壹定发

The main application of bridge steel structure is bridge engineering in the construction of transportation infrastructure such as highway, railway and urban viaduct. In recent years, with the increasing investment ♎of the state in the construction of transportation infrastructure, the market space of bridge steel structure is becoming wider and wider.

Hangxiao steel structure has undertaken a large number of bridge steel structure projects, such as Yongning Yellow River Bridge on Beijing Tibet expressway, dajiangou bridge in Haiyuan, Ningxia, Yinchuan Kongsi road viaduct, Xi'an Kunming Road viaduct, Dongguan x239 Changping Guangzhou Shenzhen railway bridge reconstruction project, Chongxian laoyuhang connecting line (viaduct) in Yuhang District, Shanxi Linfen viaduct, etc., contributing Hangxiao strength to the infrastructure development of the motherland. At the same time, Hangxiao steel structure actively responded to the call of the national the Belt and Road strategy, went abroad and undertook overseas bridge projects such as the tedo Churchill Roosevelt overpass

General construction process of bridge steel structure

Main technical features

●The steel materials for bridges are highly requ𝔍ired, which directly bear the wheel load, and ༺the fatigue problem is prominent

●Heavy welding workload and high te🥀chnical requiremenꦏts

●The steel structure of the bridge b🐭elongs to exposed steel members, and the anti-corrosion coating requirements are high

●High installation accuracy is required, and pre assembly and pre camber r✱equirements need to be considered

●Strict quality requirements

●Need a high level of technical support

Classic case

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  Dongguan x239 Changping Guangzhou Shenzhen railway ♈bridge

  The project is located at the intersection of Changping Avenue and Zhanqian West Road, Changping Town, Dongguan City.⛄ The total length of the bridge is 552m, which is divided into 19 spans. The bridge deck is 20m wide, with two-way four lanes. The span combination of the main bridge is 10+60+40m, which is a continuous steel box girder. Q345qc and q235qc are used in this project.

  
  

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  Tedo Churchill Roosevelt overpass

  The project is located in Trinidad and Tobago. The project is an overpass✃ across Churchill Roosevelt expressway, with a total span of 76m, which is designed and manufactured according to American stan🗹dards.

  
  

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  Yinchuan Yongning Yellow River Bridge

  The project is located in Yongning County, Yinchuan city. The left span of the connecting line of Yongning ꦓYellow River Bridge is 50m+65m+41m, and the right span is 41m+65m+50m. The left and right spans are arranged symmetrically. The superstructure adopts a continuous beam of steel-concrete composite structure. The main beam is 3.1m high and the bridge deck is 20.25m wide. The full section 𝕴is composed of three steel box girders.

  
  

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  Chongxian🍎 laoyuhang connecting line in Yuhan꧅g District (elevated)

  The project is located in Yuhang District, Hangzhou. Hangxiao steel structure undertakes 3 steel girder bridges and 7 steel plate composite girder bridges in the second working area. 𒁃Continuous box girder with bridge width of 26.5m, main span of 70m and 80m, and beam height of 3.2m, 2.3m to 3.6m; The main span is 60m, and ♓the other 40m or 50m are arranged in a single span.