Foundation pit supporting structure

Abstract

The utility model relates to the technical field of foundation pit supporting, in particular to a foundation pit supporting structure which comprises two rows of steel sheet piles, locking openings in the two sides of every two adjacent steel sheet piles are connected in an inserted mode, two rows of protruding blocks are fixedly connected to the steel sheet piles in the same row, the protruding blocks in the same row are fixedly connected with the same enclosing purlin, and the enclosing purlin is fixedly connected with the steel sheet piles in the same row. Sliding frames are fixedly connected to the two surrounding purlins on one side, supporting rods are slidably connected to the sliding frames, a plurality of limiting grooves are formed in the supporting rods at equal intervals, a limiting block is clamped in one limiting groove, the limiting block is slidably connected with the sliding frames, sliding sleeves are fixedly connected to the supporting rods, and two lead screws are rotatably connected to the sliding sleeves; the lead screw is in threaded connection with a sliding rod, the sliding rod is in sliding connection with the sliding sleeve, and the end of the sliding rod is fixedly connected with the enclosing purlin on the other side. The length of the supporting rod is adjusted through sliding of the sliding frame and the supporting rod, meanwhile, the length of the supporting structure is further adjusted through the fine adjusting structure, and the supporting effect of the supporting structure on the steel sheet piles on the two sides is better.

Description

Technical Field

[0001] This utility model relates to a support structure, specifically a foundation pit support structure, and belongs to the field of foundation pit support technology. Background Technology

[0002] Foundation pit support refers to the support, reinforcement, and protection measures taken during the excavation of a foundation pit to ensure the safety of the underground structure construction, the pit sidewalls, and the surrounding environment. Its main purpose is to prevent the soil around the foundation pit from collapsing due to active earth pressure, ensure the smooth progress of the construction process, and protect the surrounding environment from damage. Types of foundation pit support include inclined column support, anchor bolt support, soil nailing wall support, and sheet pile support. Among them, sheet pile support uses sheet piles as the support structure to form a closed pile wall structure to resist the lateral pressure of the soil on the foundation pit. In foundation pits such as those used in river construction, a support rod is usually installed between two rows of sheet piles. The support rod can form a more stable support system, which can more effectively resist the pressure from the soil and groundwater and prevent the sheet piles from deforming or displacing.

[0003] However, in traditional sheet pile support structures, the length of the support rods is fixed, requiring bolts to connect multiple support rods of different lengths so that the support rods can be used to adapt to different pit widths. However, it is difficult to precisely adjust the length of the support rods, resulting in poor support effect and cumbersome and inflexible operation. Utility Model Content

[0004] The purpose of this utility model is to provide a foundation pit support structure to solve the above problems. By sliding the sliding frame and the support rod, the length of the support rod can be adjusted. At the same time, the length of the support structure can be further adjusted by the fine adjustment structure, so that the support structure can better support the steel sheet piles on both sides.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a foundation pit support structure, comprising two rows of sheet piles, with interlocking joints on both sides of adjacent sheet piles; two rows of protrusions fixedly connected to the sheet piles in the same row; a common waler fixedly connected to the protrusions in the same row; a support structure installed on each of the two walers on one side; the support structure includes a sliding frame; a sliding frame fixedly connected to each of the two walers on one side; a support rod slidably connected to the sliding frame; multiple limiting grooves equally spaced on the support rod; a limiting block engaging in one of the limiting grooves; the limiting block slidably connected to the sliding frame; a fine adjustment structure installed at the end of the support rod; the fine adjustment structure includes a sliding sleeve; a sliding sleeve fixedly connected to the support rod; two lead screws rotatably connected to the sliding sleeve; a sliding rod threadedly connected to the lead screws; the sliding rod slidably connected to the sliding sleeve; and the end of the sliding rod fixedly connected to the waler on the other side.

[0006] Preferably, an anti-detachment plate is fixedly connected to the limiting block, and a guide rod is fixedly connected to the sliding frame, with the anti-detachment plate and the guide rod being slidably connected.

[0007] Preferably, a tension spring is fitted on the guide rod, one end of which is fixedly connected to the slide frame, and the other end of which is fixedly connected to the anti-detachment plate.

[0008] Preferably, a protective box is fixedly connected to the sliding frame, and the limiting block is slidably connected to the protective box.

[0009] Preferably, the sliding sleeve has a "U" shaped structure and the sliding rod has a "T" shaped structure.

[0010] Preferably, a rotating rod is slidably connected to the lead screw, and the rotating rod is perpendicular to the lead screw.

[0011] Preferably, a positioning block is fixedly connected to the protrusion, and the positioning block is inserted into the waler.

[0012] Preferably, the bottom end of the sheet pile is fixedly connected to an insert plate, which has a blade-shaped structure.

[0013] The beneficial effects of this utility model are as follows: the interlocking joints on both sides of two adjacent sheet piles are interlocked; two rows of protrusions are fixedly connected to the sheet piles in the same row; the same waler is fixedly connected to the protrusions in the same row; a sliding frame is fixedly connected to each of the two walers on one side; a support rod is slidably connected to the sliding frame; multiple limiting grooves are equidistantly opened on the support rod; a limiting block is engaged in one of the limiting grooves; the limiting block is slidably connected to the sliding frame; a sliding sleeve is fixedly connected to the support rod; two threaded rods are rotatably connected to the sliding sleeve; a sliding rod is threadedly connected to the threaded rod; the sliding rod is slidably connected to the sliding sleeve; and the end of the sliding rod is fixedly connected to the waler on the other side. By sliding the sliding frame and the support rod, the length of the support rod can be adjusted. At the same time, the length of the support structure can be further adjusted through the fine adjustment structure, so that the support structure provides better support for the sheet piles on both sides. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 for Figure 1 The diagram shows an enlarged view of part A.

[0016] Figure 3 This is a schematic diagram of the connection structure between the sliding frame and the support rod of this utility model;

[0017] Figure 4 for Figure 3 The diagram shows an enlarged view of part B.

[0018] Figure 5 for Figure 3 The diagram shows an enlarged view of section C.

[0019] Figure 6 This is a schematic diagram of the connection structure between the lead screw and the slide bar of this utility model;

[0020] Figure 7 This is a schematic diagram of the connection structure between the protrusion and the waler of this utility model;

[0021] Figure 8 for Figure 7 The diagram shows an enlarged view of part D.

[0022] In the diagram: 1. Sheet pile; 2. Protrusion; 3. Waler; 4. Support structure; 401. Sliding frame; 402. Support rod; 403. Limiting groove; 404. Limiting block; 405. Anti-detachment plate; 406. Guide rod; 407. Tension spring; 408. Protective box; 5. Fine adjustment structure; 501. Sliding sleeve; 502. Sliding rod; 503. Lead screw; 504. Rotating rod; 6. Insert plate; 7. Positioning block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-8As shown, a foundation pit support structure includes two rows of sheet piles 1. The interlocking joints on both sides of two adjacent sheet piles 1 are interlocked. Two rows of protrusions 2 are fixedly connected to the sheet piles 1 in the same row. The same waler 3 is fixedly connected to the protrusions 2 in the same row. A support structure 4 is installed on each of the two walers 3 on one side. The support structure 4 includes a sliding frame 401. A sliding frame 401 is fixedly connected to each of the two walers 3 on one side. A support rod 402 is slidably connected to the sliding frame 401. Multiple limiting grooves 403 are equally spaced on the support rod 402. A limiting block 404 engages in one of the limiting grooves 403. The limiting block 404 is slidably connected to the sliding frame 401. The end of the support rod 402 is equipped with a fine adjustment structure 5, which includes a sliding sleeve 501. The sliding sleeve 501 is fixedly connected to the support rod 402. Two lead screws 503 are rotatably connected to the sliding sleeve 501. A sliding rod 502 is threadedly connected to the lead screw 503. The sliding rod 502 is slidably connected to the sliding sleeve 501. The end of the sliding rod 502 is fixedly connected to the waler 3 on the other side. A tension spring 407 is sleeved on the guide rod 406. One end of the tension spring 407 is fixedly connected to the sliding frame 401, and the other end of the tension spring 407 is fixedly connected to the anti-detachment plate 405. The sliding sleeve 501 has a "U" shape, and the sliding rod 502 has a "T" shape.

[0025] As a technical optimization of this utility model, an anti-detachment plate 405 is fixedly connected to the limiting block 404, and a guide rod 406 is fixedly connected to the sliding frame 401. The anti-detachment plate 405 and the guide rod 406 are slidably connected. The guide rod 406 has a guiding effect on the limiting block 404, making the sliding of the limiting block 404 more stable.

[0026] As a technical optimization of this utility model, a protective box 408 is fixedly connected to the sliding frame 401, and the limiting block 404 is slidably connected to the protective box 408; the protective box 408 provides good protection for components such as the limiting block 404 and the tension spring 407, and prevents rainwater from damaging the limiting block 404 and the tension spring 407.

[0027] As a technical optimization of this utility model, a rotating rod 504 is slidably connected to the lead screw 503, and the rotating rod 504 is perpendicular to the lead screw 503; this facilitates the rotation of the lead screw 503 by the rotating rod 504, making it more convenient for construction personnel to operate the lead screw 503.

[0028] As a technical optimization of this utility model, a positioning block 7 is fixedly connected to the protrusion 2, and the positioning block 7 is inserted into the waler 3; by inserting the waler 3 into the positioning block 7 on the protrusion 2 in the same row, the waler 3 is quickly positioned, thereby the waler 3 is initially fixed.

[0029] As a technical optimization of this utility model, the bottom end of the sheet pile 1 is fixedly connected with an insert plate 6, which has a blade-shaped structure. The blade-shaped structure of the insert plate 6 improves the soil breaking effect and makes it easier for the sheet pile 1 to be driven into the ground.

[0030] When using this invention, if a support structure needs to be installed in a construction pit such as a river channel, a crane is used to lift the sheet piles 1 to the insertion point for insertion. During insertion, the interlocking joints of two adjacent sheet piles 1 must be aligned. Then, the vibration force generated by the vibratory pile driver is used to drive the two rows of sheet piles 1 into the ground one by one. Next, the pit is excavated. Then, the waler 3 is inserted into the positioning block 7 on the protrusion 2 of the same row to quickly position the waler 3, thereby initially fixing the waler 3. Then, bolts are used to connect the waler 3 to the protrusion 2, making the installation of the waler 3 more secure. The waler 3 can effectively resist deformation caused by external loads or various factors during construction. To ensure the stability and safety of the sheet pile 1, the support structure 4 is installed. The length of the support rod 402 is initially adjusted according to the width of the pit. The limiting block 404 is pulled outward from the sliding frame 401. The limiting block 404, through the anti-detachment plate 405, causes the tension spring 407 to extend, thus preventing the limiting block 404 from engaging with the limiting groove 403 on the support rod 402. Then, the support rod 402 is pulled outward from the sliding frame 401. When the support rod 402 is adjusted to the appropriate length, the limiting block 404 is released. The tension spring 407 resets and causes the limiting block 404 to engage with the corresponding limiting groove 403, thereby adjusting the length of the support rod 402. Then... The end of the sliding frame 401 is fixedly connected to one side of the waler 3. Then, the two rotating rods 504 are rotated in sequence. The rotating rods 504 drive the lead screw 503 to rotate. The lead screw 503 drives the sliding rod 502 to slide towards the other side of the waler 3. The rotating rods 504 are rotated until the end of the sliding rod 502 abuts against the other side of the waler 3. Then, the end of the sliding rod 502 is connected to the other side of the waler 3 with bolts. This allows the support structure 4 and the fine adjustment structure 5 to cooperate with each other to support the sheet piles 1 on both sides. This can more effectively resist the pressure from the soil and groundwater, prevent the sheet piles 1 from deforming or displacing. The sliding frame 401 and the support rod 402 slide together. The combined structure allows for quick and flexible adjustment of the length of the support rod 402, making installation more convenient, time-saving, and labor-saving. Simultaneously, the fine adjustment structure 5 further supplements the support structure 4, ensuring a tighter contact between the support structure 4 and the sheet piles 1 on both sides, resulting in better performance. The protective box 408 provides excellent protection for components such as the limiting block 404 and tension spring 407, preventing damage from rainwater. The guide rod 406 guides the limiting block 404, making its sliding more stable. The blade-shaped insert plate 6 improves soil breaking and facilitates the driving of the sheet piles 1 into the ground.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A foundation pit support structure, comprising two rows of steel sheet piles (1), characterized in that: The interlocking joints on both sides of two adjacent sheet piles (1) are interlocked. Two rows of protrusions (2) are fixedly connected to the sheet piles (1) in the same row. The same waler (3) is fixedly connected to the protrusions (2) in the same row. A support structure (4) is installed on both walers (3) on one side. The support structure (4) includes a sliding frame (401). A sliding frame (401) is fixedly connected to both walers (3) on one side. A support rod (402) is slidably connected to the sliding frame (401). Multiple limiting grooves (403) are equidistantly provided on the support rod (402). One of the limiting grooves is... A limiting block (404) is engaged in the groove (403). The limiting block (404) is slidably connected to the slide frame (401). A fine adjustment structure (5) is installed at the end of the support rod (402). The fine adjustment structure (5) includes a sliding sleeve (501). The sliding sleeve (501) is fixedly connected to the support rod (402). Two lead screws (503) are rotatably connected to the sliding sleeve (501). A sliding rod (502) is threadedly connected to the lead screw (503). The sliding rod (502) is slidably connected to the sliding sleeve (501). The end of the sliding rod (502) is fixedly connected to the waler (3) on the other side.

2. The foundation pit support structure according to claim 1, characterized in that: An anti-detachment plate (405) is fixedly connected to the limiting block (404), and a guide rod (406) is fixedly connected to the sliding frame (401). The anti-detachment plate (405) and the guide rod (406) are slidably connected.

3. The foundation pit support structure according to claim 2, characterized in that: A tension spring (407) is fitted on the guide rod (406). One end of the tension spring (407) is fixedly connected to the slide frame (401), and the other end of the tension spring (407) is fixedly connected to the anti-detachment plate (405).

4. The foundation pit support structure according to claim 3, characterized in that: A protective box (408) is fixedly connected to the sliding frame (401), and the limiting block (404) is slidably connected to the protective box (408).

5. The foundation pit support structure according to claim 1, characterized in that: The sliding sleeve (501) has a "U" shaped structure, and the sliding rod (502) has a "T" shaped structure.

6. The foundation pit support structure according to claim 1, characterized in that: A rotating rod (504) is slidably connected to the lead screw (503), and the rotating rod (504) is perpendicular to the lead screw (503).

7. The foundation pit support structure according to claim 1, characterized in that: A positioning block (7) is fixedly connected to the protrusion (2), and the positioning block (7) is inserted into the waler (3).

8. The foundation pit support structure according to claim 1, characterized in that: The bottom end of the sheet pile (1) is fixedly connected to a insert plate (6), which has a blade-shaped structure.

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