Full-prefabricated assembled concrete frame construction

Abstract

The invention discloses a whole precast prefabricated concrete frame structure, consisting of a precast pole and a horizontal beam that are mutually fixed. The precast pole is provided with an exserted level cantilever beam, the end of the exserted side of cantilever beam is provided with a gap; the end of the horizontal beam is provided with a boss that is matched with the gap arranged on the end of the cantilever beam; the horizontal beam and the cantilever beam are fixedly connected after the matching of the boss and the gap. The upper end, the lower end and the side of the cantilever beam ends are respectively provided with preburied metal plates, the upper end, the lower end and the side of the horizontal beam are also provided with preburied metal plates and the preburied metal plates arranged on the cantilever beam ends and the cantilever beam ends arranged on the horizontal beam are fixedly connected through a mental plate arranged on the top. Compared with the prior art, the invention has the advantages of reliable connection, reasonable structure, fast field construction, anti-seismic, etc.

Description

technical field [0001] The invention relates to the field of connection design and construction of prefabricated assembled concrete frame structures, in particular to the field of dry connection of fully prefabricated assembled concrete structures. Background technique [0002] At present, the beam-column joints in the prefabricated concrete frame structure are mostly wet joints. The usual practice is to directly connect the vertical columns and horizontal beams at the joints. Still uses a lot of support in . For the wet joints of prefabricated components, fundamentally speaking, it is still a continuation of the cast-in-place concrete structure, which does not reflect the advantages of fast construction speed and industrial production of prefabricated concrete structures. Commonly used fully prefabricated frame dry joints have problems such as complex structure, indirect force transmission, difficult construction, and high cost, such as steel hanger type connection, bolt c...

AI Technical Summary

Problems solved by technology

Commonly used fully prefabricated frame dry joints have problems such as complex structure, indirect force transmission, difficult construction, and high cost, such as steel hanger type connection, bolt connection, hybrid connection, damping connection, etc.

[0003] For general multi-storey fabricated prefabricated frame structures, the joint area is located at the end of the beam, and the beam and column are usually made in the form of rigid joints. However, since the joint is directly located on the side of the vertical column, this place is often the most unfavorable force-bearing section, which is easy to exceed The ultimate bearing capacity leads to damage; although the structure has good energy dissipation capacity, due to the relatively weak joint area, it is easier to be damaged than other parts of the beam, so the demand for the joint area is high, and the corresponding cost is increased, which is uneconomical

For example, the beam-column joining method of the bent frame structure of an ordinary single-story industrial factory building is as follows: first, the prefabricated beam is placed on the vertical prefabricated column head, and the joint is located on the upper surface of the column, and then anchored with embedded parts, bolts or reserved steel bars; This joint method prefabricated beams and prefabricated columns can rotate relatively freely, so the energy dissipation capacity is poor, which is not good for resisting impact loads or earthquakes

The beam-column joints of the prefabricated prestressed concrete structure usually need to apply prestress to connect the beam-column together by the friction force between the beam-column, and its energy dissipation performance is poor. Friction is prone to failure, and the setting of artificial plastic hinges is not considered

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