Influence of Subgrade Dry-Wet State on Mechanical Response of Asphalt Pavement

doi:10.3969/j.issn.1674-0696.2013.01.08

Abstract

Abstract: The mechanical response of asphalt pavement under different condition of dry-wet subgrade was studied by BISAR3 software from the perspective of pavement mechanics. The change of the displacement,normal stress and shear stress of every layers were analyzed by roadbed resilient modulus and connection status between the layers. The results show that subgrade dry-wet state has great influence on asphalt pavement structure,especially the displacement and the bottom normal stress,and shear stress.

Key words: dry-wet state of soil, mechanical response, BISAR3, resilient modulus, connection status

摘要： 采用BISAR3 软件从路面力学的角度研究了不同干湿状态下的路基对沥青路面的力学响应,采用路基回弹模量和层间连接状态两个参数来分析路表弯沉、各层面的正应力和剪应力的变化情况。结果表明: 路基干湿状态对沥青路面结构的力学变化有很大影响,尤其是路面弯沉和基层层底拉应力,剪应力也有一定影响。

关键词: 路基干湿状态, 力学响应, BISAR3, 回弹模量, 层间连接状态

CLC Number:

U416.1

Gu Yunlin,He Xiangcheng,Yang Qianrong. Influence of Subgrade Dry-Wet State on Mechanical Response of Asphalt Pavement[J]. Journal of Chongqing Jiaotong University(Natural Science), 2013, 32(1): 32-36.

古芸琳，何相呈，杨倩荣. 路基干湿状态对沥青路面力学响应的影响[J]. 重庆交通大学学报（自然科学版）, 2013, 32(1): 32-36.

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