Abstract：Research purposes：There are many factors to affect the calculations of camber, because long-span steeltruss continuous girder has a complex structure and high camber. In this paper, the camber curve of steel truss continuous bridge with a complex truss and high camber is solved quickly and accurately through setting up the mathematical model with nonlinear programming theory and MATLAB software to provide the reference to achieving the camber curve of large-sized steel truss continuous bridge .
Research conclusions： Temperature algorithm should be used to solve the camber of steel truss continuous bridge in order to achieve the structure camber curve. The optimized object can be made clear , the constrain t equations can be flexible and the structure camber curve can be got easily and quickly with the theory of non linear programming . It’s a common method to solve the camber curve of girder. With this method, it only needs changing the length of upper chord, so the design work can be much simplified.
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2010, Vol. 27 
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