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Construction method of balance force system high-altitude crossbeam bracket

A construction method and balance force technology, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as failure to ensure that the deformation of the main tower meets the specification requirements, and achieve the goal of reducing construction costs, speeding up construction progress, and fast construction progress Effect

Inactive Publication Date: 2017-10-03
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP OF THE FIFTH ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional bracket adopts steel structure to strengthen the stability of the structure. Due to the asymmetric deformation of the main tower under the action of temperature, the deformation of the main tower in the direction of the center line of the line under the action of the cable force of the tower column, and the construction load of each construction Under the circumstances, the main tower is deformed due to the thrust of the bracket to the outside of the line. The above three forces are different in the test piece and direction, which cannot guarantee that the deformation of the main tower meets the requirements of the specification, and the reaction force generated by the main tower will affect the beam. The safety and stability of the bracket

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment is further optimized on the basis of the above-mentioned embodiments. The balance force system overhead beam bracket construction method is suitable for the construction of supporting structures such as upper beams and cap beams of double towers or double pier columns, and specifically includes the following construction steps:

[0043] Step S1: Cross beam bracket processing and embedded parts production. The beam bracket includes a main beam, an oblique brace connected to the main tower with a through-edge fulcrum, a distribution beam, and a bottom mold system installed on the distribution beam. The bottom mold system includes an upper side fulcrum, a lower side fulcrum, diagonal bracing, a connecting system, a cushion block, a distribution beam, a Bailey beam, a variable section bent frame and a bottom template.

[0044] Step S2: Installation of construction platform and lifting hanger.

[0045] Step S3: After the installation of the construction platform is...

Embodiment 2

[0067] This embodiment is further optimized on the basis of the above embodiment, and the step S1 specifically includes the following construction steps:

[0068] Step S11: the design and arrangement of the balance force system bracket. Set cross brace on the tower column. After the horizontal support is hoisted, a jack for the horizontal support and pushing operation is set up. Install the twisted pair on the top of the cross brace. A flange and an inner city pipe are used to connect the cross braces.

[0069] Step S12: Making a boot-shaped corbel inside the tower.

[0070] Step S13: Process the beam bracket. The bracket also includes a vertical connecting rod, and the main beam, the diagonal brace and the table connecting rod are connected to each other to form a triangle.

[0071] The other parts of this embodiment are the same as the above-mentioned embodiment, so they will not be described again.

Embodiment 3

[0073] This embodiment is further optimized on the basis of the foregoing embodiment, and the step S2 specifically includes the following construction steps:

[0074] Step S21: Pre-embedding the climbing vertebrae for internal support positioning and double-stranded wire in the tower.

[0075] Step S22: Install a platform support, which includes a construction platform, a protective railing and a ladder.

[0076] Step S23: The lifting device and embedded parts of the upper beam construction hanger are embedded in the inner side of the main tower. Specifically, it means: using the lower end hanger of the climbing form to install the temporary hanger lifting device of the upper beam, the slideway is installed on the addition, and the installation work of the upper beam construction bracket and the opposite support device is completed by the lifting device.

[0077] It should be noted that through the above improvements,

[0078] The other parts of this embodiment are the same as the abov...

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Abstract

The invention discloses a construction method of a balance force system high-altitude crossbeam bracket. The construction method specifically comprises the following construction steps of processing a crossbeam bracket; manufacturing embedded parts; mounting a construction platform and a lifting hanger frame; hoisting the bracket and constructing a balance force system; mounting a supporting frame and a bottom die system; prepressing the bracket; and performing upper crossbeam concrete casting. Compared with the prior art, the construction method disclosed by the invention can effectively solve the problem of influence on the deforming of a main tower caused by the asymmetry of cable force of stay cables and the temperature of the main tower during the loading of the construction load; manufacturing and processing are standard, labor intensity is low, and constructing progress is quick; and a cross brace and external cables are classified for several time, so that supporting force and the cable force of the stay cables are adjusted, and the deforming of the main tower is accurately controlled; and the construction cost is effectively reduced, the construction progress is accelerated, and the construction is safe and reliable.

Description

Technical field [0001] The invention relates to the technical field of construction of upper beams and cap beam structures of double-tower or double-column piers. Specifically, it is a method for constructing high-altitude beam brackets with balanced forces. Background technique [0002] At present, floor supports are widely used in the construction of the upper beam of the cable tower, and the support foundation is located on the lower beam of the main tower. If the height difference between the upper and lower beams is greater than 60m, it is difficult to construct the upper beam with the floor support, and the tower side bracket construction scheme should be adopted. The bracket is rooted on the inner side of the tower, and the six triangular trusses are arranged symmetrically. The weight of the upper beam and other construction loads are transferred to the tower column through the rigid frame of the bracket formed in the air. How to control the deformation of the tower colum...

Claims

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Application Information

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IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 苏春生闫成军张庆何十美梁朋刚汤振亚
Owner CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP OF THE FIFTH ENG
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