雨天路滑现象的力学建模与分析

发布时间：2018-06-01 15:40

  本文选题：土力学 + 路滑　； 参考：《力学与实践》2017年04期

【摘要】：针对雨天路滑这一自然现象,基于土力学固结理论、强度理论和有效应力原理等,探讨提出了简化一维等效模型条件下的建模分析方法.采用固结土体抗剪强度除以剪应力的形式,建议了一种道路表面抗滑安全系数.结合工程经验性常见土体参数和路面行走算例,按简化模型进行了定性和定量分析,探讨了路滑的影响因素及其规律.结果表明,在算例条件下,一般砂土路面抗滑安全系数大致为黏土路面的6.0～9.0倍.土力学模型有望为路面抗滑设计和评估提供新的思路.
[Abstract]:Based on the consolidation theory of soil mechanics, strength theory and effective stress principle, a simplified one-dimensional equivalent model is proposed to analyze the natural phenomenon of road slip in rainy days. In the form of shear strength of consolidated soil divided by shear stress, a safety factor of road surface skid resistance is suggested. Combined with the common soil parameters of engineering experience and the calculation examples of pavement walking, qualitative and quantitative analysis were carried out according to the simplified model, and the influencing factors and their laws of road slip were discussed. The results show that the safety coefficient of general sand pavement is about 6.0 ~ 9.0 times of that of clay pavement. Soil mechanics model is expected to provide a new idea for pavement anti-slide design and evaluation.
【作者单位】： 北京交通大学土木建筑工程学院;
【基金】：国家自然科学基金项目(51278028) 中央高校基本科研业务费专项资金项目(2014JBM087)资助
【分类号】：TU43;U416.2
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本文编号：1964706