CN204386152U - The sliding formwork system of large-diameter cylinder body structure - Google Patents

Abstract

The utility model discloses a sliding form system of a large-diameter cylinder structure, which solves the problem that construction facilities are not connected in the cylinder wall sliding form system and the roof formwork support system in the prior construction technology. Including pre-embedded support rods (2) and door-shaped lifting frames (7) in the poured cylinder wall (1), setting sliding formwork inner and outer formwork on the inner and outer surfaces of the poured cylinder wall, The inner ring (6) of the sliding form and the outer ring (5) of the sliding form are fixedly connected with the lower end of the door-shaped lifting frame respectively, and radiation holes are arranged at equal intervals on the outer circumference of the structural central cylinder (11). Shaped light steel truss (12), the outer end of the radial light steel truss (12) is fixedly connected with the ring steel beam (10) by bolts, and the ring steel beam (10) is fixedly welded on the sliding form inner mold enclosure (6) , a supporting frame (13) is arranged between two adjacent radial steel trusses (12). The utility model is simple in structure, and labor and tool input are few.

Description

Sliding Form System for Large Diameter Cylindrical Structures

technical field

The invention relates to a sliding formwork construction system for cylindrical structures, in particular to a sliding formwork construction system for large-diameter cylindrical structures.

Background technique

In industrial buildings, it is often necessary to construct large-diameter cylindrical structures, such as reinforced concrete silos, water towers, etc. The reinforced concrete cylinder structure has the characteristics of large diameter, high cylinder and difficult construction. When constructing a reinforced concrete cylinder, the foundation of the cylinder is constructed first, then the sliding form system is installed on the foundation of the cylinder, and the formwork of the cylinder is erected and poured in stages. In the existing sliding form system, support rods are pre-embedded in the poured cylinder wall, and a lifting frame is installed on the supporting rods. The sliding formwork inner formwork and the sliding formwork outer formwork are respectively arranged on the lifting frame, and a center plate is arranged in the center of the cylinder body. , set up radial tie rods between the center plate and the inner formwork to form a ring-shaped support for the inner formwork, and the outer ends of the radial tie rods pass through the bolt holes set on the inner side of the lifting frame and are connected together by bolts. When the lifting of the frame is not synchronized, the radial length of the pull rod can be adjusted by loosening the bolt to achieve deviation correction. Due to the limited strength of the radial tie rods set up between the center plate and the inner formwork, they cannot also be used as the inner operating platform. Therefore, it is necessary to set up a cantilevered ring-shaped inner operating platform inside the lifting frame. The ring-shaped inner operating platform generally has a narrow working surface. Inconvenient operation and many potential safety hazards. In the construction of the cylinder wall, after the pouring of the cylinder is completed at this stage, the lifting frame is moved upward along the embedded support rod to construct the formwork system of the next section of the cylinder wall, and then the concrete pouring of the next section of the cylinder is carried out until the completion of the entire cylinder Build work.

Since the general cylinder structure is equipped with a reinforced concrete roof, after the cylinder wall is constructed according to the conventional method, the original sliding form system needs to be dismantled, and a full hall scaffolding is erected separately as a support system for the roof construction. However, the erection height of the Mantang scaffolding support system is too high, and the requirements for the bearing capacity of the foundation are also large. The erection and disassembly of the scaffold requires a lot of manpower and three-steel tools, and the erection period is long.

Contents of the invention

The invention provides a sliding form system for a large-diameter cylinder structure, which solves the problem that the cylinder wall sliding form system and the roof formwork support system in the existing construction technology are independent, there are construction facilities that are not connected, and the cost of manpower and equipment is high. And technical problems with long construction period.

The present invention solves the above technical problems through the following technical solutions:

A sliding form system for a large-diameter cylindrical structure, including a poured cylinder wall, a support rod is pre-embedded in the poured cylinder wall, a door-shaped lifting frame is arranged on the support rod, and a The inner surface of the sliding form is provided with a sliding form inner formwork, the outer surface of the poured cylinder wall is provided with a sliding form outer formwork, the outer surface of the sliding form outer formwork is provided with an outer ring of the sliding form, and the inner form of the sliding form The inside of the formwork is provided with an inner mold enclosure of the sliding form, which is fixedly connected to the lower end of the inner suspender of the door-shaped lifting frame, and the outer mold enclosure of the sliding form is fixedly connected to the lower end of the outer suspender of the door-shaped lifting frame , radial light steel trusses are arranged at equal intervals on the outer circumference of the central cylinder of the structure. A support frame is arranged between the trusses, a scaffold plate is laid on the support frame, and the ring-shaped steel beam is fixedly welded on the inner mold enclosure of the sliding form.

The inner mold templates of the sliding mold are provided with upper, middle and lower inner mold enclosures of the sliding mold.

A construction method of a sliding form system for a large-diameter cylindrical structure, comprising the following steps:

The first step is to pre-embed support rods in the poured cylinder wall, install door-shaped lifting frames on the support rods, set the slip-form internal formwork on the inner side of the poured cylinder wall, and The outer surface of the sliding form is set on the outer surface of the sliding form, the outer surrounding of the sliding form is set on the outer side of the outer forming of the sliding form, and the inner surrounding of the sliding form is set on the inner side of the inner sliding form template;

The second step is to connect the inner ring of the sliding form with the lower end of the inner suspender of the door type lifting frame, and connect the outer ring of the sliding form of the lower ring to the lower end of the outer suspender of the door type lifting frame together;

The third step is to weld radial light steel trusses at equal intervals on the outer circumference of the central cylinder of the structure, and connect the outer ends of the radial light steel trusses to the ring steel beams through bolts to form an operating platform in the sliding form system ; Weld the ring steel beam to the inner form ring of the slipform;

The fourth step is to move the lifting frame upward along the support rod to construct the formwork system of the next section of the cylinder wall, and then pour the concrete of the next section of the cylinder, and weld the pre-embedded corbels at equal intervals along the inner wall of the cylinder in the last section of the cylinder concrete pouring Embedded parts, pouring the concrete of the entire cylinder;

The fifth step is to weld the steel corbel on the inner side of the pre-embedded corbel welding embedded part;

The sixth step is to separate the ring steel beam from the inner mold enclosure of the sliding form, and weld the outer ring of the platform composed of the structural central tube, radial light steel truss and ring steel beam to the steel corbel to form the roof formwork support system.

The invention combines the cylinder wall sliding formwork system and the roof formwork support system into one. During the cylinder wall sliding up stage, the operating platform mainly bears its own weight and the sliding formwork construction load. After the cylinder wall slides up to the top, it is used as the upper formwork The supporting system bears the weight of the roof structure, construction load and its own weight. The invention has the advantages of simple structure, convenient adjustment, less labor and tool investment, and short construction period.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic structural view of the present invention in a top view direction;

Fig. 3 is a diagram of the cooperation between the corbel welding embedded part 15, the steel corbel 16 and the ring steel beam 10 of the present invention.

Detailed ways

The present invention is described in detail below in conjunction with accompanying drawing:

A sliding form system for a large-diameter cylindrical structure, including a poured cylinder wall 1, a support rod 2 is pre-embedded in the poured cylinder wall 1, and a door-shaped lifting frame 7 is arranged on the support rod 2. The inner surface of the poured cylinder wall 1 is provided with a sliding formwork inner formwork 4, the outer surface of the poured cylinder wall 1 is provided with a sliding formwork outer formwork 3, and the outer surface of the sliding formwork 3 is provided with a sliding formwork The outer mold surrounding ring 5 is provided with the sliding mold inner mold surrounding circle 6 inside the sliding mold inner mold template 4, and the sliding mold inner mold surrounding circle 6 is fixedly connected with the lower end of the inner suspender 9 of the door type lifting frame 7, and the sliding mold outer The mold enclosure 5 is fixedly connected to the lower end of the outer suspender 8 of the door-shaped lifting frame 7, and radial light steel trusses 12 are arranged at equal intervals on the outer circumference of the structural central cylinder 11. The end and the ring-shaped steel beam 10 are fixedly connected together by bolts, a support frame 13 is arranged between two adjacent radial steel trusses 12, a scaffold plate 14 is laid on the support frame 13, and the ring-shaped steel beam 10 is fixedly welded on On the sliding mold inner mold enclosing circle 6.

The sliding mold inner mold template 4 is provided with upper, middle and lower three sliding mold inner mold enclosures.

A construction method of a sliding form system for a large-diameter cylindrical structure, comprising the following steps:

The first step is to pre-embed the support rod 2 in the poured cylinder wall 1, install the door-type lifting frame 7 on the support rod 2, set the slip-form inner mold template 4 on the inner side of the poured cylinder wall 1, and The outer surface of the poured cylinder wall 1 is provided with a sliding form outer formwork 3, the outer surface of the sliding form outer formwork 3 is provided with a sliding form outer circle 5, and the inner side of the sliding form inner formwork 4 is provided with a sliding form Inner mold enclosure 6;

The second step is to connect the lower end of the inner suspender 9 of the sliding form inner mold enclosure 6 with the door type lifting frame 7, and hang the sliding form outer mold enclosure 5 of the lower ring with the outer side of the door type lifting frame 7. The lower ends of the rods 8 are fixedly connected together;

The third step is to weld the radial light steel trusses 12 at equal intervals on the outer circumference of the structural central cylinder 11, and connect the outer ends of the radial light steel trusses 12 with the ring steel beams 10 through bolts to form a sliding form The operating platform in the system; the ring steel beam 10 is welded to the inner mold enclosure 6 of the sliding form;

The fourth step is to move the lifting frame 7 upward along the support rod 2 to construct the formwork system of the next section of the cylinder wall, and then perform the concrete pouring of the next section of the cylinder. In the concrete pouring of the last section of the cylinder, the pre-embedded The corbel is welded with embedded parts 15, and the concrete of the whole cylinder is poured;

Step 5, welding steel corbel 16 on the inner side of pre-embedded corbel welding embedment 15;

The sixth step is to separate the annular steel beam 10 from the inner mold enclosure 6 of the sliding form, and weld the outer ring of the platform composed of the structural central cylinder 11, the radial light steel truss 12 and the annular steel beam 10 to the steel corbel 16 , forming a roof formwork support system.

The present invention combines the sliding form system of the large-diameter cylindrical structure and the support system of the top cover of the cylindrical structure into one, uses the sliding form lifting frame as the support point, and uses the sliding form jacking equipment to achieve vertical lifting. The support system of the template in the body can double as the inner operating platform. Annular steel beam 10, in the sliding form outer formwork 3, sliding form inner formwork 4, sliding form outer form enclosure 5, sliding form inner form enclosure 6, door type lifting frame 7 (including outer suspender 8, inner suspender After the rods 9) are all in place, weld the ring-shaped steel beam 10 and the inner suspender 9 of the sliding form lifting frame, and then place the structural center cylinder 11 at the center of the cylinder structure, and then assemble the radial light steel beams one by one. Trusses 12, radial light steel trusses 12 are arranged radially and annularly, one side of the radial light steel trusses 12 is connected to the central structural tube 11, and the other side is connected to the ring steel beam 10, after the radial light steel trusses 12 are assembled , Weld the support frame 13 between the upper and lower chords, and finally spread the scaffolding boards 14, and the assembly of the operating platform is completed. Start the sliding mode hydraulic control system, open the valve switch of each oil circuit, the hydraulic oil pump supplies oil to the cylinder wall circumference jack, and the circumference jack drives the ring steel beam 10 to crawl upward along the support rod 2, thereby lifting the entire operation platform upward together . After continuous lifting to a certain height, concrete can be poured into the formwork around the cylinder wall. After the concrete fills the formwork, it will continue to lift. Repeat the operation until the operation platform is lifted from the lowest point to the top of the cylinder wall to complete the cylinder wall. construction. Pre-embed the corbel welding embedment 15 on the top of the cylinder wall 1 in advance, weld the steel corbel 16, disassemble the ring steel beam 10 of the operating platform and the inner suspender 9 of the sliding form door type lifting frame, and weld the steel corbel 16 , change the supporting point of the operating platform, the operating platform is transformed into a bearing platform for the roof construction of the cylinder structure, and finally the operating platform can be used for roof construction.

Claims (2)

1. the sliding formwork system of large-diameter cylinder body structure, comprise the barrel (1) of having built, support bar (2) is embedded with in the barrel of having built (1), support bar (2) is provided with gate hoisting frame (7), the medial surface of the barrel of having built (1) is provided with sliding formwork inside molding plate (4), the lateral surface of the barrel of having built (1) is provided with sliding formwork external mold template (3), the lateral surface of sliding formwork external mold template (3) is provided with sliding formwork external mold enclosure (5), the medial surface of sliding formwork inside molding plate (4) is provided with sliding formwork internal mold enclosure (6), sliding formwork internal mold enclosure (6) is fixed together with the lower end of the inner side suspension rod (9) of gate hoisting frame (7), sliding formwork external mold enclosure (5) is fixed together with the lower end of the outside suspension rod (8) of gate hoisting frame (7), it is characterized in that, the excircle of heart cylinder (11) is in the structure provided with radial light steel truss (12) at equal intervals radian, together with the outer end of radial light steel truss (12) is bolted to connection with annular girder steel (10), bracing frame (13) is provided with between the adjacent radial light steel truss of two Pin (12), bracing frame (13) is equipped with scaffolding board (14), annular girder steel (10) is fixedly welded in sliding formwork internal mold enclosure (6).

2. the sliding formwork system of a kind of large-diameter cylinder body structure according to claim 1, is characterized in that, the medial surface of sliding formwork inside molding plate (4) is respectively arranged with road, upper, middle and lower three sliding formwork internal mold enclosure (6).