Papers by Author: Jun Wang

Abstract: with the continuous development of bridge engineering，the massive concrete has been widely used in large-scale bridge foundation engineering. But it often has the problems of crack and deformation, which infuenced the entirety and durability of the whole structure seriously. In this paper, a hydration heat analysis of the platform of a corrugated steel webs bridge is carried out by using MIDAS/Civil structure finite element method analysis program, the analysis summarizes the temperature distribution regulation of platform concrete influenced by hydration heat and the temperature changing regulation affected by time. Meanwhile, some countermeasures of preventing the crack of concrete are put forward.

Abstract: According to the design specifications and structure theories of prestressed steel-concrete composite box girder, a mathematical model of optimization of cross-section of prestressed steel-concrete composite box girder was established. The nonlinear constrained optimization was adopted and the computer program was compiled with Matlab language. The efficiency optimization was achieved in the optimization design of the two different span bridge cross-section of a simply supported steel-concrete composite box girder. Numerical result illustrated that the optimization mathematical model of optimization was exact and the algorithm effective.