Waterproof curtain structure for foundation pit protection

Abstract

The utility model relates to the technical field of foundation pit protection, in particular to a waterproof curtain structure for foundation pit protection, which comprises two rows of Larsen steel sheet piles, locking openings of the two rows of Larsen steel sheet piles are mutually inserted, a plurality of H-shaped steels are inserted on one side of the Larsen steel sheet piles in the same row, the end parts of the H-shaped steels are fixedly connected with a waterproof curtain body, and the waterproof curtain body is fixedly connected with the waterproof curtain body. The other faces of the Larsen steel sheet piles in the same row are fixedly connected with a plurality of supporting blocks, the supporting blocks are provided with the same enclosing purlin, the enclosing purlin is rotationally connected with a lead screw, threads at the two ends of the lead screw are opposite, the lead screw is in threaded connection with two sliding plates, the sliding plates are in sliding connection with the enclosing purlin, and the same supporting rod is installed between the two enclosing purlin. One end of the supporting rod is connected with a sliding rod in a sliding mode, the end of the sliding rod and the end of the supporting rod are connected with the two surrounding purlins in an inserted mode respectively, the two sliding plates on one surrounding purlin abut against the end of the supporting rod, and the two sliding plates on the other surrounding purlin abut against the end of the sliding rod. And the supporting structure is more convenient and quicker to mount.

Description

Technical Field

[0001] The utility model relates to a water-stop curtain structure, in particular to a water-stop curtain structure for foundation pit protection, belonging to the technical field of foundation pit protection. Background Art

[0002] Waterstop curtain is the general term for the peripheral waterstop series of the main body of the project. It is a concept used to prevent or reduce the flow of groundwater from the side walls and bottom of the foundation pit into the foundation pit. The waterstop curtain structure is generally composed of a retaining pile part, a waterstop curtain part and a supporting part, which plays the role of a retaining wall. The retaining pile part consolidates the soil behind the retaining wall, the waterstop curtain part blocks the exchange of water layers inside and outside the foundation pit, and the supporting part provides necessary support for the foundation pit retaining structure to ensure the stability and safety of the overall structure.

[0003] However, in traditional water-stop curtain structures, support rods need to be fixed to the purlins one by one using bolts during installation. Since the support rods are often long and heavy, they need to be hoisted using equipment such as cranes and positioned and fixed in the air. The operation is relatively slow and aerial work is extremely inconvenient. Utility Model Content

[0004] The purpose of this utility model is to provide a water-stop curtain structure for foundation pit protection in order to solve the above problems. The two slides are driven toward the middle of the purlin by the screw thread and simultaneously resist the ends of multiple support rods and slide rods, so that multiple support rods and slides are quickly fixed, thereby making the installation of the support structure more convenient and quick.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions: a water-stop curtain structure for foundation pit protection, comprising two rows of Larsen steel sheet piles, the locks of the two rows of Larsen steel sheet piles are plugged into each other, one side of the Larsen steel sheet piles in the same row is plugged with multiple H-shaped steels, the ends of the H-shaped steels are fixedly connected to the water-stop curtain body, the other side of the Larsen steel sheet piles in the same row is fixedly connected with multiple support blocks, the same purlin is installed on the multiple support blocks, the purlin is installed with a fixed structure, the fixed structure includes a screw rod, the purlin is rotated A screw rod is connected, and the threads at both ends of the screw rod are opposite. Two slides are threadedly connected to the screw rod, and the slides are slidably connected to the purlins. The same supporting structure is installed on the two purlins, and the supporting structure includes a support rod. The same support rod is installed between the two purlins, and one end of the support rod is slidably connected to a sliding rod. The end of the sliding rod and the end of the support rod are respectively plugged into the two purlins, and the two slides on one of the purlins conflict with the end of the support rod, and the two slides on the other purlin conflict with the end of the sliding rod.

[0006] Preferably, a plurality of guide rods are fixedly connected to the slide plate, and the guide rods are slidably connected to the surrounding purlin.

[0007] Preferably, the screw rod and the sliding rod are perpendicular to each other, and the cross section of the guide rod is a "T"-shaped structure.

[0008] Preferably, a plurality of clamping blocks are fixedly connected to the slide plate, and the ends of the slide rod and the ends of the support rod are provided with clamping slots, and the clamping blocks are engaged with the corresponding clamping slots.

[0009] Preferably, the ends of the clamping blocks are in a trapezoidal structure, and the clamping blocks on two adjacent slides are symmetrically distributed about the middle of the surrounding purlin.

[0010] Preferably, the top end of the screw rod is slidably connected to a rotating rod, and the cross-sections of both ends of the rotating rod are in a "T"-shaped structure.

[0011] Preferably, a connecting plate is fixedly connected to the sliding rod, the connecting plate contacts the purlin, two hydraulic rods are installed on the connecting plate, a connecting block is fixedly connected to the support rod, and the extended end of the hydraulic rod is fixedly connected to the connecting block.

[0012] Preferably, the cross-section of the sliding rod is a rectangular structure, and the two hydraulic rods are symmetrically distributed.

[0013] The beneficial effects of the utility model are as follows: the locking mouths of the two rows of Larsen steel sheet piles are plugged into each other, one side of the Larsen steel sheet piles in the same row is plugged with multiple H-shaped steels, the ends of the H-shaped steels are fixedly connected to the water-stop curtain body, and the other side of the Larsen steel sheet piles in the same row is fixedly connected to multiple support blocks, and the same purlin is installed on the multiple support blocks, and a screw rod is rotatably connected to the purlin, and the threads at both ends of the screw rod are opposite. Two slides are threadedly connected to the screw rod, and the slide is slidably connected to the purlin, and the same support rod is installed between the two purlins, and one end of the support rod is slidably connected to the sliding rod, and the end of the sliding rod and the end of the support rod are respectively plugged into the two purlins, and the two slides on one purlin are in conflict with the end of the support rod, and the two slides on the other purlin are in conflict with the end of the sliding rod; the two slides are driven by the screw rod thread to slide toward the middle of the purlin and simultaneously conflict with the ends of multiple support rods and the sliding rod, so that the multiple support rods and the slides are quickly fixed, thereby making the installation of the support structure more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 for Figure 1 The enlarged structural diagram of part A is shown;

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

[0017] Figure 4 for Figure 3 The enlarged structural diagram of part B is shown;

[0018] Figure 5 This is a schematic diagram of the connection structure between the water-stop curtain and the H-shaped steel of the utility model;

[0019] Figure 6 for Figure 5 The enlarged structural diagram of part C is shown;

[0020] Figure 7 for Figure 5 The enlarged structural diagram of part D is shown.

[0021] In the figure: 1. Larsen steel sheet pile; 2. H-shaped steel; 3. Water-stop curtain body; 4. Support block; 5. Purlin; 6. Fixed structure; 601. Screw rod; 602. Slide plate; 603. Guide rod; 604. Block; 605. Slot; 606. Rotating rod; 7. Support structure; 701. Support rod; 702. Slide rod; 703. Connecting plate; 704. Hydraulic rod; 705. Connecting block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 7As shown, a water-stop curtain structure for foundation pit protection comprises two rows of Larsen steel sheet piles 1, the locking ends of the two rows of Larsen steel sheet piles 1 are plugged into each other, a plurality of H-shaped steels 2 are plugged into one side of the Larsen steel sheet piles 1 in the same row, the ends of the H-shaped steels 2 are fixedly connected to the water-stop curtain body 3, a plurality of support blocks 4 are fixedly connected to the other side of the Larsen steel sheet piles 1 in the same row, a plurality of support blocks 4 are installed on the same purlin 5, a fixed structure 6 is installed on the purlin 5, the fixed structure 6 comprises a screw rod 601, a screw rod 601 is rotatably connected to the purlin 5, the threads at both ends of the screw rod 601 are opposite, and the screw rod 601 is screwed to the purlin 5. Two slides 602 are threadedly connected to the rod 601, and the slides 602 are slidably connected to the purlins 5. The same support structure 7 is installed on the two purlins 5, and the support structure 7 includes a support rod 701. The same support rod 701 is installed between the two purlins 5. One end of the support rod 701 is slidably connected to the sliding rod 702, and the ends of the sliding rod 702 and the ends of the support rod 701 are respectively plugged into the two purlins 5. The two slides 602 on one of the purlins 5 conflict with the end of the support rod 701, and the two slides 602 on the other purlin 5 conflict with the end of the sliding rod 702.

[0024] As a technical optimization solution of the present invention, a plurality of guide rods 603 are fixedly connected to the slide plate 602, the guide rods 603 are slidably connected to the purlin 5, the screw rod 601 and the sliding rod 702 are perpendicular to each other, and the cross-section of the guide rod 603 is a "T"-shaped structure; the setting of the guide rod 603 has a guiding effect on the slide plate 602, making the slide plate 602 slide more stably.

[0025] As a technical optimization solution of the present invention, a plurality of blocks 604 are fixedly connected to the slide plate 602, and the ends of the slide rod 702 and the support rod 701 are provided with a card slot 605, and the blocks 604 are engaged with the corresponding card slots 605. The ends of the blocks 604 are trapezoidal in structure, and the blocks 604 on the two adjacent slide plates 602 are symmetrically distributed about the middle part of the purlin 5; the blocks 604 are engaged with the corresponding card slots 605, so that the connection between the support rod 701 and the slide rod 702 is more stable, and the support rod 701 and the slide rod 702 are prevented from slipping off the purlin 5, and the end of the block 604 is trapezoidal in structure and has a guiding function, so that the block 604 is easy to be engaged into the card slot 605.

[0026] As a technical optimization solution of the present invention, the top end of the screw rod 601 is slidably connected to a rotating rod 606 , and the cross-sections of both ends of the rotating rod 606 are “T”-shaped structures; the setting of the rotating rod 606 facilitates the operation of the screw rod 601 .

[0027] As a technical optimization solution of the present invention, a connecting plate 703 is fixedly connected to the sliding rod 702, and the connecting plate 703 is in conflict with the purlin 5. Two hydraulic rods 704 are installed on the connecting plate 703, and a connecting block 705 is fixedly connected to the support rod 701. The extended end of the hydraulic rod 704 is fixedly connected to the connecting block 705. The cross-section of the sliding rod 702 is a rectangular structure, and the two hydraulic rods 704 are symmetrically distributed; when the hydraulic rod 704 is started, the hydraulic rod 704 extends and drives the sliding rod 702 to slide between the support rod 701, so that the sliding rod 702 and the support rod 701 are respectively pressed against two rows of Larsen steel sheet piles 1, so that the foundation pit support structure is more stable and firm.

[0028] When the utility model is in use, the Larsen steel sheet pile 1 is first hoisted to the pile insertion point by a crane for pile insertion. When inserting the pile, the locking openings at both ends of the two adjacent Larsen steel sheet piles 1 must be aligned, and then the vibration force generated by the vibrating pile driver is used to drive the two rows of Larsen steel sheet piles 1 into the ground one by one. Since the back of the Larsen steel sheet pile 1 is fixedly connected to two connecting strips with an "L"-shaped cross-section, a socket is formed between the two connecting strips and the Larsen steel sheet pile 1, and then one end of the H-shaped steel 2 is aligned with the socket on the back of the Larsen steel sheet pile 1, and the H-shaped steel 2 is inserted downward to connect the H-shaped steel and the Larsen steel sheet pile 1, thereby initially forming a good support structure, and multiple Larsen steel sheet piles 1 are inserted into each other through the locking openings at both ends. The connection has good sealing and can play a certain waterproof effect. The H-shaped steel has high rigidity and strong bending resistance, which can support the Larsen steel sheet pile 1, thereby enhancing the stability of the Larsen steel sheet pile 1 support; then use a high-pressure jet grouting machine close to the other end of the H-shaped steel to spray cement slurry into the soil layer and mix it with the soil to form a continuous overlapping water-stop curtain body 3, thereby further blocking the water layer exchange inside and outside the foundation pit; then carry out the pit digging operation, and after the pit digging is completed, weld the support block 4 on the Larsen steel sheet pile 1, and then weld the purlin 5 to the upper end surface of multiple support blocks 4 in the same row, plug the end of the support rod 701 facing away from the sliding rod 702 with one of the purlins 5, and then connect the end of the sliding rod 702 with Another purlin 5 is plugged in, so that the support structure 7 is initially fixed. Then, the screw rods 601 on the two purlins 5 are operated one by one, and the rotating rod 606 is rotated. The rotating rod 606 drives the screw rod 601 to rotate. Since the threads at both ends of the screw rod 601 are opposite, the screw rod 601 rotates and the threads drive the two slides 602 to slide toward the middle of the purlin 5. The screw rod 601 is continuously rotated so that the two slides 602 are simultaneously pressed against the end of the support rod 701 or the end of the slide rod 702 toward the middle of the purlin 5. At the same time, the block 604 on the slide 602 is engaged with the slot 605 on the support rod 701 or the slide rod 702, so that the support rod 701 and the slide rod 702 are further fixed, thereby making the support rod 701 is more convenient and flexible to install, and the installation saves time and effort, making the installation efficiency of the support rod 701 higher; the support rod 701 is composed of multiple support rods 701 of different lengths freely spliced by bolts, which can be freely overlapped in advance according to the actual width of the foundation pit, so as to facilitate the support of the Larsen steel sheet piles 1 in the foundation pits of different widths; then the hydraulic rod 704 is started, the hydraulic rod 704 extends and drives the sliding rod 702 to slide between the support rod 701, so that the sliding rod 702 and the support rod 701 are respectively pressed against the two rows of Larsen steel sheet piles 1, so that the foundation pit support structure is more stable and firm; the setting of the guide rod 603 has a guiding effect on the slide plate 602, so that the sliding of the slide plate 602 is more stable.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0030] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A water-stop curtain structure for foundation pit protection, comprising two rows of Larsen steel sheet piles (1), characterized in that: The locking ends of the two rows of Larsen steel sheet piles (1) are plugged into each other, and a plurality of H-shaped steels (2) are plugged into one side of the Larsen steel sheet piles (1) in the same row, and the ends of the H-shaped steels (2) are fixedly connected to the water-stop curtain body (3). The other side of the Larsen steel sheet piles (1) in the same row is fixedly connected to a plurality of support blocks (4), and the same purlin (5) is installed on the plurality of support blocks (4). The purlin (5) is installed with a fixing structure (6), and the fixing structure (6) includes a screw rod (601), and the purlin (5) is rotatably connected to the screw rod (601), and the threads at both ends of the screw rod (601) are opposite, and the screw rod (601) is threadedly connected to two slide plates (601). 2), the slide plate (602) is slidably connected to the purlin (5), the two purlins (5) are equipped with the same support structure (7), the support structure (7) includes a support rod (701), the two purlins (5) are equipped with the same support rod (701), one end of the support rod (701) is slidably connected to the slide rod (702), the end of the slide rod (702) and the end of the support rod (701) are respectively plugged into the two purlins (5), the two slide plates (602) on one of the purlins (5) are in contact with the end of the support rod (701), and the two slide plates (602) on the other purlin (5) are in contact with the end of the slide rod (702).

2. A water-stop curtain structure for foundation pit protection according to claim 1, characterized in that: A plurality of guide rods (603) are fixedly connected to the slide plate (602), and the guide rods (603) are slidably connected to the surrounding purlin (5).

3. The water-stop curtain structure for foundation pit protection according to claim 2, characterized in that: The screw rod (601) and the sliding rod (702) are perpendicular to each other, and the cross section of the guide rod (603) is a "T"-shaped structure.

4. The water-stop curtain structure for foundation pit protection according to claim 2, characterized in that: A plurality of clamping blocks (604) are fixedly connected to the slide plate (602), and clamping slots (605) are provided at the ends of the slide rod (702) and the support rod (701), and the clamping blocks (604) are engaged with the corresponding clamping slots (605).

5. The water-stop curtain structure for foundation pit protection according to claim 4, characterized in that: The end of the clamping block (604) is in a trapezoidal structure, and the clamping blocks (604) on two adjacent slides (602) are symmetrically distributed about the middle of the surrounding purlin (5).

6. The water-stop curtain structure for foundation pit protection according to claim 3, characterized in that: The top end of the screw rod (601) is slidably connected to a rotating rod (606), and the cross-sections of both ends of the rotating rod (606) are in a "T"-shaped structure.

7. The water-stop curtain structure for foundation pit protection according to claim 1, characterized in that: A connecting plate (703) is fixedly connected to the sliding rod (702), the connecting plate (703) contacts the surrounding purlin (5), two hydraulic rods (704) are installed on the connecting plate (703), a connecting block (705) is fixedly connected to the supporting rod (701), and the extended end of the hydraulic rod (704) is fixedly connected to the connecting block (705).

8. The water-stop curtain structure for foundation pit protection according to claim 7, characterized in that: The cross section of the sliding rod (702) is a rectangular structure, and the two hydraulic rods (704) are symmetrically distributed.

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