Supporting method of supporting device for deep foundation pit

Abstract

The supporting method of the supporting device for the deep foundation pit comprises the following steps that S1, a supporting mechanism is installed in the deep foundation pit, and the length of a bottom plate assembly is adjusted and locked according to the bottom size of the deep foundation pit; s2, a side plate assembly is tightly attached to the side wall of the deep foundation pit, and the length of the side plate assembly is adjusted and locked according to the size of the side wall of the deep foundation pit; s3, accumulated water in the deep foundation pit is drained out of the deep foundation pit through a water pumping assembly; s4, the positions of the supporting assembly I and the supporting assembly II are adjusted and locked, so that the side plate assembly is supported, and then the side plate assembly is anchored to the side wall of the deep foundation pit through the anchoring assembly; s5, an anti-loose tightening device is installed on the side plate assembly, and the anti-loose tightening device is fixedly connected with a soil body on the periphery of the end of the deep foundation pit; according to the supporting method of the supporting device for the deep foundation pit, stable supporting of the deep foundation pit can be achieved, and meanwhile the supporting device is convenient to use and install and can be repeatedly used.

Description

Technical Field

[0001] The present invention relates to the technical field of deep foundation pit support, and in particular to a support method of a support device for a deep foundation pit. Background Art

[0002] The deep foundation pit support device used in bridge construction is a technical measure to ensure the stability of the surrounding soil during the excavation of the deep foundation pit, prevent collapse, and ensure construction safety. Deep foundation pit support technology is particularly important in bridge engineering, especially when the geological conditions are complex, the groundwater level is high, and the foundation pit is deep. The deep foundation pit support devices currently available on the market for bridge construction often use plates with larger cross-sectional dimensions and rigidity. They need to be cut, assembled, and welded on-site according to the size of the foundation pit, which is a relatively complicated operation. At the same time, the on-site cutting and assembly process is too complicated, and the steel anti-corrosion layer is easily damaged, especially in humid environments. Rust is prone to occur. Corrosion will reduce the strength and durability of the steel, posing a threat to the safety and stability of the foundation pit support device.

[0003] Therefore, the support stability and convenience of deep foundation pits in bridge construction are technical problems that need to be solved urgently in the existing technology. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a support method for a support device for a deep foundation pit, which can improve the stability of the deep foundation pit support. At the same time, the support device does not need to be cut, assembled and welded on site according to the size of the foundation pit when in use. After the support device is installed in the deep foundation pit, it can be adjusted according to the size of the deep foundation pit, so that the device has good adaptability, can be reused, and has good stability.

[0005] The supporting method of the supporting device for a deep foundation pit of the present invention comprises the following steps:

[0006] S1. Install the support mechanism in the deep foundation pit, adjust the length of the base plate assembly according to the bottom size of the deep foundation pit, and lock it;

[0007] S2. The side panel assembly is close to the side wall of the deep foundation pit and the length of the side panel assembly is adjusted according to the size of the side wall of the deep foundation pit and locked;

[0008] S3. Drain the accumulated water in the deep foundation pit out of the deep foundation pit through the pumping assembly;

[0009] S4. Adjust the positions of support assembly I and support assembly II and lock them to support the side panel assembly. Then, anchor the side panel assembly to the side wall of the deep foundation pit using the anchor assembly.

[0010] S5. Install the anti-loosening tightening device on the side plate assembly, and securely connect the anti-loosening tightening device to the soil at the outer periphery of the end of the deep foundation pit.

[0011] Further, in S1, the base plate assembly includes a base plate I and a base plate II, the base plate I is provided with a slide groove I, and one end of the base plate II is provided with a sliding part I that cooperates with the slide groove I, the sliding part I is inserted into the slide groove I and can be operated to slide along the slide groove I and can be locked, so that the length of the base plate assembly is adjustable and can be locked.

[0012] Further, in S2, the side panel assembly includes two vertical panels I and two vertical panels II, the two vertical panels I are arranged above the bottom panel I and the bottom panel II and are hinged to the bottom panel I and the bottom panel II respectively, the vertical panel I is provided with a slide groove II, the two vertical panels II are provided with a sliding portion II cooperating with the slide groove II, the sliding portion II is inserted into the protected slide groove II and can be operated to slide along the slide groove II and can be locked, so that the length of the side panel assembly is adjustable and can be locked.

[0013] Further, in S3, the water pumping assembly includes a water pump, a four-way joint, and a plurality of suction hoses, the water pump is disposed on the bottom plate II, the four-way joint is connected to the inlet of the water pump, one end of the plurality of suction hoses is respectively connected to the four-way joint, and the other ends of the plurality of suction hoses are respectively fixed to the bottom plate II and the vertical plate II in a one-to-one correspondence;

[0014] The outlet of the water pump is connected to a drainage hose, and the drainage hose is used for draining water to the outside of the deep foundation pit.

[0015] Further, in S4, the support assembly I includes two mounting seats, two locking nuts, a connecting rod I, a connecting rod II, a slider I and a slider II. The two mounting seats are detachably fixedly connected to the inner sides of the two vertical plates II in a one-to-one manner. One end of the connecting rod I is hinged to one of the mounting seats, and one end of the connecting rod II is hinged to the other mounting seat. The slider I is fixed to the other end of the connecting rod I and slidably sleeved on the connecting rod II. The slider II is fixedly connected to the other end of the connecting rod II and slidably sleeved on the connecting rod I. Two locking nuts are sleeved on the connecting rod I and the connecting rod II and are located one-to-one on the side of the slider I and the slider II close to the mounting seat, and the locking nuts are respectively threadedly engaged with the connecting rod I and the connecting rod II.

[0016] Further, in S4, the support mechanism also includes two groups of support components II, and the two groups of support components II are respectively arranged on the base plate I and the base plate II. The support components II each include a support rod, a slider III, a slide rail and a positioning pin. The slide rails are respectively arranged on the base plate I and the base plate II. The slider III is slidingly arranged on the slide rail. The slider III is provided with a positioning hole that cooperates with the positioning pin. The slide rail is provided with several positioning holes that cooperate with the positioning pin. When in use, the positioning pin passes through one of the positioning holes on the slider III and the slide rail in turn to lock the sliding position of the slider III relative to the slide rail. One end of the support rod is hinged to the slider III, and the other end of the support rod is hinged to the set position on the inner side of the vertical plate I.

[0017] Further, in S4, the anchoring assembly includes a pressure plate, a spiral rod, a threaded rod and a tightening portion, the threaded rod is threadedly connected to the vertical plate II and passes through the vertical plate II and is fixedly connected to the spiral rod, the pressure plate is sleeved on the threaded rod and is located on the inner side of the vertical plate II, and the tightening portion is fixedly connected to the end of the threaded rod located on the inner side of the vertical plate II and is located on the inner side of the pressure plate.

[0018] Furthermore, the anti-loosening tightening mechanism includes a drill rod, a wire rope I, a wire rope II, a handwheel, a screw rod, a movable block, a slide rod, a fixed block, a wire rope II, a ring and a connecting bolt. The connecting bolt is threadedly connected to the top of the vertical plate II, and the ring is sleeved on the connecting bolt. One end of the wire rope I is connected to the ring, and the other end of the wire rope I is connected to the fixed block. One end of the screw is fixedly connected to the upper position of the fixed block, and one end of the slide rod is fixedly connected to the lower position of the fixed block. The moving block is threadedly sleeved on the screw and slidably sleeved on the slide rod. One end of the wire rope II is fixedly connected to the movable block, and the other end of the wire rope II is connected to the drill rod. The drill rod is used to connect to the ground, and the handwheel is fixedly connected to the other end of the screw.

[0019] Furthermore, the drill rod is provided with barbs;

[0020] The base plate assembly further includes a positioning bolt, the base plate I is provided with a fixing hole that cooperates with the positioning bolt, and the sliding portion I is provided with a plurality of fixing holes that cooperate with the positioning bolt.

[0021] Furthermore, the support mechanism also includes a plurality of anti-slip spikes, which are evenly distributed on the outer sides of the vertical plate I and the vertical plate II, and on the bottoms of the bottom plate I and the bottom plate II.

[0022] Beneficial effects of the present invention: The support method for the support device of the deep foundation pit of the present invention does not require on-site cutting of steel for processing and assembly of the support device, thereby improving the stability and durability of the support device. At the same time, the support device can be adjusted according to the size of the deep foundation pit, thereby improving the applicability of the support device and meeting different usage needs. The support device can be reused, which is beneficial to saving materials and shortening the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0024] Figure 1 It is a structural schematic diagram of the support device of the present invention;

[0025] Figure 2 is the structural diagram of base plate II;

[0026] Figure 3 is a structural diagram of the base plate I;

[0027] Figure 4 It is a structural diagram of the pumping component;

[0028] Figure 5 It is a structural diagram of support component II;

[0029] Figure 6 is a structural diagram of the anchoring assembly;

[0030] Figure 7 Schematic diagram of the structure of support component I;

[0031] Figure 8 It is a structural diagram of the anti-loosening locking mechanism.

[0032] Reference numerals:

[0033] 1. Bottom plate II; 2. Bottom plate I; 3. Pumping assembly; 31. Pumping pump; 32. Cross joint; 33. Suction hose; 34. Drain hose; 4. Support assembly II; 41. Support rod; 42. Slider III; 43. Positioning pin; 44. Slide rail; 45. Positioning hole; 5. Vertical plate I; 6. Anchor assembly; 61. Threaded rod; 62. Screw rod; 63. Press plate; 64. Tightening part; 7. Vertical plate II; 8. Support assembly I; 81. Installation Mounting seat; 82. Connecting rod I; 83. Connecting rod II; 84. Slider II; 85. Locking nut; 86. Slider I; 9. Fixing hole; 10. Anti-loosening locking mechanism; 1001. Drill rod; 1002. Barb; 1003. Wire rope II; 1004. Handwheel; 1005. Screw; 1006. Moving block; 1007. Sliding rod; 1008. Fixed block; 1009. Wire rope I; 1010. Ring; 1011. Connecting bolt. DETAILED DESCRIPTION

[0034] like Figure 1-8 As shown: The supporting method for the supporting device of the deep foundation pit of this embodiment includes the following steps:

[0035] S1. Install the support mechanism in the deep foundation pit, adjust the length of the bottom plate assembly according to the bottom size of the deep foundation pit and lock it; the support mechanism includes a bottom plate assembly and a side plate assembly, place the bottom plate assembly at the bottom of the deep foundation pit and adjust the length of the bottom plate assembly according to the bottom wall size of the deep foundation pit (relative to the bottom wall of the deep foundation pit). Figure 1 left and right directions), so it can adapt to the support needs of different deep foundation pits.

[0036] S2. Place the side panel assembly close to the side wall of the deep foundation pit and adjust the length of the side panel assembly according to the size of the side wall of the deep foundation pit and lock it; when the length of the bottom plate assembly is adjusted, place the side panel assembly close to the side wall of the deep foundation pit and adjust the length of the side panel assembly according to the depth of the deep foundation pit and lock it, thereby completing the installation of the support mechanism.

[0037] S3. The accumulated water in the deep foundation pit is discharged out of the deep foundation pit through the pumping assembly 3; the accumulated water in the deep foundation pit is discharged out of the deep foundation pit through the pumping assembly 3, thereby avoiding the accumulation of water and reducing the erosion of the foundation pit soil.

[0038] S4. Adjust the position of support assembly I8 and support assembly II4 and lock them to form support for the side panel assembly, and then anchor the side panel assembly to the side wall of the deep foundation pit through the anchor assembly 6; when the position and length of the side panel assembly and the bottom plate assembly are adjusted and locked, adjust the position of support assembly I8 and support assembly II4 and lock them to form a stable support for the side panel assembly, and then anchor the side panel assembly to the side wall of the deep foundation pit through the anchor assembly 6 to further improve the support stability of the side panel assembly and the side wall of the deep foundation pit.

[0039] S5. Install the anti-loosening tightening device on the side panel assembly and securely connect the anti-loosening tightening device to the soil surrounding the end of the deep foundation pit. After completing the relevant adjustments in step S4, the anti-loosening tightening device securely connects the side panel assembly to the soil surrounding the end of the deep foundation pit, further increasing the support stability of the side panel assembly.

[0040] In this embodiment, in S1, the base plate assembly includes a base plate I2 and a base plate II1. A slide groove I is provided on the base plate I2. One end of the base plate II1 is provided with a sliding portion I that cooperates with the slide groove I. The sliding portion I is inserted into the slide groove I and can be operated to slide along the slide groove I and can be locked, so that the length of the base plate assembly is adjustable and can be locked. The base plate assembly is installed on the bottom wall of the deep foundation pit. The base plate I2 is a U-shaped groove plate. The sliding portion I can be inserted into the slide groove I and slide, so as to facilitate the adjustment of the spacing between the base plate I2 and the base plate II1. When the appropriate spacing is adjusted, the sliding position of the sliding portion I relative to the slide groove I is locked. Generally, holes are opened on the sliding portion I and the slide groove I, and locked with bolts and nuts. Of course, other fixing methods can also be used to achieve the length adjustment of the base plate assembly. The overall adjustment method is easy to operate and simple to use.

[0041] In this embodiment, in S2, the side panel assembly includes two vertical panels Ⅰ5 and two vertical panels Ⅱ7, the two vertical panels Ⅰ5 are arranged above the bottom panel Ⅰ2 and the bottom panel Ⅱ1 and are hinged to the bottom panel Ⅰ2 and the bottom panel Ⅱ1 respectively, the vertical panel Ⅰ5 is provided with a slide groove Ⅱ, the two vertical panels Ⅱ7 are provided with a sliding part Ⅱ cooperating with the slide groove Ⅱ, the sliding part Ⅱ is inserted into the protected slide groove Ⅱ and can be operated to slide along the slide groove Ⅱ and can be locked, so that the length of the side panel assembly is adjustable and can be locked. The vertical plate I5 is a U-shaped groove structure. The two vertical plates I5 are hinged to the bottom plate I2 and the bottom plate II1 one by one, which can improve the flexibility of the device. The vertical plate II7 is slidably connected to the vertical plate I5. Generally, holes are opened on the sliding part II and the slide groove II. When the sliding part II slides to the set position along the slide groove II, it can be fixed by passing bolts and nuts through the openings. Of course, other fixing methods can also be used, so as to facilitate the adjustment of the distance between the vertical plate I5 and the vertical plate II7. The overall adjustment method is simple and convenient for users to operate.

[0042] In this embodiment, in S3, the water pumping assembly 3 includes a water pump 31, a four-way joint 32 and a plurality of suction hoses 33. The water pump 31 is arranged on the bottom plate Ⅱ1, and the four-way joint 32 is connected to the inlet of the water pump 31. One end of the plurality of suction hoses 33 is respectively connected to the four-way joint 32, and the other ends of the plurality of suction hoses 33 are respectively fixed through the bottom plate Ⅱ1 and the vertical plate Ⅱ7. The structure of the water pump 31 is an application of the existing technology. Here, no further details are given. There are generally three suction hoses 33, and the three suction hoses 33 are correspondingly fixed through the bottom plate Ⅱ1 and the two vertical plates Ⅱ7 (generally connected to a position avoiding the sliding part Ⅱ, or connected to a position above the sliding part Ⅱ, relative to Figure 1 up and down directions).

[0043] The outlet of the water pump 31 is connected to a drainage hose 34 for draining water to the outside of the deep foundation pit. The outlet of the drainage hose 34 is located outside the deep foundation pit. When the water pump 31 is running, the three suction hoses 33 respectively draw water from the bottom and side walls of the deep foundation pit through the drainage hose 34, draining the accumulated water from the deep foundation pit. This prevents the accumulation of accumulated water and reduces soil erosion in the deep foundation pit.

[0044] In this embodiment, in S4, the support assembly I8 includes two mounting seats 81, two locking nuts 85, a connecting rod I82, a connecting rod II83, a slider I86 and a slider II84, the two mounting seats 81 are detachably fixedly connected to the inner sides of the two vertical plates II7 in a one-to-one manner, one end of the connecting rod I82 is hinged to one of the mounting seats 81, and one end of the connecting rod II83 is hinged to the other mounting seat 81, the slider I86 is fixed to the other end of the connecting rod I82 and slidably sleeved on the connecting rod II83, the slider II84 is fixedly connected to the other end of the connecting rod II83 and slidably sleeved on the connecting rod I82, two locking nuts 85 are sleeved on the connecting rod I82 and the connecting rod II83 and are located one-to-one on the side of the slider I86 and the slider II84 close to the mounting seat 81, and the locking nuts 85 are threadedly engaged with the connecting rod I82 and the connecting rod II83 respectively.

[0045] Specifically, the mounting seat 81 is generally a plate-like structure, and a mounting hole is opened on the mounting seat 81. The screw passes through the mounting hole to fix the mounting seat 81 to the vertical plate II 7, of course avoiding the position of the sliding portion II, thereby achieving a one-to-one connection between the two mounting seats 81 and the two vertical plates II 7. Figure 7 As shown, relative to Figure 7 In the up and down directions, connecting rod I 82 is located above connecting rod II 83, slider II 84 can slide along connecting rod I 82, and slider I 86 can slide along connecting rod II 83, so that the length of support assembly I 8 can be adjusted. After sliding to the required position, the locking nut 85 is adjusted to a position that is tightly against sliding I and slider II 84, so that the two connecting rods I 82 and connecting rod II 83 cannot move toward each other, but can only move away from each other, so as to achieve stable support for the side panel assembly.

[0046] In this embodiment, in S4, the support mechanism also includes two groups of support components II4, and the two groups of support components II4 are respectively arranged on the base plate I2 and the base plate II1. The support components II4 include a support rod 41, a slider III42, a slide rail 44 and a positioning pin 43. The slide rail 44 is respectively arranged on the base plate I2 and the base plate II1. The slider III42 is slidingly matched on the slide rail 44. The slider III42 is provided with a positioning hole 45 that cooperates with the positioning pin 43. The slide rail 44 is provided with several positioning holes 45 that cooperate with the positioning pin 43. When in use, the positioning pin 43 passes through one of the positioning holes 45 on the slider III42 and the slide rail 44 in turn to lock the sliding position of the slider III42 relative to the slide rail 44. One end of the support rod 41 is hinged to the slider III42, and the other end of the support rod 41 is hinged to the set position on the inner side of the vertical plate I5.

[0047] Specifically, one support rod 41 forms a triangular structure with the vertical plate I5 and the bottom plate I2, and another support rod 41 forms a triangular structure with the vertical plate I5 and the bottom plate II1. Generally, the support rod 41 is hinged to the upper position (relative to the side of the inner side of the vertical plate I5 (away from the side wall of the deep foundation pit) Figure 1 In the up and down directions), the slider III 42 is generally a groove-shaped structure and can slide along the slide rail 44. Generally, a plurality of positioning holes 45 are opened along the axial direction of the slide rail 44. A group of positioning holes 45 is provided on the slider III 42. When the slider III 42 slides along the slide rail 44 to the position corresponding to the positioning hole 45, the positioning pin 43 is passed through the positioning hole 45 to achieve locking. The overall adjustment method is simple and convenient for users to use.

[0048] In this embodiment, in S4, the anchoring assembly 6 includes a pressure plate 63, a spiral rod 62, a threaded rod 61 and a tightening portion 64. The threaded rod 61 is threadedly connected to the vertical plate Ⅱ7 and passes through the vertical plate Ⅱ7 and is fixedly connected to the spiral rod 62. The pressure plate 63 is sleeved on the threaded rod 61 and is located on the inner side of the vertical plate Ⅱ7. The tightening portion 64 is fixedly connected to the end of the threaded rod 61 located on the inner side of the vertical plate Ⅱ7 and is located on the inner side of the pressure plate 63.

[0049] Specifically, there are generally four anchor assemblies 6, and two anchor assemblies 6 are respectively provided on the two vertical plates Ⅱ7. The spiral rods 62 are fixedly connected with the spiral rods 62. Corresponding threaded holes are provided on the vertical plates Ⅱ7. The pressure plate 63 is provided on the inner side of the vertical plate Ⅱ7 (the side away from the deep foundation pit). The tightening part 64 is located on the inner side of the pressure plate 63. The tightening part 64 is a polygonal columnar structure. When in use, the spiral rod 62 is rotated by clamping the tightening part 64 with a handle, which is convenient for the user to operate and screw the spiral rod 62 into the soil of the side wall to improve the support stability of the side plate assembly and the side wall of the deep foundation pit.

[0050] In this embodiment, the anti-loosening tightening mechanism 10 includes a drill rod 1001, a wire rope I 1009, a wire rope II 1003, a handwheel 1004, a screw 1005, a moving block 1006, a slide bar 1007, a fixed block 1008, a wire rope II 1003, a collar 1010 and a connecting bolt 1011, wherein the connecting bolt 1011 is threadedly connected to the top of the vertical plate II 7, the collar 1010 is sleeved on the connecting bolt 1011, one end of the wire rope I 1009 is connected to the collar 1010, and the other end of the wire rope I 1009 is connected to the fixed block 1 008 connection, one end of the screw 1005 is fixedly connected to the upper position of the fixed block 1008, one end of the slide bar 1007 is fixedly connected to the lower position of the fixed block 1008, the moving block 1006 is threadedly sleeved on the screw 1005 and slidably sleeved on the slide bar 1007, one end of the wire rope II 1003 is fixedly connected to the moving block 1006, the other end of the wire rope II 1003 is connected to the drill rod 1001, the drill rod 1001 is used to connect to the ground, and the handwheel 1004 is fixedly connected to the other end of the screw 1005.

[0051] Specifically, up and down are relative to Figure 1 In the up and down directions, a threaded hole is provided on the top of the vertical plate II 7, and a connecting bolt 1011 is threadedly connected to the vertical plate II 7. A slot for fixing the collar 1010 is provided on the connecting bolt 1011. The collar 1010 is connected to the fixed block 1008 through the wire rope I 1009. The fixed block 1008 is connected to the slide bar 1007 and the lead screw 1005. The moving block 1006 is slidably sleeved on the slide bar 1007. The drill rod 1001 is connected to the moving block 1006 through the wire rope II 1003. The moving block 1006 cooperates with the thread of the lead screw 1005. When the lead screw 1005 is rotated by the hand wheel 1004, the moving block 1006 can be driven to slide along the slide bar 1007, thereby adjusting the drill rod 10 01 and the distance between the connecting bolt 1011. When the movable block 1006 is adjusted to the farthest distance from the fixed block 1008, and the wire rope I 1009 and the wire rope II 1003 are straightened, then the drill rod 1001 is inserted into the soil outside the deep foundation pit, and the hand wheel 1004 is turned again to drive the screw 1005 to rotate, and drive the movable block 1006 to move, so that the tension of the wire rope I 1009 and the wire rope II 1003 can be adjusted, thereby ensuring a strong tension on the vertical plate II 7, so as to enhance the support stability of the side plate assembly to the side wall of the deep foundation pit. When looseness occurs, it can be tightened again. The overall adjustment method is simple and reliable, which can further enhance the stability of the support device and avoid danger.

[0052] In this embodiment, the drill rod 1001 is provided with barbs 1003 . By providing the barbs 1003 on the drill rod 1001 , the stability of the drill rod 1001 when inserted into the surrounding soil outside the deep foundation pit can be improved.

[0053] The base plate assembly also includes positioning bolts. Base plate I2 is provided with fixing holes 9 that cooperate with the positioning bolts, and sliding portion I is provided with several fixing holes 9 that cooperate with the positioning bolts. Multiple sets of fixing holes 9 are provided along the axial direction of sliding portion I, and one set of fixing holes 9 is provided on base plate I2. By adjusting the position of positioning holes 45 on sliding portion I relative to positioning holes 45 on base plate I2, when adjusted to a coincident position, tightening is achieved using positioning bolts, resulting in a simple and reliable overall adjustment method.

[0054] In this embodiment, the support mechanism also includes several anti-slip spikes, which are evenly distributed on the outside of vertical plates I5 and II7, as well as on the bottom of bottom plates I2 and II1. The multiple anti-slip spikes on the bottom of bottom plate I2 (i.e., the side that contacts the bottom wall of the deep foundation pit), vertical plates I5, and vertical plates II7 enhance the stability of the connection with the side and bottom walls of the deep foundation pit.

[0055] The supporting method of the supporting device for a deep foundation pit of the present invention comprises the following steps: after placing the supporting mechanism in the deep foundation pit, adjusting the length of the bottom plate assembly and locking it according to the bottom wall size of the deep foundation pit, and then pressing the side plate assembly against the side wall of the deep foundation pit, adjusting the length of the side plate assembly and locking it according to the depth of the deep foundation pit, starting the pumping assembly 3, and draining the accumulated water in the deep foundation pit out of the deep foundation pit, and then adjusting the positions of the support assembly I8 and the support assembly II4 to complete the stable support of the side plate assembly, and then anchoring the side plate assembly to the side wall of the deep foundation pit through the anchor assembly 6, thereby further improving the support stability of the side wall of the deep foundation pit, and finally installing the anti-loosening tightening mechanism 10, rotating the screw 1005 through the handwheel 1004, and driving the moving block 1006 along the slide rod 1007 Slide to adjust the distance between the drill rod 1001 and the connecting bolt 1011. When the movable block 1006 is adjusted to the farthest distance from the fixed block 1008, and the wire rope I 1009 and the wire rope II 1003 are straightened, the drill rod 1001 is inserted into the soil outside the deep foundation pit, and the hand wheel 1004 is turned again to drive the screw 1005 to rotate, and drive the movable block 1006 to move, so as to adjust the tension of the wire rope I 1009 and the wire rope II 1003, thereby ensuring a strong tension on the vertical plate II 7, so as to enhance the support stability of the side plate assembly on the side wall of the deep foundation pit. When looseness occurs, it can be tightened again. The overall adjustment method is simple and reliable, which can further enhance the stability of the support device and avoid danger.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A supporting method for a deep foundation pit supporting device, characterized in that: The following steps are involved: S1. Install the support mechanism in the deep foundation pit, adjust the length of the base plate assembly according to the bottom size of the deep foundation pit, and lock it; S2. The side panel assembly is close to the side wall of the deep foundation pit and the length of the side panel assembly is adjusted according to the size of the side wall of the deep foundation pit and locked; S3. Drain the accumulated water in the deep foundation pit out of the deep foundation pit through the pumping assembly; S4. Adjust the positions of support assembly I and support assembly II and lock them to support the side panel assembly. Then, anchor the side panel assembly to the side wall of the deep foundation pit using the anchor assembly. S5. Install the anti-loosening tightening device on the side plate assembly, and securely connect the anti-loosening tightening device to the soil at the outer periphery of the end of the deep foundation pit.

2. The supporting method for a deep foundation pit according to claim 1, characterized in that: In S1, the base plate assembly includes a base plate I and a base plate II, the base plate I is provided with a slide groove I, and one end of the base plate II is provided with a sliding part I that cooperates with the slide groove I, the sliding part I is inserted into the slide groove I and can be operated to slide along the slide groove I and can be locked, so that the length of the base plate assembly is adjustable and can be locked.

3. The supporting method for a deep foundation pit according to claim 2, characterized in that: In S2, the side panel assembly includes two vertical panels I and two vertical panels II, the two vertical panels I are arranged above the bottom panel I and the bottom panel II and are hinged to the bottom panel I and the bottom panel II respectively, the vertical panel I is provided with a slide groove II, the two vertical panels II are provided with a sliding part II cooperating with the slide groove II, the sliding part II is inserted into the protected slide groove II and can be operated to slide along the slide groove II and can be locked, so that the length of the side panel assembly is adjustable and can be locked.

4. The supporting method for a deep foundation pit according to claim 3, characterized in that: In S3, the water pumping assembly includes a water pump, a four-way joint, and a plurality of suction hoses. The water pump is disposed on the bottom plate II, the four-way joint is connected to the inlet of the water pump, one end of the plurality of suction hoses is respectively connected to the four-way joint, and the other ends of the plurality of suction hoses are respectively fixed to the bottom plate II and the vertical plate II in a one-to-one correspondence. The outlet of the water pump is connected to a drainage hose, and the drainage hose is used for draining water to the outside of the deep foundation pit.

5. The supporting method for a deep foundation pit according to claim 3, characterized in that: In S4, the support assembly I includes two mounting seats, two locking nuts, a connecting rod I, a connecting rod II, a slider I and a slider II. The two mounting seats are detachably fixedly connected to the inner sides of the two vertical plates II in a one-to-one manner. One end of the connecting rod I is hinged to one of the mounting seats, and one end of the connecting rod II is hinged to the other mounting seat. The slider I is fixed to the other end of the connecting rod I and slidably sleeved on the connecting rod II. The slider II is fixedly connected to the other end of the connecting rod II and slidably sleeved on the connecting rod I. Two locking nuts are sleeved on the connecting rod I and the connecting rod II and are located one-to-one on the side of the slider I and the slider II close to the mounting seat, and the locking nuts are respectively threaded with the connecting rod I and the connecting rod II.

6. The supporting method for a deep foundation pit according to claim 3, characterized in that: In S4, the support mechanism also includes two groups of support components II, and the two groups of support components II are respectively arranged on the base plate I and the base plate II. The support components II each include a support rod, a slider III, a slide rail and a positioning pin. The slide rails are respectively arranged on the base plate I and the base plate II. The slider III is slidingly arranged on the slide rail. The slider III is provided with a positioning hole that cooperates with the positioning pin. The slide rail is provided with several positioning holes that cooperate with the positioning pin. When in use, the positioning pin passes through one of the positioning holes on the slider III and the slide rail in turn to lock the sliding position of the slider III relative to the slide rail. One end of the support rod is hinged to the slider III, and the other end of the support rod is hinged to the set position on the inner side of the vertical plate I.

7. The supporting method for a deep foundation pit according to claim 3, characterized in that: In S4, the anchoring assembly includes a pressure plate, a spiral rod, a threaded rod and a tightening portion. The threaded rod is threadedly connected to the vertical plate II and passes through the vertical plate II and is fixedly connected to the spiral rod. The pressure plate is sleeved on the threaded rod and is located on the inner side of the vertical plate II. The tightening portion is fixedly connected to the end of the threaded rod located on the inner side of the vertical plate II and is located on the inner side of the pressure plate.

8. The supporting method for a deep foundation pit according to claim 3, characterized in that: The anti-loosening tightening mechanism includes a drill rod, a wire rope I, a wire rope II, a handwheel, a screw rod, a movable block, a slide rod, a fixed block, a wire rope II, a collar and a connecting bolt. The connecting bolt is threadedly connected to the top of the vertical plate II, the collar is sleeved on the connecting bolt, one end of the wire rope I is connected to the collar, the other end of the wire rope I is connected to the fixed block, one end of the screw is fixedly connected to the upper position of the fixed block, one end of the slide rod is fixedly connected to the lower position of the fixed block, the moving block is threadedly sleeved on the screw and slidably sleeved on the slide rod, one end of the wire rope II is fixedly connected to the movable block, the other end of the wire rope II is connected to the drill rod, the drill rod is used to be connected to the ground, and the handwheel is fixedly connected to the other end of the screw.

9. The supporting method for a deep foundation pit according to claim 8, characterized in that: The drill rod is provided with barbs; The base plate assembly further includes a positioning bolt, the base plate I is provided with a fixing hole that cooperates with the positioning bolt, and the sliding portion I is provided with a plurality of fixing holes that cooperate with the positioning bolt.

10. The supporting method for a deep foundation pit according to claim 3, characterized in that: The support mechanism further includes a plurality of anti-slip spikes, which are evenly distributed on the outsides of the vertical plate I and the vertical plate II, and on the bottoms of the bottom plate I and the bottom plate II.

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