Precamber Setting of Through Simply-supported Steel Truss Bridge
Steel truss beam bridge generally uses steel truss as the cross-section form of the main beam of the spatial structure.Its advantages are small self-weight,high stiffness,low steel consumption,industrial manufacturing,and fast assembly construction speed.Therefore,it is widely used in steel bridges.In the design and construction of steel truss bridges,setting precamber has become an important design and construction content to ensure linear smoothness and high passenger comfort when vehicles cross the bridges.Based on the construction project of 100 m steel truss bridge of Guojia Production Bridge in Xiaoqing River navigation restoration engineering,this paper expounds in detail the setting method of precamber of through simply-supported steel truss bridge,and analyzes the advantages and disadvantages of the setting method and the improvement direction for reference.
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