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Large-width cast-in-place box girder and construction method thereof

A technology of box girder construction and large width, which is applied in the direction of bridges, bridge parts, bridge construction, etc., can solve the problems that cannot meet the needs of box girder construction progress and construction cost, complex formwork support and disassembly, and large engineering quantity. Achieve the effect of shortening the construction period, simplifying the construction process and reasonable structure

Pending Publication Date: 2022-03-04
杭州萧山交通建设管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, compared with the traditional box girder construction, the current large-width cast-in-place box girder construction is more complicated to support and disassemble the formwork, and the project volume is larger and the construction period is longer.
Therefore, in the context of today's large-width cast-in-place box girder construction projects, the existing box girder formwork casting methods cannot meet the needs of the box girder construction schedule and construction cost

Method used

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  • Large-width cast-in-place box girder and construction method thereof
  • Large-width cast-in-place box girder and construction method thereof
  • Large-width cast-in-place box girder and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as Figure 9 As shown, the large-width cast-in-place box girder construction method includes the following steps:

[0041] S000, please refer to figure 1 First, leveling, rolling, etc. are carried out within the scope of the construction site where the support 6 needs to be erected, and then the poured reinforced concrete strip foundation is used as the support foundation 7, and the support foundation 7 is poured on the design position of the construction site. The steel pipe support 6 is bolted on the pre-embedded steel plate, and the crossbeam 5 is bolted on the top of the support 6, and finally the distribution beam 4 is arranged and installed on the crossbeam 5;

[0042] in Figure 9 A simplified flowchart is shown in .

[0043] S100, laying and installing the bottom form 14 on the distribution beam 4, and pre-pressing all the supports 6, and then adjusting the elevation of the bottom form 14 to meet the design requirements;

[0044] S200, installing the ri...

Embodiment 2

[0056] see Figure 8 , the large-width cast-in-place box girder is constructed by the above-mentioned large-width cast-in-place box girder construction method. The large-width cast-in-place box girder manufactured by the construction method of the present application has the advantages of short construction period, higher strength and simple process. figure 1 The cap beam 15 and buttress 16 in the bridge are a part of the bridge.

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Abstract

The invention relates to a large-width cast-in-place box girder and a construction method thereof, and the scheme comprises the following steps: construction preparation, bracket installation, bottom die installation, bracket prepressing adjustment of bottom die elevation, side surface installation, bottom plate steel bar and web steel bar binding, bottom plate pouring, top template installation, and top plate steel bar binding. And the construction of the large-width cast-in-place box girder is completed through top plate and web plate pouring. The construction method has the advantages of being reasonable in structure, high in construction efficiency and capable of saving labor and construction period.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a large-width cast-in-place box girder and a construction method thereof. Background technique [0002] In recent years, the domestic economy has developed rapidly, people's living standards have improved, the number of motor vehicles has increased sharply, and urban traffic has become increasingly tense. In order to improve road capacity and reduce land occupation, overpasses and viaducts are widely used in urban road design. With the rapid development of bridge construction, the construction technology of box girder is basically mature and has entered the standardized construction technology. Among them, large-width box girders are becoming more and more common in bridge construction. [0003] However, compared with the traditional box girder construction, the current large-width cast-in-place box girder construction is more complicated to support and disassem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D2/04E01D21/00E01D19/00
CPCE01D2/04E01D21/00E01D19/00
Inventor 秦君彪许柯尧龚铁峰
Owner 杭州萧山交通建设管理有限公司
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