Fully-fabricated stair system and fabrication method

Abstract

The invention discloses a fully-fabricated stair system and a fabrication method. The fully-fabricated stair system comprises a stair board, stair steps, a stair stringer, a platform board, a steel fastener and a stair armrest. A body of the stair board is of an oblique slab structure, lapping joints are arranged at the upper end and the lower end of the stair board, first grooves are formed in the outer edges of the upper surfaces of the lapping joints, second grooves are formed in one side of the platform board, the stair stringer is of an inverted T-shaped structure, third grooves are formed in the top surface of a web of the stair stringer, two flanges of the stair stringer are correspondingly and fixedly in lap joint with the stair board and the platform board, the first grooves, thethird grooves and the second grooves jointly form a steel fastener groove after lap joint, and the steel fastener is placed and fixed in the steel fastener groove. According to the fully-fabricated stair system and the fabrication method, based on the characteristic of constituting members of a stair, the constituting members are reasonably separated for factory fabrication, and the integrality and earthquake resistance of the stair are improved by adopting specially arranged construction measures.

Description

technical field [0001] The invention relates to an assembled staircase, in particular to a fully assembled staircase system and an assembly method. Background technique [0002] Compared with traditional cast-in-place reinforced concrete buildings, prefabricated buildings have the advantages of high component production quality and fast construction efficiency due to the factory production of components and the mechanization of on-site assembly of components, which will be the main trend of future building development. As an indispensable and important component of prefabricated buildings, prefabricated stairs are generally poured in the factory according to the method of pouring stairs in traditional buildings, and the stair slabs are poured together with the steps above to form a whole. The stair cast as a whole increases the self-weight of the entire stair because the stair slabs and steps are connected together, which puts forward higher requirements on the load of the s...

AI Technical Summary

Problems solved by technology

Due to the unevenness of the upper surface of the stairs due to the steps integrated with the pouring of the stair slab, after the stair components are poured, they can only be placed on the site in a single layer for maintenance and cannot be stacked up and down. On the one hand, the site for the maintenance of the stair components is increased. On the one hand, due to the limitation of the site, the production efficiency of the stair components is affected, which directly affects the economic benefits of the component factory.

Stairs are an important escape place when disasters such as earthquakes and fires occur. Many component factories only consider the connection between stairs and stair beams, platform slabs and stair beams when producing prefabricated stairs, and do not fully consider stairs and platforms. The integrity between the slab and the stair beam greatly weakens the safety performance and seismic performance of the staircase

In addition, the stair handrail is not considered and configured as one of the components of the prefabricated staircase, which is also a shortcoming of many manufacturers of prefabricated staircase components.

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