The double-deck pavement of the long-span cable-stayed bridge was set as the research object, by setting the load position, load condition and reference point on the bridge deck, the parametric analysis of the elastic modulus, thickness and temperature of the pavement material was performed. Then Pavement structure parameters suitable for the bridge were get. The finite element software was used to simulate the pavement effect of the No. 1 bridge of Haidong Avenue under the actual load, which provided reasonable optimization measures for the construction method of large-span steel bridge deck pavement in high and cold areas.

In order to provide the reasonable optimization measures for the construction of long-span steel bridge deck pavement in the alpine area, the actual pavement effect under the real load is studied by simulation simulation with the finite element analysis software relying on the construction of the bridge deck of No.1 Bridge of Haidong Avenue, Ledu District, Haidong city. Through different load positions and loading methods, the control load loading points are determined, and the parameterized analysis is carried out for the elastic modulus, thickness and temperature difference of the pavement, and finally the structural parameters of the pavement suitable for the bridge are obtained; the experimental analysis results show that the theoretical calculation idea adopted is feasible, and the measured value is within the expected range. It can be seen that the construction optimization measures and suggestions are of great significance to the construction of steel bridge deck pavement in the high cold area.

Reinforced corrugated Steel retaining wall is a kind of retaining wall structure that can realize rapid construction. It has the characteristics of large strength, high rigidity, fast construction speed and small environmental disturbance. In this paper, the finite element model is established by using ABAQUS software. With the load of 80Kpa and 120Kpa at the top of the fill, the mechanical and deformation characteristics of the steel corrugated board are studied under the coupling of steel corrugated board and fill soil. The Horizontal deformation of corrugated panel and soil of different depths are analysed. Then the stability of the retaining wall structure are analysed. The research shows that the steel corrugated retaining wall presents a reverse “S” shape under the action of filling, the upper part presents an outward deformation, and the lower part presents an inward deformation extrusion soil; under the up load, the middle part of the retaining wall produces protrusions. As the load increases, the bulge increases with the tendency of the outward inclination. The stability analysis shows that the safety factor of the retaining wall structure under the load meets the requirements of relevant specifications.