沥青混凝土桥面铺装结构的剪切分析  

Shear Analysis on Paving Structure of Asphalt Concrete Deck

作　　者：陈静云[1] 程伟蔚[1] 孔令然[1] 

机构地区：[1]大连理工大学建设工程学部,大连116085

出　　处：《北方交通》2010年第8期26-29,共4页Northern Communications

摘　　要：以室内斜剪试验为基础,采用有限元软件ANSYS对斜剪试验进行计算模拟。模拟了五种试验工况,分析了不同工况下沥青铺装层剪应力的分布情况,并研究其参数改变时结构层的剪应力响应。分析显示,粘结层是桥面铺装体系的薄弱位置。桥面铺装层粘结材料采用环氧沥青比SBS改性沥青具有更好的抗剪性能,而桥面铺装层厚度的增加,对于改善铺装层的受力状态,延长铺装层的使用寿命有一定的作用。This paper is based on interior oblique shearing test, using Finite element software ANSYS to simulate shearing test. Five test cases are simulated. The distribution of shearing stress of asphalt pavement under different condition is analyzed, and the shearing stress response is studied when its parameters changed. Analysis showed that adhesive layer is the weak position of bridge deck. Tack coat material will have better shearing capability if it used epoxy asphalt instead of SBS modified asphalt. With the increasing of pavement＇s thickness, the stress state and the life of pavement will be improved.

关 键 词：沥青混凝土桥面铺装 斜剪试验 有限元分析 剪应力 

分 类 号：U441.5[建筑科学—桥梁与隧道工程]