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Bridge precast pier body installation positioning guide device and construction method thereof

A technology for installing positioning and guiding devices, which is used in bridges, bridge construction, erection/assembly of bridges, etc., and can solve problems such as difficult control of position accuracy and damage to surrounding components.

Active Publication Date: 2019-03-01
CCCC SECOND HARBOR ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the early 1990s, our country began the research on prefabricated assembled bridge piers. In recent years, the construction scheme of segmental assembled bridge piers has been adopted in long bridge projects such as Donghai Bridge, Hangzhou Bay Bridge, and Shanghai Yangtze River Bridge. , the pier body of its substructure adopts the prefabricated segmental assembly construction technology of welded or lapped steel bars and wet joint connection structure, but the position accuracy of the pier body in this splicing method is not easy to control during the lowering process, so repeated lifting and hook drop often occur Such actions are likely to cause damage to surrounding components

Method used

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  • Bridge precast pier body installation positioning guide device and construction method thereof
  • Bridge precast pier body installation positioning guide device and construction method thereof
  • Bridge precast pier body installation positioning guide device and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Such as Figure 1~4As shown, a bridge prefabricated pier body 11 is installed with a positioning guide device, including:

[0055] Bottom plate 1, which is a rectangular parallelepiped plate structure, is provided with a reserved hole 6 for installation on the bottom plate 1, on which is provided with an implanted anchor screw 8 and a nut 9, and the bottom plate 1 is connected with the implanted anchor screw 8 and nut 9. Bearing platform 12 is fixed.

[0056] The guide side wing plate 2 is composed of a lower vertical plate and an upper curved panel. The vertical plate of the guide side wing plate 2 is vertically arranged on one side of the bottom plate 1, and the bottom plate 1 is installed on one side of its long side The vertical guide flank plate 2 is formed by welding steel plates with a certain thickness. The upper curved panel of the guide side wing plate 2 is convenient for the prefabricated pier body 11 to slide down to the bearing platform 12 along the curve...

Embodiment 2

[0067] Such as Figure 5 , Figure 7-9 As shown, a bridge prefabricated pier guide installation positioning construction method, including the following steps:

[0068] Step 1. Set up 8 sets of positioning and guiding devices on the cap, and set them in groups of two on the four sides corresponding to the inner side of the prefabricated pier body, and the guiding side panels are set towards the inner side of the prefabricated pier body. The positioning and guiding devices and The distance between the prefabricated pier body setting positions is 5-10mm, which is used as the lowering operation space for the prefabricated pier body (11) of the bridge.

[0069] Step 2. Each positioning guide device is fixed to the platform through the installation reserved hole, implanted anchor screw and nut, and the pre-embedded steel bar 10 on the platform passes through the first steel bar reserved hole and the second steel bar reserved hole ;

[0070] Step 3. Prefabricated pier body is hoi...

Embodiment 3

[0082] Such as Figure 6 As shown, a bridge prefabricated pier external guide installation and positioning construction method is characterized in that it includes the following steps:

[0083] Step 1. Install 8 sets of positioning and guiding devices on the platform cap, and set them in pairs on four sides corresponding to the outer sides of the prefabricated pier body. The distance between the set positions of the pier body is 5-10 mm, which is used as the lowering operation space for the prefabricated pier body (11) of the bridge;

[0084] Step 2. Each positioning guide device is fixed to the bearing platform through the installation reserved hole, implanted anchor screw and nut, and the pre-embedded steel bars on the bearing platform pass through the first steel bar reserved hole and the second steel bar reserved hole;

[0085] Step 3. Prefabricated pier body is hoisted and lowered, and the prefabricated pier body is preliminarily guided by the upper curved panel of the g...

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Abstract

The invention discloses a bridge precast pier body installation positioning guide device and a construction method thereof. The bridge precast pier body installation positioning guide device comprisesa bottom plate, a guide flank plate, a reinforcing member and a horizontal fine-tuning device. The bottom plate is of a rectangular parallelepiped plate structure, the bottom plate is provided with installation reservation holes on which implanted anchoring screws and nuts are arranged, the guide flank plate is formed by combining a vertical plate on the lower part and a curved plate on the upperpart, the vertical plate of the guide flank plate is vertically arranged on one side of the bottom plate, the reinforcing member is arranged between the bottom plate and the guide side wing plate, the horizontal fine-tuning device consists of a lead screw, a movable ball head and a sleeve, the lead screw is connected with the sleeve through threads, one end of the lead screw is connected with themovable ball head, the movable ball head can run out of the guide flank plate under driving by the lead screw, the diameter of a through hole formed in the guide flank plate is greater than the diameter of the movable ball head, and the lower part of the sleeve is clamped in a groove of a fixed steel plate. The bridge precast pier body installation positioning guide device has a simple structureand is accurate in positioning.

Description

technical field [0001] The invention relates to the field of bridge construction. More specifically, the present invention relates to a bridge prefabricated pier installation positioning guide device. Background technique [0002] With the vigorous advancement of my country's infrastructure, as of 2017, my country has built as many as 832,000 highway bridges, and has become the world's largest bridge country. my country's bridge construction and construction technologies have gradually matured, forming a set of rapid bridge construction technologies— —Prefabricated assembly technology. The prefabricated assembly technology adopts factory production and on-site assembly to realize the rapid construction of the bridge to the greatest extent. At the same time, the prefabricated assembly technology greatly reduces the shrinkage and creep of concrete after installation and bridge completion, and can effectively control the construction quality. [0003] In the early 1990s, our ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
CPCE01D21/00Y02A30/30
Inventor 郑先河袁航夏欢周洁王琦李冕
Owner CCCC SECOND HARBOR ENG