Integral one-time pouring construction method of large-volume concrete for special-shaped pier stud
A technology of mass concrete and construction method, applied in construction, erection/assembly of bridges, bridges, etc., can solve the problems of long construction period, increased density of steel bars, small operating space in the mold, etc., to ensure construction safety and save construction. cost, the effect of improving appearance quality and geometric dimensional accuracy
Active Publication Date: 2015-10-07
SHENYANG MUNICIPAL GROUP
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Problems solved by technology
Due to its complex structure, the installation of steel bars and the support of formwork are more difficult, especially the special-shaped pier columns have a large camber angle, and the small operating space in the mold and dense steel bars make concrete construction more difficult.
The traditional construction method is that the main reinforcement of the pier body is lengthened one by one on site, the horizontal stirrups are bound layer by layer, the formwork of the pier body is installed in stages, and the concrete is poured in stages. Wrong platform, chromatic aberration, appearance quality defect
Method used
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Embodiment Construction
[0021] A construction method for integral one-time pouring of large-volume concrete for special-shaped pier columns, specifically comprising the following steps:
[0022] 1. Pre-embedded positioning of pier column reinforcement
[0023] After the steel bars on the top plate of the cap are installed, before the concrete construction, the measurement team will measure and set out the pier columns. Referring to the design dimensions of the cap: 1050cm long and 650cm wide, the vertical and horizontal axes of the pier columns will be released with a total station to determine the pre-planned dimensions of the pier column reinforcements. For the buried position, the on-site construction personnel used temporary steel bars to fix the position of the pier column based on the setting-out of the survey team, and prepared for the overall hoisting of the pier column steel bar. Use a crane to lift it into place at one time, and add temporary supports to ensure that the steel bars are not b...
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The invention discloses an integral one-time pouring construction method of large-volume concrete for a special-shaped pier stud. The construction method comprises working procedures of pre-construction preparation, manufacturing and mounting of pier-stud steel bars, template lofting, template designing, template processing, template mounting, concrete pouring, maintenance, template removal, transverse-beam drawing, mud jacking construction and the like. The construction method disclosed by the invention adopts large-area shaping steel templates; through the integral one-time splicing of pier body templates and in the manner that the overall pier body templates are reinforced by a purlin system at the peripheries of the templates, a finished pier body without tie rod holes is realized; during the construction of concrete vibration, a vibration method that an immersion vibrator is used as a main device, and an attached vibrator is used as an auxiliary device is adopted, so that the overall appearance quality and the geometric dimensioning precision of the finished pier stud are greatly improved; besides, the construction safety is guaranteed, and the construction cost is reduced.
Description
technical field [0001] The invention relates to the technical field of construction of special-shaped reinforced concrete structures in urban houses, bridges and expressway bridges, and in particular to a construction method for integral one-time pouring of large-volume concrete for special-shaped pier columns. Background technique [0002] With the modern urban construction, special-shaped piers are widely designed and used due to their beautiful structure, strong adaptability, and material saving compared with concrete solid piers. Due to its complex structure, the installation of steel bars and the support of formwork are more difficult, especially the special-shaped pier columns have a large camber angle, and the small operating space in the mold and dense steel bars make concrete construction more difficult. The traditional construction method is that the main reinforcement of the pier body is lengthened one by one on site, the horizontal stirrups are bound layer by lay...
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Inventor 高辉刘鹏飞李硕黄海孙亮石旭
Owner SHENYANG MUNICIPAL GROUP