土工网格防治道路反射裂缝的研究  

Study on the Effects of geotextile used to Manage Reflecting Cracks of road

作　　者：王琼[1] 陈刚[2] 李秀平 

机构地区：[1]哈尔滨学院,哈尔滨150080 [2]黑龙江科技学院,哈尔滨150027 [3]神华集团神搠铁路公司,陕西榆林719316

出　　处：《工程建设与设计》2005年第6期83-85,共3页Construction & Design for Engineering

摘　　要：为了防止反射裂缝的产生和扩散,在实际工程中较常用的方法是在旧水泥混凝土道面和沥青面层之间设置防裂夹层。使用防裂夹层后的具体物理力学效果、防裂夹层的作用机理以及应力分析的研究一直较为人们所关注。为了更进一步的对其进行研究,该文章采用有限元原理,利用有限元分析软件-ANSYS,针对已具有裂缝的道路,分别采用加土工网格前的道路模型和加土工网格后的道路模型进行数值模拟和分析的研究,得到两种模型的应力分布图和沥青底层的应力曲线图。通过对两种模型的应力分布图和各自沥青底层的应力曲线图的对比分析,能够看出土工网格的加入可以使整个模块的应力集中现象得到减小,这样就从一定程度上防止了反射裂缝的产生和扩散,同时也揭示了土工网格的防裂作用和增强道路强度的机理。In order to prevent the bringing and diffusing of split on the road, intermediated layer of defending is often used in practical engineering. But people are pay attention to physical and dynamic effect ,and the mechanism of action of intermediated layer of defending .This article is according to finite element principles, using the finite element analyzing software ANSYS, applying the two models of with geo-technological network and without geo-technological network for Proceeding number emulation aim at the road that already have cracks, the stress distributing diagrams and the stress curves of bituminous floor were obtained for the two models. By comparing the number emulation results with one to another, we can see that the stress of the whole model have decreased in a great degree when adding geo-technological network in bituminous concrete, so it can prevent the diffusion of the cracks. We can announce geo-technological network preventing split function and the principle of strengthening. [

关 键 词：土工网格 复合材料 防裂夹层 反射裂缝 

分 类 号：U416.217[交通运输工程—道路与铁道工程]