箱型简支梁桥铺装结构应力分析

Stress Analysis of Box Beam Bridge Pavement

箱型简支梁桥面铺装沥青混凝土层的破坏常表现为层间剪切破坏、起皮拥抱,纵横裂缝等。结合桥梁结构理论和路面设计的方法,用有限元方法建立箱型简支梁桥空间实体建模,对汽车荷载作用下的箱型简支梁桥铺装结构在跨中的层间剪应力、法向拉应力以及接触层间摩擦滑动等进行计算和分析。

The damage of box beam bridge pavement usually presents interlaminar shear failure,peeling hug,vertical and horizontal cracks,etc.This paper established box beam bridge system modeling in use of the finite element method,which based on bridges design theory and method of pavement design,and calculated and analyzed shear stress,normal tensile stress and frictional sliding between the contact layers in the span of box beam bridge pavement structure under the action of the automobile loading.