Assembling type plate-beam connecting joint and construction method thereof

Abstract

The invention discloses an assembling type plate-beam connecting joint and a construction method thereof. The joint comprises a dense rib box type composite floors and a superposed beam which are preformed by concrete. Each dense rib box type composite floor is provided with a die shell, a truss rib, a floor rib beam stirrup, a floor extending-out bending steel rib and a floor extending-out flange. The superposed beam is provided with a superposed beam horizontal reserved rib and a superposed beam longitudinal reserved rib. When the dense rib box type composite floors on the left side and the right side of the beam are placed in position and supported, the longitudinal-horizontal steel ribs of a joint zone are bound, finally later-placing concrete is placed, and construction of the plate-beam connecting joint is completed. The joint can be widely used in an assembling integral type structure of large space, and wide engineering application prospect is achieved. The assembling type plate-beam connecting joint has the advantages that an outer stand face is smooth and attractive, joint integrity is good, anti-seismic property is good, the technology is simple, construction is convenient, and manufacturing cost is not obviously improved.

Description

technical field [0001] The invention relates to the technical field of prefabricated assembled concrete structural components, in particular to an assembled plate-beam connection node and a construction method thereof. It can be widely used in large-span assembled monolithic structures with large spans and high load-carrying capacity, using new dense-ribbed box-type composite floor slabs, and has broad engineering application prospects. Assembly monolithic structure with large space. Background technique [0002] Construction industrialization is the development direction of my country's construction industry (Ministry of Construction [1995] No. 188 Document "The Development of Construction Industrialization Just Started"). At present, the ideal systems that can promote the sound and rapid development of construction industrialization include the precast concrete (Precast Concrete) system and the SI system (SI system, that is, the construction system in which the structural...

AI Technical Summary

Problems solved by technology

On the one hand, the relevant codes and regulations of prefabricated concrete structures published in various places in my country mostly use laminated floor slabs. The laminated floor has the advantages of saving formwork, good integrity, and superior seismic performance, but the disadvantages of laminated floors are also very large. Obviously, for example, the span of the floor is generally strictly limited, and it is not suitable for floor structures with large bays and large depths, so it is obviously not applicable to the new large-space PCSI system

[0007] On the other hand, ordinary prefabricated prestressed slabs are easy to manufacture and fast in construction, but they have the disadvantages of poor bearing capacity and small span. More importantly, the floor using ordinary prefabricated prestressed slabs has the disadvantage of poor integrity, and the earthquake effect Under the environment, floor slabs are prone to falling and collapsing, which will cause great harm to the lives and property of the people. This has been fully confirmed in the Wenchuan Earthquake and Lushan Earthquake.

[0008] On the other hand, when the traditional beam-slab system cannot meet the span and floor clearance requirements, although the cast-in-place densely ribbed box-type composite hollow floor system can meet the structural requirements of large spans and large bays, due to its construction Therefore, there are still disadvantages such as large amount of concrete pouring on site, slow construction speed, and high labor intensity of workers. Moreover, it is difficult to guarantee the quality of concrete vibration during high-altitude construction, resulting in frequent cracks on the floor, which affects the normal use of the structure.

Therefore, the industrialization level of this kind of hollow floor is low, which does not conform to the current trend of building industrialization

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