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Assembly method of section box girder

A segment and box girder technology is applied in the field of simple support and then continuous box girder segment assembly technology, which can solve the problems of slow construction speed, large urban traffic impact and high construction cost, and achieves fast construction speed, small impact and low construction cost. Effect

Active Publication Date: 2010-03-31
CCCC THIRD HARBOR ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The assembly process used in domestic projects has disadvantages such as slow construction speed, great impact on urban traffic, and high cost.

Method used

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  • Assembly method of section box girder
  • Assembly method of section box girder
  • Assembly method of section box girder

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Experimental program
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Embodiment Construction

[0061] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0062]The assembling technique that the present invention relates to is specifically as figure 1 As shown, when it is implemented, it is realized through the following specific steps:

[0063] Step 1. Positioning of the head section box girder

[0064] Transport the prefabricated segmental box girder from the prefabricated yard or beam storage yard to the construction site by trailer, feed the beam from the rear (beam feeding from the front), and then lift the segment directly to the load-bearing steel girder of the bridge erecting machine by lifting equipment The adjustable support above the bracket is fixed, and the remaining segments of the first span are successively transported and hoisted, with an interval of about 10-20cm between each bl...

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PUM

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Abstract

The invention discloses an assembly method of a section box girder, which comprises the following steps: (1) swing installation of a front section; (2) accurate positioning of the front section; (3) positioning installation of a middle section; (4) glue assembly of the section box girder; (5) temporary prestress tensioning; (6) permanent prestress tensioning of a simple span web bundle; (7) simplespan data acquisition and box girder line shape adjustment; (8) pipeline mudjacking; (9) spanning of a bridge girder erection machine; and (10) wet junction construction. The section assembly methodhas the obvious advantages of fast construction speed, little influence to city traffic, low cost, beautiful bridge line shape and the like, and is suitable to urban bridge construction. The assemblymethod is novel and has wide application prospects.

Description

Technical field: [0001] The invention mainly relates to the construction technology of viaduct bridges, in particular to a simply supported and then continuous box girder section assembling process. Background technique: [0002] The construction technology of prefabricated segmental assembled reinforced concrete box girder first appeared in Europe and America in the last century. It was introduced to Hong Kong for the first time in the 1980s. Since the 1990s, most of the bridges in Hong Kong have adopted prefabricated segmental assembly construction technology, and the structural types have shown a trend of complexity and diversification. Due to the good economic benefits and aesthetic effects of this construction technology, it has gradually been extended to all parts of the world. In 2000, Thailand spent 1 billion U.S. dollars to build the Bang Na Bridge with a total length of 55km. It is the largest bridge built by span-by-span prefabricated segment assembly constructi...

Claims

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Application Information

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IPC IPC(8): E01D21/00E01D2/04E01D101/28
Inventor 陈武高国庆陈加庆陈孔小
Owner CCCC THIRD HARBOR ENG
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