CN111622571A

CN111622571A - Construction method for pouring reserved plate joint bars on cyclone well pool wall and cantilever plate in stages

Info

Publication number: CN111622571A
Application number: CN202010318342.3A
Authority: CN
Inventors: 王丽文; 韩亿宏; 乔林春; 陈永强; 李斌
Original assignee: China MCC20 Group Corp Ltd; Shanghai Ershiye Construction Co Ltd
Current assignee: China MCC20 Group Corp Ltd; Shanghai Ershiye Construction Co Ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2020-09-04
Anticipated expiration: 2040-04-21
Also published as: CN111622571B

Abstract

The invention provides a construction method for pouring reserved plate joint bars by stages for a whirlwind well open caisson pool wall and a cantilever plate. Compared with the traditional method, the invention shortens the mounting and dismounting period of the template worker, ensures the construction quality of the reserved plate dowel, improves the labor productivity, reduces the engineering cost and improves the engineering quality.

Description

Construction method for pouring reserved plate joint bars on cyclone well pool wall and cantilever plate in stages

Technical Field

The invention belongs to the field of construction of a cyclone well open caisson, and particularly relates to a construction method for pouring reserved plate joint bars by stages on a cyclone well pool wall and a cantilever plate.

Background

In the existing traditional construction technology, the construction method for reserving the dowel bars by the platform plate of the pool wall overhanging structure in the construction of the sunk well of the cyclone well is as follows: and reserving the joint bars according to the corresponding holes in the joint bar position template when the template is installed after the installation of the joint bars and the reserved joint bars of the pool wall steel bars and the cantilever beam plate is completed, reserving the joint bars, and planting the joint bars on the steel bars of the pool wall pouring completed back plate. The traditional construction method has the disadvantages that the formwork is provided with holes during the manufacturing of the formwork of the pool wall, the workload of woodworkers is increased, the joint bars reserved in the installation of the formwork correspond to the positions of the holes of the formwork, and the installation and removal operation time of the woodworkers is increased due to the dense space between the joint bars of the formwork; secondly, the plate bar is embedded with bars after the pouring of the pool wall is finished, and the quality factors of the embedded bars are influenced more (construction quality of bar embedding personnel, hole cleaning quality, bar embedding glue quality and the like). Therefore, a construction method for pouring the dowel bars of the reserved plates by stages on the wall of the whirlwind well pool and the cantilever plate, which can reduce the working time of installing and dismantling the templates, improve the labor productivity and ensure the construction quality of the reserved dowel bars, is needed

Disclosure of Invention

The invention aims to solve the technical problem of providing a construction method for pouring the dowel bars of the reserved plates by stages on the wall of the whirlwind well pool and the cantilever plates, which can reduce the working time of installing and dismantling templates, improve the labor productivity and ensure the construction quality of the dowel bars.

The technical scheme adopted by the invention for solving the technical problem is as follows: a construction method for pouring reserved plate joint bars on the wall of a cyclone well and a cantilever plate in stages comprises the following steps:

step 1, after positioning and installing the steel bars on the inner side of the tank wall and the steel bars on the outer side of the tank wall of the open caisson of the cyclone well, bending the plate insertion bars in the same direction, positioning the positions of an cantilever beam and the plate insertion bars according to a design drawing, placing a plurality of plate insertion bars along the inner wall of the tank wall in a staggered manner from one end of the position of the cantilever beam, wherein the bent parts at two ends of the plate insertion bars are respectively arranged at the steel bars on the inner side of the tank wall and the steel bars on the outer side of the tank wall, the plate insertion bars are all positioned in the thickness range of the cantilever plate, and the bent parts of the plate insertion bars at the positions of the steel bars in the tank wall and the steel bars on the outer;

step 2, installing a formwork after the installation of the pool wall steel bars and the plate joint bars is finished, and pouring concrete on the pool wall after the installation of the formwork is finished;

and 3, removing the side die of the pool wall after the strength of the concrete of the pool wall reaches 30%, chiseling according to the position of the inserted steel bars of the positioning plate and the thickness range of the cantilever plate according to design drawings, chiseling the inserted steel bars of the plate in the chiseling process, correcting the inserted steel bars of the plate and welding or binding and connecting the inserted steel bars of the plate and the cantilever plate steel bars during construction of the cantilever plate.

Further, in the step 3, the chiseling thickness of the chiseling is the thickness of the pool wall steel bar protection layer.

Further, in the step 1, the bending length of the plate joint bar on the reinforcing steel bar at the inner side of the pool wall is greater than that of the reinforcing steel bar at the outer side of the pool wall.

Further, in step 1, the distance between the two bends of the plate joint bar is equal to the thickness of the pool wall.

Further, in the step 2, the formwork installation is carried out after the installation acceptance of the pool wall steel bars and the plate joint bars is qualified, and the pool wall concrete pouring is carried out after the installation acceptance of the formwork is qualified.

Further, in the step 1, the length and the anchoring form of the plate joint bar are set according to drawings and specifications.

According to the construction method, the construction process that the position of the construction joint needs to be roughened when the open caisson pool wall and the inner cantilever beam are poured in stages is utilized, the pool wall is poured after the plate inserted bars are installed and bent in the space with thicker protective layer of the pool wall, and the method that the plate inserted bars are chiseled out and corrected when the construction joint is chiseled out is utilized, so that the installation and dismantling period of a template worker is shortened, the construction quality of the reserved plate inserted bars is guaranteed, the labor productivity is improved, the engineering cost is reduced, and the engineering quality is improved.

Drawings

FIG. 1 is a schematic cross-sectional view of a cell wall according to the present invention;

FIG. 2 is a schematic plan view of the plate grid of the present invention;

fig. 3 is a schematic view of the bent plate bar according to the present invention.

1. Cantilever plate, 2, plate dowel bar, 3, pool wall reinforcing steel bar protective layer, 4, pool wall inner side reinforcing steel bar, 5, pool wall outer side reinforcing steel bar.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, the present embodiment includes a construction method for pouring the dowel bars of the reserved plates in stages on the wall of the cyclone well and the cantilever plate, and includes the following steps:

step 1, after the tank wall inner side steel bars 4 and the tank wall outer side steel bars 5 of the sunk well of the cyclone well are positioned and installed, the plate inserting bars 2 are installed and bent in the same direction, one bending is long, and the distance between the two bends is equal to the thickness of the tank wall. Positioning the positions of an overhanging plate 1 and plate joint bars 2 according to a design drawing, placing a plurality of plate joint bars 2 in a staggered manner along the inner wall of the tank wall from one end of the position of an overhanging beam, wherein the longer bent end of each plate joint bar 2 is arranged at an inner side steel bar 4 of the tank wall, the shorter bent end is arranged at an outer side steel bar 5 of the tank wall, the plate joint bars 2 are all positioned in the thickness range of the overhanging plate 1, and the plate joint bars 2 are bent and bound into a whole in the same direction on the surface layer in the range of a tank wall steel bar protective layer 3 and are bound and fixed with main bars of the inner side steel bars 4 of the tank wall and the outer side steel bars 5 of the tank; the length and the anchoring form of the plate joint bar 2 are set according to drawings and specifications;

step 2, after the installation of the pool wall reinforcing steel bars 4 and 5 and the plate joint bar 2 is finished, the template installation is carried out after the acceptance is qualified, and the pool wall concrete pouring is carried out after the acceptance is qualified after the template installation is finished;

and 3, removing the side die of the pool wall after the strength of the concrete of the pool wall reaches 30%, chiseling according to the position of the inserted steel bar 2 of the positioning plate and the thickness range of the cantilever plate 1 according to design drawings, chiseling the inserted steel bar according to the thickness of a steel bar protective layer 3 of the pool wall, chiseling the inserted steel bar 2 in the chiseling process, correcting the inserted steel bar 2 of the plate and welding or binding and connecting the inserted steel bar 2 with the plate steel bar of the cantilever beam plate 1 during construction of the cantilever plate 1.

Claims

1. A construction method for pouring reserved plate joint bars on the wall of a cyclone well and a cantilever plate in stages is characterized by comprising the following steps:

step 1, after the tank wall inner side steel bars (4) and the tank wall outer side steel bars (5) of the open caisson of the cyclone well are positioned and installed, the positions of an overhanging plate (1) and a plate inserting bar (2) are positioned according to a design drawing, a plurality of plate inserting bars (2) are arranged along the tank wall inner wall in a same-direction staggered mode, the bending parts at the two ends of the plate inserting bar (2) are respectively arranged at the tank wall inner side steel bars (4) and the tank wall outer side steel bars (5) and fixed, the plate inserting bar (2) is located in the thickness range of the overhanging plate (1), the plate inserting bar (2) is bent and bound into a whole in the same direction on the surface layer in the range of a tank wall steel bar protective layer (3) and is bound and fixed with the main bars of the tank wall inner side steel bars (4) and the tank wall outer side;

step 2, installing the formwork after the installation of the pool wall steel bars (4) and (5) and the plate joint bars (2), and pouring concrete on the pool wall after the installation of the formwork is finished;

and 3, removing the side die of the pool wall after the concrete strength of the pool wall reaches 30%, positioning the positions of the plate insertion ribs (2) and the thickness range of the cantilever plate (1) according to design drawings, chiseling according to the requirements of construction joints, chiseling the plate insertion ribs (2) out in the chiseling process, correcting the plate insertion ribs (2) during construction of the cantilever plate (1), and welding or binding and connecting the plate insertion ribs (2) with the plate ribs of the cantilever plate (1).

2. The construction method for pouring the dowel of the reserved plate by stages for the cyclone well pool wall and the cantilever plate according to claim 1, wherein in the step 3, the chiseling thickness is the thickness of the steel bar protective layer (3) on the pool wall.

3. The construction method for pouring the reserved plate dowel bars between the cyclone well tank wall and the cantilever plate in stages as claimed in claim 1, wherein in the step 1, the plate dowel bars (2) are arranged on the bending length of the steel bars (4) on the inner side of the tank wall and the bending length of the steel bars (5) on the outer side of the tank wall.

4. The construction method for pouring the reserved plate dowel bars between the wall of the cyclone well and the cantilever plate in stages as claimed in claim 1, wherein in the step 1, the distance between two bends of the plate dowel bars (2) is equal to the thickness of the wall of the cyclone well.

5. The construction method for pouring the reserved plate dowel bars by stages for the cyclone well pool wall and the cantilever plate according to claim 1, wherein in the step 2, the pool wall steel bars (4) and (5) and the plate dowel bars (2) are installed and accepted, then the templates are installed, and the pool wall concrete is poured after the templates are installed and accepted.

6. The construction method for pouring the reserved plate dowel bars between the wall of the cyclone well and the cantilever plate in stages as claimed in claim 1, wherein in the step 1, the length and the anchoring form of the plate dowel bars (2) are set according to drawings and specifications.