Simulation and Optimization of Expanding Device of an Assembled Steel Bridge Based on VirtualPrototyping Technology

doi:10.3969/j.issn.1000-1093.2015.11.023

Abstract

Abstract: To improve the working capability of the bridge expanding device during the bridging and withdrawing process of an assembled steel bridge, the parameterized models of the bridge expanding device and bridge sections are established based on the virtual prototyping technology, and 4 key design variables which have significant effects on the performance of the expanding device are chosen and verified. The optimization design of the device is further carried out by the limit loads of hydraulic cylinders being selected as the optimization target. It is found that , when the bridge expanding device is increased by 9.19% in size according to the optimization project, the maximum loads of its linkage rods can be effectively reduced by 28.6%, and the stress states of the key rods are improved, then the overall performance of the assembled steel bridge expanding device is significantly improved.

Key words: engineering mechanics, assembled steel bridge, bridge expanding device, virtual prototyping technology, optimization design

CLC Number:

TP391.9

ZENG Fan-qi， WANG Qiang， HE Xiao-hui. Simulation and Optimization of Expanding Device of an Assembled Steel Bridge Based on VirtualPrototyping Technology[J]. Acta Armamentarii, 2015, 36(11): 2173-2179.

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