Foundation pit peripheral frame pipe supporting tool

Abstract

A foundation pit peripheral frame pipe supporting tool comprises a U-shaped frame, bayonets are symmetrically formed in the U-shaped frame, and the bayonets are clamped in a Larsen steel sheet pile groove; a supporting pipe is welded at the upper part of the U-shaped frame; the bottom of the vertical pipe of the frame pipe is inserted into the supporting pipe; the structure further comprises an inserting block which is inserted into an inner space defined by the U-shaped frame and the Larsen steel sheet piles. According to the tool, the Larsen steel sheet pile can be used as a support to support the frame pipe, the U-shaped frame is prevented from inclining and shaking by adopting the insertion block, meanwhile, the outer side part of the U-shaped frame is inserted into a soil body around a foundation pit, the erected frame pipe is good in stability, and potential safety hazards of traditional frame pipe erection are eliminated.

Description

Technical Field

[0001] The utility model belongs to the field of foundation pit construction, and particularly relates to a foundation pit periphery pipe support tool. Background Art

[0002] When excavating deep foundation pits, Larsen steel sheet piles are generally used as support inside the foundation pit to ensure the safety of the foundation pit. It is also necessary to set up pipe racks around the foundation pit for protection to avoid danger and protect pedestrians and the surrounding environment. Since it is difficult to find fixed points around the foundation pit, the vertical pipes of the pipe racks are generally driven into the ground to a certain depth as support points. However, if the soil around the foundation pit is loose, this method of fixing the pipe racks will pose a safety hazard and cannot ensure the stability of the pipe racks. Summary of the invention

[0003] The problem to be solved by the present invention is to overcome the shortcomings of the background technology and provide a foundation pit perimeter pipe support tool.

[0004] The present invention is achieved through the following technical solutions:

[0005] A pipe support tool for the periphery of a foundation pit comprises a U-shaped frame, wherein two side plates of the U-shaped frame are symmetrically provided with bayonet holes, the lower ends of the bayonet holes are open, and the bayonet holes are clamped in the grooves of Larsen steel sheet piles; a support pipe is welded to the upper part of the outer opening of the U-shaped frame, the support pipe is located outside the bayonet hole, the bottom end of the support pipe is closed, the inner diameter of the support pipe is equal to the outer diameter of the vertical pipe of the frame pipe, a horizontal through hole is provided on the support pipe, the bottom of the vertical pipe of the frame pipe is provided with a through hole corresponding to the through hole, the bottom of the vertical pipe of the frame pipe is inserted into the support pipe and fixed together by bolts passing through the through hole and the through hole; and an insert block is also included, the insert block is inserted into the internal space surrounded by the U-shaped frame and the Larsen steel sheet piles, the insert block is wide at the top and narrow at the bottom, and the width of the upper end of the insert block is greater than the horizontal spacing between the inner side surface of the U-shaped frame and the Larsen steel sheet piles.

[0006] Preferably, the U-shaped frame has a height of 20-40 cm.

[0007] Preferably, the longitudinal section of the bayonet is a rectangle or a trapezoid that is narrow at the top and wide at the bottom.

[0008] Preferably, when the longitudinal section of the bayonet is rectangular, the bayonet width is equal to the thickness of the Larsen steel sheet pile.

[0009] Preferably, when the longitudinal section of the bayonet is a trapezoid that is narrow at the top and wide at the bottom, the middle width of the bayonet is greater than the thickness of the Larsen steel sheet pile, and the width of the uppermost end of the bayonet is not greater than the thickness of the Larsen steel sheet pile.

[0010] Preferably, the insert block is a wooden insert block.

[0011] The support tool of the present invention can use Larsen steel sheet piles as support points to support the pipe rack. Insert blocks are used to prevent the U-shaped frame from tilting and shaking. At the same time, the outer part of the U-shaped frame is inserted into the soil around the foundation pit. The pipe rack thus erected has good stability and multiple safety supports, eliminating the safety hazards of traditional pipe rack erection. The structure is simple, the installation is quick, and the rack can be used cyclically. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the state structure used in this embodiment;

[0013] Figure 2 This is a schematic diagram of the structure of the present embodiment in use from another angle;

[0014] Figure 3 This is a schematic diagram of the structure of this embodiment;

[0015] Figure 4 It is a partial structural diagram of this embodiment.

[0016] In the figure, 1 is U-shaped frame, 2 is bayonet, 3 is Larsen steel sheet pile, 4 is support pipe, 5 is vertical pipe, 6 is through hole, 7 is through hole, 8 is bolt, and 9 is plug-in block. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0018] The foundation pit perimeter pipe support tool of this embodiment is used to provide a fixing point for the protection pipe, and includes a U-shaped frame 1, wherein the U-shaped frame 1 includes two vertical rectangular side panels, and the two rectangular side panels are connected together by a rectangular inner side panel to form a U shape. Bayonet 2 is symmetrically arranged on the two side panels of the U-shaped frame 1, and the bayonet 2 opens downward, and the bayonet 2 is used to be clamped in the groove of the Larsen steel sheet pile 3. The longitudinal section of the bayonet 2 can be rectangular. When the longitudinal section of the bayonet 2 is rectangular, the width of the bayonet 2 is equal to the thickness of the Larsen steel sheet pile 3, that is, the bayonet 2 can just be tightly clamped in the groove of the pile head of the Larsen steel sheet pile 3 from top to bottom. In order to make the tool of the present invention applicable to Larsen steel sheet piles 3 of different thicknesses, the bayonet 2 can be designed to be a trapezoidal shape, that is, the longitudinal section of the bayonet 2 can be a trapezoid that is narrow at the top and wide at the bottom. When the bayonet 2 is a trapezoid that is narrow at the top and wide at the bottom, in order to further ensure that the tool can be firmly connected with the Larsen steel sheet pile 3, it is preferred that the width in the middle of the bayonet 2 is greater than the thickness of the Larsen steel sheet pile 3, and the width of the upper end of the bayonet 2 is not greater than the thickness of the Larsen steel sheet pile 3. In this way, it can be ensured that at least half of the height of the bayonet 2 of the U-shaped frame 1 is stuck on the pile head of the Larsen steel sheet pile 3, and the U-shaped frame 1 will not be too short and not firmly connected with the Larsen steel sheet pile 3. The height of the U-shaped frame 1 is preferably 20-40 cm. When the U-shaped frame 1 is clamped on the head of the Larsen steel sheet pile 3, the outer portion of the clamping opening 2 of the U-shaped frame 1 is inserted into the soil around the outer side of the Larsen steel sheet pile 3, that is, into the soil around the foundation pit, while the inner portion of the clamping opening 2 of the U-shaped frame 1 is located inside the Larsen steel sheet pile 3, and encloses a space with the Larsen steel sheet pile 3. The outer portion mentioned above refers to the direction away from the foundation pit, and the inner portion refers to the direction close to the foundation pit.

[0019] In order to allow the U-shaped frame 1 to be tightly stuck on the Larsen steel sheet pile 3, it also includes an insert block 9, which is preferably a wooden insert block. The insert block 9 is inserted into the internal space enclosed by the inner plate of the U-shaped frame 1 and the Larsen steel sheet pile 3. The insert block 9 is wide at the top and narrow at the bottom. The width of the upper end of the insert block 9 is greater than the horizontal distance between the inner plate of the U-shaped frame 1 and the Larsen steel sheet pile 3, ensuring that the insert block 9 can fill the space enclosed by the U-shaped frame 1 and the Larsen steel sheet pile 3, so that the U-shaped frame 1 can be tightly stuck on the Larsen steel sheet pile 3 without tilting or shaking.

[0020] A support tube 4 is welded to the upper part of the outer opening of the U-shaped frame 1, and the lower part of the support tube 4 is welded to the two side plates of the U-shaped frame 1, and the support tube 4 is located outside the bayonet 2. The bottom end of the support tube 4 is closed, and the upper end is open. The support tube 4 is used to plug in the vertical tube 5 of the rack pipe, so the inner diameter of the support tube 4 is equal to the outer diameter of the vertical tube 5 of the rack pipe. The rack pipe for foundation pit protection includes a vertical tube 5 and a horizontal tube connected to the vertical tube 5. In this embodiment, only the vertical tube 5 is drawn, and the entire rack pipe and horizontal tube are not drawn. Originally, the vertical tube 5 is generally directly driven into the soil around the foundation pit. The present invention changes the support point of the vertical tube 5 of the rack pipe, and sets the support point of the vertical tube 5 on the U-shaped frame 1, and then uses the Larsen steel sheet pile 3 as the support point, which greatly improves the reliability. To further ensure the stability of the vertical pipe 5, a horizontal through hole 6 is provided on the support pipe 4, and a through hole 7 corresponding to the through hole 6 is provided at the bottom of the vertical pipe 5 of the rack pipe. After the vertical pipe 5 is inserted into the support pipe 4, the bottom is fixed together by bolts 8 passing through the through hole 6 and the through hole 7.

[0021] When the present invention is used, several U-shaped frames 1 of the present invention are clamped at the grooves of the pile heads of the Larsen steel sheet piles 3 around the foundation pit, and the spacing between the U-shaped frames 1 is consistent with the spacing between the vertical pipes 5 of the rack pipes, so as to ensure that each vertical pipe 5 has a support point. When clamping, the bayonet 2 clamps the Larsen steel sheet piles 3 downward, and the U-shaped frame 1 outside the bayonet 2 is inserted into the soil, and then the plug block 9 is inserted into the space surrounded by the U-shaped frame 1 and the Larsen steel sheet piles 3, and the plug block 9 is pushed down hard so that the plug block 9 can be tightly inserted into the space surrounded by the U-shaped frame 1 and the Larsen steel sheet piles 3. A hammer can be used to hit it down several times, and then the vertical pipe 5 of the rack pipe is inserted into the outer support pipe 4, and then the vertical pipe 5 and the support pipe 4 are fixed together by bolts 8, so that the rack pipe is fixed around the foundation pit, and the support points are the soil and the Larsen steel sheet piles 3, eliminating the safety hazards of traditional rack pipe erection.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pipe support tool for the perimeter of a foundation pit, characterized in that: The invention comprises a U-shaped frame (1), wherein two side plates of the U-shaped frame (1) are symmetrically provided with bayonet holes (2), the lower end of the bayonet holes (2) being open, and the bayonet holes (2) being stuck in the grooves of the Larsen steel sheet piles (3); a support pipe (4) is welded to the upper part of the outer opening of the U-shaped frame (1), the support pipe (4) being located outside the bayonet holes (2), the bottom end of the support pipe (4) being closed, the inner diameter of the support pipe (4) being equal to the outer diameter of the vertical pipe (5) of the frame pipe, and a horizontal through hole (6) being provided on the support pipe (4), and the frame pipe The bottom of the vertical tube (5) is provided with a through hole (7) corresponding to the through hole (6); the bottom of the vertical tube (5) of the frame pipe is inserted into the support tube (4) and fixed together by bolts (8) passing through the through hole (6) and the through hole (7); and also includes an insert block (9), the insert block (9) is inserted into the internal space surrounded by the U-shaped frame (1) and the Larsen steel sheet pile (3), the insert block (9) is wide at the top and narrow at the bottom, and the width of the upper end of the insert block (9) is greater than the horizontal distance between the inner side surface of the U-shaped frame (1) and the Larsen steel sheet pile (3).

2. The foundation pit perimeter pipe support tool according to claim 1, characterized in that: The height of the U-shaped frame (1) is 20-40 cm.

3. The foundation pit perimeter pipe support tool according to claim 1, characterized in that: The longitudinal section of the bayonet (2) is a rectangle or a trapezoid that is narrow at the top and wide at the bottom.

4. The foundation pit perimeter pipe support tool according to claim 1, characterized in that: When the longitudinal section of the bayonet (2) is rectangular, the width of the bayonet (2) is equal to the thickness of the Larsen steel sheet pile (3).

5. The foundation pit perimeter pipe support tool according to claim 1, characterized in that: When the longitudinal section of the bayonet (2) is a trapezoid that is narrow at the top and wide at the bottom, the middle width of the bayonet (2) is greater than the thickness of the Larsen steel sheet pile (3), and the width of the uppermost end of the bayonet (2) is not greater than the thickness of the Larsen steel sheet pile (3).

6. The foundation pit perimeter pipe support tool according to claim 1, characterized in that: The insert block (9) is a wooden insert block.

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