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Symmetrical suspension splicing bridge support seat end pseudo-suspension splicing construction method

A bridge bearing and construction method technology, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of time-consuming construction, large land occupation, and large traffic impact on the lower part, and achieve the effect of reducing the impact.

Active Publication Date: 2014-06-18
CHINA RAILWAY 11TH BUREAU GRP +1
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Problems solved by technology

However, this method occupies a large area and has a great impact on the lower traffic, and the risk of high altitude is high, and the construction is time-consuming

Method used

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  • Symmetrical suspension splicing bridge support seat end pseudo-suspension splicing construction method
  • Symmetrical suspension splicing bridge support seat end pseudo-suspension splicing construction method
  • Symmetrical suspension splicing bridge support seat end pseudo-suspension splicing construction method

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Embodiment Construction

[0024] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

[0025] Please refer to Figure 2-5 , the false cantilever construction method of the symmetrical cantilevered bridge bearing end of the present invention comprises the following steps:

[0026] Step 1. Use a crane, bridge erecting machine or other equipment to hoist the two support segment beams 3 onto the cover beam 2 with a convex support end, and the cover beam 2 with a convex support end is installed on the pier column 1 superior. A temporary support 5 is installed between the cap beam 2 with a convex support end and the support segment beam 3 to bear the vertical force and adjust the position of the support segment beam 3 and the ordinary segment beam 4 (such as figure 2 shown).

[0027] Step 2. Install the top gasket 6 and the bottom gasket 7 between the support segment beam 3 and the upper an...

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Abstract

The invention provides a symmetrical suspension splicing bridge support seat end pseudo-suspension splicing construction method. The method aims at a convex support seat end construction pseudo-suspension splicing structure. Two support seat section end beams are subjected to opposite pulling and prestress by temporary prestress beams and temporary prestress rebars, so the certain number of section beams arranged at two sides and corresponding to respective suspension splicing structures are born. As the temporary prestress structures are adopted to transmit the internal forces such as bending moment and pressure in the cantilever splicing to a cover beam, the possibility of the support seat end cantilever construction is realized; after the pseudo-suspension splicing structure is constructed, common suspension beams can be sequentially spliced according to the cantilever splicing method, the effect of a support method is reduced without the support turnover time and the influence on the lower transportation is reduced.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a pseudo-cantilever construction method at the bearing end of a symmetrical cantilevered bridge. Background technique [0002] Bridge segment prefabrication construction has the advantages of less site occupation, fast construction speed, high precision, easy quality control, and reduced on-site adjustment time. Especially in crowded urban areas, its component and factory characteristics are best reflected. Segmental beams can be assembled in the way of whole hole assembly and symmetrical cantilever assembly. Among them, symmetrical cantilever assembly is a better method of segmental assembly due to the small number of segments lifted each time and the bridge erecting machine is relatively simple. kind. [0003] For multi-link bridges, the bearings cannot be loaded before the bridge is completed, especially for convex bearing ends (such as figure 1 As shown), there ...

Claims

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Application Information

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IPC IPC(8): E01D21/10
Inventor 王鹏李小红崔力波杨兵张旭东唐达昆胡小银杨滢涛
Owner CHINA RAILWAY 11TH BUREAU GRP
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