CN103321405B - Large formwork lifting construction method for shear wall and cylinder concrete structure - Google Patents

Abstract

The invention discloses a lifting type construction method of large formwork for shear walls and cylindrical concrete structures. The formwork system is changed from traditional plywood to customized large formwork. At the same time, an operation platform is set with the poured concrete wall as a support point, and the The tower crane is lifted to complete the construction of the shear wall and the concrete wall of the cylinder. The construction method of the shear wall and the large formwork lifting type of the cylindrical concrete structure is characterized in that: the following steps are carried out: including installing the tower crane, making the large formwork and the upper operation platform, installing the embedded parts, pouring and curing concrete, and removing the large formwork and its Supporting system, making the middle operation platform and lower operation platform, installing steel bars on the middle operation platform, moving the cleaned large formwork, installing formwork on the middle operation platform at the new position, straightening device and the upper operation platform at the new position Pour concrete. The invention has the advantages of being simple and practical, saving man-hours and reducing costs.

Description

Large formwork lifting construction method for shear wall and cylinder concrete structure

technical field

The invention relates to the technical field of building construction, in particular to a lifting type construction method of a large formwork for a shear wall and a cylindrical concrete structure.

Background technique

As buildings get taller, there are more and more shear walls and cylindrical concrete structures. The traditional domestic construction method of shear walls and cylindrical concrete is to erect double outer rows of steel pipe scaffolding around the building, and the concrete walls The plywood formwork is used, and the tower crane is transported vertically. This construction method has the disadvantages of large amount of labor, low utilization efficiency of tower cranes, and serious waste of plywood due to the need to erect double outer rows of scaffolding.

Contents of the invention

The purpose of the present invention is to address the deficiencies in the prior art, to provide a large formwork lifting construction method for shear walls and cylindrical concrete structures, to change the formwork system from traditional plywood to customized large formwork, and at the same time, use the poured concrete wall As a support point, an operating platform is set up and lifted by a tower crane to complete the construction of shear walls and cylindrical concrete walls.

The object of the present invention is achieved like this: shear wall, cylinder body concrete structure big formwork lifting type construction method, it is characterized in that: carry out according to the following steps:

1. Arrange and install tower cranes, whose radius can cover the entire building;

2. Use 18mm thick plywood to make a large formwork panel, the height is the floor height, and the width is 6m. Use 50×100mm square wood as the vertical back corrugation, 8# channel steel as the horizontal back corrugation, and reinforce it with pull bolts. A steel tripod with a width of 0.9m is set on the upper part of the large formwork, and wooden boards and railings are laid on the steel tripod to form an upper operating platform for the construction of concrete to be poured;

3. Install the embedded parts. After the steel bars of the poured concrete wall are installed, install the embedded parts for the next step of installing the middle operation platform and the lower operation platform in the concrete wall to be poured;

4. Pour and maintain the concrete. After reaching a certain strength, dismantle the large formwork and its supporting system, and use a tower crane to lift it to the newly poured concrete floor for cleaning and renovation. Among them, the large formwork panel, the vertical back flute, the horizontal back flute, and the steel tripod, wooden boards, and railings in the upper operating platform are all lifted together;

5. The middle operation platform and the lower operation platform on the poured concrete are manufactured in the same way as the upper operation platform, that is, planks and railings are laid on the steel tripod, and the middle operation platform and the lower operation platform are lifted by the tower crane. The two buried parts are reinstalled and fixed respectively to fix the middle operation platform and the lower operation platform;

6. Construction personnel install steel bars on the central operating platform at the new location;

7. Use the tower crane to move the cleaned large formwork and its supporting system to the next concrete pouring site;

8. Construction workers install formwork and straightening devices on the middle operating platform at the new position, and pour concrete on the upper operating platform at the new position; and repeat this cycle until the construction of the wall concrete is completed.

Compared with the prior art, the present invention has the advantages of being not only simple and practical, saving man-hours, but also reducing costs.

Description of drawings

Figure 1: Sectional view of large formwork lifting construction of shear wall and cylindrical concrete structure.

In the figure: 1. Pull bolt 2. Concrete to be poured 3. Embedded parts 4. Concrete already poured 5. Steel tripod 6. Railing 7. Wooden board 8. Panel 9. Vertical back corrugation 10. Horizontal back corrugation 11. Middle operation Platform 12. Straightening device 13. Lower operating platform

Detailed ways

In order to further describe the present invention, the present invention will be further described below in conjunction with the embodiments and accompanying drawings.

As shown in the figure, the large formwork lifting construction method of the shear wall and the cylindrical concrete structure is characterized in that: the following steps are carried out:

1. Arrange and install tower cranes, whose radius can cover the entire building;

2. Use 18mm thick plywood to make a large formwork panel 8, the height is the floor height, and the width is 6m. Use 50×100mm square wood as the vertical back corrugation 9, and 8# channel steel as the horizontal back corrugation 10, and reinforce it with the pull bolt 1. A steel tripod 5 with a width of 0.9m is set on the upper part of the large template, and planks 7 and railings 6 are laid on the steel tripod 5 to form an upper operating platform for the construction of the concrete 2 to be poured;

3. Install the embedded parts. After the concrete 2 wall reinforcement is installed, install the embedded parts 3 for the next step of installing the middle operation platform 11 and the lower operation platform 13 in the wall of the concrete 2 to be poured;

4. Pour and maintain the concrete. After reaching a certain strength, dismantle the large formwork and its supporting system, and use a tower crane to lift it to the concrete 2 floor to be cleaned and repaired; among them, the large formwork panel 8, the vertical back corrugated 9, and the horizontal back corrugated 10, and the steel tripod 5, plank 7 and railing 6 in the upper operating platform are all promoted together;

5. The middle operating platform 11 and the lower operating platform 13 on the poured concrete 4 are manufactured in the same way as the upper operating platform, that is, planks 7 and railings 6 are laid on the steel tripod 5, and the middle operating platform and the lower operating platform 11 are lifted by a tower crane , 13, reinstall and fix the middle operating platform 11 and the lower operating platform 13 respectively with the two embedded parts 3 buried in the original concrete 2 to be poured;

6. Construction workers install steel bars on the central operating platform 11 at the new location;

7. Use the tower crane to move the cleaned large formwork and its supporting system to the next concrete pouring site;

8. Construction personnel install formwork and straightening device 12 on the middle operating platform 11 at the new position, and pour concrete on the upper operating platform at the new position; and circulate in this way until the construction of the wall concrete is completed.

Claims (1)

1. shear wall, cylindrical shell concrete structure large form lift-type construction method, is characterized in that: carry out according to the following steps:

1). arrange and install tower crane, its radius can cover whole building;

2). make large form panel (8) with the thick veneer of 18mm, be highly floor height, width is 6m, makes vertical back cord (9) with 50 × 100mm lumps of wood, and horizontal back cord (10) made by 8# channel-section steel, reinforces with split bolt (1); Arrange the steel tripod (5) of width 0.9m on large form top, steel tripod (5) lays plank (7), railing (6) above, is configured for the upper operating platform treating concrete construction;

3). built-in fitting is installed, after concreting (2) wall reinforcement installs, is treating the built-in fitting (3) being used for next step installation middle part operating platform (11) and bottom operating platform (13) is installed in concreting (2) wall;

4). to build and curing concrete, after reaching some strength, remove large form and support system thereof, and winch to tower crane treat pouring concrete (2) flooring is cleared up, trimming; Wherein, large form panel (8), vertical back cord (9), horizontal back cord (10), and steel tripod (5) in upper operating platform, plank (7), railing (6) promote all together;

5). the middle part operating platform (11) on pouring concrete (4) and bottom operating platform (13), preparation method is with top operating platform, namely on steel tripod (5), plank (7), railing (6) is laid, with operating platform (11) in the middle part of tower crane movable lifting and bottom operating platform (13), treat that two built-in fittings (3) buried underground in pouring concrete (2) are reinstalled respectively fix middle part operating platform (11) and bottom operating platform (13) with former;

6). reinforcing bar installed by constructor's middle part operating platform (11) in a new location;

7). the large form and support system concreting position extremely next time thereof cleared up is moved with tower crane;

8). the upper installation form of constructor's middle part operating platform (11) in a new location and machine straightening device (12), concreting on upper operating platform in a new location; Circulate according to this, until complete the concrete construction of wall.