Vertical type prefabricated box culvert shaping wedge-shaped template

Abstract

A vertical prefabricated box culvert shaping wedge-shaped formwork is provided with a bottom formwork, a side formwork, an inner formwork and an upper cover plate, the side formwork, the inner formwork and the upper cover plate are arranged above the bottom formwork, the oppositely-arranged inner formwork is of a wedge-shaped structure, the wedge-shaped formwork is suitable for prefabrication of box culverts of various specifications, the inner formwork can be vertically lifted up and down through a gantry crane to be mounted and dismounted, construction operation is convenient, the structure is simple, and cost is low; the problems that when a traditional prefabricated box culvert formwork is assembled and disassembled, a pulling hard pry is difficult to disassemble, construction is slow, operation is complex, the number of construction joints is large, the construction risk is high, and a horizontal pouring bottom plate is difficult to vibrate and compact are solved. In addition, only a gantry crane is used for assisting in construction in the construction process, few devices are used, and the method is suitable for centralized and industrialized production.

Description

Technical Field

[0001] The utility model belongs to the technical field of box culverts, and particularly relates to a vertical prefabricated box culvert shaping wedge-shaped template. Background Art

[0002] Culvert prefabrication construction can be divided into two construction methods: vertical construction or horizontal box beam imitation construction. The following difficulties may be encountered during the culvert prefabrication construction process:

[0003] (1) Generally, box culvert construction involves on-site steel bar tying, formwork support, and concrete pouring. This requires a long construction period, and segmented pouring is prone to produce construction joints.

[0004] (2) The prefabricated box culvert reinforcement frame is designed to be horizontal and the diameter of the reinforcement is relatively large, which increases the amount of erection reinforcement and is not conducive to green construction.

[0005] (3) The traditional horizontal box girder formwork is used for construction. The non-hydraulic formwork requires many installation and removal times, is inconvenient to install and remove, and has low construction efficiency. Hydraulic formwork is not suitable for prefabrication of small box culverts.

[0006] In summary, currently, on-site casting, traditional vertical construction or horizontal formwork construction are adopted. The quality of on-site casting, traditional vertical and horizontal construction is difficult to guarantee, the construction efficiency is low, and the construction cost is high; hydraulic horizontal formwork is not suitable for small-size prefabrication.

[0007] The utility model with announcement number CN218203943U discloses a prefabricated box culvert forming template for vertical casting, and the technical scheme thereof includes a bottom mold with a predetermined shape and placed horizontally on the external ground, an outer mold arranged along the outer contour of the bottom mold and located on the upper end face of the bottom mold, the bottom mold with a predetermined shape is placed horizontally on the ground, the outer mold is arranged along the outer contour of the bottom mold and located on the upper end face of the bottom mold, the inner mold is arranged along the inner contour of the bottom mold and located on the upper end face of the bottom mold, a support member is arranged inside the inner mold for abutting against the inner end face of the inner mold to prevent the inner mold from deforming inwardly when concrete is poured into the pouring cavity, a hoop member is arranged outside the outer mold for hooping the outer end face of the outer mold to prevent the outer mold from deforming outwardly when concrete is poured into the pouring cavity, and the concrete is poured into the pouring cavity; although the prefabricated box culvert forming template has low difficulty and strictness in forming and fixing when building the box culvert, and is easy to block when pouring the box culvert, the internal inner mold structure still needs to be improved to reduce the area of ​​manual finishing and further improve the vibration effect. Summary of the invention

[0008] The utility model aims to provide a vertical prefabricated box culvert fixed wedge-shaped template for the above-mentioned deficiencies in the prior art, which can be used repeatedly to improve the template utilization rate, and the wedge-shaped template is easy to disassemble to ensure the quality of the finished product.

[0009] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0010] A vertical prefabricated box culvert forming wedge-shaped template, comprising a bottom template and side templates, an inner template and an upper cover plate arranged above the bottom template, wherein the inner templates arranged opposite to each other are wedge-shaped structures;

[0011] The side molds are arranged outside the inner molds and the two are reinforced by corresponding tie rods arranged from the inside to the outside, and adjacent side molds are connected by connecting bolts;

[0012] A reserved lifting space is provided on the bottom mold located at the lower part of the inner mold of the wedge-shaped structure.

[0013] The inner mold of the wedge-shaped structure comprises a first inner mold arranged on the left and right sides, and a second inner mold correspondingly buckled on both sides of the first inner mold, and both ends of the second inner mold are provided with bending parts and are bent toward the first inner mold;

[0014] The first inner mold and the second inner mold are configured as a wedge-shaped structure from top to bottom.

[0015] The lower part of the first inner mold is also provided with a third inner mold which is wedge-shapedly spliced ​​therewith, and the lower part of the second inner mold is also provided with a fourth inner mold which is wedge-shapedly spliced ​​therewith.

[0016] The wedge-shaped inner mold and the outer side mold are both correspondingly provided with tie rod holes for passing the tie rods.

[0017] The backs of the inner mold and the outer mold are both provided with shoulder straps and fixed by pull rods.

[0018] The inner mold and the side mold are dismantled and closed by a door crane.

[0019] The side mold also includes a first side mold arranged correspondingly front and back and a second side mold arranged correspondingly left and right.

[0020] The beneficial effects of the utility model are:

[0021] (1) The vertical prefabricated box culvert fixed wedge-shaped formwork is provided with a bottom formwork and a side formwork, an inner formwork and an upper cover plate arranged above the bottom formwork. The inner formwork arranged oppositely is a wedge-shaped structure. The wedge-shaped formwork is suitable for prefabrication of box culverts of various specifications. The inner formwork can be lifted vertically up and down by a gantry crane for installation and disassembly. It is convenient for construction operation, has a simple structure and low cost. It solves the problems of the traditional prefabricated box culvert formwork being difficult to disassemble by pulling and prying, slow construction, complicated operation, many construction joints, high construction risks, and difficulty in vibrating and compacting the horizontal casting bottom plate. In addition, the construction process only uses a gantry crane to assist the construction, uses less equipment, and is suitable for centralized and factory-based production.

[0022] (2) The template uses a standardized steel mold, which is easy to process and manufacture, and can be repeatedly constructed to improve the utilization rate of the template. The wedge-shaped inner mold structure has a significant effect on reducing labor costs and speeding up work efficiency. The whole process of construction can be completed by using a gantry crane, using less equipment and factory production, which further reduces construction costs and makes it easier to ensure quality; this template is suitable for the prefabrication of box culverts of various specifications and sizes. In the construction of comprehensive roadbed bridges, box culverts are prefabricated in the prefabricated beam yard and used in combination with a gantry crane. No additional lifting equipment is required, which can greatly save construction costs.

[0023] (3) The inner mold adopts a wedge-shaped structure, which is easy to install and disassemble; the templates are connected with connecting bolts. After disassembly, they can be cleaned and maintained according to conventional steel molds and can be used repeatedly, with high utilization rate.

[0024] (4) Pre-buried holes are set on the side of the box culvert, and lifting ears are used to realize the movement and flipping of the box culvert segments; vertical prefabrication is adopted to reduce the manual surface finishing area, facilitate vibration, improve working conditions, promote industrialization level, and ensure quality.

[0025] (5) The whole process uses a gantry crane to install and disassemble the formwork, hoist, and move the construction. Less equipment is used, and centralized, factory-based production and storage are possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the utility model;

[0027] Figure 2 yes Figure 1 AA section view;

[0028] Figure 3 yes Figure 2 BB section view;

[0029] Figure 4 It is the front view of the lifting lug;

[0030] Figure 5 is a side view of the lifting lug;

[0031] Figure 6 It is a top view of the lifting lug. DETAILED DESCRIPTION

[0032] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0033] See also Figure 1It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0034] The utility model provides a vertical prefabricated box culvert fixed wedge-shaped template, such as Figures 1 to 6 shown.

[0035] A vertical prefabricated box culvert forming wedge-shaped template, including a bottom template 1 and side templates, inner templates and upper cover plates 9 arranged above the bottom template 1, the side templates, inner templates and bottom template 1 constitute the entire template system, and the inner templates arranged oppositely are wedge-shaped structures; the side templates are arranged on the outside of the inner template and the two are reinforced by corresponding pull rods 3 arranged from the inside to the outside, and adjacent side templates are connected by connecting bolts 4; after disassembly, they are cleaned and maintained according to conventional steel templates and can be reused with high utilization rate; and a reserved lifting space is provided on the bottom template located at the bottom of the inner template of the wedge-shaped structure, and other templates adopt conventional right-angle steel templates; in this embodiment, the side templates are further divided into a first side template 21 arranged correspondingly in the front and back and a second side template 22 arranged correspondingly in the left and right.

[0036] The template prefabricates the box culvert vertically, and the gantry crane can be used to assist in the installation and removal of the template. After the prefabrication is completed, the lifting lugs are installed on the pre-embedded holes set in advance on the box culvert wall to realize the transfer and flipping of the box culvert segment, reduce the construction difficulty, and overcome the high safety risk of traditional vertical flipping.

[0037] The inner formwork and side formwork are dismantled and assembled by a gantry crane. The entire process is constructed with a gantry crane and is used in conjunction with a precast beam yard. No additional equipment is required, and less equipment is used, thus achieving centralized, factory-based production and storage.

[0038] In this embodiment, the inner mold of the wedge-shaped structure includes a first inner mold 5 arranged on the left and right sides, and a second inner mold 6 correspondingly buckled on both sides of the first inner mold 5, and the two ends of the second inner mold 6 are provided with bending parts and are both bent toward the first inner mold 5; and the first inner mold 5 and the second inner mold 6 are arranged in a wedge-shaped structure from top to bottom. The wedge-shaped structure is easy to disassemble and is suitable for prefabrication of various small and large box culverts. The lower part of the first inner mold 5 is also provided with a third inner mold 7 spliced ​​with it in a wedge shape, and the lower part of the second inner mold 6 is also provided with a fourth inner mold 8 spliced ​​with it in a wedge shape.

[0039] Tie rod holes for passing tie rods 3 are provided on the wedge-shaped inner mold and the outer side molds respectively; shoulder straps are also provided on the back of the inner mold and the outer mold and fixed by tie rods 3.

[0040] More specifically, the inner mold adopts a wedge-shaped structure, and parallel molds can be added according to the length and specifications of the box culvert. Tie rod holes are set at the corresponding positions of the wedge-shaped inner mold and the outer side mold to reinforce the mold and prevent the mold from expanding during the concrete pouring process. The panels of the inner mold and the side mold are bent as a whole plate, and straps are set on the back of the inner mold and the outer mold. The template is fixed by the tie rod to ensure the safety and stability of the box-shaped template.

[0041] During the template construction, install the bottom template first, then the inner template, tie the steel bars in advance, use the gantry crane to install the steel bars as a whole, and finally install the outer side template and the upper cover plate. After the construction is completed, remove the first inner template 1 first, then the second inner template 2, then the third inner template 3, and finally the fourth inner template 4. Other templates are disassembled according to the conventional method. The whole construction process is carried out with the cooperation of the gantry crane; after the template is disassembled, the template is cleaned and the next section of the box culvert is prefabricated. After the prefabrication is completed, special lifting ears are installed on the embedded holes set in advance on the side of the box culvert to realize the transfer and flipping of the box culvert segment, reduce the construction difficulty, and overcome the high safety risk of traditional vertical flipping.

[0042] The wedge-shaped formwork is prefabricated vertically, and it is convenient to vibrate straight up and down when pouring concrete, which overcomes the problem that the bottom plate of horizontal pouring is difficult to vibrate and compact. Compared with horizontal pouring, it reduces the area of ​​manual finishing, and the appearance quality is easy to ensure; it improves working conditions and promotes the level of industrialization; it can be used for vertical prefabrication of box culverts. The wedge-shaped formwork is a new type of formwork for vertical prefabrication of box culverts, with high formwork utilization rate; it is simple to install and disassemble, with high construction efficiency and easy to protect the quality of the finished product; it uses less equipment, is factory-produced, saves manpower, and has low construction costs; it reduces construction difficulty and has low safety risks; it is suitable for vertical prefabrication of box culverts of various sizes.

[0043] If the words "first", "second" and so on are used in this patent to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the utility model and simplifying the description, and the above words have no special meaning.

[0044] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

[0045] In the description of the present invention, it is necessary to understand that the terms "front", "rear", "left", "right", "center", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the protection content of the present invention.

Claims

1. A vertical prefabricated box culvert fixed wedge-shaped template, characterized by: It includes a bottom mold and a side mold, an inner mold and an upper cover plate arranged above the bottom mold, and the inner molds arranged opposite to each other are wedge-shaped structures; The side molds are arranged outside the inner molds and the two are reinforced by corresponding tie rods arranged from the inside to the outside, and adjacent side molds are connected by connecting bolts; A reserved lifting space is provided on the bottom mold located at the lower part of the inner mold of the wedge-shaped structure.

2. A vertical prefabricated box culvert fixed wedge-shaped template according to claim 1, characterized in that: The inner mold of the wedge-shaped structure comprises a first inner mold arranged on the left and right sides, and a second inner mold correspondingly buckled on both sides of the first inner mold, and both ends of the second inner mold are provided with bending parts and are bent toward the first inner mold; The first inner mold and the second inner mold are configured as a wedge-shaped structure from top to bottom.

3. A vertical prefabricated box culvert fixed wedge-shaped template according to claim 2, characterized in that: The lower part of the first inner mold is also provided with a third inner mold which is wedge-shapedly spliced ​​therewith, and the lower part of the second inner mold is also provided with a fourth inner mold which is wedge-shapedly spliced ​​therewith.

4. A vertical prefabricated box culvert fixed wedge-shaped template according to any one of claims 1 to 3, characterized in that: The inner mold and the outer side mold are both correspondingly provided with tie rod holes for passing the tie rods.

5. The vertical prefabricated box culvert fixed wedge formwork according to claim 4, characterized in that: The backs of the inner mold and the outer mold are both provided with shoulder straps and fixed by pull rods.

6. The vertical prefabricated box culvert fixed wedge formwork according to claim 4, characterized in that: The inner mold and the side mold are dismantled and closed by a door crane.

7. The vertical prefabricated box culvert fixed wedge-shaped template according to claim 4, characterized in that: The side mold also includes a first side mold arranged correspondingly front and back and a second side mold arranged correspondingly left and right.

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