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Construction method for integral hoisting and closure of large-section steel box girder

A construction method and overall hoisting technology, which is applied to bridges, bridge parts, bridge materials, etc., can solve the problems of long construction period and many processes, and achieve the effect of precise and fast closing

Active Publication Date: 2021-08-06
THE THIRD CONSTR CO LTD OF CHINA CONSTR THIRD ENG BUREAU
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  • Abstract
  • Description
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Problems solved by technology

[0004] In view of the above problems, the purpose of the present invention is to provide a construction method for the overall hoisting and closing of large-segment steel box girders, aiming to solve the technical problems of long construction period and many processes in the existing method of steel girder closing with reserved sill repair sections

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  • Construction method for integral hoisting and closure of large-section steel box girder
  • Construction method for integral hoisting and closure of large-section steel box girder
  • Construction method for integral hoisting and closure of large-section steel box girder

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0036] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0037] The construction method for the overall hoisting and closing of large-segment steel box girders provided by the embodiments of the present invention includes the following steps:

[0038] Step S1, construct the cantilever beam of the closing dragon span, and reserve the opening of the closing dragon as a figure-eight.

[0039] During specific construction, such as figure 1 Shown, at first adopt hanging basket 8 to carry out the concrete main body 21 construction...

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Abstract

The invention is applicable to the field of construction of superstructures of overwater bridges, and provides a construction method for integral hoisting and closure of a large-section steel box girder. The closure size of the steel box girder can be obtained according to actual measurement data and theoretical calculation of a closure gap, the surplus length of the large-section steel box girder is cut off in advance in a processing factory, after being transported to the site, the steel box girder is integrally lifted to the closure gap at a time through a bridge deck girder erection crane, after accurate alignment is conducted, temporary locking is conducted firstly, then welding seam welding of the closure gap is conducted, and closure is rapidly achieved. Therefore, when the large-section steel box girder is closed, a ridge filling section does not need to be reserved, accurate machining can be conducted in a machining factory according to the size, the steel box girder can be lifted and installed after being transported to the site, and accurate and rapid closing is achieved.

Description

technical field [0001] The invention belongs to the technical field of bridge superstructure construction over water, and in particular relates to a construction method for overall hoisting and closing of large-segment steel box girders. Background technique [0002] Usually, the closing of large-segment steel box girders is carried out with the reserved sill section, that is, the fabricated length of the steel box girder is shorter than the theoretical length (about 0.5m is reserved), and one end of the steel box girder is first connected with the closing mouth after entering the closing mouth. One end is connected, and the other end of the steel box girder is temporarily connected to the other end of the closing hole. The steel plate is cut according to the actual measurement data of the on-site repair section, and then the steel plate and the steel box girder are carried out within the scope of the repair section. Welding and forming a whole, so as to realize the integrat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D19/00E01D2/04G06F30/13G06F30/17G06F30/20E01D101/30G06F119/14
CPCE01D21/00E01D19/00E01D2/04G06F30/13G06F30/17G06F30/20E01D2101/30G06F2119/14Y02E10/20E01D21/10
Inventor 饶方平刘爱莲王平柳家勇申捷董传洲徐振
Owner THE THIRD CONSTR CO LTD OF CHINA CONSTR THIRD ENG BUREAU
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