水泥混凝土路面层间剪切刚度试验研究  

Test and Study of Interlayer Shear Stiffness for Cement Concrete Pavement

作　　者：张艳聪[1,2] 高玲玲[3] 申俊敏[1] 

机构地区：[1]山西省交通科学研究院黄土地区公路建设与养护技术交通行业重点实验室,太原市030006 [2]长沙理工大学道路结构与材料交通行业重点实验室,长沙市410014 [3]山西水利职业技术学院道路与桥梁工程系,运城市044004

出　　处：《公路》2015年第9期10-13,共4页Highway

基　　金：国家自然科学基金项目;项目编号51308329;山西省自然科学基金项目;项目编号2013011027-1;长沙理工大学道路结构与材料交通行业重点实验室开放基金资助项目;项目编号kfj140305

摘　　要：利用可模拟竖向应力的水平剪切试验仪,对层间经乳化沥青、土工布和沥青混凝土夹层处置的水泥稳定碎石水泥混凝土路面进行剪切试验,得到了路面结构在结合和分离两种状态时的水平剪切刚度,并分为两个阶段对层间抗剪能力进行了评价。结果表明:当层间黏结时,使用乳化沥青处置的试件克服层间黏结所需的剪力最大、土工布次之、沥青混凝土夹层最小,此时层间处置措施的选择需要在降低面层弯拉应力和温度应力间寻求平衡;与层间黏结的试件相比,层间分离后,剪切刚度大幅降低,路面结构分析时只有选择相应状态的层间剪切刚度才能保证结果的可靠性。The interlayer shear tests of cement concrete pavement specimen have been carried out using shear tester which can simulate vertical stress. The interlayer shear stiffness is obtained when the pavement structure is in combination and in separation, and the ability of interlayer shear is analyzed in two phases. The results show that. when the slab and base is in combination, specimen that using emulsified asphalt as interlayer requires the maximum shear, then geotextile and asphalt concrete. Meanwhile, geotextiles required little and asphalt concrete was minimum. At this time, interlayer measure selection needed to find a balance between flexural tensile stress and thermal stress of slab. Compared with the specimen slab and base was combination, interlayer shear stiffness reduced significantly When slab and base was separation. Hence only appropriate shear stiffness can ensure the reliability of results when analyzed the pavement structural.

关 键 词：道路工程 水泥混凝土路面 层间剪切试验 层间剪切刚度 

分 类 号：U416.216[交通运输工程—道路与铁道工程]