Research On Application Technology Of Structure And Material Of Bridge Deck In Alpine Region

Bridge deck surfacing layer as the subsidiary structure, engineering design and construction of the road is still adhere to the traditional with asphalt mixture asphalt pavement, the current practice of asphalt pavement structure design code for design of combination mainly from materials, methods and thickness of the aspects such as guidance, no specific design theory and method, the pavement design, thus chapter surfacing to early damage, the impact of bridge structure performance.Based on the Inner Mongolia autonomous region in provincial channel metallocene strength geer super-large bridge deck pavement project based on linear elastic theory based on finite element software, the bridge, the vertical and horizontal stiffener and pavement is studied by numerical simulation, the different loads of surfacing of stress, strain and stress the pavement hermia, System analysis bridge deck pavement temperature stress, low shear stress, temperature shrinkage along the pavement thickness distribution regularity of direction, material parameters and structure parameters on the asphalt pavement performance, determine the influence law of the asphalt pavement bridge and lower level division of property of asphalt mixture surfacing layer, double laying upper pavement materials scheme optimum modulus ratio, Select 6 kinds of type of asphalt concrete mixing ratio on the gradation design and optimization, in conventional performance test of the fatigue test, low temperature and low shrinkage test in the line, the combination of the rutting test, the comprehensive evaluation based on different asphalt mixture design effect and the road performance, optimum proportion for the pavement, surfacing construction and quality control.This research studies for preparation of alpine region surfacing new materials, obtain excellent performance of the deck surfacing of the bridge deck pavement structure and improving performance, prolong service life surfacing has certain directive significance.