Light combined supporting structure for trench excavation

Abstract

The light combined type supporting structure for trench excavation comprises a channel steel stand column and a supporting piece limited to the side edge of the channel steel stand column, a plurality of through holes are formed in the channel steel stand column in a penetrating mode, limiting pieces are arranged in the through holes in a matched mode, and a supporting ring is rotationally matched with the lowest limiting piece. An inserting hole is formed in the side wall of the supporting ring, a supporting rod is arranged in the inserting hole in a matched mode, and the upper end of the supporting rod is buckled and pressed by one of the limiting pieces on the upper portion. The structure is easy to produce and manufacture, meanwhile, the weight is light, a combined installation mode is adopted, and the disassembly and assembly efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of trench support, and in particular to a light combined support structure for trench excavation. Background Art

[0002] At present, in the process of pipeline construction, the common support forms according to the trench depth are channel steel support and Larsen steel sheet pile support. When the trench depth does not exceed 3m, channel steel support is used. This support has appropriate strength and can be applied to any geological conditions. The cost is medium. When the trench depth is greater than 3m, Larsen steel sheet pile support is used. This support has the highest water stop and strength, but also the highest cost.

[0003] In sewage treatment projects, many sewage pipes are excavated to a depth of no more than 3m, urban roads are narrow, and the construction area is mostly two-way two-lane. There are many residential buildings around, and it is an old urban area. The use of channel steel and Larsen steel sheet pile support requires piling equipment to enter the site. The vibration of the piles will have an irreversible impact on the house, and the construction working surface does not meet the conditions. Therefore, a support method is urgently needed that can not only ensure the quality of pipeline support, but also will not disturb the surrounding residential buildings and meet economic benefits. Summary of the invention

[0004] To solve the above problems, the present invention discloses a light combined support structure for trench excavation, comprising a channel steel column and a support member limited to the side of the channel steel column. The channel steel column and the support member are arranged on both sides of the trench for support.

[0005] The channel steel column is provided with a plurality of through holes, and the through holes are provided with limiting pieces, and the lowermost limiting piece is rotatably provided with a support ring, and the side wall of the support ring is provided with a socket, and the socket is provided with a support rod, and the upper end of the support rod is buckled by one of the upper limiting pieces. The support rod is used to support the channel steel columns on both sides of the groove, and the lower end of the support rod is fixed in the socket, and the upper end of the support rod can be adjusted by pressing down to adjust the support distance, and then one of the limiting pieces located at the upper part selects a suitable through hole according to the position of the upper end of the support rod, buckles the upper end of the support rod, and fixes the support rod, that is, fixes the two channel steel columns. This fixing method is simple, and the components used are also simple and easy to make, which can improve the construction efficiency of the support.

[0006] Preferably, the support member includes a frame, and a retaining mesh and a force-bearing mesh are arranged inside the frame. The purpose of using the retaining mesh and the force-bearing mesh is to reduce the weight of the support member and facilitate transfer and installation. At the same time, the retaining mesh has a small mesh and is used to support the soil on both sides of the trench to prevent landslides, while the force-bearing mesh supports the retaining mesh and is used to withstand the pressure of the trench side walls.

[0007] Furthermore, the retaining net can be replaced with a thin plate, such as a steel plate, to prevent water seepage and prevent the scouring of running water and the overflow of soil from the mesh holes of the retaining net.

[0008] Preferably, the limiting member comprises a double-headed screw rod, the double-headed screw rod is horizontally inserted into the through hole, and nuts are threadedly provided at both ends of the double-headed screw rod.

[0009] Preferably, a clamp is inserted into the double-headed screw, and one side of the clamp is against the inner wall of the frame. That is, when the nut is tightened, the clamp is pressed, and the clamp embraces the frame to fix the support member in the length direction of the groove. At the same time, the side wall of the double-headed screw is supported by the support rod to close to the frame and press it against the inner wall of the groove. That is, this structure can fix the support member in two directions.

[0010] Preferably, the support ring is inserted and sleeved on the double-headed screw.

[0011] The beneficial effects of the present invention are as follows:

[0012] 1. The assembly and disassembly are carried out in a combined manner, and only support rods and limiters are used. The limiters not only restrict and fix the support rods, but also fix the supporting parts on one side. It has the advantages of convenient and fast installation, and will not affect the surroundings.

[0013] 2. The channel steel columns used are made by drilling holes on the channel steel, and retaining nets and load-bearing nets are used on the supporting parts, which greatly reduces the weight of the support and facilitates transportation and installation.

[0014] 3. The present invention has the advantages of simple structure and easy production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2 It is a three-dimensional schematic diagram of a channel steel column of the present invention;

[0017] Figure 3 It is a three-dimensional schematic diagram of the limiting member of the present invention;

[0018] Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0019] List of reference numerals:

[0020] 1. Channel steel column; 2. Support rod; 3. Support piece; 4. Nut; 5. Clamp; 6. Double-head screw; 7. Support ring; 8. Socket;

[0021] 11. Through hole; 31. Frame; 32. Retaining net; 33. Load-bearing net. DETAILED DESCRIPTION

[0022] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] like Figure 1 As shown, a light modular support structure for trench excavation includes a channel steel column 1, that is, the channel steel column 1 is made of channel steel, and a support member 3 limited to the side of the channel steel column 1, the support member 3 cooperates with the channel steel column 1 to support the inner wall of the trench. When supporting, the support member 3 and the channel steel column 1 are alternately arranged and abut against the inner wall of the trench.

[0024] Combination Figure 1 , Figure 2 and Figure 3 As shown, a plurality of through holes 11 are provided on the channel steel column 1, that is, a plurality of through holes 11 are provided on the side wall of the channel steel. This method is simple for the production of the channel steel column 1, and the channel steel is also easy to obtain, and a limiting member is provided in the through hole 11, and a support ring 7 is rotatably provided on the lowermost limiting member, and a plug hole 8 is provided on the side wall of the support ring 7, and a support rod 2 is provided in the plug hole 8, that is, the lower end of the support rod 2 is limited, which has the advantage of a simple structure, and the upper end of the support rod 2 is buckled by one of the upper limiting members, and when the lower end of the support rod 2 is fixed, the support rod 2 can be pressed down. The upper end of the support rod 2 is tightly pressed against the inner wall of the channel steel column 1, so that the two channel steel columns 1 are tightly pressed against the inner wall of the groove. Then, a limiting piece is inserted into the through hole 11 to limit the movement of the upper end of the support rod 2. That is, under the action of the support rod 2, the two oppositely arranged channel steel columns 1 are fixed. During the fixing process, if there is a gap between the limiting piece and the upper end of the support rod 2, a pad can be filled in the gap, or the support rod 2 used has a certain ability to deform after being axially compressed, that is, the support rod 2 is compressed into an arc shape to meet the support of the channel steel column 1.

[0025] Furthermore, at least two support rods 2 are used, and the two support rods 2 are distributed in an X shape. U-shaped screws, baffles and bolts can be used to fix the intersection of the two support rods 2. The baffles are inserted at both ends of the U screws to fit the poor parts, thereby improving the stability of the support.

[0026] like Figure 4As shown, the support member 3 includes a frame 31, which is a square structure, and a retaining net 32 ​​and a force-bearing net 33 are arranged inside the frame 31. The retaining net 32 ​​is used to hold the soil on the inner wall of the groove to prevent it from falling off, while the force-bearing net 33 holds the retaining net 32 ​​to prevent the retaining net 32 ​​from being damaged by force. The mesh of the retaining net 32 ​​is such that the soil cannot pass through and escape.

[0027] Furthermore, to prevent water seepage from occurring on the inner wall of the trench, a waterproof film may be covered on the retaining mesh 32, or the retaining mesh 32 may be replaced with a thin plate, such as a thin steel plate.

[0028] like Figure 3 As shown, the limit member includes a double-headed screw 6, which is horizontally inserted into the through hole 11, and nuts 4 are threadedly provided at both ends of the double-headed screw 6. A clamp 5 is inserted into the double-headed screw 6, and one side of the clamp 5 abuts against the inner wall of the frame 31, that is, after the double-headed screw 6 is inserted into the through hole 11, the clamp 5 is sleeved on the end of the double-headed screw 6, and then fixed with the nut 4, and the clamp 5 contacts the inner wall of the frame 31. As the nuts 4 at both ends of the double-headed screw 6 are tightened, the clamp 5 limits or embraces and fixes the frame 31, that is, the fixation of the supportable member 3 is achieved. During assembly, it should be noted that the outer wall of the frame 31 abuts against the side wall of the channel steel column 1.

[0029] The support ring 7 is inserted and sleeved on the double-headed screw rod 6, that is, the support ring 7 can rotate on the double-headed screw rod 6, and the support angle of the support rod 2 changes to meet the support needs.

[0030] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above technical features.

Claims

1. A lightweight combined support structure for trench excavation, characterized in that: It comprises a channel steel column (1), and a supporting member (3) restricted on the side of the channel steel column (1); The channel steel column (1) is provided with a plurality of through holes (11), and the through holes (11) are provided with limit members, a support ring (7) is rotatably provided on the lowermost limit member, a plug hole (8) is provided on the side wall of the support ring (7), a support rod (2) is provided in the plug hole (8), and the upper end of the support rod (2) is buckled by one of the upper limit members.

2. A light combined support structure for trench excavation according to claim 1, characterized in that: The support member (3) comprises a frame (31), and a soil retaining net (32) and a force-bearing net (33) are arranged inside the frame (31).

3. A light combined support structure for trench excavation according to claim 2, characterized in that: The limiting member comprises a double-headed screw (6), the double-headed screw (6) being horizontally inserted into the through hole (11), and nuts (4) being threadedly provided at both ends of the double-headed screw (6).

4. A light combined support structure for trench excavation according to claim 3, characterized in that: A clamping piece (5) is inserted into the double-headed screw (6), and one side of the clamping piece (5) abuts against the inner wall of the frame (31).

5. A light combined support structure for trench excavation according to claim 3, characterized in that: The support ring (7) is inserted and sleeved on the double-headed screw (6).

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