Construction method for one-time turning of large-span T-shaped single pier

A construction method and swivel technology, applied in the field of swivel construction of T-structure bridges, can solve the problems of not being able to be in place at one time, unable to work at high altitudes, and slow construction progress, and achieve the effect of ensuring construction quality, reducing construction procedures, and improving construction progress.

Inactive Publication Date: 2013-12-11
3TH ENG CO LTD OF CHINA RAILWAY CONSTR 11TH BUREAU GRP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The advantage of this method is that the length of the cantilever can be reduced by half when the span of the beam section is large; the disadvantage is that it needs to be closed and constructed above the obstacle that is crossed, which cannot be completed at one time, and construction sites need to be set up on both sides of the crossed obstacle.
[0003] Although the bridge swivel construction plays a vital role in crossing obstacles under special

Method used

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  • Construction method for one-time turning of large-span T-shaped single pier
  • Construction method for one-time turning of large-span T-shaped single pier
  • Construction method for one-time turning of large-span T-shaped single pier

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Embodiment Construction

[0026] Such as figure 1 As shown, the construction method of one-time rotation of a large-span T-structure single pier is to carry out the construction and pouring of the swivel cap on the side that needs to cross the line obstacle or special section, install the swivel spherical joint 3 on the swivel cap, and then The beam sections are cast in-situ in large sections, and the beam sections are connected through wet joint construction to form a T-structure main beam 1 with a complete cantilever length. Temporary piers 6 are used to support both ends of the T-structure main beam 1 to prevent downward deflection. The control of the swivel traction system by the girder and synchronous control system realizes the balanced swivel of the main girder 1 of the T structure, and finally installs the support, pours the supporting pad stone 13, and completes the construction of the whole bridge. pass figure 1 The centerline 4 of the beam section before the rotation, the centerline 5 of th...

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Abstract

The invention discloses a construction method for one-time turning of a large-span T-shaped single pier. The construction method is characterized in that the T-shaped main beam turns to a place at a time, the two ends of the turned T-shaped main beam directly fall to side pier supports, closure sections are not arranged, a jack is adopted to jack the beam twice for construction operation in the turning process, closure construction conducted above a spanned obstacle is avoided, schedule of construction is improved, construction processes are decreased, mutual interference among the processes is greatly reduced, and construction quality is ensured. Construction of all main beams can be conducted through one side of a special section, one-time turning to the place is achieved, and a new construction method and experience are provided for turning construction of bridges.

Description

technical field [0001] The invention relates to a T-structure bridge swivel construction method, in particular to a construction method for one-time swivel construction of a single pier of a large-span, large-tonnage cast-in-place T-structure bridge under complex terrain conditions. Background technique [0002] With the development of urban rapid transportation, elevated rail transit is becoming more and more common. At present, the construction techniques of cast-in-place prestressed box girders spanning existing roads are relatively mature, including support method, cantilever casting method and swivel method. The swivel method is a relatively common construction method for cast-in-place prestressed box girders to span railways and other traffic arteries in recent years. The two sides of the obstacle are constructed with suspended or cast-in-place beam sections to form the lower and upper structures of the bridge. During the construction of the cap, the swivel spherical h...

Claims

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Application Information

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IPC IPC(8): E01D21/08
Inventor 宁继康张军林代华伟姜攀刘育鸿
Owner 3TH ENG CO LTD OF CHINA RAILWAY CONSTR 11TH BUREAU GRP
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