Non-linear steel sheet pile cofferdam template mounting structure

Abstract

The utility model provides a non-linear type steel sheet pile cofferdam formwork installation structure which comprises a formwork body, hanging nails and a foam plate, a hanging plate is arranged on one side of the formwork body, hanging grooves are formed in the hanging plate, the hanging nails are arranged at the corners of a steel sheet pile body, the hanging plate is hung on the hanging nails through the hanging grooves, and the foam plate is arranged on the formwork body. The foam plate is arranged in a cavity defined by the formwork body and the steel sheet pile body and attached to the inner wall of the cavity. By means of the formwork mounting structure, the formwork body at the concave position of the steel sheet pile body can be stably supported through the foam plate in the foundation concrete construction process, the structure of the steel sheet pile body is fully utilized, the requirement for the rigidity of the formwork body is weakened, meanwhile, the weight of the formwork body is reduced, the size of a cofferdam is reduced, and the construction efficiency is improved. The use amount of cofferdam steel structures is reduced, the excavation volume of the foundation pit is reduced, and the economic benefit is high. And meanwhile, the disassembly and assembly efficiency of the formwork body is effectively improved, the construction period is shortened, the turnover utilization rate of the formwork body is improved, and resource saving is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of steel sheet pile cofferdam construction, and particularly relates to an installation structure of a template for a non-linear steel sheet pile cofferdam. Background Art

[0002] Steel sheet pile cofferdams are widely used in the underwater foundation construction of bridges in China. A steel sheet pile is a steel structure body with a linkage device at the edge, and this linkage device can be freely combined to form a continuous and tight retaining wall or water retaining wall.

[0003] Steel sheet pile products are divided into two types according to the production process: cold-formed thin-walled steel sheet piles and hot-rolled steel sheet piles. The hot-rolled steel sheet pile specification divides the cross-section form of steel sheet piles into 5 categories: U-shaped steel sheet piles, Z-shaped steel sheet piles, straight-line steel sheet piles, H-shaped steel sheet piles, and cap-shaped steel sheet piles.

[0004] For U-shaped, Z-shaped, and cap-shaped steel sheet piles, their wall bodies are in a broken line shape, with greater stiffness to resist greater water head pressure. However, this structure is difficult to be directly used as a foundation formwork during the process of pouring foundation concrete, and it is not conducive to providing effective back support for weak-stiffness type foundation formworks.

[0005] Therefore, in view of this, an installation structure of a template for a non-linear steel sheet pile cofferdam is proposed to solve the above technical problems. Summary of the Utility Model

[0006] Aiming at the deficiencies of the existing technology, the utility model proposes an installation structure of a template for a non-linear steel sheet pile cofferdam to solve the technical problems that the existing non-linear steel sheet pile cofferdam is difficult to be directly used as a foundation formwork and cannot provide effective back support for weak-stiffness type foundation formworks as mentioned in the above background art.

[0007] To achieve the above object, the utility model provides the following technical solution. An installation structure of a template for a non-linear steel sheet pile cofferdam is used to support the foundation concrete poured on one side of the steel sheet pile main body, and includes:

[0008] A template main body, with a hanging plate arranged on one side, and hanging grooves are opened on the hanging plate;

[0009] Hanging nails, arranged at the corners of the steel sheet pile main body, and the hanging plate is hung on the hanging nails through the hanging grooves; and

[0010] A foam board, arranged in the cavity formed by the template main body and the steel sheet pile main body, and attached to the inner wall thereof.

[0011] In a preferred embodiment, the hanging plate and the template main body are fixedly connected by steel nails.

[0012] In a preferred embodiment, multiple groups of the template bodies are longitudinally arranged on each sheet pile body, and the multiple longitudinally arranged template bodies are connected by hanging plates.

[0013] In a preferred embodiment, multiple groups of hanging grooves are formed on the hanging plate, and the distance between every two adjacent groups of the hanging grooves is 50 cm. The distance between two adjacent hanging nails longitudinally on the sheet pile body is also 50 cm.

[0014] In a preferred embodiment, the hanging nails are welded to the sheet pile body.

[0015] In a preferred embodiment, the width of the template body is twice the width of the sheet pile body.

[0016] In a preferred embodiment, two laterally adjacent template bodies are fixed by tape.

[0017] In a preferred embodiment, an aluminum alloy plate is arranged at the bottom of the foam board.

[0018] In a preferred embodiment, a pull rope is arranged on the foam board. The pull rope is connected to the aluminum alloy plate, and the other end extends out of the foam board.

[0019] In a preferred embodiment, the template body is a bamboo plywood board.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] Before construction of this installation structure, the hanging plate is pre-fixed on the template body, and the hanging nails are pre-arranged at the corners of the sheet pile body. During the construction process, pumping water, installing the waling and the sheet pile body are carried out according to the traditional construction technology, and the construction area is excavated to the designed bottom elevation. Then the hanging plate is hung on the hanging nails through the hanging grooves to complete the connection between the sheet pile body and the template body. Then the foam board is installed in the cavity formed by the template body and the sheet pile body, so that the foam board fits with the inner wall of the cavity. Then the steel bars can be tied and the foundation concrete can be poured. During the process of pouring the foundation concrete, the template body at the sunken part of the sheet pile body is stably supported by the foam board. The structure of the sheet pile body is fully utilized, the requirement for the stiffness of the template body is weakened, the weight of the template body is reduced, the size of the cofferdam is reduced, the usage amount of the steel structure of the cofferdam is reduced, the excavation amount of the foundation pit is reduced, and the economic benefit is high. When the concrete strength reaches 2.5 Mpa, the foam board can be taken out. And when disassembling the sheet pile body, the template body can be taken out together through the cooperation of the hanging nails and the hanging plate, which effectively improves the disassembly and assembly efficiency of the template body, shortens the construction period, improves the turnover utilization rate of the template body, and is beneficial to resource conservation. Description of the Drawings

[0022] To more clearly illustrate the specific embodiments of the present utility model, the following will briefly introduce the drawings required for the specific embodiments. In all the drawings, the components or parts are not necessarily drawn to actual scale.

[0023] Figure 1 Schematic diagram of the connection structure between the steel sheet pile main body and the formwork main body in a non-linear steel sheet pile cofferdam formwork installation structure provided by the present utility model;

[0024] Figure 2 Cross-sectional schematic diagram of a non-linear steel sheet pile cofferdam formwork installation structure of the present utility model;

[0025] Figure 3 Schematic diagram of the longitudinal connection structure of the formwork main body in a non-linear steel sheet pile cofferdam formwork installation structure of the present utility model;

[0026] Figure 4 Schematic diagram of the structure of the hanging plate in a non-linear steel sheet pile cofferdam formwork installation structure of the present utility model;

[0027] Figure 5 Schematic diagram of the layout structure on the rock stratum of a non-linear steel sheet pile cofferdam formwork installation structure of the present utility model;

[0028] Reference numerals:

[0029] 1. Steel sheet pile main body; 2. Hanging nail; 3. Formwork main body; 4. Hanging plate; 5. Hanging groove; 6. Foam board; 7. Aluminum alloy plate; 8. Pulling rope. Specific embodiments

[0030] The following will further describe the present utility model in detail with reference to the drawings. It is necessary to point out here that the following specific embodiments are only used to further illustrate the present utility model and should not be construed as limiting the protection scope of the present utility model. Those skilled in the art can make some non-essential improvements and adjustments to the present utility model according to the above application content.

[0031] Embodiment:

[0032] As Figure 2 、 5 shown, the present utility model provides a non-linear steel sheet pile cofferdam formwork installation structure for supporting the foundation concrete poured on one side of the steel sheet pile main body 1, including a formwork main body 3, hanging nails 2 and a foam board 6. A hanging plate 4 is arranged on one side of the formwork main body 3, a hanging groove 5 is opened on the hanging plate 4, the hanging plate 4 is fixedly connected with the formwork main body 3 by steel nails, hanging nails 2 are arranged at the corners of the steel sheet pile main body 1, and the hanging nails 2 are welded to the steel sheet pile main body 1.

[0033] Before construction, the steel nail fixing of the formwork main body 3 and the hanging plate 4, as well as the welding of the steel sheet pile main body 1 and the hanging nail 2, are completed in the factory first. When the U-shaped steel sheet pile main body 1 is used, the width of the formwork main body 3 is twice the width of the steel sheet pile main body 1, so as to minimize the gap between adjacent two groups of formwork main bodies 3 when multiple groups of steel sheet pile main bodies 1 are assembled to form a cofferdam. Similarly, when the Z-shaped steel sheet pile main body 1 is used, the width of the formwork main body 3 is four times the width of the steel sheet pile main body 1. In addition, it can be understood that in some preferred embodiments, the formwork main body 3 is made of bamboo plywood, which can greatly reduce the weight and manufacturing cost of the formwork main body 3, and at the same time save the transportation cost.

[0034] As Figures 1 to 4 shown, in this embodiment, during construction, the steel sheet pile main body 1 is constructed first to form a cofferdam, and the hanging plate 4 is hung on the hanging nail 2 through the hanging groove 5 to complete the connection between the formwork main body 3 and the steel sheet pile main body 1. Multiple groups of formwork main bodies 3 are longitudinally arranged on each group of steel sheet pile main bodies 1, and the multiple groups of longitudinally arranged formwork main bodies 3 are connected through the hanging plate 4, which is convenient to adjust the height of the formwork main body 3 according to the pouring height of the foundation concrete.

[0035] As Figure 3 、 4 shown, in this embodiment, multiple groups of hanging grooves 5 are formed on the hanging plate 4, and the interval between every two adjacent groups of hanging grooves 5 is 50 cm. The interval between two adjacent hanging nails 2 longitudinally on the steel sheet pile main body 1 is also 50 cm, so as to save the use quantity of the hanging nails 2 on the premise of ensuring the installation stability of the formwork main body 3. After the formwork main body 3 is hung, the two adjacent formwork main bodies 3 horizontally are fixed by tape, so that multiple groups of formwork main bodies 3 form an integral body to carry out stable support.

[0036] As Figure 2 、 5 shown, in this embodiment, the foam board 6 is arranged in the cavity surrounded by the formwork main body 3 and the steel sheet pile main body 1 and fits with its inner wall. An aluminum alloy plate 7 is arranged at the bottom of the foam board 6. A pull rope 8 is arranged on the foam board 6, the pull rope 8 is connected with the aluminum alloy plate 7, and the other end extends out of the foam board 6.

[0037] After the formwork main body 3 is hung, the foam board 6 is placed in the cavity formed by the formwork main body 3 and the steel sheet pile main body 1 to provide effective back support for the formwork main body 3 and avoid the deformation and damage of the formwork main body 3 during the process of pouring the foundation concrete. When the concrete strength reaches 2.5 Mpa, the aluminum alloy plate 7 can be driven to move up by pulling the pull rope 8 to move the foam board 6 out of its installation position, so that the disassembly and assembly of the foam board 6 are very convenient.

[0038] The specific usage mode and beneficial effects of the utility model:

[0039] Before construction, the hanging plate 4 is pre-fixed on the template body 3, and the hanging nails 2 are arranged at the corners of the steel sheet pile body 1 in advance. During the construction process, pumping, installation of the waling and the steel sheet pile body 1 are carried out according to the traditional construction technology, and the construction area is excavated to the designed bottom elevation. Then, the hanging plate 4 is hung on the hanging nails 2 through the hanging grooves 5 to complete the connection between the steel sheet pile body 1 and the template body 3. Then, the foam board 6 is installed in the cavity formed by the template body 3 and the steel sheet pile body 1, so that the foam board 6 fits the inner wall of the cavity. Then, the steel bars can be tied and the foundation concrete can be poured. During the construction of the foundation concrete, the template body 3 at the sunken part of the steel sheet pile body 1 is stably supported by the foam board 6. The structure of the steel sheet pile body 1 is fully utilized, the requirement for the stiffness of the template body 3 is weakened, the weight of the template body 3 is reduced, the size of the cofferdam is reduced, the usage amount of the steel structure of the cofferdam is reduced, the excavation amount of the foundation pit is reduced, and the economic benefit is high. When the concrete strength reaches 2.5 Mpa, the foam board 6 can be taken out. And when the steel sheet pile body 1 is disassembled, the template body 3 can be taken out together through the cooperation of the hanging nails 2 and the hanging plate 4, which effectively improves the disassembly and assembly efficiency of the template body 3, shortens the construction period, improves the turnover utilization rate of the template body 3, and is beneficial to resource conservation.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments. Based on the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

Claims

1. A non-linear steel sheet pile cofferdam formwork installation structure for supporting the foundation concrete poured on one side of the main body (1) of the steel sheet pile, characterized in that, It includes: A template body (3) with a hanging plate (4) provided on one side, and a hanging groove (5) is formed on the hanging plate (4); A hanging nail (2) is provided at the corner of the steel sheet pile body (1), and the hanging plate (4) is hung on the hanging nail (2) through the hanging groove (5); and A foam board (6) is arranged in the cavity formed by the template body (3) and the steel sheet pile body (1) and is attached to the inner wall thereof.

2. The installation structure of a non-linear steel sheet pile cofferdam form according to claim 1, characterized in that: The hanging plate (4) is fixedly connected to the template body (3) by steel nails.

3. The installation structure of a non-linear steel sheet pile cofferdam formwork according to claim 1, characterized in that: Multiple groups of the template bodies (3) are longitudinally arranged on each group of the steel sheet pile bodies (1), and the longitudinally arranged multiple groups of the template bodies (3) are connected by the hanging plates (4).

4. The installation structure of a non-linear steel sheet pile cofferdam form according to claim 1, characterized in that: Multiple groups of hanging grooves (5) are formed on the hanging plate (4), and the distance between every two adjacent groups of the hanging grooves (5) is 50 cm. The distance between two longitudinally adjacent groups of the hanging nails (2) on the steel sheet pile body (1) is also 50 cm.

5. A non-linear steel sheet pile cofferdam formwork installation structure according to claim 1, characterized in that: The hanging nail (2) is welded to the steel sheet pile body (1).

6. The installation structure of a non-linear steel sheet pile cofferdam formwork according to claim 1, characterized in that: The width of the template body (3) is twice the width of the steel sheet pile body (1).

7. A non-linear steel sheet pile cofferdam formwork installation structure according to claim 1, characterized in that: Two laterally adjacent template bodies (3) are fixed by tape.

8. A non-linear steel sheet pile cofferdam formwork installation structure according to claim 1, characterized in that: An aluminum alloy plate (7) is provided at the bottom of the foam board (6).

9. A non-linear steel sheet pile cofferdam formwork installation structure according to claim 8, characterized in that: A pull rope (8) is provided on the foam board (6), the pull rope (8) is connected to the aluminum alloy plate (7), and the other end extends out of the foam board (6).

10. A non-linear steel sheet pile cofferdam formwork installation structure according to claim 1, characterized in that: The template body (3) is a bamboo plywood board.

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