关键词: 道路工程, 复合式路面, 剪应力, 剪切角, 非线性优化

Abstract: The common disease of composite pavement is often in the form of interfacial shear slip damage．Firstly，typical cement concrete level layers，bonding layer，asphalt concrete top layer are selected as a whole layer．And then the compos． ite pavement interlayer maximum shear ，shear angle and the sensitivity for temperature，structure layer thickness，material modulus，driving load and SO on are calculated by using BISAR 3.0 program ．Results show that：the thickness of AC layer， the modulus of bonding layer，the traffic load have a significant effect on interlayer shear and shear angle．W hen the thick- ness of bonding layer changes from 6mm to 16mm，the interlayer maximum shear reduces by 48.85％ ，and shear angle re- duces by 11.29％ ．Meanwhile，the influence of the thickness of bonding layer on the inter-laminar shear stress and resist- anee pull force performance is analyzed compositely，which determ ines the reasonable thickness of adhesion is 3mm．Surf and fminsearch in MATLAB software are used as tools to draw 3D surface graph about interlayer shear，shear angle with the thickness of AC layer and the modulus of bonding layer；finally，non-linear optimization is carried out to fit out the function of the relationship among the above three．

Key words: road engineering, composite pavement, shear stress, shear angle, non-linear optimization