Non-insertion type double-layer steel sheet pile cofferdam guide frame

Abstract

The utility model discloses a non-insertion type double-layer steel sheet pile cofferdam guide frame which comprises a frame body, the frame body is of a bilateral symmetry structure, a single-side frame body comprises an upper longitudinal guide rail and a lower longitudinal guide rail, the starting ends of the longitudinal guide rails are located in the range of a constructed steel sheet pile, and the two longitudinal guide rails, at the same height, of the single-side frame body are connected through a starting end transverse connecting piece. The starting end transverse connecting piece is lifted to the position above the steel sheet pile through the starting end vertical connecting piece, the tail ends of the two longitudinal guide rails, at the same height, of the single-side frame body are directly connected through the terminating end transverse connecting piece, and the vertical guide rails on the outer side of the frame body are connected and fixed through the triangular frame body. The guide rails between the adjacent single-side frame bodies are connected into a whole through inner side guide rail transverse connecting pieces. The guide frame is provided for the non-insertion type double-layer steel sheet pile cofferdam, on-site splicing of the non-insertion type double-layer steel sheet piles is achieved, perpendicularity control is remarkable, the safety coefficient is high, and construction is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a non-insertion type double-layer steel sheet pile cofferdam guide frame. Background Art

[0002] Steel sheet piles are widely used in fields such as foundation pit protection and river cofferdams, and are mainly inserted into the soil and added with support for stable isolation. With the development of cities, the demand for municipal road networks has increased, and tunnels under bridges and other working conditions have gradually emerged. During the construction of such working conditions, when the river needs to be open, the Larsen steel sheet pile half-width cofferdam can only be used for alternating construction. The second-phase cofferdam cannot be inserted into the soil below within the projection range of the first-phase construction tunnel, and can only fall above the tunnel roof. This non-insertion cofferdam system has been successfully applied in some projects, but there is no relevant guidance and temporary stabilization device for the assembly of non-insertion double-layer steel sheet piles. Utility Model Content

[0003] The utility model aims to address the deficiencies in the prior art and provides a non-insertion type double-layer steel sheet pile cofferdam guide frame, comprising a frame body, the frame body being a left-right symmetrical structure, the frame body on one side comprising two upper and lower longitudinal guide rails, a total of 4 longitudinal guide rails, the starting ends of the longitudinal guide rails being located within the range of the constructed steel sheet piles, the two longitudinal guide rails at the same height of the frame body on the one side being connected by a starting end transverse connector, the starting end transverse connector being lifted up to above the steel sheet piles by a starting end vertical connector, the two longitudinal guide rails at the same height of the frame body on the one side being directly connected at the ends by a terminating end transverse connector, the vertical guide rails on the outside of the frame body being connected and fixed by a tripod frame body, the guide rails between adjacent single-sided frames being connected to form a whole by an inner guide rail transverse connector, rollers being arranged at the bottom of the tripod frame body and the inner guide rail transverse connector, and a hook being arranged on the inner guide rail transverse connector.

[0004] Preferably, the starting end transverse connector, the starting end vertical connector, the longitudinal guide rail, the inner guide rail transverse connector, the tripod body and the ending end transverse connector are all made of H-shaped steel, and adjacent structures are fixed by welding.

[0005] Preferably, the hook is provided at one place on the inner guide rail transverse connecting member and is welded to the inner guide rail transverse connecting member.

[0006] Preferably, the tripod is provided at four locations on both sides and both ends of the frame, including an inclined support and a bottom support, a reinforcing vertical support is provided between the inclined support and the bottom support, and a lateral distance adjustment member is provided at the end of the inclined support.

[0007] Preferably, two rollers are provided on each tripod body and one roller is provided on the inner guide rail transverse connecting member, for a total of nine rollers, and the rollers are provided with matching locking devices.

[0008] Compared with the prior art, the utility model has the following beneficial effects: the utility model uses H-shaped steel as the main material, and the components are welded to form a frame unit. Rollers are arranged at the bottom of the frame to facilitate the movement of the frame. The frame unit is a bilaterally symmetrical structure, and two guide rails are arranged horizontally and vertically respectively for guiding and temporarily stabilizing the double-layer steel sheet piles. The utility model provides a guide frame for the non-insertion double-layer steel sheet pile cofferdam, realizes the on-site assembly of the non-insertion double-layer steel sheet piles, and has significant verticality control, high safety factor, and convenient construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0010] Figure 1 It is the cross-sectional view of the starting end of the guide frame;

[0011] Figure 2 It is the cross-sectional view of the termination end of the guide frame;

[0012] Figure 3 It is the plan view of the guide frame;

[0013] Figure 4 This is the elevation view of the guide frame.

[0014] In the figure: 1. Horizontal connector at the starting end; 2. Vertical connector at the starting end; 3. Longitudinal guide rail; 4. Horizontal connector of the inner guide rail; 5. Horizontal distance adjustment piece; 6. Inclined support; 7. Reinforced vertical support; 8. Bottom support; 9. Roller; 10. Locking device; 11. Horizontal connector at the ending end; 12. Hook; 13. Larsen steel sheet pile; 14. Corbel; 15. Horizontal pull rod; 16. Guide beam; 17. Limiting steel bar; 18. Welded steel plate. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is described in detail below with reference to the accompanying drawings, but the protection scope of the utility model is not limited to the embodiments.

[0016] Reference Figures 1 to 4The utility model discloses a non-insertion type double-layer steel sheet pile cofferdam guide frame, including a frame body, the frame body is a left-right symmetrical structure, which realizes the guidance and temporary stability of the double-layer steel sheet piles, and the frame body on one side includes two upper and lower longitudinal guide rails 3, a total of 4, the starting end of the longitudinal guide rail 3 is located in the range of the constructed steel sheet piles, and the two longitudinal guide rails at the same height of the frame body on the one side are connected by a starting end transverse connector 1, and the starting end transverse connector 1 is lifted to the top of the steel sheet piles through the starting end vertical connector 2, so as to ensure that the starting end can move unimpeded in the range of the constructed steel sheet piles, and the starting end transverse connector is higher than the Larsen steel The sheet piles 13 are pushed a certain distance to avoid movement conflicts caused by length processing errors of the Larsen steel sheet piles 13. The termination end is located outside the construction range of the steel sheet piles. The two longitudinal guide rails of the same height of the single-sided frame are directly connected at the end through the termination end transverse connector 11. The vertical guide rails on the outside of the frame are connected and fixed through the tripod body. The guide rails between adjacent single-sided frames are connected to form a whole by the inner guide rail transverse connector 4. Rollers 9 are arranged at the bottom of the tripod body and the inner guide rail transverse connector 4 for frame movement, and hooks 12 are arranged on the inner guide rail transverse connector 4 for towing the guide frame to move.

[0017] In the utility model, the starting end transverse connector 1, the starting end vertical connector 2, the longitudinal guide rail, the inner guide rail transverse connector 4, the tripod body and the terminal end transverse connector 11 are all made of H-shaped steel, and the adjacent structures are fixed by welding. The hook 12 is set at one location on the inner guide rail transverse connector 4, and is welded to the inner guide rail transverse connector 4, and is used for guiding the frame to pull and move. The tripod is set at a total of 4 locations on both sides and both ends of the frame, including an inclined support 6 and a bottom support 8. A reinforcing vertical support 7 is set between the inclined support 6 and the bottom support 8. A transverse distance adjustment member 5 is set at the end of the inclined support 6 to ensure that the inclined support does not conflict with the corbel 14 and the guide beam 16 of the cofferdam system. The roller is set at 2 locations on each tripod body and 1 location on the inner guide rail transverse connector 4, for a total of 9 rollers. The roller is provided with a matching locking device 10 to ensure the stability of the static state.

[0018] When the utility model is implemented, the guide frame is manufactured off-site. It should be noted that the lateral spacing between the guide rails should match the actual size of the steel sheet piles on site to ensure smooth driving of the steel sheet piles and control of the verticality. After the production is completed, it is hoisted to the top of the tunnel for assembly of the Larsen steel sheet piles. During construction, first rely on the inserted steel sheet piles on the outside of the tunnel to drive 1-2 non-inserted steel sheet piles, then align the guide frame and move it into the driven non-inserted steel sheet piles, and after confirming that the plane position of the guide frame is correct, lock the rollers and drive the steel sheet piles in the guide frame. After the driving of the steel sheet piles in the guide frame is completed, immediately install the double-layer steel sheet pile cofferdam's corbels, transverse tie rods 15, guide beams, transverse tie rod 15 end limit steel bars 17 and root welded steel plates 18 in sequence to complete the system conversion of the double-layer steel sheet piles temporarily stabilized by the guide frame to self-stabilized. After the system conversion is completed, unlock the locking device of the rollers, and move forward by the driving and pulling machine through the wire rope and the hook of the guide frame. When moving, ensure that the starting end transverse connector is completely within the range of the driven steel sheet piles to ensure the smooth connection of the subsequent steel sheet piles. After moving into place, lock the rollers, and drive the steel sheet piles in the guide frame and convert the stabilization system of the double-layer steel sheet piles according to the above instructions. The steel sheet pile driving, stabilization system conversion and movement are carried out in a cycle in sequence, thereby realizing the on-site assembly of the non-insertion type double-layer steel sheet pile cofferdam, with significant verticality control, high safety factor and convenient construction.

[0019] As above, although the utility model has been shown and described with reference to a specific preferred embodiment, it should not be interpreted as limiting the utility model itself. Various changes can be made to it in form and detail without departing from the spirit and scope of the utility model defined in the attached claims.

Claims

1. A non-insertion type double-layer steel sheet pile cofferdam guide frame, characterized in that: It includes a frame, which is a bilaterally symmetrical structure. The frame on one side includes two upper and lower longitudinal guide rails, a total of 4 longitudinal guide rails. The starting ends of the longitudinal guide rails are located within the range of constructed steel sheet piles. The two longitudinal guide rails at the same height of the frame on one side are connected by a starting end transverse connector, and the starting end transverse connector is lifted above the steel sheet piles through a starting end vertical connector. The two longitudinal guide rails at the same height of the frame on one side are directly connected at the ends by a terminating end transverse connector, and the vertical guide rails on the outside of the frame are connected and fixed by a tripod body. The guide rails between adjacent single-sided frames are connected to form a whole by an inner guide rail transverse connector, and rollers are arranged at the bottom of the tripod body and the inner guide rail transverse connector, and a hook is arranged on the inner guide rail transverse connector.

2. According to claim 1, a non-insertion type double-layer steel sheet pile cofferdam guide frame is characterized in that: The starting end transverse connector, the starting end vertical connector, the longitudinal guide rail, the inner guide rail transverse connector, the tripod body and the ending end transverse connector are all made of H-shaped steel, and adjacent structures are fixed by welding.

3. A non-insertion type double-layer steel sheet pile cofferdam guide frame according to claim 2, characterized in that: The hook is provided at one place on the inner guide rail transverse connecting piece and is welded to the inner guide rail transverse connecting piece.

4. A non-insertion type double-layer steel sheet pile cofferdam guide frame according to claim 3, characterized in that: The tripod is provided with 4 parts in total on both sides and both ends of the frame, including an inclined support and a bottom support. A reinforcing vertical support is provided between the inclined support and the bottom support. A lateral distance adjusting piece is provided at the end of the inclined support.

5. The non-insertion type double-layer steel sheet pile cofferdam guide frame according to claim 4 is characterized in that: The rollers are arranged at two locations on each tripod body and one location on the inner guide rail transverse connecting piece, for a total of nine rollers, and the rollers are provided with matching locking devices.

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