Post-tensioning external prestressed steel beam and pre-tensioning prestressed superposed beam combined building structure system and construction technology thereof

Abstract

The invention relates to a post-tensioning external prestressed steel beam and pre-tensioning prestressed superposed beam combined building structure system and a construction technology thereof. By adopting the post-tensioning external pre-stressed steel beam and pre-tensioning prestressed prefabricated superposed beam combined structure system in a large-space building, the high-strength steel bar replacement rate of the steel beam and the pre-stressed superposed beam can be improved, the bearing capacity of large-cross-section columns is fully exerted, the space of the building is increased and the construction cost is lower. Connecting pieces arranged on steel skeleton concrete columns can facilitate the erection of steel pipes, the steel beams and prefabricated beams, and the multilayer three-dimensional rapid construction and installation can be realized at the same time. The construction speed is fast and the labor is saved. Since the prefabricated beams with template supporting holes and connecting section steel are adopted, the hoisting of the prefabricated beams becomes more convenient, the supporting frames of floor slab templates are omitted, the construction speed is accelerated and the labor is saved.

Description

technical field [0001] The invention relates to a building structure system, in particular to a building structure system combining post-tensioning externally prestressed steel beams and pre-tensioning prestressed composite beams. In addition, the construction technology of the system is also provided. 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...

AI Technical Summary

Problems solved by technology

The construction process of concrete post-tensioned prestressed beams is complex, the beams have large cross-sections and heavy weight, and their use in earthquake areas is limited.

The disadvantage of the steel beam is that the beam height is high, the cost is high, and the lateral stability of the lower flange plate at the end of the steel beam is poor

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