Prefabricated hollow slab beam side formwork without performing roughing treatment

The technology of hollow slab beam and side formwork is applied in the field of prefabricated hollow slab girder side formwork, which can solve the problems of difficulty in guaranteeing the quality of surface chiseling, difficulty in artificial chiseling, and large chiseling area, so as to achieve simple and clear design ideas and shorten construction period. , to ensure the effect of construction quality

Inactive Publication Date: 2014-06-18
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the improvement of the strength level of hollow slab concrete, for example, C40 or C50 concrete is commonly used, it is very difficult to chisel manually, and the chiseled area is large. It is necessary to form a conc

Method used

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  • Prefabricated hollow slab beam side formwork without performing roughing treatment
  • Prefabricated hollow slab beam side formwork without performing roughing treatment
  • Prefabricated hollow slab beam side formwork without performing roughing treatment

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Embodiment Construction

[0024] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] Such as Figure 1 to Figure 5 As shown, the chisel-free prefabricated hollow slab beam side formwork of the present invention includes a steel side formwork 1 and steel strips 2 . The steel side formwork 1 changes according to the size of the prefabricated hollow slab 5; the steel strip 2 is welded to the steel strip arrangement area 3 inside the side formwork 1, and the steel strip arrangement area 3 is an approximately vertical section area on the side surface of the hollow plate beam, and should avoid Area 4 of the bent section of the hinged steel bar.

[0026] In the embodiment of the present invention, the steel strips 2 have a thickness of 6mm and a width of 30mm, and are arranged in groups of three in the steel strip arrangement area. Each set of spacing is selected according to the roughness requirements and arranged in para...

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Abstract

The invention discloses a prefabricated hollow slab beam side formwork without performing roughing treatment. The prefabricated hollow slab beam side formwork without performing roughing treatment comprises a steel-side formwork, a steel plate strip arrangement area which is arranged on the inner side of the steel-side formwork and a plurality of steel plate strips which are welded in the steel plate strip arrangement area, wherein the steel plate strips are arranged in parallel at intervals. The side formwork can form reserved grooves on the side surface of a hollow slab, so that the requirements on the shearing behaviors of hollow slab beam connection hinge joints can be met without performing manual roughing treatment on the surface of concrete during hollow slab beam connection.

Description

[0001] technical field [0002] The invention relates to a side formwork of a prefabricated hollow slab girder, in particular to a side formwork of a prefabricated hollow slab girder free from chiseling treatment. [0003] Background technique [0004] Prefabricated concrete hollow slab girder bridge is a bridge type widely used in bridge construction in our country. Since the pouring time of the hinge joint concrete of the prefabricated concrete hollow slab girder bridge is later than that of the hollow slab concrete, the bonding surface becomes the weak link of the hinge joint. Therefore, the main disease of this kind of hollow slab girder bridge occurs at the bonding surface of the new and old concrete in the hinge joint, which is manifested as cracking of the hinge joint concrete along the bonding surface. [0005] In the actual construction of hollow slab beams, manual roughening of the concrete side surface of hollow slabs is currently a common practice. Chiseling t...

Claims

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Application Information

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IPC IPC(8): B28B11/08
CPCB28B11/0818B28B11/089
Inventor 张娟秀叶见曙姚伟发
Owner SOUTHEAST UNIV
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