| 基于断裂力学理论的重力坝使用寿命估算 |
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| 引用本文： | 祁顺彬,王向东.基于断裂力学理论的重力坝使用寿命估算[J].河海大学学报(自然科学版),2004,32(4):402-404. |
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| 作者姓名： | 祁顺彬 王向东 |
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| 作者单位： | 河海大学土木工程学院,江苏,南京,210098;河海大学土木工程学院,江苏,南京,210098 |
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| 摘 要： | 针对重力坝坝踵裂缝处于工一Ⅱ复合型状态的特点，引入相当应力强度因子概念并结合Pails公式，用断裂力学理论和方法对重力坝寿命估算进行了初步探讨，给出了重力坝寿命估算的计算公式．该公式在理论上有一定的合理性，有助于改进坝工技术，提高坝工建筑物安全等级评估的准确性．
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| 关 键 词： | 重力坝 裂缝 扩展速率 寿命估算 |
| 文章编号： | 1000-1980(2004)04-0402-03 |
| 修稿时间： | 2004/11/11 0:00:00 |
Fracture mechanics-based estimation of service life of gravity dams |
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| QI Shun-bin,WANG Xiang-dong.Fracture mechanics-based estimation of service life of gravity dams[J].Journal of Hohai University (Natural Sciences ),2004,32(4):402-404. |
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| Authors: | QI Shun-bin WANG Xiang-dong |
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| Abstract: | In consideration of the fact that the cracks on the heel of gravity dams were in the I-II complicated state, a preliminary study was made on the service life estimation of gravity dams with the theory and method of fracture mechanics by introduction of the concept of the equivalent stress intensity factor and combination with the Paris formula, and a formula for estimating the service life of gravity dams was given. The formula presented is reasonable in theory and is helpful to the improvement of the techniques of dam construction and the accuracy of safety grade evaluation of dam buildings. |
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| Keywords: | gravity dam crack ratio of propagation life estimation |
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