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Hollow slab beam and preparation method thereof

A technology of hollow plate girders and beams, which is applied in the direction of bridges, manufacturing tools, bridge parts, etc., can solve the problems of reducing the height of slopes on both sides, achieve good overall mechanical performance, improve structural mechanical performance, and facilitate the installation of telescopic devices Effect

Active Publication Date: 2015-05-27
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the middle and small bridge projects across rivers, low-height beams are generally used to reduce the slope height on both sides, so prefabricated small box girders and T-beams have disadvantages

Method used

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  • Hollow slab beam and preparation method thereof
  • Hollow slab beam and preparation method thereof
  • Hollow slab beam and preparation method thereof

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Embodiment Construction

[0032] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

[0033] Such as Figure 3-Figure 6 A hollow slab girder is shown, comprising: a rectangular body 1, the rectangular body 1 includes an inner chamber 2 with variable cross-section; The end is provided with a crossbeam steel bar 3, the inner cavity 2 runs through the rectangular body 1, and is parallel to the length direction of the rectangular body 1; the prestressed steel beam 4 is arranged below the inner cavity 2, and It is located at the bottom of the rectangular body 1 and is parallel to the length direction of the rectangular body 1 .

[0034] The inner cavity 2 is molded by an inflatable capsule with variable cross-section; that is, the size of the end of the inner cavity 2 is smaller than the size of the middle part of the inner cavity. The thickness of the seat section web and the thickness of the top an...

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Abstract

The invention discloses a hollow slab beam. The hollow slab beam comprises a rectangular body, wherein the rectangular body comprises an inner cavity with a variable cross section; small cantilever steel bars are respectively arranged at two sides of the top part of the rectangular body in a stretching way; the end part of the rectangular body is provided with cross beam steel bars, and the inner cavity penetrates through the rectangular body and is parallel to the length direction of the rectangular body. According to the hollow slab beam disclosed by the invention, the hollow slab beam is molded by adopting a pre-tensioned pre-stressed manufacturing technology and a inflatable capsule inner die with the variable cross section, the hollow slab beam has the advantages of low structure height, high factorization degree, convenience in transporting and hoisting, high construction speed, low engineering manufacturing cost and the like, and meanwhile, the load bearing performance and the durability of the hollow slab beam are greatly increased.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a hollow slab girder and a preparation method thereof. Background technique [0002] The pre-tensioned prefabricated hollow slab (beam) has the characteristics of low structural height, high degree of industrialization, convenient transportation and hoisting, fast construction speed and low project cost. It is widely used in bridge engineering, especially in small and medium bridge projects across rivers. . [0003] Prefabricated hollow slabs (beams) in the prior art, such as figure 1 and figure 2 As shown, the horizontal connection between the beams is generally connected by hinge joints 1' (that is, hinged hollow slab beams), and there is no cross-beam connection between the beams, and the prefabricated beams are generally made of equal-section inflatable capsules 2'. [0004] Hinged hollow slab girders have poor lateral connection performance of the hinge joints...

Claims

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Application Information

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IPC IPC(8): E01D19/00
CPCB28B23/043E01D2/00E01D2101/28
Inventor 顾民杰马骉沈炯伟王萍
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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