A deep foundation pit slope supporting structure

Abstract

The utility model relates to deep foundation pit side slope support technical field, and disclose a kind of deep foundation pit side slope support structure, including first support plate, first support plate side is equipped with second support plate, first support plate side is equipped with first sliding slot, and first sliding slot inner wall is equipped with guide rod;First support plate one end is equipped with limit slot, and first support plate other end is equipped with limit plate;First support plate side is equipped with locking assembly;Through the limit plate of specially equipped with limit plate and limit slot of first support plate, by inserting the limit plate on adjacent first support plate into the limit slot of another piece, using the inclined surface of limit slot opening, the quick transverse splicing of multiple first support plates can be realized, seamless link between support unit, make support structure stress uniform, after support operation is completed, each component can be split, overhaul and maintenance wait for next use, without overall replacement support structure, reduce construction cost.

Description

Technical Field

[0001] This utility model relates to the field of deep foundation pit slope protection technology, specifically a deep foundation pit slope protection structure. Background Technology

[0002] In deep foundation pit construction, slope protection is a crucial step in ensuring construction safety and preventing soil collapse. Traditional slope protection structures often employ steel mesh combined with shotcrete, pile support, or diaphragm walls. Existing prefabricated support panels are mostly connected by bolts or welding, resulting in low installation efficiency and stress concentration at the joints, leading to uneven stress on the support structure. Furthermore, the height of the support structure is usually fixed during fabrication, making it impossible to flexibly adjust according to the actual excavation depth or slope gradient. Some adjustable-height support structures have deficiencies in height locking; after adjustment to the required height, the lack of an effective locking mechanism makes them prone to accidental collapse due to external forces during subsequent construction. Therefore, a new deep foundation pit slope protection structure is proposed. Utility Model Content

[0003] The purpose of this utility model is to provide a deep foundation pit slope support structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a deep foundation pit slope support structure, including a first support plate, a second support plate provided on one side of the first support plate, a first sliding groove provided on one side of the first support plate, and a guide rod fixed to the inner wall of the first sliding groove;

[0005] A limiting groove is provided at one end of the first support plate, and a limiting plate is fixed at the other end of the first support plate;

[0006] A locking assembly is provided on one side of the first support plate;

[0007] The locking assembly includes a fixing frame and a hook. A sliding rod is fixed to one side of the hook. A sliding plate is slidably connected to the inner wall of the fixing frame. A push block is bolted to the inner side of the sliding plate. A connecting rod is fixed to one end of the push block.

[0008] The connecting rod has a third sliding groove at one end, and the sliding rod is slidably connected to the inner side of the third sliding groove.

[0009] Preferably, a slider is fixed to one side of the bottom of the second support plate. The slider is slidably connected to the outside of the guide rod through a linear bearing. When the slider moves upward along the guide rod, the second support plate is in the extended state.

[0010] Preferably, the opening of the inner wall of the limiting groove is provided with a slope, so that when the limiting plate of one of the first support plates is inserted into the limiting groove of another first support plate, the two first support plates are in a connected state.

[0011] Preferably, the second support plate has several slots on one side. When the hook is engaged in the slot, the position of the second support plate relative to the first support plate is fixed.

[0012] Preferably, the first support plate has a second sliding groove inside, one end of the hook is hinged to the inner wall of the second sliding groove, and a first spring is connected between the hook and the inner wall of the second sliding groove.

[0013] Preferably, a plurality of sliding columns are fixed to the inner wall of the second slide groove, the connecting rod is slidably connected to the outside of the sliding columns through a linear bearing, and the fixing frame is fixed to one side of the bottom of the first support plate.

[0014] Preferably, a cover plate is bolted to one side of the fixing frame, a second spring is sleeved on the outside of the slide rod, the two ends of the second spring are respectively connected to one side of the fixing frame and the slide plate, and the push block moves through one side of the cover plate.

[0015] Preferably, the first support plate is provided with support frames on both horizontal sides, and the support frames are in the shape of an I-beam, so that the side of the first support plate can be inserted into the groove of the I-beam-shaped support frame.

[0016] Preferably, a plurality of first connecting frames are fixed on one side of the bottom of the first support plate, and a plurality of second connecting frames are fixed on one side of the bottom of the second support plate, with crossbars inserted inside the first and second connecting frames.

[0017] Preferably, a lifting ring is fixed at the middle of the top of the second support plate, and a support plate is bolted to the top of the second support plate, with anchor rods installed on the support plate.

[0018] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0019] First, the first support plate is equipped with a dedicated limiting plate and limiting groove. By inserting the limiting plate on an adjacent first support plate into the limiting groove of another plate, and utilizing the inclined surface at the opening of the limiting groove, multiple first support plates can be quickly spliced ​​laterally. The support units are seamlessly connected, ensuring uniform stress on the support structure. After the support work is completed, each component can be disassembled, inspected, and maintained for the next use without the need to replace the entire support structure, thus reducing construction costs.

[0020] 2. When the foundation height of the first support plate cannot meet the requirements of deep foundation pit slope support, a crane can be connected to the lifting ring at the top of the second support plate. With the lifting power of the crane, the second support plate is moved upward. The slider at the bottom of the second support plate slides upward along the guide rod inside the first support plate through the linear bearing, realizing the extension action of the second support plate relative to the first support plate. This allows for flexible adjustment of the support height, meeting the requirements of deep foundation pit slope support of different depths and slopes, and improving the versatility of this device.

[0021] Third, during the rising process of the second support plate, its side slot slides relative to the hook in the locking assembly. When the lifting stops, the rebound force of the first spring pushes the hook to engage with the slot, completing the initial locking of the height position of the second support plate. This prevents it from falling unexpectedly due to external forces during subsequent construction, providing stable height support for the deep foundation pit support structure and ensuring the stability of the overall structure. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the support plate splicing structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the anchor bolt fixing structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the protruding part of the second support plate of this utility model;

[0025] Figure 4 This is a schematic diagram of the card slot structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the left-side cross-sectional structure of the first support plate of this utility model;

[0027] Figure 6 This is a schematic diagram of the hook structure of this utility model;

[0028] Figure 7 This is a schematic diagram of the slide plate structure of this utility model;

[0029] Figure 8 This is a schematic diagram of the structure of the second support plate of this utility model.

[0030] Explanation of reference numerals in the attached drawings: 1. First support plate; 101. Guide rod; 102. First slide groove; 103. Limiting groove; 104. Limiting plate; 2. Second support plate; 3. Support frame; 41. First connecting frame; 42. Second connecting frame; 43. Crossbar; 5. Locking assembly; 51. Push block; 52. Fixing frame; 53. Cover plate; 54. Slot; 55. Hook; 56. Second slide groove; 57. Slide column; 58. Connecting rod; 59. First spring; 510. Third slide groove; 511. Slide rod; 512. Slide plate; 513. Second spring; 6. Anchor rod; 7. Lifting ring; 8. Support plate. Detailed Implementation

[0031] Example

[0032] Please see Figure 1-8 This utility model provides a technical solution: a deep foundation pit slope support structure, including a first support plate 1, a second support plate 2 provided on one side of the first support plate 1, a first sliding groove 102 opened on one side of the first support plate 1, a guide rod 101 fixed on the inner wall of the first sliding groove 102, the guide rod 101 being made of metal, and a retractable screw guard sleeved on the outer side of the guide rod 101; when the second support plate 2 extends out of the top of the first support plate 1, it is bolted to the bottom of the second support plate 2, so that the bolt abuts against one side of the first support plate 1, increasing the stability after extension; when the second support plate 2 needs to be retracted, the bolt is loosened first.

[0033] A slider is fixed to one side of the bottom of the second support plate 2. The slider is slidably connected to the outside of the guide rod 101 via a linear bearing. When the slider moves upward along the guide rod 101, the second support plate 2 is in an extended state. The slider at the bottom of the second support plate 2 slides upward along the guide rod 101 in the first groove 102 to achieve smooth extension. The inner wall opening of the limiting groove 103 is provided with a slope. When the limiting plate 104 of one first support plate 1 is inserted into the limiting groove 103 of another first support plate 1, the two first support plates 1 are in a connected state. One end of the first support plate 1 has a limiting groove 103, and the other end of the first support plate 1 is fixed with a limiting plate 104. The second support plate 2 and the first support plate 1 are seamlessly slidably connected. Multiple first support plates 1 are inserted into the limiting grooves 103 of adjacent plates through the limiting plates 104 to achieve seamless horizontal splicing and form a continuous support surface. The side of the spliced ​​first support plate 1 is inserted into the groove of the support frame 3.

[0034] The first support plate 1 has support frames 3 on both horizontal sides. The support frames 3 are I-shaped. First, the I-shaped support frames 3 are fixed at the four corners of the bottom of the deep foundation pit. The side of the first support plate 1 can be inserted into the groove of the I-shaped support frame 3. Several first connecting frames 41 are fixed on one side of the bottom of the first support plate 1. Several second connecting frames 42 are fixed on one side of the bottom of the second support plate 2. Crossbars 43 are inserted into the inner side of the first connecting frames 41 and the second connecting frames 42. At the bottom of the spliced ​​support plate, the crossbars 43 are inserted through the first connecting frames 41 and the second connecting frames 42 to enhance the lateral stability of the overall structure.

[0035] A lifting ring 7 is fixed at the top center of the second support plate 2. A support plate 8 is bolted to the top of the second support plate 2. Anchor rods 6 are installed on the support plate 8. The support plate 8 and anchor rods 6 are installed on the top of the second support plate 2. The anchor rods 6 are driven into the slope to form a tie support. When the second support plate 2 is retracted, a crane is also needed to lift it onto the lifting ring 7 to prevent the second support plate 2 from falling rapidly.

[0036] The first support plate 1 is provided with a locking component 5 on one side; the locking component 5 includes a fixing frame 52 and a hook 55. A sliding rod 511 is fixed on one side of the hook 55. A sliding plate 512 is slidably connected to the inner wall of the fixing frame 52. A push block 51 is bolted to the inner side of the sliding plate 512. A connecting rod 58 is fixed to one end of the push block 51. A third sliding groove 510 is opened at one end of the connecting rod 58. The sliding rod 511 is slidably connected to the inner side of the third sliding groove 510. When the crane stops lifting, the first spring 59 pushes the hook 55 into the corresponding slot 54 to achieve automatic locking and prevent the second support plate 2 from falling back.

[0037] The second support plate 2 has several slots 54 on one side, and the edges of the slots 54 are rounded. When the hook 55 is engaged in the slot 54, the position of the second support plate 2 relative to the first support plate 1 is fixed. After each use, the inside of the slot 54 is cleaned with a brush. The first support plate 1 has a second sliding groove 56 inside. One end of the hook 55 is hinged to the inner wall of the second sliding groove 56. A first spring 59 is connected between the hook 55 and the inner wall of the second sliding groove 56. A maintenance plate (not shown in the figure) located on one side of the first spring 59 is connected to the inner wall of the second sliding groove 56 by bolts. The first spring 59 can be replaced by removing the maintenance plate. In this embodiment, the first spring 59 and the second spring 513 have a certain compression in the initial state, so that the spring has a certain elastic potential energy.

[0038] Several sliding columns 57 are fixed to the inner wall of the second slide groove 56. The connecting rod 58 is slidably connected to the outside of the sliding column 57 through a linear bearing. The fixing frame 52 is fixed to one side of the bottom of the first support plate 1. A cover plate 53 is bolted to one side of the fixing frame 52. A second spring 513 is sleeved on the outside of the sliding rod 511. The two ends of the second spring 513 are respectively connected to one side of the fixing frame 52 and the sliding plate 512. The push block 51 moves through one side of the cover plate 53. The second spring 513 can be replaced by removing the mounting bolts of the cover plate 53 and the bolts installed on the sliding plate 512. When the second support plate 2 needs to be retracted, the operator presses the push block 51, pushes the sliding plate 512 to compress the second spring 513, and drives the sliding rod 511 to move through the third slide groove 510 on the connecting rod 58, so that the hook 55 disengages from the slot 54, and the second support plate 2 can be lowered.

[0039] Working principle: In the early stage of construction, support frames 3 are fixed at the four corners of the bottom of the deep foundation pit. The support frame 3 is an I-shaped structure, and its groove can be used to fit the side of the support plate, providing basic positioning for the overall support structure. Take the corresponding number of first support plates 1, insert the positioning plate 104 on the adjacent first support plate 1 into the positioning groove 103 of another first support plate 1, and use the inclined surface at the opening of the positioning groove 103 to achieve quick alignment, complete the horizontal splicing of multiple first support plates 1, and ensure seamless connection and uniform force between support units. Embed the side of the spliced ​​first support plate 1 into the I-shaped groove of the support frame 3 to initially fix the horizontal position of the support unit, laying the foundation for subsequent height adjustment and reinforcement.

[0040] When the foundation height of the first support plate 1 cannot meet the requirements of deep foundation pit slope support, the crane is connected to the lifting ring 7 at the top of the second support plate 2. The crane's lifting power drives the second support plate 2 to move upward. The slider at the bottom of the second support plate 2 slides upward along the guide rod 101 inside the first support plate 1 through the linear bearing, realizing the extension action of the second support plate 2 relative to the first support plate 1. At the same time, the screw guard on the outside of the guide rod 101 can protect the guide components.

[0041] During the upward movement of the second support plate 2, the slot 54 on its side will slide relative to the hook 55 in the locking assembly 5. When the lifting of the second support plate 2 stops, the rebound force of the first spring 59 will push the hook 55 to engage in the corresponding slot 54, completing the initial locking of the height position of the second support plate 2. Then, a bolt is installed at the bottom of the second support plate 2, so that the bolt abuts against the side of the first support plate 1, enhancing the stability of the vertical extension of the second support plate 2.

[0042] After the height adjustment of the second support plate 2 is completed, the support plate 8 is installed on the top of the second support plate 2 with bolts. Then, the anchor rod 6 is installed on the support plate 8 and the anchor rod 6 is extended into the slope of the deep foundation pit. The anchoring force of the slope is used to strengthen the connection between the support structure and the foundation pit slope, and improve the overall anti-sliding and anti-overturning capabilities.

[0043] The crossbar 43 is inserted into the inner side of the first connecting frame 41 and the second connecting frame 42. The first connecting frame 41 is fixed to one side of the bottom of the first support plate 1, and the second connecting frame 42 is fixed to one side of the bottom of the second support plate 2. The crossbar 43 enables the upper and lower support plates to be linked to bear the force and disperse the local load.

[0044] When it is necessary to lower the height of the second support plate 2 or disassemble the support structure, press the push block 51 in the locking assembly 5. The push block 51 drives the slide plate 512 to slide in the fixed frame 52 and compress the second spring 513. When the slide plate 512 moves, it will drive the connecting rod 58 to slide along the slide column 57 through the slide rod 511. The connecting rod 58 pulls the hook 55 to rotate around its hinge point through the third slide groove 510, so that the hook 55 disengages from the slot 54 and releases the position lock of the second support plate 2. At this time, the second support plate 2 can be lowered. After releasing the push block 51, the rebound force of the second spring 513 will push the slide plate 512 and the push block 51 to reset. At the same time, the first spring 59 drives the hook 55 to return to the locked state, waiting for the next height adjustment lock.

[0045] In summary, by providing a dedicated limiting plate 104 and limiting groove 103 for the first support plate 1, the limiting plate 104 on an adjacent first support plate 1 can be inserted into the limiting groove 103 of another plate. Utilizing the inclined surface at the opening of the limiting groove 103, multiple first support plates 1 can be quickly and laterally spliced, resulting in seamless connection between support units. This ensures uniform stress distribution on the support structure. After the support work is completed, each component can be disassembled, inspected, and maintained for future use without requiring a complete replacement of the support structure, thus reducing construction costs.

[0046] When the foundation height of the first support plate 1 cannot meet the requirements of deep foundation pit slope support, a crane can be connected to the lifting ring 7 at the top of the second support plate 2. With the lifting power of the crane, the second support plate 2 can be moved upward. The slider at the bottom of the second support plate 2 slides upward along the guide rod 101 inside the first support plate 1 through the linear bearing, realizing the extension action of the second support plate 2 relative to the first support plate 1. This allows for flexible adjustment of the support height, meeting the requirements of deep foundation pit slope support of different depths and slopes, and improving the versatility of the device.

[0047] During the ascent of the second support plate 2, its side slot 54 slides relative to the hook 55 in the locking assembly 5. When the lifting stops, the rebound force of the first spring 59 pushes the hook 55 to engage with the slot 54, completing the initial locking of the height position of the second support plate 2. This prevents it from falling unexpectedly due to external forces during subsequent construction, providing stable height support for the deep foundation pit support structure and ensuring the stability of the overall structure.

Claims

1. A deep foundation pit slope protection structure, comprising a first support plate (1), characterized in that, A second support plate (2) is provided on one side of the first support plate (1), and a first groove (102) is provided on one side of the first support plate (1). A guide rod (101) is fixed on the inner wall of the first groove (102). The first support plate (1) has a limiting groove (103) at one end and a limiting plate (104) fixed at the other end. A locking component (5) is provided on one side of the first support plate (1); The locking assembly (5) includes a fixing frame (52) and a hook (55). A sliding rod (511) is fixed on one side of the hook (55). A sliding plate (512) is slidably connected to the inner wall of the fixing frame (52). A push block (51) is bolted to the inner side of the sliding plate (512). A connecting rod (58) is fixed to one end of the push block (51). The connecting rod (58) has a third groove (510) at one end, and the sliding rod (511) is slidably connected to the inside of the third groove (510).

2. The deep foundation pit slope protection structure according to claim 1, characterized in that, The second support plate (2) has a slider fixed on one side of its bottom. The slider is slidably connected to the outside of the guide rod (101) through a linear bearing. When the slider moves upward along the guide rod (101), the second support plate (2) is in an extended state.

3. The deep foundation pit slope protection structure according to claim 1, characterized in that, The inner wall opening of the limiting groove (103) is provided with a slope. When the limiting plate (104) of one of the first support plates (1) is inserted into the limiting groove (103) of another first support plate (1), the two first support plates (1) are in a connected state.

4. The deep foundation pit slope protection structure according to claim 1, characterized in that, The second support plate (2) has several slots (54) on one side. When the hook (55) is engaged in the slot (54), the position of the second support plate (2) relative to the first support plate (1) is fixed.

5. The deep foundation pit slope protection structure according to claim 4, characterized in that, The first support plate (1) has a second sliding groove (56) inside. One end of the hook (55) is hinged to the inner wall of the second sliding groove (56). A first spring (59) is connected between the hook (55) and the inner wall of the second sliding groove (56).

6. The deep foundation pit slope protection structure according to claim 5, characterized in that, The inner wall of the second slide groove (56) is fixed with several slide columns (57), the connecting rod (58) is slidably connected to the outside of the slide column (57) through a linear bearing, and the fixing frame (52) is fixed to the bottom side of the first support plate (1).

7. A deep foundation pit slope protection structure according to claim 6, characterized in that, The fixed frame (52) is bolted to one side of a cover plate (53), and a second spring (513) is sleeved on the outside of the slide rod (511). The two ends of the second spring (513) are respectively connected to one side of the fixed frame (52) and the slide plate (512). The push block (51) moves through one side of the cover plate (53).

8. The deep foundation pit slope protection structure according to claim 1, characterized in that, The first support plate (1) is provided with support frames (3) on both horizontal sides. The support frames (3) are in the shape of an I-beam. The side of the first support plate (1) can be inserted into the groove of the I-beam support frame (3).

9. A deep foundation pit slope protection structure according to claim 1, characterized in that, A number of first connecting frames (41) are fixed on one side of the bottom of the first support plate (1), and a number of second connecting frames (42) are fixed on one side of the bottom of the second support plate (2). A crossbar (43) is inserted inside the first connecting frame (41) and the second connecting frame (42).

10. A deep foundation pit slope protection structure according to claim 1, characterized in that, A lifting ring (7) is fixed at the middle of the top of the second support plate (2), and a support plate (8) is bolted to the top of the second support plate (2), and an anchor rod (6) is installed on the support plate (8).

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