期刊论文

Experimental study on compressive-shear strength of rigid-flexible composite pavement structure

中文

东南大学学报(自然科学版)

1001-0505

2019

49

6

1130-1135

10.3969/j.issn.1001-0505.2019.06.016

51678078:国家自然科学基金 51878076:国家自然科学基金 2018JJ2433:湖南省自然科学基金

本校为第一机构

研发了一套室内试验装置及方法,通过设置倾角将竖向载荷分解为垂直或平行于试件表面的分力,实现对刚柔复合式路面结构的室内压剪试验.采用Abaqus软件分析了复合试件的三维应力分布,通过室内试验对比了不同试验方法的强度值,测试了不同因素对压剪强度的影响,并拟合出考虑温度和沥青层厚度的压剪强度模型.有限元分析结果表明,试验采用的压头和试件组合能较好地模拟实际路面结构的应力分布状态.试验结果表明,温度和沥青层厚度是影响复合式试件压剪强度值的主要因素.当试件压剪破坏时,对应的层间剪应力恒小于层间剪切强度,若荷载扩散角为45°,则层间剪应力仅为层间剪切强度的8%,从而确定了复合试件的...

A set of laboratory load device and test method was developed. The vertical load was decomposed into the perpendicular or parallel forces to the surface of the specimen by setting dips to realize the laboratory compressive-shear tests for rigid-flexible composite pavement structure. The three-dimensional stress distribution of the composite specimen was analyzed by Abaqus software. The strength values of different test methods were compared by indoor experiments, and the effects of different factors on the compressive-shear strength were tested...