Joint device of underground diaphragm wall
By adopting a combined structure of a box, a water stop and an anti-sinking piece in a soft underground continuous wall joint device in soft soil areas, the box sinks to the bottom of the trench and the anti-sinking piece contacts the guide wall to limit the downward movement of the box. The water stop contacts the guide wall to limit the sinking of the box. The anti-sinking piece contacts the guide wall with the joint device to limit the sinking of the box. The water stop contacts the guide wall to limit the downward movement of the box, thereby limiting the downward movement of the box. The water stop can contact the underground continuous wall sections, thereby achieving a waterproof effect at the joint of the underground continuous wall.
Patent Information
- Application Number
- CN202422709720.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-07
AI Technical Summary
In soft soil areas, existing underground continuous wall joint devices are prone to sinking under their own weight, causing the rubber waterstop to sink, leading to groundwater infiltration, affecting structural stability and waterproofing effects.
A combined structure of a box, waterstops and anti-sinking parts is adopted. After the box sinks to the bottom of the trench, the anti-sinking parts come into contact with the top surface of the guide wall to limit the box's sinking. The waterstops come into contact with the continuous wall section to prevent groundwater from seeping in.
It effectively prevents the box from sinking, ensures the strength and waterproof effect of the underground continuous wall section connection, and improves the stability and waterproof performance of the underground structure.
Smart Images
Figure CN223398124U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of underground continuous wall construction, in particular to a joint device for an underground continuous wall. Background Art
[0002] Diaphragm walls are a structural form with high strength, high stability, and excellent water-blocking properties. In underground projects, they primarily serve as the enclosure structure for underground buildings, effectively isolating them from the surrounding soil and preventing groundwater or other water sources from seeping into the underground structures. To ensure the tightness and stability of the connection between adjacent diaphragm wall sections, conventional techniques involve installing joint boxes between them during diaphragm wall construction. Rubber waterstops are installed at the joints between the joint boxes and the diaphragm wall to prevent groundwater infiltration and maintain the strength and stability of the overall diaphragm wall structure.
[0003] In areas with relatively soft soil, the soil cannot effectively support the joint box. The joint box will sink under its own weight and drive the rubber waterstop to sink, so that there is no rubber waterstop between the joint box and the underground continuous wall section. Groundwater can seep into the area where the rubber waterstop is not installed, causing the underground continuous wall to deform and affecting the overall stability of the underground retaining structure. Groundwater will also erode the underground structure, making the underground structure prone to safety problems.
[0004] Therefore, there is an urgent need for a joint device for underground continuous walls to solve the above problems. Utility Model Content
[0005] In view of the shortcomings of the existing technology, the purpose of the utility model is to provide a joint device for underground continuous walls, in which the box body will not sink under the action of gravity, and the waterproof effect of the underground continuous wall joints is ensured while ensuring the connection strength of the underground continuous wall sections.
[0006] To achieve this purpose, the present invention adopts the following technical solutions:
[0007] Provided is a joint device for an underground continuous wall, which is used to connect two adjacent underground continuous wall sections during construction. The underground continuous wall sections are constructed in a foundation trench, and a guide wall is cast on the top of the foundation trench. The joint device for the underground continuous wall includes:
[0008] The box body can be sunk to the bottom of the base trench;
[0009] A water stop is provided on the box body, and a portion of the water stop protrudes from the outer surface of the box body. When the box body sinks to the bottom of the foundation trench, the portion of the water stop protruding from the box body can contact the underground continuous wall section to prevent groundwater from entering between the box body and the underground continuous wall section.
[0010] The anti-sinking piece is detachably connected to the box body. When the box body sinks to the bottom of the base trench, the anti-sinking piece is located outside the base trench and contacts the top surface of the guide wall.
[0011] Optionally, two anti-sinking members are provided, and guide walls are provided on both sides of the foundation trench along the thickness direction of the underground continuous wall section, and the two anti-sinking members correspond one to one to the two guide walls.
[0012] Optionally, a protrusion is provided on the box body, and a connecting groove is provided on the anti-sinking piece, and the protrusion can be snapped into the connecting groove.
[0013] Optionally, the joint device of the underground continuous wall further includes a connecting piece, which extends along the width direction of the connecting groove. When the protrusion is embedded in the connecting groove, the connecting piece can pass through the anti-sinking piece and the protrusion.
[0014] Optionally, two first connecting holes are provided on the anti-sinking piece, and the two first connecting holes are respectively located on both sides of the connecting groove along its width direction. One end of the first connecting hole is connected to the connecting groove, and the other end is connected to the outside of the anti-sinking piece. A second connecting hole is provided on the raised portion and passes through the width direction of the connecting groove. The connecting piece passes through the two first connecting holes and the second connecting hole.
[0015] Optionally, detachable limiting members are provided at both ends of the connecting member, and the limiting members are used to limit the movement of the connecting member.
[0016] Optionally, the connecting member includes a screw portion, a threaded hole is provided on the limiting member, and the screw portion is threadedly engaged with the threaded hole of the limiting member.
[0017] Optionally, a hand piece is provided on the anti-sinking piece, which is configured to drive the anti-sinking piece to move.
[0018] Optionally, the box body is provided with a mounting groove extending along its extension direction, and the water stop member is clamped in the mounting groove.
[0019] Optionally, the box body and the anti-sinking member are both made of steel.
[0020] Compared with the prior art, the beneficial effects of the present invention are:
[0021] The utility model provides a joint device for an underground continuous wall. After the box body sinks to the bottom of the foundation trench, if the bottom of the trench cannot effectively support the box body, the box body will tend to move downward under the action of its own weight. However, the anti-sinking member contacts the top surface of the guide wall, that is, the guide wall can limit the downward movement of the anti-sinking member, and thus also limits the downward movement of the box body, so that the water stop member will not move and can always be in contact with the underground continuous wall section. The portion of the water stop member protruding from the box body can be in contact with the underground continuous wall section, so that groundwater cannot penetrate between the box body and the underground continuous wall section, thereby ensuring the connection strength of the underground continuous wall section while also ensuring the waterproof effect of the underground continuous wall joint. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 A schematic diagram of a joint device for an underground continuous wall provided by the present invention;
[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0024] Figure 3 A schematic structural diagram of an anti-sinking component of a joint device for an underground continuous wall provided by the present invention;
[0025] Figure 4 A top view of the anti-sinking component of the joint device of the underground continuous wall provided by the utility model.
[0026] in:
[0027] 100. Guide wall;
[0028] 1. Box body; 11. Installation slot;
[0029] 2. Water stop parts;
[0030] 3. Anti-sinking member; 31. Connecting groove; 32. First connecting hole;
[0031] 4. Connectors;
[0032] 5. Handpiece. DETAILED DESCRIPTION
[0033] It should be understood that, in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0034] It should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0035] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.
[0036] like Figures 1 to 4 As shown, this embodiment provides a joint device for an underground continuous wall. The box body 1 will not sink under the action of gravity, and while ensuring the connection strength of the underground continuous wall segments, it also ensures the waterproof effect at the underground continuous wall joints.
[0037] See Figure 1 and Figure 2 The joint device of the underground continuous wall is used to connect two adjacent underground continuous wall sections during construction. The underground continuous wall sections are constructed in the foundation trench, and a guide wall 100 is cast on the top of the foundation trench. The joint device of the underground continuous wall includes a box body 1, a water stop 2 and an anti-sinking member 3. The box body 1 can sink to the bottom of the foundation trench; the water stop 2 is provided on the box body 1, and the water stop 2 partially protrudes from the outer surface of the box body 1. When the box body 1 sinks to the bottom of the foundation trench, the part of the water stop 2 protruding from the box body 1 can contact the underground continuous wall section to prevent groundwater from entering between the box body 1 and the underground continuous wall section; the anti-sinking member 3 is detachably connected to the box body 1. When the box body 1 sinks to the bottom of the foundation trench, the anti-sinking member 3 is located outside the foundation trench and contacts the top surface of the guide wall 100.
[0038] In the joint device for the underground continuous wall provided in this embodiment, after the box body 1 sinks to the bottom of the foundation trench, if the bottom of the trench cannot effectively support the box body 1, the box body 1 will tend to move downward under the action of its own gravity. However, the anti-sinking member 3 contacts the top surface of the guide wall 100, that is, the guide wall 100 can limit the downward movement of the anti-sinking member 3, and thus also limit the downward movement of the box body 1, so that the water stop member 2 will not move and can always be in contact with the underground continuous wall segment. The portion of the water stop member 2 protruding from the box body 1 can be in contact with the underground continuous wall segment, so that groundwater cannot penetrate between the box body 1 and the underground continuous wall segment, ensuring the connection strength of the underground continuous wall segment while also ensuring the waterproof effect at the underground continuous wall joint.
[0039] In this embodiment, both the housing 1 and the anti-sinking member 3 are made of steel, which provides high strength and resists deformation. The housing 1 can be welded to the reinforcement cage of the underground diaphragm wall, thereby ensuring the connection strength between adjacent underground diaphragm wall sections. The anti-sinking member 3 is a rectangular parallelepiped 250 mm long, 100 mm wide, and 50 mm thick, welded from multiple steel plates. Its symmetrical structure makes it resistant to damage. The waterstop 2 is made of rubber, using a rubber waterstop strip.
[0040] Optionally, see Figure 1 , there are two anti-sinking pieces 3, the foundation trench is along the thickness direction of the underground continuous wall section ( Figure 1Guide walls 100 are provided on both sides of the box body 1 (in the X direction), and the two anti-sinking members 3 correspond one-to-one to the two guide walls 100. In this way, the anti-sinking members 3 can be symmetrically arranged on both sides of the box body 1 along the thickness direction of the underground continuous wall section, so that both sides of the box body 1 can be evenly stressed, ensuring the stability of the box body 1.
[0041] Optionally, see Figure 1 and Figure 3 The box body 1 is provided with a protrusion, and the anti-sinking member 3 is provided with a connecting groove 31, into which the protrusion can be snapped. The snapping of the protrusion into the connecting groove 31 not only realizes the connection between the anti-sinking member 3 and the box body 1, but also enables the groove wall of the connecting groove 31 to limit the rotation of the protrusion, thereby limiting the rotation of the box body 1 relative to the foundation groove, thereby preventing the box body 1 from affecting the connection of the underground continuous wall section.
[0042] Specifically, see Figure 1 and Figure 4 The arrangement of the connecting groove 31 makes the connection end between the anti-sinking member 3 and the box body 1 have a U-shaped structure, and the protrusion is clearance-matched with the groove wall of the connecting groove 31, so that the protrusion can be embedded in the connecting groove 31. Exemplarily, the clearance between the groove wall of the connecting groove 31 and the protrusion is in the range of 1 mm to 10 mm.
[0043] Optionally, see Figure 1 and Figure 4 The underground diaphragm wall joint device also includes a connector 4, which extends along the width of the connection groove 31. When the protrusion is embedded in the connection groove 31, the connector 4 can pass through the connection groove 31 and the protrusion. The protrusion is embedded in the connection groove 31, and the connector 4 passes through the connection groove 31 and the protrusion, thereby connecting the anti-sinking member 3 to the box body 1. When the connector 4 is disengaged from the connection groove 31 and the protrusion, the anti-sinking member 3 is separated from the box body 1.
[0044] In this embodiment, refer to Figure 3 , two first connection holes 32 are provided on the anti-sinking member 3, and the two first connection holes 32 are respectively located at the connection groove 31 along its width ( Figure 3 On both sides of the Y direction in the direction, one end of the first connecting hole 32 is connected to the connecting groove 31, and the other end is connected to the outside of the anti-sinking member 3. A second connecting hole is provided on the raised portion along the width direction of the connecting groove 31. The connecting member 4 passes through the two first connecting holes 32 and the second connecting hole to connect the anti-sinking member 3 and the box body 1.
[0045] Exemplarily, the first connecting hole 32 and the second connecting hole are circular holes with a diameter of 20 mm, and the connecting member 4 is a round rod made of steel.
[0046] Optionally, both ends of the connecting member 4 are provided with detachable limiting members, which are used to limit the movement of the connecting member 4 and prevent the connecting member 4 from being separated from the anti-sinking member 3 and the protrusion.
[0047] Specifically, the connector 4 includes a screw portion, and the stopper is provided with a threaded hole. The screw portion and the threaded hole of the stopper are threadedly engaged. After the connector 4 passes through the first connection hole 32 and the second connection hole, the stopper is connected to the screw portion of the connector 4. The stopper can abut against the outer surface of the anti-sinking member 3 to prevent the connector 4 from separating from the anti-sinking member 3.
[0048] Exemplarily, the limiting member is a nut.
[0049] Optionally, see Figure 3 The anti-sinking piece 3 is provided with a hand piece 5, which is configured to drive the anti-sinking piece 3 to move, making it convenient for the staff to lift and place the anti-sinking piece 3.
[0050] For example, see Figure 3 The hand piece 5 is a U-shaped handle made of steel, and the hand piece 5 is welded to the anti-sinking piece 3.
[0051] Optionally, see Figure 1 The box body 1 is provided with a mounting groove 11 extending along its extension direction, and the water stop member 2 is clamped in the mounting groove 11 to realize the installation of the water stop member 2 on the box body 1.
[0052] The above description is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present invention fall within the protection scope and disclosure scope of the present invention.
Claims
1. A joint device for an underground continuous wall, used for connecting two adjacent underground continuous wall sections during construction, wherein the underground continuous wall sections are constructed in a foundation trench, and a guide wall (100) is cast on the top of the foundation trench, characterized in that: The joint device of the underground continuous wall includes: The box body (1) is capable of sinking to the bottom of the base trench; A water stop member (2) is provided on the box body (1), and a portion of the water stop member (2) protrudes from the outer surface of the box body (1). When the box body (1) sinks to the bottom of the foundation trench, the portion of the water stop member (2) protruding from the box body (1) can contact the underground continuous wall section to prevent groundwater from entering between the box body (1) and the underground continuous wall section. The anti-sinking member (3) is detachably connected to the box body (1); when the box body (1) sinks to the bottom of the base groove, the anti-sinking member (3) is located outside the base groove and contacts the top surface of the guide wall (100).
2. The underground continuous wall joint device according to claim 1, characterized in that: Two anti-sinking members (3) are provided, and guide walls (100) are provided on both sides of the foundation trench along the thickness direction of the underground continuous wall section, and the two anti-sinking members (3) correspond to the two guide walls (100) in a one-to-one manner.
3. The joint device of underground continuous wall according to claim 1, characterized in that: The box body (1) is provided with a raised portion, the anti-sinking piece (3) is provided with a connecting groove (31), and the raised portion can be snapped into the connecting groove (31).
4. The underground continuous wall joint device according to claim 3, characterized in that: The underground continuous wall joint device further comprises a connecting piece (4), wherein the connecting piece (4) extends along the width direction of the connecting groove (31), and when the protrusion is embedded in the connecting groove (31), the connecting piece (4) can pass through the connecting groove (31) and the protrusion.
5. The underground continuous wall joint device according to claim 4, characterized in that: The anti-sinking member (3) is provided with two first connecting holes (32), and the two first connecting holes (32) are respectively located on both sides of the connecting groove (31) along its width direction. One end of the first connecting hole (32) is connected to the connecting groove (31), and the other end is connected to the outside of the anti-sinking member (3). The raised portion is provided with a second connecting hole that passes through the width direction of the connecting groove (31). The connecting member (4) passes through the two first connecting holes (32) and the second connecting hole.
6. The underground continuous wall joint device according to claim 4, characterized in that: Both ends of the connecting member (4) are provided with detachable limiting members, and the limiting members are used to limit the movement of the connecting member (4).
7. The underground continuous wall joint device according to claim 6, characterized in that: The connecting member (4) comprises a screw portion, a threaded hole is provided on the limiting member, and the screw portion is threadedly matched with the threaded hole of the limiting member.
8. The underground continuous wall joint device according to any one of claims 1 to 7, characterized in that: The anti-sinking piece (3) is provided with a hand piece (5) configured to drive the anti-sinking piece (3) to move.
9. The underground continuous wall joint device according to any one of claims 1 to 7, characterized in that: The box body (1) is provided with a mounting groove (11) extending along its extension direction, and the water stop member (2) is clamped in the mounting groove (11).
10. The underground continuous wall joint device according to any one of claims 1 to 7, characterized in that: The box body (1) and the anti-sinking member (3) are both made of steel.