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Bracket pre-pressing mechanism and pre-pressing method thereof

A bracket and preloading technology, applied in the erection/assembly of bridges, bridges, buildings, etc., can solve the problems of short construction period, long construction period, poor applicability, etc.

Pending Publication Date: 2021-04-20
CHINA RAILWAY 23RD BUREAU GRP NO 1 ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to: address the high risk of preloading construction in the existing bracket preloading technology, the difficulty of accurately grasping the amount and direction of the preloading load, poor applicability, slow loading speed, long construction period, installation and removal There are technical problems such as relatively large risks, and a bracket preloading mechanism and its preloading method are provided. The bracket preloading mechanism has a simple structure, is easy to install and disassemble, and has high safety and fast loading speed during the preloading process. The construction period is short, and at the same time, the size and direction of the preload can be accurately grasped, and the applicability is strong, which is convenient for widespread application

Method used

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  • Bracket pre-pressing mechanism and pre-pressing method thereof
  • Bracket pre-pressing mechanism and pre-pressing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0057] Such as figure 1 with figure 2 As shown, a bracket preloading mechanism, brackets 2 are arranged on both sides of the upper end of the pier body 1, and the first distribution beam 21 and the second distribution beam 21 are respectively laid on the brackets 2 on both sides of the pier body 1 along the length direction of the pier body. Two distribution beams 22, the first distribution beam 21 and the second distribution beam 22 are double-beam I-beam distribution beams. It includes two preloading units arranged at intervals along the length direction of the pier body 1, wherein the length direction of the pier body is figure 2 In the direction indicated by the arrow A. The pre-compression unit is located above the bracket 2 .

[0058] Such as figure 1 As shown, the preloading unit includes a jack 3, a first reaction force frame 5, a second reaction force frame 6, a first support column 6 and a second support column 7; wherein, the first reaction force frame 5 and ...

Embodiment 2

[0065] A method for bracket preloading using the bracket preloading mechanism in Embodiment 1, comprising the following steps:

[0066] Step 1. On the brackets 2 on both sides of the pier body 1, the first distribution beam 21 and the second distribution beam 22 are respectively laid along the length direction of the pier body, and the at least two preloading units arranged at intervals along the length direction of the pier body are determined. position, install the pre-compression unit, the pre-compression unit is mainly installed by the following methods: step S1, respectively install the first support column 6 and the second support column 7 on the top of the pier body 1; step S2, the second support column installed in step S1 A support column 6 is installed with the first reaction force frame 5, and then the second support column 7 installed in step S1 is installed with the second reaction force frame 6, after that, connect one end of the first reaction force frame 5 with ...

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Abstract

The invention relates to a bracket pre-pressing mechanism and a pre-pressing method thereof. The bracket pre-pressing mechanism comprises at least one pre-pressing unit arranged in the length direction of a pier body, and each pre-pressing unit comprises a jack, a first reaction frame, a second reaction frame, a first supporting column and a second supporting column; the first supporting column is arranged at the top of the pier body, and the top of the first supporting column is movably connected with the first counter-force frame; the second supporting column is arranged on the other side of the top of the pier body, and the top of the second supporting column is movably connected with the second counter-force frame; one end of the first reaction frame is movably connected with one end of the second reaction frame, and a movable connecting point formed between the first reaction frame and the second reaction frame is fixedly connected with the top of the jack. The bracket pre-pressing mechanism is simple in structure, convenient to mount and dismount, high in safety, high in loading speed and short in construction period in the pre-pressing process, meanwhile, the magnitude and direction of the pre-pressing load can be accurately mastered, and applicability is high.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a bracket preloading mechanism and a preloading method thereof. Background technique [0002] Long-span continuous beams and continuous rigid-frame bridges are widely used in the field of bridge engineering, especially in the construction of high-grade highways in mountainous areas, which involve a large number of high-pier long-span bridges. The construction of the 0# block on the top of the continuous beam bridge and the continuous rigid frame high pier is the foundation of the later cantilever construction. The concrete volume is generally large, and the bracket set up to support the 0# block cast-in-place concrete is a crucial structure . The bracket is an important force-bearing structure fixed on the upper part of the pier body to bear the No. 0 block bracket, formwork, concrete and construction load. In order to test the bearing capacity and stability of the w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/10
Inventor 路兆印黄新艺蒋彦鹏钟云飞张星聂健行
Owner CHINA RAILWAY 23RD BUREAU GRP NO 1 ENG