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Construction method of two-step accurate in-place pier anti-seismic facility steel hoop

A construction method and technology of steel ferrules, which are applied in bridge construction, bridges, bridge parts, etc., can solve the problems of long aerial work, increase project cost, and prolong construction period, so as to improve construction work efficiency, save cost, and improve resistance. Effects of ductility and shear strength

Active Publication Date: 2021-03-09
BEIJING URBAN CONSTR ROAD & BRIDGE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For pier reinforcement cages with a main reinforcement length ≤ 12m, if the main reinforcement is provided with joints, it will be simplified and complicated, which not only prolongs the construction period, but also increases the construction cost due to heavy workload and long working time at height

Method used

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  • Construction method of two-step accurate in-place pier anti-seismic facility steel hoop
  • Construction method of two-step accurate in-place pier anti-seismic facility steel hoop
  • Construction method of two-step accurate in-place pier anti-seismic facility steel hoop

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Embodiment Construction

[0037] The present invention will be further described below with reference to the accompanying drawings.

[0038] Such as Figure 1 ~ 6 The embodiment shown, including the following steps:

[0039] Step 1, the installation platform reinforcement 1:

[0040] Install the underlying steel mesh, place the horsetry steel, bind the strand bottom plate reinforcement 102, mount the shelf 103, place the top reinforcing bar 101, and the area of ​​the pier steel cage 201 is equipped in the center of the top reinforcing bar 101.

[0041] Such as figure 1 Step 2 shown in, temporarily placed steel cartridge:

[0042] The outer contour 202 of the center of the bridge 2 and the outer contour 202 of the center of the bridge 2 is discharged on the underlying steel bar, and the prefabricated steel sleeve 3 is used to open the hoop hole on both sides of the steel sleeve 3. The fixation is placed on the underlying reinforced bar 102 to ensure that the outer side of the steel sleeve 3 is parallel to t...

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Abstract

The invention discloses a construction method of a two-step method accurate in-place pier anti-seismic facility steel hoop, and belongs to the field of building auxiliary equipment application. A steel hoop installation process is lifted to a position before a pier reinforcement cage is pre-buried, a steel hoop is temporarily fixed to bearing platform bottom-layer steel bars, then the pier reinforcement cage is integrally installed, then the steel hoop is lifted to the position above the top face of a bearing platform, and after bearing platform construction is completed, the steel hoop is accurately located in place. Compared with a traditional construction method, the method is time-saving, efficient and easy for quality control; and the problem that the integrity of the steel hoop is poor is solved, the high-altitude operation time is shortened, the appearance quality of the steel hoop is guaranteed, and the construction efficiency is improved. Meanwhile, the problem that the arrangement of the short pier reinforcement cage main reinforcement joint is limited is solved, the aerial work time is shortened, the construction efficiency is improved, and the manufacturing cost is saved.

Description

Technical field [0001] The present invention belongs to the application of the construction assistance equipment application, in particular, a construction method for the seismic facility steel ferrule of the bridge pier. Background technique [0002] The seismic performance difference between the piers is mainly due to the lack of bridge. In the cylindrical bridge, the longitudinal main junction assists the concrete to withstand pressure and possibly small bending moment, the spiral hoist is in the three-way pressure-receiving state, improve the ultimate pressure strain of the concrete, so that the intermediate portion of the cross section is constrained concrete, The concrete bridge has a certain bearing capacity and ductility. A large number of research and practice show that the pier-column axial pressure ratio, longitudinal steel reinforcement ratio, longitudinal steel bar grade, horizontal steel bars, horizontal steel bar grade, concrete strength grade, concrete mating rati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D19/02E02D27/14
CPCE01D21/00E01D19/02E02D27/14
Inventor 段江龙张曙光徐建波黄旭
Owner BEIJING URBAN CONSTR ROAD & BRIDGE GROUP
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