Graded casting construction method for cast-in-place annular cantilever pier stud

A construction method and technology for piers and columns, which are used in construction, bridge parts, and erection/assembly of bridges, etc., can solve problems such as insufficient formwork installation, insufficient concrete pouring and vibrating, and defects.

Active Publication Date: 2016-10-26
GUANGZHOU NO 2 MUNICIPAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a one-time pouring construction method is likely to cause improper formwork installation for special-shaped piers, insufficient concrete pouring and vibration, and subsequent appearance quality defects such as misplaced platforms, honeycombs, and pockmarks
At the same time, when the template installation is not in place and needs to be adjusted, the construction period is prolonged

Method used

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  • Graded casting construction method for cast-in-place annular cantilever pier stud
  • Graded casting construction method for cast-in-place annular cantilever pier stud
  • Graded casting construction method for cast-in-place annular cantilever pier stud

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0030] Such as figure 1 , the cast-in-place annular cantilevered pier construction method in stages according to the present invention comprises the following steps:

[0031] (1) Measurement stakeout

[0032] After the steel bars on the roof cap are installed and before the concrete construction, the measuring team will measure and set out the outer contour of the pier column. Referring to the design dimensions of the cap platform: length 1750cm, width 750cm, and height 200cm, use measuring instruments to release the vertical and horizontal axes of the pier column, so as to determine The outer edge of the bottom of the pier column, the pre-embedded position of the pier column reinforcement and the assembly position of the formwork are ready for the later reinforcement installation and formwork installation.

[0033] (2) Manufacture and installation...

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Abstract

The invention relates to the technical field of construction of special-shaped cast-in-place reinforced concrete structures of urban bridges and expressway bridges, in particular to a graded casting construction method for a cast-in-place annular cantilever pier stud. The method mainly includes the steps of staking out in survey, manufacturing and mounting of pier stud embedded bars, bearing platform casting, erection of a pier stud manufacturing support system, mounting of upper steel bars, manufacturing and mounting of a formwork, erection of a local support system, pier stud concrete pouring, curing and form removal. By means of the method, the overall appearance quality and geometric dimension precision of a finished pier stud are greatly improved, construction safety is guaranteed, and the construction cost is reduced.

Description

technical field [0001] The invention relates to the technical field of construction of cast-in-place reinforced concrete special-shaped structures in urban bridges and expressway bridges, in particular to a construction method for cast-in-place annular cantilevered piers in stages. Background technique [0002] With the continuous deepening of modern urban construction, special-shaped piers are widely designed and used for their beautiful structure, strong adaptability, and material saving compared with concrete solid piers, especially for landscape bridges. Due to its complex shape, the construction difficulty from steel bar installation, formwork support, and final concrete pouring is more difficult than that of conventional piers. The main reasons for this include the large camber angle of the special-shaped pier column, the small operating space in the mold, the dense spacing of the stressed steel bars, and the inability of the concrete vibrator to vibrate directly from ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D19/02
CPCE01D19/02E01D21/00
Inventor 张立德黄毅朱炯意梁永祥郭飞
Owner GUANGZHOU NO 2 MUNICIPAL ENG CO LTD
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