Building structure system combined with steel beam and pre-tensioned prestressing superposed beam and construction method for building structure system

Abstract

The invention discloses a building structure system combined with a steel beam and a pre-tensioned prestressing superposed beam. The building structure system comprises a floorslab, a prestressing superposed beam, a large-span steel beam for supporting the superposed beam, and columns connected with the steel beam and the superposed beam, wherein the superposed beam comprises a prestressing prefabricated primary beam and a prestressing prefabricated secondary beam; the primary beam is connected with two adjacent columns in a direction vertical to the steel beam; the end parts of the prefabricated secondary beam are fixed on the steel beam; the prestressing superposed beam comprises a beam body and a prestressing steel stranded wire which is buried in the beam body and used as a primary rib; and the end parts of the beam body are provided with channel steel which is suitable to be connected with an external structure. The H-shaped steel beam is a steel beam with axils at two ends; and in the beam span, when the beam depth is smaller, the flexibility of the large-span steel beam can be controlled effectively, so that the height of the middle part of the beam can be reduced and the layer height of a building can be reduced. Compared with the building structure system in which the common reinforced concrete beam is used as the large-span beam, the building structure system in which the steel beam is used as the large-span beam has the advantages that: the gravity of the primary beam is reduced, and the problems that the using amount of the large-span concrete primary beam is controlled by the flexibility, the strength of a steel bar cannot be developed fully, the quantity of ribs is large and the manufacturing cost is high can be solved.

Description

technical field [0001] The invention relates to a building structure system, in particular to a building structure system composed of beams, columns and plates, and a construction method for building the system. Background technique [0002] The main structure in the house construction in the prior art is generally a structural system consisting of columns, beams, and slabs, and the construction of the entire building can be completed by adding structures such as walls to the structural system. The frame structures composed of the above three mainly include cast-in-place reinforced concrete frame structures and prefabricated frame structures, among which prefabricated frame structures are mostly steel structures. Because the joints of prefabricated concrete structural members are complex in structure, and the amount of steel is also large, the integrity is poor. The integrity of the cast-in-place frame structure is good, but the erection and dismantling of formwork and supp...

AI Technical Summary

Problems solved by technology

But this kind of hollow prefabricated beam has complex manufacturing process, high cost, no reliable beam and column, beam and beam connection nodes, poor frame integrity and poor seismic performance

[0003] In the traditional prefabricated cast-in-place structural system, the main beam usually adopts precast concrete beam or cast-in-place beam, and the joint structure between the precast concrete main beam and the secondary beam is complex, the overall performance is poor, the seismic resistance is poor, and the joint cost is high

Especially when the span of the main girder is large, the section of the prefabricated beam is large and the beam is heavy, making it difficult to manufacture, hoist and transport, and difficult to implement

However, the construction technology of cast-in-place main girder and prefabricated secondary girder has many procedures and slow construction speed.

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