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High pier zero block counter-force pre-pressing method based on combined bracket

A zero-block, combined technology, used in the erection/assembly of bridges, bridges, buildings, etc., can solve the problems of large influence of bearing platform geometric size, small applicable surface, and lack of versatility.

Inactive Publication Date: 2021-07-30
NO 1 ENG CO LTD OF CR11BG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution has the following defects: 1. This utility model uses the cap as a fulcrum for counter force preloading. This preloading method is greatly affected by the geometric size of the cap, which is not universal and has a small application area.

Method used

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  • High pier zero block counter-force pre-pressing method based on combined bracket
  • High pier zero block counter-force pre-pressing method based on combined bracket
  • High pier zero block counter-force pre-pressing method based on combined bracket

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with accompanying drawing.

[0030] A combined bracket adapted to the zero block of high piers provided by the present invention includes at least an upper shear key 2, a lower shear key 1, a bracket diagonal brace 3 and a bracket straight brace 4, and the structure is as follows figure 1 and figure 2 As shown, the lower shear keys are provided with an even number of more than four, and the lower shear keys are evenly distributed on the left and right sides of the pier body and their positions correspond to each other. Between the two lower shear keys corresponding to the left and right positions It is connected with a horizontal tie rod 5 pre-buried in the pier body, and the lower shear key is fixed on the pier body through the horizontal tie rod. The upper shear keys are provided with an even number and are more than four, and the upper shear keys are evenly distributed on the left and right sides ...

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Abstract

The invention provides a high pier zero block counter-force pre-pressing method based on a combined bracket. The method comprises the following steps of installing an embedded climbing cone and reserving a finish rolling thread steel hole channel, installing an upper shear key and a lower shear key, installing a bracket straight support and a bracket inclined support, laying a distribution longitudinal beam, laying a distribution cross beam, installing a tensioning unit, installing a reaction frame, installing a vertical opposite-pull rod and obtaining prepressing deformation data. The construction problem that the universality is not achieved when the bearing platform is used as a supporting point for counter-force prepressing is solved, and meanwhile the device has the advantages of being easy to install, convenient to disassemble, economical, efficient, high in universality, wide in application range and capable of improving the construction efficiency.

Description

technical field [0001] The invention belongs to the field of bridge construction, in particular to a counterforce preloading method for the zero block of a high pier based on a combined bracket. Background technique [0002] The zero block in the continuous beam construction process is the foundation of the cantilever pouring construction on the upper part of the bridge. Due to its huge volume and heavy construction load, the zero block bracket must be installed before pouring. The quality of the bracket construction is good or bad. To determine the construction safety of the zero block, the bracket must be preloaded after installation, and the stiffness, strength and overall stability of the bracket are checked, and the inelastic and elastic deformation values ​​of the bracket are obtained. The common preloading method of brackets is heap preloading. This kind of preloading method is cumbersome, time-consuming and labor-intensive, and the construction risk is high, which gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/10
CPCE01D21/10
Inventor 赵银超宋金菊李兴勇李廷军
Owner NO 1 ENG CO LTD OF CR11BG
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