost heaving force effects,a failure criterion is established for frozen soil based on the fracture mechanics theory.The criterion is useful for frozen soil under smallscale yield condition,and it is also applicable for determination of the critical load and failure state of frozen ground foundations.Analysis of practical engineering samples shows that the criterion is reasonable and powerful.The criterion was applied to actual frozen soil projects and was found to be suitable for engineering practice. |
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| Keywords: | frozen soil fracture mechanics failure criterion |
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