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Large-span continuous girder-span existing station rotation and closing construction method

An existing station, large-span technology, applied in bridges, bridge materials, bridge construction, etc., can solve the problems of heavy beam weight, tight construction period, and large swivel span.

Active Publication Date: 2018-01-30
NO 1 ENG LIMITED OF CR20G
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the station has a large swivel span, heavy girders, high risk, tight construction period, and difficult construction

Method used

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  • Large-span continuous girder-span existing station rotation and closing construction method
  • Large-span continuous girder-span existing station rotation and closing construction method
  • Large-span continuous girder-span existing station rotation and closing construction method

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Embodiment Construction

[0107] Such as figure 1 Shown is a long-span continuous beam spanning the existing station swivel and closing construction method, the long-span continuous beam constructed is a reinforced concrete box girder spanning the existing station; the front and rear ends of the long-span continuous beam are respectively supported on On the first pier and the fourth pier and the front and rear ends of the middle span are respectively supported on the second pier 1 and the third pier 2, the first pier, the second pier 1, the third pier 2 and the fourth pier are arranged from front to back along the longitudinal bridge direction of the large-span continuous beam being constructed, and they are all reinforced concrete pier, and the second pier 1 and the third pier 2 are respectively located at the Describe the left and right sides of the existing station; the mid-span of the long-span continuous girder constructed is divided into mid-span front side beam section 3-1, mid-span closing sect...

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Abstract

The invention discloses a swivel and closure construction method for a large-span continuous beam crossing an existing station. A constructed large-span continuous beam adopts a reinforced concrete box beam crossing the existing station and the front end and the rear end of a span are supported on a second buttress and a third buttress respectively; the swivel and closure construction process comprises steps as follows: step one, swivel system construction: a swivel system is constructed at the bottom of each of the second buttress and the third buttress and comprises a lower support disc, an upper rotating disc, a bridge swivel spherical hinge and a swivel traction system, multiple support legs are arranged at the bottom of the upper rotating disc, and an annular slide way allowing the support legs to slide is formed on a lower bearing platform; step two, construction of the second buttress and the third buttress; step three, construction of a front side beam body and a rear side beam body; step four, plane swivel construction; step five, side span closure construction; step six, mid-span closure construction. According to the method, the steps are simple, the design is reasonable, the construction is simple and convenient, the use effect is good, the swivel and closure construction process of the large-span continuous beam crossing the existing station can be completed simply, conveniently and rapidly, and the construction process is safe.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a large-span continuous girder-span existing station swivel and construction method. Background technique [0002] At present, China's railway construction is in a golden period, and a large number of passenger dedicated lines and intercity railways have started and put into use one after another. The special technical requirements of passenger dedicated lines make it impossible to use level crossings like ordinary railways. What followed was an increase in the construction of the passenger dedicated line across the existing main railway lines, railway stations, and highways. The construction period for crossing is long, which has a great impact on the operation of the business line and highlights potential safety hazards. [0003] The bridge swivel construction is to use the ball joint with a small friction coefficient, the slideway and the turntable str...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/08
CPCE01D21/08E01D2101/268
Inventor 吴信军石鸿江杜越秦青山聂树东王亚胜王军刚李龙吉
Owner NO 1 ENG LIMITED OF CR20G
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