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Steel structure bridge construction specifications include the following:
2, the length and weight of the component should be combined with the reported installation scheme, lifting equipment, urban road transport conditions and conditions of use to determine to prevent excessive deformation of the component during transportation, installation and use.
3, structural details, especially important and complex connection parts, should be easy for maintenance personnel to use daily inspection, maintenance and testing equipment.
6, steel bridge durability design recommendations include: should take steel protection measures according to the anti-corrosion design; Components that are susceptible to corrosion, mechanical wear and fatigue should be designed to facilitate inspection, maintenance and replacement, and to provide access to maintenance and repair throughout the life of the component; For the parts that cannot be tested, the fatigue check calculation should be carried out, and a reasonable allowable corrosion thickness value should be set; Parts whose service life does not reach the designed life of the bridge shall be replaceable.
2, measurement lofting: determine the position and shape of the bridge, do a good job of marking and recording.
3, casing buried: in the hole position buried casing, casing should be buried firmly, and ensure that its top surface is in the same horizontal plane.
4, rig platform installation: set up a rig platform on the bridge position, the platform should be solid and reliable, able to withstand the weight of the rig and other equipment.
5, bored pile construction: according to the design requirements of the bored pile construction, to ensure that the diameter, length, perpendicularity of the pile meet the requirements.
6, cover beam, cap construction: cover beam, cap construction on the abutment, cover beam, cap to meet the design requirements, and firmly connected with the bored pile.
7, prefabricated beam plate construction: according to the design requirements of prefabricated beam plate, beam plate to meet the design requirements, and can be stable and reliable during installation.