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海绵城市透水水泥混凝土路面结构力学响应分析 预览

Mechanical Response Analysis of Permeable Cement Concrete Pavenment Structure in Sponge City
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摘要 为了分析海绵城市透水水泥混凝土路面结构力学响应,运用有限元软件ANSYS建立三维有限元路面模型,计算在车辆荷载作用下各结构层力学指标的变化规律。结果表明:在设有透水沥青混合料功能层的透水水泥混凝土路面中,功能层对多孔混凝土层层底拉应力折减作用比较小;表层排水型透水水泥混凝土路面中水泥混凝土层厚度是影响路面结构力学响应的最主要因素;基层储排水型透水水泥混凝土路面多孔混凝土基层厚度是影响路面结构力学响应的最主要因素;全透型透水水泥混凝土宜采用低模量高厚度设计,用于低承载道路。采用均匀设计法,通过回归分析得到透水水泥混凝土路面各力学指标的计算公式。 In order to analyze the mechanical response of permeable cement concrete pavement strucure in sponge city, three-dimensional finite element pavement model was established with finite element software ANSYS to calculate the variation rule of mechannical index of each structural layer under vehicle load. The results show that, in the permmeable cement concrete pavement with functional layer of permeable asphalt mixture designed, the functional layer has less effect on the tensile stress reduction at the bottom of the porous concrete layer;for the surface drainage type permeable cement concrete pavement, the thickness of cement concrete layer is the most important factor influencing the mechanical response of the pavement structure;for the base storage and drainage type, the thickness of porous concrete pavement base is the main influencing factor;for fully permeable type, the design of low modulus and high thickness is preferred for low-load road. Finally, by uniform design method, the formula calculating the mechanical index of permeable cement concrete pavement is obtained by means of regression analysis.
作者 郑木莲 邓朝显 梁行行 姬国强 马越 高骞 马笑 马强 ZHENG Mulian;DENG Zhaoxian;LIANG Hanghang;JI Guoqiang;MA Yue;GAO Qian;MA Xiao;MA Qiang(Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang an University,Xi an 710064, China;The Technology Research Center for Sponge City, Fengxi New City Development and Construction Group Co., Ltd.of Shanxi Xixian New Area, Xianyang 712000, Shanxi, China)
出处 《路基工程》 2019年第2期71-77,共7页 Subgrade Engineering
关键词 海绵城市 多孔混凝土 力学响应 有限元 回归公式 sponge city porous concrete mechanical response finite element regression formula
作者简介 郑木莲(1979-),女,山东蒙阴人。教授,博士,从事道路工程结构与材料研究工作。E-mail:zhengmulian@163.com.
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