Construction method of structural steel cast-in-place slab reinforced concrete superposed beam

Abstract

The invention relates to a construction method of a structural steel cast-in-place slab reinforced concrete superposed beam. The construction method comprises the following steps: preparing for construction; field intersection traffic organization optimization is carried out; erecting a temporary support system; transporting and hoisting steel beams; construction of a self-supporting protection system hung below the intersection; welding and coating a steel beam on site, and dismantling a bracket upright post; and constructing the self-supporting formwork system. The steel beam transportation jig frame has the beneficial effects that the shaped stable steel beam transportation jig frame is adopted in the steel beam section transportation process, the steel beam entering efficiency is effectively improved, and the steel beam entering quality is guaranteed; the method is suitable for steel-concrete superposed beam operation, and is particularly suitable for composite beam engineering construction of an overpass crossing road section; according to the structural steel cast-in-place slab reinforced concrete superposed beam, the problems of construction efficiency and construction safety of the grade crossing are solved, the entering quality of the steel beam is effectively guaranteed, the support cost of the cast-in-place slab is reduced, and the technical benefit is remarkable.

Description

technical field [0001] The invention belongs to the field of highway engineering, and in particular relates to a construction method of a cast-in-situ plate-steel composite beam of profile steel. Background technique [0002] The steel composite composite beam in the bridge structure, also known as the composite beam, refers to the bridge structure form in which the concrete bridge deck and the steel main beam are connected by shear connectors to form an overall stress structure. Compared with concrete bridges or steel bridges, the use of composite beams can effectively reduce the section height, improve the structural rigidity and reduce the deflection of the structure under live loads; at the same time, composite beam bridges are convenient for factory production, high quality on-site installation, and construction costs. It is low-cost and fast. After completion, it can reduce noise pollution and protect the living environment of the city. Its technical and social benefits...

AI Technical Summary

Problems solved by technology

[0004]Although the development of composite beams in our country has advanced by leaps and bounds, better construction organization design and traffic organization optimization are constantly emerging, and various formwork support design and calculation theories have also been carried out. However, there is still room for improvement in the construction of steel-concrete composite beams at level crossings

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