Prefabricated concrete frame structure with high-strength bottom bars
A prefabricated concrete and frame structure technology, applied in building construction, construction, etc., can solve the problems of inconspicuous application advantages of prefabricated frame structures, high precision machining requirements, inconvenient construction and construction, etc., so as to improve seismic capacity and reduce the amount of steel used for beams , Improve the effect of shear resistance
Active Publication Date: 2016-01-20
SOUTHEAST UNIV
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Problems solved by technology
At present, the prefabricated assembly frame structure system that can be put into use generally has problems such as high precision processing requirements, insufficient applicability, and inconvenient construction, which makes the application advantages of prefabricated assembly frame structure not obvious.
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[0017] The present invention will be further described below in conjunction with the accompanying drawings.
[0018] like figure 1 and 2 Shown: prefabricated beam with high-strength bottom reinforcement prefabricated concrete frame structure, U-shaped keyway 1 is set at both ends, and the stressed steel bar 2 at the bottom of the beam is made of 600MPa-grade heat-treated high-strength ribbed steel bar with a certain flexibility of 12mm, 14mm, and 16mm. The end protrudes and is bent upward to form a hook. The core beam frame vertical rib 3 is arranged on the upper part of the high-strength rib to form the core beam. It is arranged in the concrete protective layer between the stressed main rib at the bottom of the beam and the component skin to have a skin effect. Welded steel mesh 4 to improve the cracking of the middle part of the beam.
[0019] like image 3 and 4 Shown: the connection node of the precast concrete frame structure with high-strength bottom reinforcement. A...
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Abstract
The invention discloses a prefabricated concrete frame structure with high-strength bottom bars. The prefabricated concrete frame structure with the high-strength bottom bars comprises prefabricated concrete columns, prefabricated concrete beams, beam bottom stressed rebars, U-shaped key slots, core beam rack vertical bars, rectangular closed stirrups, core beams and beam top common rebars, wherein the U-shaped key slots are reserved in beam ends of the prefabricated concrete beams; the beam bottom stressed rebars are high-strength rebars; the core beam rack vertical bars are arranged in ranges of the U-shaped key slots above the beam bottom stressed rebars; the rectangular closed stirrups which surround the beam bottom stressed rebars are arranged in the U-shaped key slots through the core beam rack vertical bars so as to form the core beams; the beam bottom stressed rebars extend out of the beam end and are bent upwards to form hooks; and extension portions are bent laterally to avoid prefabricated concrete column main bars, and are anchored in a beam column connecting joint core region. The anti-seismic property of a prefabricated assembly frame structure is improved, universality of production of components and installation of field joints is improved, and the prefabricated concrete frame structure with the high-strength bottom bars conforms to a general trend of popularization and use of high-strength rebars.
Description
technical field [0001] The invention relates to a prefabricated concrete frame structure with high-strength bottom bars, belonging to the technical field of concrete frame structures in construction engineering. Background technique [0002] Prefabricated concrete structure can greatly improve the construction capacity and construction speed, save a lot of labor, ensure the construction quality, and help meet the requirements of "four festivals and one environmental protection". It has good development prospects in the context of green building and green construction. At present, the prefabricated assembly frame structure system that can be put into application generally has problems such as high precision processing requirements, insufficient applicability, and inconvenient construction, which makes the application advantages of prefabricated assembly frame structure not obvious. Contents of the invention [0003] The purpose of the present invention is to overcome the b...
Claims
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Login to View More IPC IPC(8): E04B1/19E04B1/58
Inventor 郭正兴管东芝刘家彬于建兵
Owner SOUTHEAST UNIV