Cable-stayed bridge steel box girder closure method and closure system

A technology for a steel box girder and a cable-stayed bridge is applied in the field of a steel box girder closing method and a closing system of a cable-stayed bridge, and can solve the problems such as the jamming of the closing opening, the uneven edges of the steel box girder, and the complicated procedures, and save the counterweight. time, the effect of reducing production requirements

Inactive Publication Date: 2020-01-03
CHINA RAILWAY BRIDGE SCI RES INST LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The matching and cutting process of steel box girders is relatively cumbersome, and the steel bo

Method used

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  • Cable-stayed bridge steel box girder closure method and closure system
  • Cable-stayed bridge steel box girder closure method and closure system
  • Cable-stayed bridge steel box girder closure method and closure system

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Embodiment Construction

[0052] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0053] see figure 1 As shown, the embodiment of the present invention provides a method for closing a steel box girder of a cable-stayed bridge, which includes the following steps:

[0054] Firstly, the steel box girder 1 of the closing section is prefabricated in the factory according to the measured temperature and the spacing of the closing section 2. To make the length of the steel box girder 1 of the closing section, it is only necessary to consider the size of the closing section 2 at a reference temperature of 15 degrees to ensure that the closing section The length of the steel box girder 1 should be made shorter than the length of the closing mouth 2 at the reference temperature, so that the steel box girder 1 of the closing section can be hoisted to the closing mouth 2 smoothly. The embodiment of the present invention does not need to...

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Abstract

The invention discloses a cable-stayed bridge steel box girder closure method and closure system. The cable-stayed bridge steel box girder closure method comprises the following steps of pushing and opening the width of a first steel box girder closure opening through a pushing device arranged on a first steel box girder, wherein the width of the closure opening is the sum of the width of a closure section steel box girder and the operation width; hoisting the closure section steel box girder to the closure opening; adjusting elevations and axes of the first steel box girder and a second steelbox girder at the two ends of the closure opening; aligning the first steel box girder and the second steel box girder with the two sides of the closure section steel box girder; adjusting a connecting line between the first steel box girder and the second steel box girder to be parallel to the longitudinal bridge direction; arranging the pushing device on the first steel box girder; calculatingand obtaining a first pushing force by using a preset algorithm; enabling the pushing device to apply the first pushing force to the first steel box girder and push the first steel box girder to movein the longitudinal bridge direction; and correspondingly welding the two ends of the closure steel box girder to the first steel box girder and the second steel box girder.

Description

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Claims

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Application Information

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Owner CHINA RAILWAY BRIDGE SCI RES INST LTD
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