Ultra-thin Whitetopping Structure Optimization And Numerical Analysis

contrast, that meet the requirements of the use of the size and the thickness of the road.(6)Analysis of asphalt layer thickness on UTW road effects, proves our country existingasphalt layer thickness can meet the requirements of the use of UTW road; to reflectivecrack analysis, summarize the reflection crack occurrence regularity; analysis of asphaltelastic modulus size on UTW road effects, find the change rule.Through the finite element analysis of data, the main draw the followingconclusions:(1) UTW pavement plane size of1.8m×1.8m, the most reasonable,construction also more convenient.(2)9cm thick UTW pavement is more economical andreasonable board.(3) a layer of asphalt and concrete surface layer adhesive force of UTWpavement performance play a decisive role, void underneath slab when the tensile stress ismuch greater than the bottom plate continuous bending stress. Between successive layers,the most unfavorable loading position is longitudinal crack of slab edge middle; when theplate at the end of a hollow phenomenon, the most unfavorable loading position is platecorner.(4) the temperature stress on UTW pavement performance plays a role, can not beignored, and the load stress on effect of UTW.(5) with asphalt layer thickness increases,bottom plate bending stress is reduced gradually. And our country’s existing asphalt layerthickness can meet the requirements of the use of UTW pavement. With the asphalt elasticmodulus increased, UTW pavement performance improved.The results of this study, conduce to perfect UTW road design method, the referencedesign, in favor of Ultra-thin whitetopping technology promotion and development.