| 考虑温度应力和荷载应力共同作用的混凝土路面结构设计方法 |
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| 引用本文： | 袁宏,姚祖康.考虑温度应力和荷载应力共同作用的混凝土路面结构设计方法[J].同济大学学报(自然科学版),1986(4). |
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| 作者姓名： | 袁宏 姚祖康 |
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| 作者单位： | 同济大学道路与交通工程系
(袁宏)，同济大学道路与交通工程系(姚祖康) |
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| 摘 要： | 水泥混凝土路面的疲劳损坏,系由荷载应力和温度翘曲应力综合作用所引起。作者引用各地混凝土路面温度观测站的实测资料和小梁疲劳方程,按等效疲劳损耗的原则,推算了全国各自然区划水泥混凝土路面的疲劳温度梯度值,并由此提出了一种可考虑二种应力综合作用的路面结构设计方法。这种方法十分简便,与应用Miner定律设计结果一致。
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| 关 键 词： | 混凝土路面 疲劳寿命 |
Design Procedure For Concrete Pavements Considering Combined Fatigue Damage of Loading and Warping Stresses |
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| Yuang Hong,Yao Zukang.Design Procedure For Concrete Pavements Considering Combined Fatigue Damage of Loading and Warping Stresses[J].Journal of Tongji University(Natural Science),1986(4). |
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| Authors: | Yuang Hong Yao Zukang |
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| Institution: | Yuang Hong;Yao Zukang Department of Road and Traffic Engineering |
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| Abstract: | Both the fluctuating thermal gradient and repeated traffic loading contribute to fatigue damage in concrete pavements. It is very difficult and time-consuming to consider their combined fatigue damage in detail when designing every project.A simplified and reasonable procedure has been proposed for considering the com-bined effect of loading and warping stresses by using the equivalent fatigue ther-mal graeient which would have the equivalent fatigue damage effect as in actualconditions. Empirical and theorectical equations for predicting this equivalentfatigue thermal gradient have been established based on statistically analyzingthermal gradient and traffic data collected from many obsernation stations, andon fatigue equation derived from laboratory fatigue tests on beam specimens. Thisprocedure results in same thickness requirement as that by using the Miner's rule. |
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| Keywords: | Concrete pavements Fatigue life |
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