Structural framework and device for temporary supporting of groove

Abstract

The utility model belongs to the technical field of groove construction, and particularly discloses a structural framework and device for temporary supporting of a groove. A plurality of U-shaped distribution bars are arranged on a reinforcement cage framework of the structural framework in the length direction, a plurality of horizontal distribution bars are arranged between the top end and the bottom end of the front side face and the rear side face of the reinforcement cage framework respectively, a plurality of tie bars are fixedly arranged in the U-shaped distribution bars, and shear bars are fixedly arranged on the front side and the rear side of the reinforcement cage framework respectively. The flexible skin fixedly wraps the front side face and / or the rear side face of the reinforcement cage framework. The device comprises the structural framework, and supporting rods are connected to the two corners of the upper end of the reinforcement cage framework and the intersection of the shear ribs. By means of the rigidity of the reinforcement cage framework and the integrity of the flexible skin, soil bodies on the two sides of the groove can be effectively supported, pressure of part of the groove wall can be resisted, and therefore the groove wall can be prevented from collapsing in a short time, and the supporting structure has the advantages of being simple in structure, convenient to construct, good in supporting effect and capable of being repeatedly used.

Description

Technical Field

[0001] The utility model belongs to the technical field of trench construction, and specifically relates to a structural frame and a device for temporary trench support which has the advantages of simple structure, convenient construction, good supporting effect and reusability. Background Art

[0002] A trench is a strip-shaped depression dug on the ground for burying pipelines, cables and other facilities. An underground trench temporary support structure refers to a temporary support structure temporarily set up during the construction of an underground trench to support the rock and soil on the side walls of the trench, prevent landslides and collapses, and ensure stable support, reinforcement and protection of the construction area in order to ensure the safety and stability of the trench construction.

[0003] At present, trench support usually includes steel plate support, wooden support, Larsen steel sheet pile, concrete retaining wall (piles), temporary beams, etc. Steel plate support and wooden support are made by attaching them to the trench wall and then using a supporting structure inside the trench to support them. Although the structure is simple and the material source is wide, it is difficult to make full use of the support due to the cumbersome support construction process and the easy damage of steel plates and wooden boards, resulting in high construction and material costs. Larsen steel sheet pile is a more common trench support structure. It is driven into the ground by a pile driver to form a continuous wall, which can effectively prevent the collapse of the trench wall. However, since it requires the cooperation of a pile driver to complete the installation and extraction, its application is relatively limited. Moreover, when the soil on the trench side contains large stones, it is easy to cause local damage to the Larsen steel sheet pile. Concrete retaining wall (piles) and temporary beams need to be cast on site, which not only has a slow construction speed, but also is difficult to reuse. Therefore, they are rarely used as temporary supports. Although they can also be cast off-site and driven into the ground on site, it will cause the limitation of requiring the cooperation of a pile driver to complete the construction.

[0004] In the prior art, there is also a method of setting a rigid support plate to fit the two side walls of the trench, and then setting a support adjustment structure in the trench, so as to achieve rapid temporary support of the trench and realize the reuse of the support structure. However, since the rigid support plate and the support adjustment structure need to be customized and processed in advance before they can be transported to the site for use, it is impossible to directly use the on-site materials to make and use them as needed. Therefore, not only is the application flexibility as a temporary support structure insufficient, but the specifications of the rigid support plate are often relatively single, and it is difficult to adapt to the support needs of trenches of different sizes, resulting in limited support effect, and the support plate with inappropriate specifications is easy to affect the normal construction of the trench due to its protrusion. In addition, for deep and narrow trenches such as gravel interception trenches, since the side walls need to be kept intact for a certain period of time after the trench is excavated in order to fill the gravel, it is necessary to have a certain support for the side walls of the trench, but the aforementioned concrete support wall (pile) and temporary beam, rigid support plate and support adjustment structure cannot be used due to the narrow space and it is difficult to complete the formwork casting and support adjustment work. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model has developed a structural frame for temporary trench support which has a simple structure, is convenient to construct, has a good supporting effect and is reusable, and also has developed a device for temporary trench support.

[0006] The structural framework of the utility model for temporary trench support is realized as follows: it includes a steel cage framework, a flexible skin,

[0007] The steel cage skeleton comprises U-shaped distribution bars, horizontal distribution bars and tie bars. The steel cage skeleton is vertically provided with a plurality of U-shaped distribution bars at intervals along the length direction. The front and rear sides formed by the plurality of U-shaped distribution bars of the steel cage skeleton are respectively provided with a plurality of horizontal distribution bars at intervals between the top and the bottom. The interior of the U-shaped distribution bars is provided with a plurality of tie bars at intervals along the height direction. The two ends of the tie bars are respectively fixedly connected to the two sides of the U-shaped distribution bars. Two scissor bars are respectively fixedly provided on the front and rear sides of the exterior of the U-shaped distribution bars of the steel cage skeleton.

[0008] The flexible skin at least fixedly wraps the front side surface and / or the rear side surface of the steel cage framework along the length direction.

[0009] Furthermore, the scissor bars are in an "X" shape and the ends thereof extend to the four corners of the steel cage frame, and the scissor bars are respectively fixedly connected to the intersecting U-shaped distribution bars and / or horizontal distribution bars.

[0010] Furthermore, tie bars connecting two sides of the U-shaped distribution bars are fixedly provided at both ends of the top of the steel cage skeleton along the length direction, and lifting ears are fixedly provided at both ends of the top surface of the steel cage skeleton along the length direction.

[0011] Furthermore, the lifting lug is an annular lifting lug whose bottom end is fixedly connected to the tie bars on the lengthwise end surface of the top surface of the steel cage frame, or a rope-shaped lifting lug whose two ends are respectively fixedly connected to the scissor bars on both sides of the lengthwise end surface of the top surface of the steel cage frame.

[0012] Furthermore, the horizontal distribution reinforcement is arranged inside the U-shaped distribution reinforcement, and the two ends of the tie reinforcement are respectively fixedly connected to the two sides of the U-shaped distribution reinforcement and the corresponding horizontal distribution reinforcement.

[0013] Furthermore, the flexible skin is geotextile, carbon fiber cloth, canvas or color strip cloth, and the flexible skin is fixed by tying wire and steel cage frame.

[0014] Furthermore, the U-shaped distribution bars, horizontal distribution bars, tie bars and / or scissors bars are threaded steel bars with a diameter of 12, 16, 18, 20, 22 or 25 mm, and the U-shaped distribution bars, horizontal distribution bars, tie bars and / or scissors bars have the same steel bar diameter, or the diameter of the scissors bars is larger than that of other steel bars.

[0015] The device for temporary trench support of the utility model is realized as follows: it includes the aforementioned structural frame for temporary trench support, at least the two corners of the upper end of the inner side surface of the steel cage frame on both sides of the trench and the intersection of the scissors bars are detachably connected with a support rod, and the two ends of the support rod are respectively connected to the steel cage frame on both sides of the trench.

[0016] Furthermore, the support rod includes a screw, an adjusting tube, and a locking nut. The two sides of the adjusting tube are respectively provided with internal thread sections with opposite rotation directions. The two ends of the adjusting tube are respectively provided with screws. One end of the screw is threadedly connected to the internal thread section of the adjusting tube and the other end is connected to the inner side surface of the steel cage skeleton. The locking nut is threadedly connected to a sleeve on the side of the screw close to the adjusting tube.

[0017] Furthermore, a rectangular or hexagonal regulating block is coaxially arranged in the middle of the regulating tube, or at least two through holes are circumferentially spaced and penetrated in the middle.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The utility model adopts steel bars that are easily available on the construction site, and processes U-shaped distribution bars, horizontal distribution bars, tie bars and scissors bars to form a rigid steel cage skeleton, and then covers the surface of the steel cage skeleton with a flexible skin to form a deep and narrow temporary support structure skeleton, thereby using the strength of the steel cage skeleton to resist the rock and soil pressure of the trench side wall, and using the flexible skin to resist the loose soil on the trench side wall, which can not only prevent the trench side wall from collapsing in a short time, but also the material is easy to obtain, low in cost, and can be processed on site, thereby improving the application flexibility of the trench temporary support, and is particularly suitable for temporary support of deep and narrow trenches such as gravel interception trenches.

[0020] 2. The structural skeleton of the utility model can be processed on site near the groove, and then lowered into the groove by hoisting. It can also be taken out of the groove by hoisting for supporting the next section of the groove. It is not only convenient to construct and reusable, but also the structural skeleton can be adaptively processed according to the size of the groove on site. Therefore, the support effect is better and it will not affect the normal construction of the groove.

[0021] In summary, the utility model has the characteristics of simple structure, convenient construction, good supporting effect and reusability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a schematic diagram of the three-dimensional structure of the steel cage skeleton of the utility model;

[0023] Figure 2 It is the structural framework plane and elevation of the utility model;

[0024] Figure 3 It is the side elevation of the steel cage frame of the utility model;

[0025] Figure 4 It is a schematic diagram of the device structure of the utility model;

[0026] In the figure: 1-reinforcement cage skeleton, 11-U-shaped distribution reinforcement, 12-horizontal distribution reinforcement, 13-tie reinforcement, 14-scissor reinforcement, 15-lifting ear, 2-flexible skin, 3-support rod, 31-screw rod, 32-adjusting tube, 33-tightening nut. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited in any way. Any changes or improvements made based on the teachings of the present invention belong to the protection scope of the present invention.

[0028] like Figure 1 , 2 As shown in Figure 3, the structural framework for temporary trench support of the utility model includes a steel cage framework 1 and a flexible skin 2.

[0029] The steel cage skeleton 1 comprises U-shaped distribution bars 11, horizontal distribution bars 12, and tie bars 13. The steel cage skeleton 1 is vertically provided with a plurality of U-shaped distribution bars 11 at intervals along the length direction. The front and rear sides formed by the plurality of U-shaped distribution bars 11 of the steel cage skeleton 1 are respectively fixedly provided with a plurality of horizontal distribution bars 12 at intervals between the top and the bottom. The interior of the U-shaped distribution bars 11 is provided with a plurality of tie bars 13 at intervals along the height direction. The two ends of the tie bars 13 are respectively fixedly connected to the two sides of the U-shaped distribution bars 11. Two scissor bars 14 are respectively fixedly provided on the front and rear sides of the exterior of the U-shaped distribution bars 11 of the steel cage skeleton 1.

[0030] The flexible skin 2 at least securely wraps around the front side and / or the rear side of the steel cage framework 1 along the length direction.

[0031] The scissor bars 14 are in an "X" shape and their ends extend to the four corners of the steel cage frame 1. The scissor bars 14 are respectively fixedly connected to the intersecting U-shaped distribution bars 11 and / or horizontal distribution bars 12.

[0032] Tie bars 13 connecting two sides of the U-shaped distribution bars 11 are fixedly provided at both ends of the top of the steel cage frame 1 along the length direction, and lifting ears 15 are fixedly provided at both ends of the top surface of the steel cage frame 1 along the length direction.

[0033] The lifting lug 15 is an annular lifting lug whose bottom end is fixedly connected to the tie bar 13 on the lengthwise end surface of the top surface of the steel cage frame 1, or a rope-shaped lifting lug whose two ends are respectively fixedly connected to the scissor bars 14 on both sides of the lengthwise end surface of the top surface of the steel cage frame 1.

[0034] The horizontal distribution ribs 12 are arranged inside the U-shaped distribution ribs 11 , and the two ends of the tie bars 13 are fixedly connected to the two sides of the U-shaped distribution ribs 11 and the corresponding horizontal distribution ribs 12 , respectively.

[0035] The flexible skin 2 is geotextile, carbon fiber cloth, canvas or color strip cloth, and the flexible skin 2 is tied and fixed to the steel cage frame 1 by using binding wire.

[0036] The U-shaped distribution bars 11, horizontal distribution bars 12, tie bars 13 and / or scissors bars 14 are threaded steel bars with a diameter of 12, 16, 18, 20, 22 or 25 mm. The U-shaped distribution bars 11, horizontal distribution bars 12, tie bars 13 and / or scissors bars 14 have the same steel bar diameter, or the diameter of the scissors bars 14 is larger than that of other steel bars.

[0037] like Figure 4 As shown, the device for temporary trench support of the utility model comprises the aforementioned structural frame for temporary trench support, wherein at least the two corners of the upper end of the inner side surface of the steel cage frame 1 on both sides of the trench and the intersection of the scissors bars 14 are detachably connected with a support rod 3, and the two ends of the support rod 3 are respectively connected to the steel cage frame 1 on both sides of the trench.

[0038] The support rod 3 includes a screw rod 31, an adjusting tube 32, and a locking nut 33. The two sides of the adjusting tube 32 are respectively provided with internal thread sections with opposite rotation directions. The two ends of the adjusting tube 32 are respectively provided with screw rods 31. One end of the screw rod 31 is threadedly connected to the internal thread section of the adjusting tube 32 and the other end is connected to the inner side surface of the steel cage skeleton 1. The locking nut 33 is threadedly connected and sleeved on the side of the screw rod 31 close to the adjusting tube 32.

[0039] A rectangular or hexagonal regulating block is coaxially arranged in the middle of the regulating tube 32, or at least two through holes are circumferentially spaced and penetrated in the middle.

[0040] The working principle and working process of this utility model:

[0041] like Figures 1 to 4As shown, during the production, according to the depth of the supporting trench and the geotechnical pressure of the trench wall, suitable threaded steel bars are selected to be bent into corresponding U-shaped distribution bars 11, and then according to the length of the structural skeleton, a plurality of U-shaped distribution bars 11 are vertically placed at intervals within the length of the skeleton, and then a plurality of horizontal distribution bars 12 are fixedly welded at intervals on the front and rear sides of the plurality of U-shaped distribution bars 11, and then a plurality of tie bars 13 are welded inside the plurality of U-shaped distribution bars 11, and the front and rear sides of the plurality of U-shaped distribution bars 11 are fixedly connected to form a basic steel cage skeleton 1, and then "X"-shaped scissor bars 14 are welded on the front and rear sides of the outside of the basic steel cage skeleton 1, and the ends of the scissor bars 14 are extended to the four corners of the steel cage skeleton 1, and finally the steel cage skeleton 1 is formed, and the ears 15 connected to the scissor bars 14 are welded on both sides of the upper end of the steel cage skeleton 1, and finally the geotextile is fixed to the surface of the steel cage skeleton 1 with wire tying, so as to form the structural skeleton for temporary trench support.

[0042] When in use, after the trench is formed, the aforementioned structural skeleton is immediately hoisted and lowered, and the strength of the steel cage skeleton 1 is used to resist the rock and soil pressure on the side wall of the trench, and the geotextile is used to resist the loose soil on the side wall of the trench. When the trench is wide, the two structural skeletons can be hoisted to both sides of the trench, and then the support rods 3 are used to respectively abut the upper two corners on the inner side of the steel cage skeleton 1 and the intersection of the scissor bars 14. By adjusting the support rods 3, the structural skeletons on both sides are pressed against the side wall of the trench to complete the temporary support of the trench. It should be noted that when the structural skeleton of the utility model is placed in a trench that has been excavated to a depth exceeding a certain depth, there is a risk of a large deformation of the steel cage skeleton 1, so construction personnel cannot enter the trench, and the structural skeleton of the utility model is mostly used for temporary support of narrow trenches.

[0043] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A structural framework for temporary trench support, characterized in that: It comprises a steel cage frame (1) and a flexible skin (2). The steel cage frame (1) comprises U-shaped distribution bars (11), horizontal distribution bars (12), and tie bars (13); the steel cage frame (1) is vertically provided with a plurality of U-shaped distribution bars (11) at intervals along the length direction; a plurality of horizontal distribution bars (12) are fixedly provided at intervals between the top and the bottom ends of the front and rear side surfaces formed by the plurality of U-shaped distribution bars (11) of the steel cage frame (1); a plurality of tie bars (13) are arranged at intervals inside the U-shaped distribution bars (11) along the height direction; the two ends of the tie bars (13) are respectively fixedly connected to the two sides of the U-shaped distribution bars (11); and scissor bars (14) are also fixedly provided on the front and rear sides of the steel cage frame (1); The flexible skin (2) at least fixedly wraps around the front side surface and / or the rear side surface of the steel cage framework (1) along the length direction.

2. The structural framework for temporary trench support according to claim 1, characterized in that: The scissor bars (14) are in an "X" shape and their ends extend to the four corners of the steel cage frame (1); the scissor bars (14) are respectively fixedly connected to the intersecting U-shaped distribution bars (11) and / or the horizontal distribution bars (12).

3. The structural framework for temporary trench support according to claim 2, characterized in that: Tie bars (13) connecting two sides of the U-shaped distribution bars (11) are fixedly provided at both ends of the top of the steel cage frame (1) in the length direction, and lifting ears (15) are fixedly provided at both ends of the top surface of the steel cage frame (1) in the length direction.

4. The structural framework for temporary trench support according to claim 3, characterized in that: The lifting lug (15) is a ring-shaped lifting lug whose bottom end is fixedly connected to the tie bar (13) on the end surface of the top surface of the steel cage frame (1) in the length direction, or a rope-shaped lifting lug whose two ends are respectively fixedly connected to the scissor bars (14) on both sides of the end surface of the top surface of the steel cage frame (1) in the length direction.

5. The structural framework for temporary trench support according to claim 1, characterized in that: The horizontal distribution ribs (12) are arranged inside the U-shaped distribution ribs (11), and the two ends of the tie bars (13) are respectively fixedly connected to the two sides of the U-shaped distribution ribs (11) and the corresponding horizontal distribution ribs (12).

6. The structural framework for temporary trench support according to claim 1, characterized in that: The flexible skin (2) is geotextile, carbon fiber cloth, canvas or color strip cloth, and the flexible skin (2) is tied and fixed to the steel cage frame (1) by means of binding wire.

7. The structural framework for temporary trench support according to any one of claims 1 to 6, characterized in that: The U-shaped distribution bars (11), horizontal distribution bars (12), tie bars (13) and / or scissor bars (14) are threaded steel bars with a diameter of 12, 16, 18, 20, 22 or 25 mm. The U-shaped distribution bars (11), horizontal distribution bars (12), tie bars (13) and / or scissor bars (14) have the same steel bar diameter, or the diameter of the scissor bars (14) is larger than that of other steel bars.

8. A device for temporary trench support, characterized in that: It comprises a structural frame for temporary trench support as claimed in any one of claims 1 to 7, wherein at least the two upper corners of the inner side surface of the steel cage frame (1) on both sides of the trench and the intersection of the scissor bars (14) are detachably connected with a support rod (3), and the two ends of the support rod (3) are respectively connected to the steel cage frame (1) on both sides of the trench.

9. The device for temporary trench support according to claim 8, characterized in that: The support rod (3) comprises a screw rod (31), an adjusting tube (32), and a fixing nut (33); both sides of the adjusting tube (32) are respectively provided with internal thread sections with opposite rotation directions; both ends of the adjusting tube (32) are respectively provided with screw rods (31); one end of the screw rod (31) is threadedly connected to the internal thread section of the adjusting tube (32) and the other end is connected to the inner side surface of the steel cage skeleton (1); the fixing nut (33) is threadedly connected and sleeved on a side of the screw rod (31) close to the adjusting tube (32).

10. The device for temporary trench support according to claim 9, characterized in that: A rectangular or hexagonal regulating block is coaxially arranged in the middle of the regulating tube (32), or at least two through holes are circumferentially spaced and penetrated in the middle.

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