Anti-falling safety device and deep foundation pit supporting system construction method

Abstract

The invention provides an anti-falling safety device and a deep foundation pit supporting system construction method, and the anti-falling safety device comprises a pipe body clamping part which comprises a plurality of pipe body clamps which are connected with one another; the lifting lug is slotted so as to be detachably connected with the supporting structure; the connecting part comprises a connecting main body, and two ends of the connecting main body are respectively connected with the lifting lug and the pipe body clamp. The invention provides a construction method of a deep foundation pit supporting system. A supporting structure is arranged along the periphery of a foundation pit; the pipe body is erected through the supporting structure, the pipe body and the supporting structure are detachably connected with the anti-falling safety device in a welding-free mode, and when the pipe body falls off accidentally, the anti-falling safety device is tensioned and stressed to suspend the pipe body. The construction method has the beneficial effects that the safety in the construction process can be guaranteed; and the welding-free installation mode can ensure that construction components are recycled, the construction efficiency can be improved, and the construction cost can be ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a fall prevention safety device and a deep foundation pit support system construction method. Background Art

[0002] In the existing technology, the supporting steel pipe plays an important role in the Larsen pile support system of deep foundation pits. In order to prevent the supporting steel pipe from accidentally falling off, the lifting ears are usually welded at both ends of the steel rope, and then the corresponding lifting ears are welded to the supporting steel pipe or steel sheet pile. When the supporting steel pipe accidentally falls off, it can also be pulled by the steel rope to avoid the risk of falling and injuring people, and provide sufficient evacuation time for the construction personnel below. However, the process of welding the lifting ears with steel sheet piles or supporting steel pipes requires a lot of manpower costs, and the welding position of the lifting ears causes irreparable defects to the steel sheet piles and supporting steel pipes, which seriously affects their subsequent use. There are technical problems such as connecting the steel rope with the supporting steel pipe or steel sheet pile by welding the lifting ears, high construction labor costs, and irreparable defects in the supporting steel pipe or steel sheet pile at the welding point. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a fall prevention safety device and a deep foundation pit support system construction method, which adopts a welding-free method and is particularly suitable for the construction of a support system of Larsen steel sheet piles combined with internal supports. It can also be promoted for the dismantling of horizontal components of steel structures or the maintenance of pipeline equipment.

[0004] The technical solution adopted by the present invention is: a fall prevention safety device, including a tube body clamping part, which includes a plurality of mutually connected tube body clamps; a lifting ear, which is grooved so as to be detachably connected to a supporting structure; and a connecting part, which includes a connecting body, and the two ends of the connecting body are respectively connected to the lifting ear and the tube body clamp.

[0005] Furthermore, the connecting portion also includes a first connecting piece, the first connecting piece is connected to the connecting body, and the lifting ear is inserted into the first connecting piece.

[0006] Furthermore, each tube body clamp includes a clamping body, a wing plate is arranged at the end of the clamping body, adjacent clamping bodies are connected by the wing plate, and the connecting body is connected to the corresponding wing plate.

[0007] Furthermore, the connecting portion further comprises a second connecting member, which is connected to the connecting body and is clamped between the two wing plates.

[0008] Furthermore, the wing plates are provided with bolt holes, the tube body clamping portion further comprises a plurality of bolt assemblies for connecting adjacent wing plates, and the second connecting member is provided with connecting holes, which can correspond to the bolt holes to install the bolt assemblies.

[0009] Furthermore, the tube body clamp is provided with an arc-shaped contact surface, and the arc-shaped contact surface is adapted to the outer diameter of the tube body.

[0010] Furthermore, the length of the connecting body is adjustable. The connecting body includes an adjusting pipe and threaded adjusting rods provided at both ends of the adjusting pipe. The two threaded adjusting rods have opposite thread directions and are respectively threadedly connected to the adjusting pipe. The pipe clamp and the lifting lug are respectively connected to the corresponding threaded adjusting rods.

[0011] The present invention also provides a construction method for a deep foundation pit support system, which utilizes the above anti-falling safety device and includes the following construction steps: arranging a support structure along the periphery of the foundation pit; erecting a pipe body through the support structure; detachably connecting the lifting lug to the support structure and connecting a plurality of pipe clamps to each other to sleeved on the outer side of the pipe body. When the pipe body falls off, the anti-falling safety device is stressed to suspend the pipe body.

[0012] The advantages and positive effects of the present invention are as follows: Due to the adoption of the above technical solutions, the safety during the construction process can be guaranteed; the installation method without welding can ensure the recycling of construction components and protect the construction environment; it has the advantages of improving construction efficiency and safety and reducing construction costs. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of an embodiment of the anti-falling safety device of the present invention;

[0014] Figure 2 is a schematic plan view of an embodiment of the anti-falling safety device of the present invention;

[0015] Figure 3 is a schematic side view of a construction scenario of the deep foundation pit support system of the present invention;

[0016] Figure 4 is a schematic plan view of a construction scenario of the deep foundation pit support system of the present invention;

[0017] In the figure:

[0018] 1, pipe clamp; 2, lifting lug; 3, connecting part

[0019] 4, pipe body; 5, sheet pile; 6, corbel

[0020] 7, waling; 11, clamping main body; 12, wing plate

[0021] 13, bolt assembly; 21, lifting lug notch; 31, connecting body

[0022] 32, first connecting piece; 33, second connecting piece; 311, adjusting pipe

[0023] 312, threaded adjusting rod Detailed Embodiments

[0024] The embodiments of the present invention will be described below in conjunction with the accompanying drawings. The described embodiments are only a part of the embodiments of the invention, rather than all of the embodiments.

[0025] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals represent the same or similar units or units with the same or similar functions throughout.

[0026] The embodiments described by referring to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation to the present invention. In the description of the present invention, it should be understood that terms such as "installation", "connection", "fixation", etc. should be understood in a broad sense, which can be direct connection, installation or fixation, or indirect connection, installation or fixation. The present invention does not limit this.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the structure or unit referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0028] As Figures 1 to 4 shown, a schematic diagram of an embodiment of a fall prevention safety device of the present invention includes a pipe body clamping part, which includes a plurality of interconnected pipe clamps 1; a lifting lug 2, which can be prepared from a steel plate, and the lifting lug 2 is grooved for detachable connection with the support structure in a welding-free manner; a connecting part 3, which includes a connecting body 31, and both ends of the connecting body 31 are respectively connected to the lifting lug 2 and the pipe clamp 1. Preferably, the pipe body clamping part is a split structure, and the plurality of pipe clamps 1 are detachably connected to each other. The pipe body clamping part can be connected to the pipe body 4 for support in a welding-free manner; the grooved lifting lug 2 can achieve a welding-free installation method, and is clamped to the support structure through the lug slot 21 to be hung on the support structure. The structure of this embodiment is simple and can be quickly installed. It can not only play a pulling role when the pipe body 4 accidentally falls off, but also avoid defects in the support structure or the pipe body 4 caused by welding.

[0029] In this embodiment, the connecting part 3 further includes a first connecting piece 32, the first connecting piece 32 is connected to the connecting body 31, and the lifting lug 2 is inserted into the first connecting piece 32. Preferably, the first connecting piece 32 is a U-shaped piece, and the opening width thereof is adapted to the lifting lug 2. The lifting lug 2 is provided with fixing holes, the first connecting piece 32 is provided with mounting holes through which it is penetrated, and the lifting lug 2 is inserted into the opening of the first connecting piece 32 and the fixing holes correspond to the mounting holes to insert fixing bolts.

[0030] In this embodiment, each pipe clamp 1 includes a clamping main body 11. Wing plates 12 are arranged at the ends of the clamping main body 11. Adjacent clamping main bodies 11 are connected through the wing plates 12, and the connecting main body 31 is connected to the corresponding wing plates 12. Preferably, the number of clamping main bodies 11 included in each pipe clamping part is two and they are symmetrically arranged.

[0031] In this embodiment, the connecting part 3 further includes a second connecting piece 33. The second connecting piece 33 is connected to the connecting main body 31, and the second connecting piece 33 is clamped between two wing plates 12.

[0032] In this embodiment, bolt holes are formed in the wing plates 12. The pipe clamping part further includes a plurality of bolt assemblies 13 for connecting adjacent wing plates 12. Connecting holes are formed in the second connecting piece 33, and the connecting holes can correspond to the bolt holes to install the bolt assemblies 13. Preferably, the number of bolt holes formed in the wing plates 12 for clamping the second connecting piece 33 is not less than the number of connecting holes of the corresponding second connecting piece 33. In this embodiment, the number of bolt holes formed in the wing plates 12 for clamping the second connecting piece 33 is greater than the number of connecting holes of the corresponding second connecting piece 33. A plurality of pipe clamps 1 can be pre-tightened through some bolt holes first and then sleeved outside the pipe 4, and the remaining bolt holes are used to correspond to the connecting holes of the second connecting piece 33 to realize the connection between the second connecting piece 33 and the pipe clamp 1. In this embodiment, a plurality of bolt holes can be partly used for pre-tightening the pipe 4 and partly used for connecting with the second connecting piece 33. The installation method is flexible, convenient to operate, and convenient for improving the construction efficiency.

[0033] In this embodiment, the pipe clamp 1 is provided with an arc-shaped contact surface, and the arc-shaped contact surface is adapted to the outer diameter of the pipe 4. Preferably, the arc-shaped contact surface is arranged on the clamping main body 11, which can better ensure the stability of the connection with the pipe 4, and can also reduce the external damage to the pipe 4, and better ensure the reuse of the pipe 4 after disassembly. Preferably, the clamping main body 11 and the wing plates 12 are integrally formed, which can improve the safety and stability during use. The pipe clamp 1 is made of flat steel, the middle part of which is processed into a semi-circular shape, and wing plates 12 with hole positions are respectively extended at both ends, and the structures of the wing plates 12 at both ends can be made into the same structure or different structures according to requirements. The radial cross-section curvature of the clamping main body 11 matches the outer diameter of the pipe 4. This embodiment can ensure the constraint effect on the pipe 4 and at the same time ensure the appearance quality of the pipe 4.

[0034] In this embodiment, the length of the connecting main body 31 is adjustable. The connecting main body 31 includes an adjusting pipe 311 and threaded adjusting rods 312 arranged at both ends of the adjusting pipe 311. The two threaded adjusting rods 312 have opposite thread directions and are respectively threadedly connected to the adjusting pipe 311. The pipe clamp 1 and the lifting lug 2 are respectively connected to the corresponding threaded adjusting rods 312.

[0035] In this embodiment, the lifting lug 2 can be selected with a suitable size according to the construction requirements, and anti-slip patterns can also be provided in the notch 21 of the lifting lug to improve the fixing strength.

[0036] On the other hand, the present invention also provides a construction method for a deep foundation pit support system, which uses the above anti-falling safety device and includes the following construction steps:

[0037] The support structure is arranged along the perimeter of the foundation pit, and the pipe body is erected through the support structure. Preferably, the Larsen type interlocking steel sheet piles 5 are arranged along the foundation pit to form the support structure, and the bearing corbels 6, the support collar 7 are installed at the predetermined elevation position of the steel sheet piles 5, and the pipe body 4 is erected; the pipe body 4 for support is arranged horizontally and its axis direction is orthogonal to the excavation surface of the foundation pit, and the two ends of the pipe body 4 are symmetrically provided with the steel sheet piles 5.

[0038] The pipe body 4 and the support structure are respectively connected to the anti-falling safety device in a non-welding manner. Preferably, both ends of the pipe body 4 are connected to the support structure through the anti-falling safety device. When installing the anti-falling safety device, a marking can be made first at a predetermined position from the end of the pipe body 4, the pipe body clamp 1 is installed at the corresponding position and pre-tightened by a bolt assembly 13 with a suitable quantity, and a plurality of pipe body clamps 1 are connected to each other to be sleeved outside the pipe body 4. In this embodiment, through a curved surface design adapted to the outside of the pipe body 4, a plurality of pipe body clamps 1 are covered outside the pipe body 4. The second connecting member 33 is inserted between the corresponding two wing plates 12 and connected by the remaining bolt assemblies 13. The lifting lug 2 is detachably connected to the support structure. In this embodiment, the lifting lug 2 can be clamped with the corresponding steel sheet pile 5 through the notch 21 of the lifting lug and hung on the corresponding steel sheet pile 5. The length of the connecting body 31 is adjusted to connect the pipe body clamp 1, the connecting part 3 and the lifting lug 2 to each other and keep them in a pre-tightened state, ensuring that the anti-falling safety device is in a non-loaded pre-tensioned state, so as to avoid affecting the service life of the anti-falling safety device due to long-term stress and ensure the protection effect when the pipe body 4 accidentally falls off.

[0039] When the pipe body 4 accidentally falls off, the anti-falling safety device is tensioned and enters the stressed state to suspend the pipe body 4, forming a protection to prevent the pipe body 4 from falling and causing personal injuries, and can provide enough evacuation time for the construction workers below the pipe body 4, better ensuring the construction safety.

[0040] This embodiment is convenient for quick installation through the split structure, and the installation process adopts a non-welding method, better ensuring that the steel sheet piles 5 and the pipe body 4 of the support structure are not damaged by welding. The active anti-fall protection is realized through the anti-falling safety device during the construction process, and the adjustable connecting part is better adapted to various construction environments, better meeting the requirements for the device to be recycled in different construction environments and ensuring the construction cost.

[0041] The above has described the embodiments of the present invention in detail, but the above content is only the preferred embodiments of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention shall still fall within the scope covered by the patent of the present invention.

Claims

1. A fall prevention safety device, characterized in that, Comprising: A pipe body clamping part, which includes a plurality of interconnected pipe body clamps; A lifting lug, which is slotted for detachable connection with a support structure; A connecting part, which includes a connecting body, and two ends of the connecting body are respectively connected to the lifting lug and the pipe body clamp.

2. The anti-falling safety device according to claim 1, characterized in that: The connecting part further includes a first connecting piece, the first connecting piece is connected to the connecting body, and the lifting lug is inserted into the first connecting piece.

3. The anti-falling safety device according to claim 1, characterized in that: Each pipe body clamp includes a clamping body, wing plates are arranged at the ends of the clamping body, adjacent clamping bodies are connected through the wing plates, and the connecting body is connected to the corresponding wing plates.

4. The anti-falling safety device according to claim 3, characterized in that: The connecting part further includes a second connecting piece, the second connecting piece is connected to the connecting body, and the second connecting piece is clamped between two wing plates.

5. The anti-falling safety device according to claim 4, characterized in that: The wing plates are provided with bolt holes, the pipe body clamping part further includes a plurality of bolt assemblies for connecting adjacent wing plates, the second connecting piece is provided with connecting holes, and the connecting holes can correspond to the bolt holes to install the bolt assemblies.

6. The anti-falling safety device according to any one of claims 1-5, characterized in that: The pipe body clamp is provided with an arc-shaped contact surface, and the arc-shaped contact surface is adapted to the outer diameter of the pipe body.

7. The anti-falling safety device according to any one of claims 1-5, characterized in that: The length of the connecting body is adjustable. The connecting body includes an adjusting pipe and threaded adjusting rods arranged at both ends of the adjusting pipe. The two threaded adjusting rods have opposite thread directions and are respectively threadedly connected to the adjusting pipe. The pipe body clamp and the lifting lug are respectively connected to the corresponding threaded adjusting rods.

8. A construction method for a deep foundation pit support system, using the anti-falling safety device according to any one of claims 1-7, characterized in that, Including the following construction steps: Layout a support structure along the perimeter of the foundation pit; Erect a pipe body through the support structure; Detachably connect the lifting lug to the support structure and connect a plurality of pipe body clamps to each other to sleeved outside the pipe body. When the pipe body falls off, the anti-falling safety device is stressed to suspend the pipe body.

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