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。
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.
出处
《土木工程学报》
EI
CSCD
北大核心
2006年第1期65-69,78,共6页
China Civil Engineering Journal
基金
国家自然科学基金(50278010)
关键词
冻土
断裂力学
破坏准则
frozen soil
fracture mechanics
failure criterion
