Self-adaptive closing device and method adaptive to steel pipe pile supporting system

Abstract

The invention provides a self-adaptive closing device adaptive to a steel pipe pile support system, which comprises a fixing device and an adaptive device, the fixing device comprises profile steel and a horizontal steel plate at the lower end of the profile steel, the adaptive device comprises an arc-shaped steel plate arranged at the upper end of the profile steel, and the outer arc surface of the arc-shaped steel plate faces the profile steel. A connecting steel plate is arranged at one end away from the profile steel. The steel pipe pile supporting system can be suitable for various folding positions and various lock catches and has good universality, the upper flange of the profile steel is welded to the arc-shaped steel plate, the lower flange of the profile steel is welded to the inner side horizontal steel plate, so that the folding device has good integrity, the folding position is matched, and meanwhile the folding device is convenient to use. The folding device can be prevented from generating large displacement in the inserting and beating process, the good transverse connection and water seepage and sand gushing prevention effects can be achieved, and meanwhile the requirements of various folding positions are met.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering using steel pipe piles as a support system, and in particular relates to an adaptive closing device and method adapted to the steel pipe pile support system. Background Art

[0002] As a support system for land foundation pits and underwater cofferdams, steel pipe piles have good performance and advantages. They have high bearing capacity, strong bending and shear resistance, and fast construction speed. They are widely used in construction, transportation, water conservancy and other engineering fields, and play an important role in urban construction. During the construction of steel pipe piles, due to factors such as the splicing method of steel pipe piles, pile driving equipment, and guide frame installation, it is very easy to cause deviations in the closing of steel pipe piles, that is, the closing position is greater or less than the design distance, such as Figure 4 As shown, it is impossible to complete the closing of the steel pipe piles according to the original design. Therefore, it is necessary to develop a closing device with on-site adaptive capability. Summary of the invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes an adaptive closing device and method suitable for a steel pipe pile support system.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] An adaptive closing device adapted to a steel pipe pile support system includes a fixing device and an adapting device, wherein the fixing device includes a steel section and a horizontal steel plate at the lower end of the steel section, and the adapting device includes an arc-shaped steel plate arranged at the upper end of the steel section, wherein the outer arc surface of the arc-shaped steel plate faces the steel section, and a connecting steel plate is arranged at one end away from the steel section. Both the connecting steel plate and the arc-shaped steel plate are elastic steel plates; the diameter of the arc-shaped steel plate is smaller than the diameter of the adapted steel pipe pile, and the height of the steel section is the radius of the steel pipe piles on both sides of the closing position.

[0006] Furthermore, the steel section is an H-shaped steel, the upper flange of which is welded to the arc-shaped steel plate, and the lower flange is welded to the horizontal steel plate.

[0007] Furthermore, the width of the upper flange and the lower flange of the steel section is 400 mm, and the thickness of the web and the wing plate is 20 mm.

[0008] Furthermore, the connecting steel plate and the arc-shaped steel plate are both made of spring steel plates.

[0009] Furthermore, the diameter of the arc-shaped steel plate is one third of twice the pile diameter of the adapted steel pipe pile.

[0010] A method for closing a steel pipe pile support system using the above-mentioned adaptive closing device comprises the following steps:

[0011] First, determine the diameter of the adapted steel pipe piles, then make curved steel plates, straight steel plates, steel sections and horizontal steel plates, and weld them into an adaptive closing device; then drive the steel pipe piles on both sides of the adaptive closing position, and then position the adaptive closing device according to the inner horizontal steel plate of the fixing device, and finally drive the adaptive closing device, using the external soil pressure of the foundation pit or cofferdam, and the elasticity of the connecting steel plates and the curved steel plates, so that the adaptive closing device automatically fits the steel pipe piles on both sides of the closing position to achieve a water-stopping effect.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] The steel pipe pile support system provided by the invention can be applied to various closing positions and various locks, has good versatility, can play a good role in lateral connection and prevention of water seepage and sand gushing, and can meet the needs of various closing positions. The upper flange of the steel section is welded to the arc-shaped steel plate, and the lower flange is welded to the inner horizontal steel plate, so that the closing device has good integrity. While adapting to the closing position, it can prevent the closing device from causing large displacement during the insertion process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0015] Figure 1 A schematic diagram of an adaptive closing device provided by the present invention;

[0016] Figure 2 A schematic diagram of the installation coordination relationship between the adaptive closing device and the steel pipe piles on both sides of the closing position created by the present invention;

[0017] Figure 3 A schematic diagram of the adaptive closing device of the present invention after being attached to the steel pipe piles on both sides of the closing position;

[0018] Figure 4 It is a schematic diagram of the steel pipe pile in the prior art when deviation occurs during closing. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0023] An adaptive closing device adapted to a steel pipe pile support system, such as Figures 1 to 3 As shown, it includes a fixing device 2 and an adapting device 3, the fixing device includes a steel section 31 and a horizontal steel plate 32 at the lower end of the steel section, and the adapting device includes an arc-shaped steel plate 22 arranged at the upper end of the steel section, the outer arc surface of the arc-shaped steel plate faces the steel section, and the end away from the steel section is provided with a connecting steel plate 21. In an optional embodiment, the connecting steel plate and the arc-shaped steel plate are both made of elastic steel plates.

[0024] The diameter of the arc-shaped steel plate is smaller than the diameter of the adapted steel pipe pile, and the height of the steel section is the radius of the steel pipe piles 1 on both sides of the closing position. Since the arc-shaped steel plate and the connecting steel plate of the adapter device have good elasticity, under the external soil pressure of the foundation pit or cofferdam, the adapter device can effectively fit with the steel pipe piles on both sides of different closing positions. The fitting point between the adapter device and the steel pipe piles on both sides of the closing position is the tangent point position 4 of the arc-shaped steel plate and the corresponding steel pipe pile. Therefore, this adaptive closing device can be applied to the closing positions of steel pipe piles of various sizes, locking forms, and construction environments, and can greatly improve the closing speed and quality of the steel pipe pile support system.

[0025] As an example, the steel section adopts H-shaped steel, whose upper flange is welded to the arc steel plate, and the lower flange is welded to the horizontal steel plate. The width of the upper and lower flanges of the steel section is 400mm, and the thickness of the web and wing plate is 20mm. The connecting steel plate and the arc steel plate are both spring steel plates. It should be noted that the width of the horizontal steel plate is greater than the width of the closing position, which can prevent the closing device from making a large displacement to the outside of the foundation pit or cofferdam, and at the same time can limit the inward deviation of the device, thereby making the fixing device and the adapter cooperate with each other to form a closed area at the closing position, which can play a good connection role and prevent water seepage and sand surge.

[0026] The diameter of the arc-shaped steel plate is one third of the twice pile diameter of the adapted steel pipe pile, and the connecting steel plate is welded at the end (opening) of the arc-shaped steel plate to improve the overall stability of the structure. The closing device provided by the invention is welded by a fixing device and an adapting device. The adapting device is composed of an arc-shaped steel plate and a connecting steel plate with good elasticity, and is nested outside the cofferdam closing position 5. It is positioned by a fixing device and automatically locks the steel pipe pile with its own good elasticity, and can be used in a variety of closing positions. It has the effect of facilitating the closing of the steel pipe pile support system.

[0027] A method for closing a steel pipe pile support system using the above-mentioned adaptive closing device comprises the following steps:

[0028] First, determine the diameter of the adapted steel pipe piles, then make curved steel plates, straight steel plates, steel sections and horizontal steel plates, and weld them into an adaptive closing device; then insert and drive the steel pipe piles 1 on both sides of the adaptive closing position, and then position the adaptive closing device according to the inner horizontal steel plate of the fixing device, and finally insert and drive the adaptive closing device, utilizing the external soil pressure of the foundation pit or cofferdam, utilizing the elasticity of the connecting steel plates and the curved steel plates, and producing adaptive deformation when the connecting steel plates and the curved steel plates are under pressure, so that the adaptive closing device automatically fits the steel pipe piles on both sides of the closing position to exert a water-stopping effect, thereby effectively preventing water seepage and sand gushing.

[0029] Due to the characteristics of the elastic material of the adapter device, it is only necessary to measure and position the fixing device. During the insertion and driving process, the adapter device can quickly, efficiently and high-quality fit the steel pipe piles on both sides of the closing position to complete the closing work.

[0030] In addition, when the structure has special working conditions such as waterproofing and anti-seepage, the closing position of the steel pipe pile is the weak position of the support system of the foundation pit or cofferdam, and the closing position needs special reinforcement. Concrete and other materials can be poured between the fixing device and the adapter of the device, thereby enhancing the overall strength and rigidity of the support system and improving the overall safety. Moreover, the closing device can be prefabricated according to the size of the steel pipe pile, and there is no need to determine the closing width of the closing position, which can greatly shorten the construction period. At the same time, it can avoid unnecessary cutting and adjustment of the steel pipe pile, thereby reducing material loss and reducing material waste during the construction process.

[0031] The steel pipe pile support system provided by the invention can be applied to various closing positions and various locks, has good versatility, can play a good role in lateral connection and prevention of water seepage and sand gushing, and can meet the needs of various closing positions. The upper flange of the steel section is welded to the arc-shaped steel plate, and the lower flange is welded to the inner horizontal steel plate, so that the closing device has good integrity. While adapting to the closing position, it can effectively prevent the closing device from causing large displacement during the insertion process.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An adaptive closing device adapted to a steel pipe pile support system, characterized in that: It includes a fixing device and an adapting device. The fixing device includes a steel section and a horizontal steel plate at the lower end of the steel section. The adapting device includes an arc-shaped steel plate arranged at the upper end of the steel section. The outer arc surface of the arc-shaped steel plate faces the steel section, and a connecting steel plate is arranged at the end away from the steel section.

2. The adaptive closing device for the steel pipe pile support system according to claim 1, characterized in that: The steel section adopts H-shaped steel, the upper flange of which is welded to the arc steel plate, and the lower flange is welded to the horizontal steel plate.

3. The adaptive closing device for the steel pipe pile support system according to claim 2 is characterized in that: The width of the upper flange and the lower flange of the steel section is 400 mm, and the thickness of the web and the wing plate is 20 mm.

4. The adaptive closing device for the steel pipe pile support system according to claim 1, characterized in that: The connecting steel plates and the arc-shaped steel plates are both made of spring steel plates.

5. The adaptive closing device for the steel pipe pile support system according to claim 1, characterized in that: The diameter of the arc-shaped steel plate is one third of twice the pile diameter of the adapted steel pipe pile.

6. A method for closing a steel pipe pile support system using the adaptive closing device according to any one of claims 1 to 5, characterized in that: The steps include: First, determine the diameter of the corresponding steel pipe piles, then make arc-shaped steel plates, straight steel plates, steel sections and horizontal steel plates, and weld them into an adaptive closing device; then insert and drive the steel pipe piles on both sides of the adaptive closing position, and then position the adaptive closing device according to the inner horizontal steel plate of the fixing device, and finally insert and drive the adaptive closing device, and use the external soil pressure of the foundation pit or cofferdam to make the adaptive closing device automatically fit the steel pipe piles on both sides of the closing position to achieve a water-stopping effect.

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