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Prefabricated prestressed concrete stair

A concrete and prestressed technology, applied in the direction of stairs, stepped structures, buildings, etc., can solve the problems of the dead weight of the stairs, the height of the ribbed beam and the beam, and reduce the beam height, the dead weight, the deflection and the crack. Effect

Inactive Publication Date: 2018-07-27
EAST CHINA ARCHITECTURAL DESIGN & RES INST
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a prefabricated prestressed concrete staircase, which solves the technical problem that the ladder plate in the slab staircase has a large dead weight or the ribbed beam height in the beam staircase is high

Method used

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  • Prefabricated prestressed concrete stair
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Embodiment Construction

[0009] In order to better understand the above-mentioned technical solution of the present invention, a further detailed description will be given below in conjunction with the accompanying drawings and embodiments.

[0010] Such as figure 1 and figure 2 As shown, the prefabricated prestressed concrete stairs include stair treads 1, stair treads 2 and ribbed beams 3 under the stair treads 2, the stair treads 2 are composed of inclined ladder sections 4 and platform sections 5, and the ribbed beams 3 are equipped with prestressed rebar.

[0011] The ribbed beams 3 may be two symmetrically arranged, or one or more ribbed beams in the middle. It only needs to meet the load and force requirements of the stairs.

[0012] The combination of inclined ladder section 4 and platform section 5 is determined according to actual engineering, and the quantity is not limited. It can be freely combined by a plurality of inclined ladder segments 4 with different slopes and a plurality of ...

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Abstract

The invention belongs to the field of construction engineering and relates to a prefabricated prestressed concrete stair in prefabricated structure. The prefabricated prestressed concrete stair comprises stair steps, ladder slabs and ribbed beams under the ladder slabs, wherein the ladder slabs comprises inclined ladder segments and platform segments, and the ribbed beams are internally provided with prestressed steel bars. The technical problem that the self-weight of the ladder slabs in a plate-type stair is larger or the ribbed beams in a beam-type stair are higher is solved.

Description

technical field [0001] The invention relates to the field of construction engineering, in particular to a structural configuration of a prefabricated component. Background technique [0002] The common method of prefabricated concrete stairs in the prior art is a non-prestressed slab staircase or a non-prestressed beam staircase. The existing structure of the non-prestressed beam type staircase is that the ladder board is arranged on the ribbed beam, and the load is transmitted from the ladder board to the ribbed beam. However, in some buildings, due to the functional requirements of the building, the span of the stair plate needs to be large, resulting in a large deadweight of the stair plate in the slab staircase or a high height of the ribbed beam in the beam staircase, which affects the net height of the building and restricts the prefabricated staircase. Application in prefabricated buildings. Contents of the invention [0003] The technical problem to be solved by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04F11/02E04F11/022
CPCE04F11/02E04F11/022
Inventor 雷振海赵仕栋邱临宬
Owner EAST CHINA ARCHITECTURAL DESIGN & RES INST
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