The main beam support of the bridge erecting machine is the main load-bearing part of the bridge erecting machine,which bears the overall load of the crane.The use of reasonable bridge structure to reduce self-weight,its significance is not only to save the cost of steel,but also to reduce the load of highways and bridges,and then reduce the cost of basic engineering.This thesis proposes a method of improving the shape of the flange of the beam and designing a new metal beam to reduce the weight of the bridge.The relationship between the opening height and the corresponding stress and deformation is calculated by using the classical mechanical structure analysis method.The finite element method is used to analyze the structure of the hollow box beam,and the validity of the method is verified by comparing with the theoretical analysis.
Bridge erectorHollow box beamFinite element analysis
NETL
NSTL
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