A construction method of steel-concrete composite beam

Abstract

The invention discloses a steel-concrete composite beam construction method. Reserved group nail holes are opened on the prefabricated reinforced concrete bridge deck, no steel bars are arranged in the reserved group nail holes, and when the prefabricated reinforced concrete bridge deck is installed on the steel beam , the group nails just enter the reserved group nail holes, place the reinforcement mesh into the reserved group nail holes, the group nails pass through the grid of the reinforcement mesh, and extend the reinforcement mesh and the prefabricated reinforced concrete bridge deck into the reserved The pre-embedded steel bars in the group nail holes are connected, and then concrete is poured into the reserved group nail holes. In the steel-concrete composite beam construction method of the present invention, no reinforcement is provided in the reserved group nail hole, which avoids the interference between the group nail and the pre-embedded steel bar. After the group nail enters the reserved group nail hole, the reserved group nail Set the reinforcement mesh in the hole, and then pour concrete into the reserved group nail holes to ensure the connection strength between the prefabricated reinforced concrete bridge deck and the steel beam.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method of a steel-concrete composite beam. Background technique [0002] Steel-concrete composite beam is a new type of structure developed on the basis of steel structure and concrete structure. It mainly sets shear connectors between the steel beam and the concrete flange plate to resist the lifting and relative sliding of the two at the interface, making them work together as a whole. In steel-concrete composite beams, in order to reduce the influence of concrete shrinkage on the bridge force, the method of prefabricating the reinforced concrete bridge deck and storing it for more than 6 months is usually used to allow the concrete bridge deck to shrink freely in the early stage, and then the bridge deck is installed on the steel bridge deck. on the beam. Before the bridge deck is installed on the steel girder, it is necessary to weld the welding...

AI Technical Summary

Problems solved by technology

Although the positions of the steel bars and welding studs in the bridge deck can be set on the drawings in the design stage, there will be errors in the actual manufacturing process in terms of the deviation of the welding stud position from the design and the deviation of the steel bar position from the design

During the actual bridge construction process, the installation of precast concrete bridge decks often has the dilemma of welding studs and steel bars conflicting and cannot be installed. Non-standard methods of cutting off steel bars and cutting off welding studs are often used, resulting in slow construction speed and poor construction quality. Reduce the strength and durability of the structure

[0004] Therefore, how to provide a prefabricated concrete bridge deck installation method to solve the problem that the position of welding studs and steel bars are prone to conflict has become an urgent problem to be solved by those skilled in the art.

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