Truss girder, combination beam using truss girders and combination floor system using truss girders

Abstract

The invention discloses a truss girder, a combination beam using truss girders and a combination floor system using truss girders. The truss girder comprises a lower chord plate, an upper chord member located above the lower chord plate and a connecting web member connecting the upper chord member with the lower chord plate. The combination beam is composed of the truss beams and concrete, and the steel and concrete combination beam is formed through construction. The combination floor system comprises main frame beams, truss beams, a plurality of light plate bottom molds and concrete floors, wherein the truss beams are supported on the main frame beams through lower chord plates, the light plate bottom molds are located between the truss beams, and the concrete floors are located on the light plate bottom molds. The whole floor system construction process does not need supporting, and the truss beams are used for bearing construction loads. The truss beams and the concrete are combined into the steel structure-concrete combined beam which is hidden in the floor system to serve as a hidden ribbed beam and bear the loads in the use stage. The combination floor system has the advantages of being low in cost, high in speed, excellent in heat preservation and noise isolation performance, light, high in strength, environmentally friendly, convenient to industrialize and the like.

Description

technical field [0001] The invention relates to the field of building structures, in particular to a truss beam, a composite beam using the truss beam and a composite floor using the truss beam. Background technique [0002] At present, in the field of application of floor technology in building structures, the main types of floors include cast-in-place concrete slabs, prefabricated concrete slabs, laminated slabs, and profiled steel plate concrete composite slabs. [0003] Among them, the cast-in-place concrete slab has the advantages of good integrity, high rigidity, and low cost, but it needs to carry out cumbersome and complicated on-site temporary formwork engineering (the on-site temporary formwork engineering refers to the vertical support column frame before the concrete slab is poured, and the vertical Lay beam brackets and wooden formwork on the support column frame), the construction speed is slow, the cycle is long, and it is difficult to realize industrialized p...

AI Technical Summary

Problems solved by technology

[0003] Among them, the cast-in-place concrete slab has the advantages of good integrity, high rigidity, and low cost, but it needs to carry out cumbersome and complicated on-site temporary formwork engineering (the on-site temporary formwork engineering refers to the vertical support column frame before the concrete slab is poured, and the vertical Lay beam brackets and wooden formwork on the supporting column frame), the construction speed is slow, the cycle is long, and it is difficult to realize industrial production, etc.

[0004] Although the construction speed of concrete prefabricated slabs is fast and most formwork supports can be eliminated, the disadvantages are that the floor slabs are poor in integrity, and one-way stress is easy to produce cracks, which is not suitable for areas with high seismic intensity. In addition, its impermeability also poor

[0005] Although the construction speed of the profiled steel plate concrete composite floor is fast and the overall rigidity is good, the cost is high. It has the disadvantages of unequal two-way rigidity in the plane and uneven bottom surface of the floor, and the bottom of the floor is uneven, which requires ceiling treatment

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