Construction method of sliding unlocking type temporary support for mounting prefabricated small box girder

A temporary support and construction method technology, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of large weight of small box girders, high requirements for the bearing capacity of temporary supports, and difficulty in dismantling temporary supports. Disassembly, solve the difficulty of dismantling, and produce convenient and fast effects

Inactive Publication Date: 2020-08-18
SHANGHAI NO 4 CONSTR
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the large weight of the small box girder, the requirements for the bearing capacity of the temporary support are relatively high, and it is difficult to remove the temporary support under the state of compression

Method used

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  • Construction method of sliding unlocking type temporary support for mounting prefabricated small box girder
  • Construction method of sliding unlocking type temporary support for mounting prefabricated small box girder
  • Construction method of sliding unlocking type temporary support for mounting prefabricated small box girder

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0033] Referring to 1-5, it is a schematic diagram of the construction steps of the sliding unlocking temporary support for the installation of a prefabricated small box girder in a preferred embodiment of the present invention. The construction steps are as follows:

[0034] Install Temporary Support 9: Refer to Figure 6 As shown, the first frame body 1 of the temporary support 9 is reversely stacked on the second frame body 2, that is, the first supporting surface 4 of the first frame body 1 is...

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Abstract

The invention provides a construction method of a sliding unlocking type temporary support for mounting a prefabricated small box girder. The method comprises the steps of reversely stacking a first frame body of a temporary support on a second frame body, a first supporting face of the first frame body is arranged upwards, placing a first inclined face of the first frame body on a second inclinedface of the second frame body, and then connecting the first inclined face and the second inclined face through a connecting component; then placing the temporary support on a pier top bent cap; hoisting the prefabricated small box girder to a temporary support, and constructing a cast-in-place end cross beam of the prefabricated small box girder; after the cast-in-place end cross beam is finished, unlocking the temporary support, dismounting a connecting part of the temporary support firstly, then applying a pushing force to one end of a first frame body of the temporary support, the first frame body slides and is dislocated relative to a second frame body, the height of the first frame body is decreased after sliding so that the first frame body can be disengaged from the small prefabricated box girder, and converting stress of the small prefabricated box girder into stress of the permanent support. The problem that the temporary support is difficult to detach after the small prefabricated box girder is installed is effectively solved.

Description

technical field [0001] The invention relates to the technical field of temporary support construction for the installation of prefabricated small box girders in the construction technology of prefabricated bridges, in particular to a construction method of a sliding unlocking type temporary support for the installation of prefabricated small box girders. Background technique [0002] With the promotion and popularization of prefabricated assembly technology in urban viaducts, a large number of bridge prefabricated components are used in bridge construction. The bridge prefabricated assembly construction technology cancels the cast-in-situ support concrete, shortens the construction period, and greatly reduces the occupation required for construction. The width of the land greatly reduces the impact on the existing traffic, and brings positive improvements to the site quality, safety, civilized construction, and social impact. [0003] Among them, the prefabricated small box ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D19/00E01D2/04
CPCE01D2/04E01D19/00E01D21/00
Inventor 郑晏华李申杰干华铭孙俊周君李晨辉姚艳曹佳雯张剑宇董少白王冬张锡霖王灏
Owner SHANGHAI NO 4 CONSTR
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