Deep groove excavation supporting device and construction method

Abstract

The invention discloses a deep groove excavation supporting device and a construction method. The deep groove excavation supporting device comprises a left supporting assembly, a right supporting assembly and a plurality of supporting cross rods arranged between the left supporting assembly and the right supporting assembly. The two ends of the supporting transverse rod are hinged to the set positions of the left supporting assembly and the right supporting assembly correspondingly, and the supporting transverse rod, the left supporting assembly and the right supporting assembly form an excavation space, so that the left supporting assembly and the right supporting assembly can sink gradually along with trench excavation. According to the deep groove excavation supporting device and the construction method, the supporting device can gradually sink along with groove excavation, and therefore the construction efficiency and the supporting stability can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly relates to a deep trench excavation support device and a construction method. Background Art

[0002] In trench support construction, according to the trench shape, depth, and soil type, current trench support mainly includes support methods such as sheet pile support, shotcreting with wire mesh, soil nailing wall, and cast-in-place concrete pile. Among them, the traditional sheet pile support mainly consists of retaining plates and struts. The retaining plates are placed on the inner sidewalls of the trench, and then the struts are used to press the retaining plates tightly against the trench sidewalls. According to the hardness of the soil, the sheet pile support is divided into two methods: continuous horizontal support and intermittent horizontal support. The support structure of the traditional sheet pile support generally inserts the retaining plates into the ground first, and then conducts excavation. After the excavation is completed, the support rods are installed to connect the retaining plates on both sides. This method is rather cumbersome and affects the construction efficiency.

[0003] Therefore, it is necessary to improve the structure of the deep trench support device in the prior art. During trench construction, after the support device is assembled, it can gradually sink as the trench is excavated. When the trench excavation is completed, the support device is both installed and supported in the trench, which can improve the construction efficiency. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a deep trench excavation support device and a construction method. During trench construction, after the support device is assembled, it can gradually sink as the trench is excavated. When the trench excavation is completed, the support device is immediately installed and supported in the trench, which can improve the construction efficiency.

[0005] The deep trench excavation support device of the present invention includes a left support assembly, a right support assembly, and a plurality of support crossbars disposed between the left support assembly and the right support assembly. Both ends of the support crossbars are respectively hinged to set positions of the left support assembly and the right support assembly and form an excavation space with the left support assembly and the right support assembly, such that the left support assembly and the right support assembly can gradually sink as the trench is excavated.

[0006] Further, the left support assembly includes a left support plate and an insertion plate I, and the insertion plate I is disposed at the lower end of the left support plate. The right support assembly includes a right support plate and an insertion plate II, and the insertion plate II is disposed at the lower end of the right support plate.

[0007] Further, the left support plate further includes a plurality of strengthening vertical ribs I, and the strengthening vertical ribs I are disposed inside the left support plate. One end of the support crossbar is hinged to a set position of the strengthening vertical ribs I. The right support plate further includes a plurality of strengthening vertical ribs II, and the other end of the support crossbar is hinged to a set position of the strengthening vertical ribs II.

[0008] Furthermore, the support device further includes a chute, a hose, and a hopper. The chute is detachably and fixedly arranged inside the right support plate. The hose is detachably and fixedly connected to the lower part of the chute. The hopper is detachably communicated with the top of the chute.

[0009] Furthermore, the right support assembly further includes a ladder, which is arranged inside the right support plate.

[0010] Furthermore, the support device further includes a guardrail and a fall arrester. The guardrails are respectively detachably and fixedly arranged on the tops of the left support assembly and the right support assembly. The fall arrester is arranged on the guardrail of the right support assembly and is located above the ladder.

[0011] Furthermore, a number of connecting holes are respectively provided on the first reinforcing vertical rib and the second reinforcing vertical rib;

[0012] A number of hinge seats are also respectively arranged on the first reinforcing vertical rib and the second reinforcing vertical rib. The two ends of the support cross bar are respectively hinged to the hinge seats through hinge shafts. The hinge seats are the set positions of the first reinforcing vertical rib and the second reinforcing vertical rib.

[0013] Furthermore, the support device further includes lifting rings and steel wires. The lifting rings are respectively arranged on the tops of the left support plate and the right support plate. The steel wires are respectively connected to the lifting rings arranged on the left support plate and the lifting rings arranged on the right support plate.

[0014] Furthermore, the left support plate and the right support plate respectively include an outer plate and an inner plate. A number of transverse and longitudinal reinforcing ribs are arranged between the outer plate and the inner plate.

[0015] The present invention also discloses a construction method, which uses the deep trench excavation support device described above, and includes the following steps:

[0016] S1: Measuring and setting out the lines to determine the position of the trench to be excavated. Assembling the left support plate, the right support plate, and the support cross bar. After using an excavator to excavate to the set position at the position to be excavated, using a lifting device to place the assembled left support plate, right support plate, and support cross bar at this set position and insert the lower parts of the left support plate and the right support plate into the soil;

[0017] S2: Continuing the excavation. When a set of left support plate, right support plate, and support cross bar are all located inside the trench, the lifting device can be used to install another set of left support plate, right support plate, and support cross bar above the first set of left support plate and right support plate, and complete the installation of several sets of left support plate, right support plate, and support cross bar according to the expected excavation depth of the trench;

[0018] S3: Stopping the excavation and installing the guardrail, the fall arrester, the chute, the hopper, and the hose;

[0019] S4: Carry out the construction of the cushion layer at the bottom of the trench, pipeline installation and gravel foundation.

[0020] S5: Remove the protective railing, anti-falling device, string tube, hopper and hose, and use the traction equipment to hoist and remove the left support plate, right support plate and support cross bar to complete the backfilling of the trench.

[0021] Advantages of the present invention: For the deep trench excavation support device and construction method of the present invention, after the device is assembled before the deep trench excavation, the device is placed at the position to be excavated and can sink gradually with the excavation. When the excavation is completed, the support device is located at the bottom of the trench to support the trench. Therefore, compared with the support devices in the prior art, the overall support structure is more stable, and the construction efficiency can be improved at the same time. Description of the Drawings

[0022] The present invention will be further described below in conjunction with the drawings and embodiments:

[0023] Figure 1 It is a schematic structural diagram of the support device of the present invention;

[0024] Figure 2 It is a schematic structural diagram of the cooperation between the left support plate and the protective railing;

[0025] Figure 3 It is a schematic structural diagram of the cooperation between the right support plate and the protective railing;

[0026] Figure 4 It is Figure 1 The top view of;

[0027] Figure 5 It is a schematic structural diagram of the right support plate;

[0028] Figure 6 It is a schematic structural diagram when the left support plate, right support plate and support cross bar are assembled;

[0029] Figure 7 It is a schematic structural diagram after another set of left support components and right support components are hoisted in place after a set of left support components and right support components are located in the trench;

[0030] Figure 8 It is Figure 7 The schematic structural diagram when both sets of devices in are located in the trench;

[0031] Figure 9 It is Figure 8 The schematic structural diagram after the installation of the protective railing is completed;

[0032] Figure 10 It is Figure 9 The schematic structural diagram when the pipeline construction at the bottom of the trench in is completed;

[0033] Reference Signs:

[0034] 1. Right support plate; 2. Left support plate; 3. Support cross bar; 4. Connecting hole; 5. Reinforcing vertical rib I; 6. Hinge seat; 7. Insertion plate I; 8. Reinforcing vertical rib II; 9. Insertion plate II; 10. Guardrail; 11. Hoisting ring; 12. Hopper; 13. Chute; 14. Hose; 15. Fall arrester; 16. Ladder; 17. Steel wire rope; 18. Reinforcing rib; 19. Inner plate; 20. Outer plate. Detailed Embodiment

[0035] As Figure 1-10 shown: The deep trench excavation support device of this embodiment includes a left support assembly, a right support assembly, and a plurality of support cross bars 3 arranged between the left support assembly and the right support assembly. The two ends of the support cross bar 3 are respectively hinged to set positions of the left support assembly and the right support assembly and form an excavation space with the left support assembly and the right support assembly, so that the left support assembly and the right support assembly can gradually sink as the trench is excavated. The set positions can be selected according to the usage needs. Before excavation, the left support assembly and the right support assembly are assembled. The support cross bar 3 and the left support assembly and the right support assembly form a rectangular space, that is, the excavation space. Thus, during the excavation process by the excavator, since the support cross bar 3 is movably connected to the left support assembly and the right support assembly respectively, the left support assembly and the right support assembly can gradually sink as the excavation progresses; thus, compared with the prior art where the support cross bar 3 is fixedly connected to the left support assembly and the right support assembly, the left support assembly and the right support assembly can achieve adaptive gradual sinking as the excavation progresses, which can improve the construction efficiency compared with the prior art and is also beneficial to enhancing the stability of the support during the construction process;

[0036] In this embodiment, the left support assembly includes a left support plate 2 and an insertion plate I 7. The insertion plate I 7 is arranged at the lower end of the left support plate 2. The right support assembly includes a right support plate 1 and an insertion plate II 9. The insertion plate II 9 is arranged at the lower end of the right support plate 1. The left support plate 2 and the right support plate 1 are only used to distinguish the two support plates. The cross-section of the insertion plate I 7 is a triangular structure. The insertion plate I 7 is arranged at the lower end of the left support plate 2. In this structure, the left and right are in the left-right direction relative to Figure 1 and the up and down are in the up-down direction relative to Figure 1 ; the cross-section of the insertion plate II 9 is a triangular structure. The insertion plate II 9 is arranged at the lower end of the right support plate 1. The insertion plate I 7 and the insertion plate II 9 are generally welded to the lower end of the left support plate 2 and the lower end of the right support plate 1 respectively, so as to facilitate the insertion of the support device into the soil.

[0037] In this embodiment, the left support plate 2 further includes a plurality of first reinforcing vertical ribs 5, the first reinforcing vertical ribs 5 are arranged on the inner side of the left support plate 2, one end of the support cross bar 3 is hinged to a set position of the first reinforcing vertical ribs 5, the right support plate 1 further includes a plurality of second reinforcing vertical ribs 8, and the other end of the support cross bar 3 is hinged to a set position of the second reinforcing vertical ribs 8. The first reinforcing vertical ribs 5 and the second reinforcing vertical ribs 8 are preferably two respectively. As Figure 2 shown, the first reinforcing vertical ribs 5 are arranged on the inner side of the left support plate 2 (the side away from the inner wall of the trench, the outer side of the left support plate 2 is closely attached to the inner wall of the trench). The two first reinforcing vertical ribs 5 can be fixed by welding, and are respectively arranged on the left side and the right side of the inner surface of the left support plate 2 relative to Figure 2 ; as Figure 3 shown, the second reinforcing vertical ribs 8 are arranged on the inner side of the right support plate 1 (the side away from the inner wall of the trench, the outer side of the right support plate 1 is closely attached to the inner wall of the trench). The two second reinforcing vertical ribs 8 are arranged on the inner surface of the right support plate 1. They can be fixed by welding, and are respectively located on the left side and the right side in the left-right direction relative to Figure 3 . Thus, while the right support plate 1 can be strengthened, it is convenient to connect with the support cross bar 3.

[0038] In this embodiment, the support device further includes a string tube 13, a hose 14 and a hopper 12. The string tube 13 is detachably and fixedly arranged on the inner side of the right support plate 1. The hose 14 is detachably and fixedly connected to the lower part of the string tube 13. The hopper 12 is detachably communicated with the top of the string tube 13. The string tube 13 is fixed to the inner side of the right support plate 1 by a hoop, generally arranged along the up-down direction of the right support plate 1 and located at the middle position of the right support plate 1. The hose 14 is fixed to the lower part of the string tube 13 by a hoop. Of course, the hoop is generally tightened by bolts and nuts. The up-down direction is the up-down direction relative to Figure 3 . The hopper 12 is arranged at the top of the string tube 13. Thus, during use, it is convenient to pour concrete into the bottom of the trench through the hopper 12, the string tube 13 and the hose 14, which is convenient for construction. The numbers of the string tube 13, the hose 14 and the hopper 12 can be set according to the usage requirements.

[0039] In this embodiment, the right support assembly further includes a ladder 16, and the ladder 16 is arranged on the inner side of the right support plate 1. The ladder 16 is fixed to the inner side of the right support plate 1 by bolts or welding. The inner side is the side close to the left support plate 2, so that it is convenient for construction workers to enter and exit the trench through the ladder 16 for construction at the bottom of the trench.

[0040] In this embodiment, the support device further includes a guardrail 10 and a fall arrester 15. The guardrail 10 is detachably and fixedly arranged on the tops of the left support assembly and the right support assembly respectively. The fall arrester 15 is arranged on the guardrail 10 of the right support assembly and is located above the ladder 16. The structure of the fall arrester 15 is set according to the usage requirements. The guardrail 10 is of an L-shaped structure and is fixed to the tops of the left support plate 2 and the right support plate 1 respectively by bolts. When multiple groups of left support assemblies and right support assemblies are respectively arranged corresponding to each other in the vertical direction, the guardrail 10 is arranged on the tops of the left support plate 2 and the right support plate 1 at the top. The fall arrester 15 is arranged corresponding to the position of the ladder 16, so that during use, the operation safety of construction workers can be guaranteed. Generally, one end of the fall arrester 15 is hung on the guardrail 10. The specific structure of the fall arrester 15 is the application of the prior art and will not be elaborated here.

[0041] In this embodiment, a plurality of connection holes 4 are respectively arranged on the reinforcing vertical rib I 5 and the reinforcing vertical rib II 8; by arranging the connection holes 4, multiple groups of left support assemblies and right support assemblies can be set according to the actual usage situation. Adjacent left support assemblies and adjacent right support assemblies are connected by bolts. Among them, each group of left support assemblies can be arranged in multiple groups along the length direction and the up-and-down direction of the groove. The right support assembly is arranged corresponding to the left support assembly. When multiple groups of left support assemblies and right support assemblies are set, the quantities and positions of the string cylinders 13, the hoses 14, the hoppers 12 and the fall arresters 15 can be set according to the usage requirements.

[0042] A plurality of hinge seats 6 are also respectively arranged on the reinforcing vertical rib I 5 and the reinforcing vertical rib II 8. The two ends of the support cross bar 3 are respectively hinged to the hinge seats 6 through hinge shafts. The hinge seats 6 are the set positions of the reinforcing vertical rib I 5 and the reinforcing vertical rib II 8. Hinge grooves are formed on the hinge seats 6. The support cross bar 3 can be of a three-section structure, including a rod body and hinge parts at both ends of the rod body. Hinge holes are arranged on the hinge grooves. The hinge parts are inserted into the hinge grooves and are hinged through hinge shafts and fastened by nuts. Generally, the hinge shafts are bolt shafts.

[0043] In this embodiment, the support device further includes lifting rings 11 and steel wire ropes 17. The lifting rings 11 are respectively arranged on the tops of the left support plate 2 and the right support plate 1. The steel wire ropes 17 are respectively connected to the lifting rings 11 arranged on the left support plate 2 and the lifting rings 11 arranged on the right support plate 1. The steel wire ropes 17 connect the two lifting rings 11, so that it is convenient to set up the support device by hoisting through the steel wire ropes 17, and it is convenient for the turnover use of the support device.

[0044] In this embodiment, the left support plate 2 and the right support plate 1 respectively include an outer plate 20 and an inner plate 19. A plurality of reinforcing ribs 18 arranged horizontally and vertically are arranged between the outer plate 20 and the inner plate 19. AsFigure 5 As shown, by arranging the reinforcing ribs 18 between the outer plate 20 and the inner plate 19, the reinforcing ribs 18 can be fixed between the outer plate 20 and the inner plate 19 by welding, thereby improving the structural strength of the left support plate 2 and the right support plate 1.

[0045] The construction method of the present invention uses the deep trench excavation support device described above and includes the following steps:

[0046] S1: Measuring and setting out lines to determine the position of the trench to be excavated, assembling the left support plate 2, the right support plate 1 and the support cross bar 3. After using an excavator to excavate to the set position at the position to be excavated, use a lifting device to place the assembled left support plate 2, right support plate 1 and support cross bar 3 at this set position and insert the lower parts of the left support plate 2 and the right support plate 1 into the soil; First excavate to the set position at the position to be excavated, and this position can be set according to the length of the support device. First excavate to form a shallow trench, and then hoist the assembled left support plate 2, right support plate 1 and support cross bar 3 to this position and insert the lower parts of the left support plate 2 and the right support plate 1 into the soil in the shallow trench;

[0047] S2: Continuing excavation, when a set of left support plate 2, right support plate 1 and support cross bar 3 are all located in the trench, a lifting device can be used to install another set of left support plate 2, right support plate 1 and support cross bar 3 above the first set of left support plate 2 and right support plate 1, and complete the installation of several sets of left support plate 2, right support plate 1 and support cross bar 3 according to the expected excavation depth of the trench; According to the depth of the trench to be excavated, determine the required quantity of the left support plate 2, right support plate 1 and support cross bar 3. When a set of left support plate 2, right support plate 1 and support cross bar 3 are all sunk into the trench, install another set of left support plate 2, right support plate 1 and support cross bar 3 and continue excavation until the excavation work of the expected depth of the trench is completed, as Figures 7 to 8 shown;

[0048] S3: Stopping excavation and installing the guardrail 10, the anti-falling device 15, the string tube 13, the hopper 12 and the hose 14; After the excavation is completed, install the guardrail 10 on the top of the overall device;

[0049] S4: Carrying out the construction of the bottom cushion layer, pipe installation and sand and gravel foundation of the trench; Carrying out the construction of the bottom of the trench and the installation of the pipeline;

[0050] S5: Removing the guardrail 10, the anti-falling device 15, the string tube 13, the hopper 12 and the hose 14, and using a traction device to hoist and remove the left support plate 2, the right support plate 1 and the support cross bar 3 to complete the backfilling of the trench. After completing the work of S3, remove the guardrail 10, the anti-falling device 15, the string tube 13, the hopper 12 and the hose 14, and then sequentially remove each group of left support plate 2, right support plate 1 and support cross bar 3 through a traction device (which can be a crane truck) for turnover use.

[0051] The construction method of the present invention can effectively improve the construction efficiency and significantly enhance the stability of the support compared with the prior art method in which the support plates are directly inserted into the soil in their entirety and then excavation is carried out, and the support crossbars 3 are installed after the excavation is completed.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A deep trench excavation support device, characterized in that: It includes a left support assembly, a right support assembly and a plurality of support cross bars arranged between the left support assembly and the right support assembly. The two ends of the support cross bars are respectively hinged to the set positions of the left support assembly and the right support assembly and form an excavation space with the left support assembly and the right support assembly, so that the left support assembly and the right support assembly can gradually sink as the trench is excavated.

2. The deep trench excavation support device according to claim 1, characterized in that: The left supporting assembly includes a left supporting plate and an insert plate I, wherein the insert plate I is arranged at the lower end of the left supporting plate; the right supporting assembly includes a right supporting plate and an insert plate II, wherein the insert plate II is arranged at the lower end of the right supporting plate.

3. The deep trench excavation support device according to claim 2, characterized in that: The left support plate also includes a plurality of reinforcing vertical ribs I, which are arranged on the inner side of the left support plate, and one end of the support cross bar is hinged to the set position of the reinforcing vertical rib I. The right support plate also includes a plurality of reinforcing vertical ribs II, and the other end of the support cross bar is hinged to the set position of the reinforcing vertical rib II.

4. The deep trench excavation support device according to claim 3, characterized in that: The support device also includes a string tube, a hose and a hopper. The string tube is detachably fixed on the inner side of the right support plate, the hose is detachably fixedly connected to the bottom of the string tube, and the hopper is detachably connected to the top of the string tube.

5. The deep trench excavation support device according to claim 2, characterized in that: The right supporting assembly also includes a ladder, which is arranged on the inner side of the right supporting plate.

6. The deep trench excavation support device according to claim 5, characterized in that: The support device also includes a guardrail and a fall arrester. The guardrail is detachably fixed on the top of the left support component and the right support component, respectively. The fall arrester is arranged on the guardrail of the right support component and is located above the ladder.

7. The deep trench excavation support device according to claim 3, characterized in that: The reinforcing vertical ribs I and II are respectively provided with a plurality of connecting holes; A plurality of hinged seats are also provided on the reinforcing vertical ribs I and II, respectively. The two ends of the supporting cross bar are hinged to the hinged seats through hinge shafts one by one. The hinged seats are the setting positions of the reinforcing vertical ribs I and II.

8. The deep trench excavation support device according to claim 2, characterized in that: The supporting device also includes a lifting ring and a steel wire rope. The lifting ring is respectively arranged on the top of the left supporting plate and the right supporting plate, and the steel wire rope is respectively connected to the lifting ring arranged on the left supporting plate and the lifting ring arranged on the right supporting plate.

9. The deep trench excavation support device according to claim 2, characterized in that: The left supporting plate and the right supporting plate respectively include an outer plate and an inner plate, and a plurality of transverse and longitudinal reinforcing ribs are arranged between the outer plate and the inner plate.

10. A construction method, characterized in that: The deep trench excavation support device according to any one of claims 1 to 9 comprises the following steps: S1: Measure and lay out, determine the position of the trench to be excavated, assemble the left support plate, the right support plate and the support cross bar, use an excavator to excavate to the set position at the position to be excavated, use a lifting device to place the assembled left support plate, the right support plate and the support cross bar at the set position and insert the lower part of the left support plate and the right support plate into the soil; S2: Continue excavating. When a set of left supporting plates, right supporting plates and supporting cross bars are all located in the trench, use the lifting equipment to install another set of left supporting plates, right supporting plates and supporting cross bars on top of the first set of left supporting plates and right supporting plates. Complete the installation of several sets of left supporting plates, right supporting plates and supporting cross bars according to the expected trench excavation depth. S3: Stop excavation and install guardrails, fall arresters, string barrels, hoppers and hoses; S4: Carry out trench bottom cushion, pipeline installation and gravel foundation construction; S5: Remove the guardrail, fall arrester, string tube, hopper and hose, use the traction equipment to lift and remove the left support plate, right support plate and supporting cross bar, and complete the trench backfilling.

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