A kind of steel truss bridge and its manufacturing method

Abstract

The invention discloses a steel truss bridge and a method for fabricating the same. The steel truss bridge comprises a steel box girder bridge deck, a main truss composed of two steel trusses, and a steel portal frame. The steel truss comprises an upper chord member, a lower chord member, and a web member which is connected with the upper chord member and the lower chord member through bolts. A sidewalk bracket is arranged outside each steel truss. The lower chord member is connected to the steel box girder bridge deck and the sidewalk bracket, respectively. Besides, the two steel trusses are connected through the steel portal frame. During fabrication, all the sections of the steel trusses, the steel portal frame and the bridge deck are independently fabricated, respectively; all the sections of the upper and lower chord members of the steel truss are pre-assembled circularly with the corresponding web members, and all the sections of the steel box girder bridge deck are pre-assembled with the corresponding lower chord members by an orthotectonic method, respectively; and the steel portal frame is pre-assembled with the steel trusses. The steel truss bridge disclosed by the invention completely meets the design requirements so that the stability and safety factor of the bridge can be enhanced; and by employing the fabricating method, positioning is accurate so that the risks during the field assembling can be reduced; and the construction period can be shortened.

Description

technical field [0001] The invention relates to a bridge and a manufacturing method thereof, in particular to a steel truss bridge and a manufacturing method thereof. Background technique [0002] The Beijing-Hangzhou Canal is a golden waterway. The Wuxi segment is one of the busiest, highest cargo flow, and best shipping segments on the entire line. In 2010, the traffic volume of canal ships in Wuxi section reached 197 million tons, and the annual freight volume is equivalent to four or five single-track Shanghai-Nanjing Railways (Wuxi section), and five or six times the freight volume of Shanghai-Nanjing Expressway (Wuxi section), which has become a support for Wuxi's urban construction It is even the lifeline of the aquatic economy for the integrated development of the Yangtze River Delta. [0003] The Jinkui Bridge on Taihu Avenue in Wuxi City is located across the Wuxi section of the Beijing-Hangzhou Canal. Based on the particularity of this location, it is necessary ...

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Problems solved by technology

[0004] If the traditional assembly process is cumbersome, and it is difficult to guarantee the positioning accuracy during on-site assembly, if the traditional assembly process is far from meeting the requirements of the project cycle, and the workpiece needs to be hoisted up and down during the operation, then increased security risk

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