Anti-falling structure for steel support of larssen steel sheet pile

Abstract

The utility model relates to the field of foundation pit support construction discloses a kind of anti-falling structure for steel support of Larsen steel sheet pile, the steel support is cylindrical, and flange is equipped at end head, and it include: steel plate bracket, one end is fixed in Larsen steel sheet pile outer facade;The steel support is placed on the upper surface of steel plate bracket by flange horizontally;Steel encloses purlin, including two vertical boards and cross bracing, the cross bracing both ends are respectively fixedly connected with two vertical boards, and two vertical boards are respectively abutted tightly with Larsen steel sheet pile outer facade and flange;Cable-stayed piece, one end is connected to lifting hook, the other end is connected to angle hook, and the angle hook is fixed on the upper portion of Larsen steel sheet pile outer facade.The utility model is by steel plate bracket as support plate to load vertical stress of steel support, as first heavy support protection, with cable-stayed piece connecting the lifting hook of steel support top and the angle hook of Larsen steel pipe pile top, to transfer the lateral hand of steel support, as second heavy support protection, to effectively reinforce steel support.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit support construction, specifically to an anti-fall-off structure for steel supports used in Larssen sheet piles. Background Technology

[0002] In the construction of Larssen sheet pile support, steel supports, as an important component of the foundation pit support structure, bear the responsibility of supporting the pit wall and stabilizing the soil. Traditional steel supports typically rely on single fasteners or connectors for fixation, which is a relatively simple fixing method and is easily affected by complex external working conditions (such as long-term vibration, pressure changes, etc.), leading to loosening or failure and thus posing a risk of steel support detachment. Some projects use anchors or reinforcing ribs to reinforce the steel supports, but this is cumbersome to construct and the results are not ideal.

[0003] To address this issue, a non-detachment structure for steel supports used in Larssen sheet piles is proposed to solve the aforementioned technical problems. Utility Model Content

[0004] This invention provides an anti-detachment structure for steel supports of Larssen sheet piles, which solves the problem that the existing fixing methods for Larssen sheet pile steel supports are singular and easily affected by complex external working conditions, leading to loosening or failure.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A non-detachment structure for a steel support used for Larssen sheet piles, the steel support being cylindrical with flanges at both ends, comprising:

[0007] The steel gusset plate bracket has a horizontal upper surface and is fixed at one end to the exterior of the Larssen sheet pile; the steel support is placed horizontally on the upper surface of the steel gusset plate bracket via a flange, and the top of the steel support is equipped with a hook;

[0008] The steel waler includes two vertical and parallel upright plates, and a horizontal bracing plate disposed between the two upright plates. The two ends of the horizontal bracing plate are fixedly connected to the two upright plates respectively, and the two upright plates are respectively abutted against the outer facade and flange of the Larssen steel sheet pile.

[0009] The diagonal tie rod is connected at one end to a hook and at the other end to a corner hook, which is fixed to the upper part of the outer facade of the Larsen sheet pile.

[0010] Specifically, the inclined tie member includes:

[0011] A threaded adjusting rod, including a hollow outer sleeve with internal threads;

[0012] It also includes a first pull ring and a second pull ring with threaded connecting rods. The first pull ring and the second pull ring are screwed into the two ends of the outer sleeve through the threaded connecting rods. The first pull ring is connected to the hook through the first S-hook, and the second pull ring is connected to the angle hook through the second S-hook.

[0013] Specifically, the cross-sectional shape of the steel gusset bracket is a right-angled trapezoid with a horizontal upper surface, an inclined lower surface, and vertical ends.

[0014] Specifically, the cross brace is a U-shaped plate or an I-shaped plate, and the vertical plates at both ends of the cross brace are fixedly connected to the facing surfaces of the two vertical plates respectively.

[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0016] In this invention, a steel gusset bracket is fixed to the Larssen sheet pile to support the steel support and steel waler. The upper part of the Larssen sheet pile serves as the installation position for the angle hook, thereby achieving triangular support of the hook, steel gusset bracket, and steel support. The steel gusset bracket acts as a support plate to bear the vertical force of the steel support, serving as the first layer of support protection. The hook at the top of the steel support and the angle hook at the top of the Larssen sheet pile are connected by diagonal tie rods to transfer the lateral force of the steel support. The load is transferred through the vertical plate and horizontal brace, serving as the second layer of support protection. This double support protection effectively increases the stress area, distributes the load per unit area, reduces the pressure on the exterior of the Larssen sheet pile, and prevents damage to the Larssen sheet pile. This effectively strengthens the steel support, significantly reduces the possibility of the steel support falling off, and thus ensures the overall strength of the Larssen sheet pile. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the side structure of this utility model.

[0018] The meanings of the labels in the diagram are as follows:

[0019] Steel gusset bracket—1; Larssen sheet pile—2; Steel support—3; Flange—4; Lifting hook—5; Steel waler—6; Vertical plate—7; Horizontal brace—8; Angle hook—9; Outer sleeve—10; First pull ring—11; Second pull ring—12; First S-hook—13; Second S-hook—14. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, so as to provide a better understanding of the concept of the present utility model, the technical problem solved, the technical features constituting the technical solution and the technical effects brought about.

[0021] like Figure 1As shown, an anti-detachment structure for a steel support used for Larssen sheet piles is disclosed. The steel support 3 is cylindrical and has a flange 4 at one end. The structure includes:

[0022] The steel gusset bracket 1 has a horizontal upper surface and is fixed at one end to the outer facade of the Larssen sheet pile 2; the steel support 3 is placed horizontally on the upper surface of the steel gusset bracket 1 through the flange 4, and the top of the steel support 3 is provided with a hook 5;

[0023] The steel waler 6 includes two vertical and parallel upright plates 7, and a horizontal bracing plate 8 disposed between the two upright plates 7. The two ends of the horizontal bracing plate 8 are fixedly connected to the two upright plates 7 respectively, and the two upright plates 7 are respectively abutted against the outer facade of the Larssen steel sheet pile 2 and the flange 4.

[0024] The diagonal tie is connected at one end to the hook 5 and at the other end to the angle hook 9, which is fixed to the upper part of the outer facade of the Larsen sheet pile 2.

[0025] In this utility model, the steel gusset bracket 1 serves as the placement position for the steel support 3, mainly playing the role of bearing its vertical force. Specifically, the steel gusset bracket 1 is a platform welded and fixed to the outer surface of the Larssen steel sheet pile 2, with its upper surface set horizontally to place the steel support 3 and the steel waler 6. The steel support 3 is cylindrical, with both ends mounted on steel brackets 1 on the vertical surfaces of the Larssen sheet piles 2 inside the foundation pit. Specifically, it bears and transmits its own weight through flanges 4. The steel waler 6 is mainly used to support the flanges 4 and the outer surface of the Larssen sheet piles 2, transmitting the lateral load on the steel support 3. Specifically, when the lateral force on the steel support 3 changes due to external vibration or pressure variations, the waler 6 transmits the lateral force to the Larssen sheet piles 2. Specifically, the force passes sequentially through the steel support 3, one vertical plate 7, one horizontal brace 8, and another vertical plate 7 before being transmitted to the Larssen sheet piles 2, thus completing the lateral load transfer process. Simultaneously, the load transfer through the vertical plates 7 and horizontal braces 8 effectively increases the bearing area, distributes the load per unit area, reduces the pressure on the Larssen sheet piles 2, and prevents damage to the Larssen sheet piles 2. The main function of the diagonal bracing is to work with the steel gusset bracket 1 to transfer the vertical force received by the steel support 3. When the steel support 3 is normally placed on the steel gusset bracket 1, it bears the longitudinal load and its own weight. By connecting the hook 5 and the corner hook 9 through the diagonal bracing, part of the downward longitudinal load, its own weight, and part of the lateral load can be transferred to the Larssen steel sheet pile 2 through the hook 5, the diagonal bracing, and the corner hook 9. Thus, it works with the steel gusset bracket 1 to fix the steel support 3 and prevent it from falling off.

[0026] In a preferred embodiment, the diagonal brace includes:

[0027] A threaded adjusting rod, including a hollow outer sleeve 10 with internal threads;

[0028] It also includes a first pull ring 11 and a second pull ring 12 with threaded connecting rods. The first pull ring 11 and the second pull ring 12 are respectively screwed into the two ends of the outer sleeve 10 through the threaded connecting rods. The first pull ring 11 is connected to the hook 5 through the first S-hook 13, and the second pull ring 12 is connected to the angle hook 9 through the second S-hook 14.

[0029] This embodiment provides a specific inclined tie structure, wherein the threaded adjusting rod includes a hollow outer sleeve 10 with internal threads, and a first pull ring 11 and a second pull ring 12 with threaded connecting rods. The threaded connecting rods of the first pull ring 11 and the second pull ring 12 are screwed into the outer sleeve from both ends of the outer sleeve 10, so that the overall length of the threaded adjusting rod can be changed by rotating the first pull ring 11 and the second pull ring 12. This allows for maintaining a certain tension by adjusting the extension and retraction of the threaded adjusting rod when the steel support 3 is normally placed on the steel gusset bracket 1, so that it can share the force and transmit force with the steel gusset bracket 1.

[0030] In a preferred embodiment, the cross-sectional shape of the steel gusset bracket 1 is a right trapezoid with a horizontal upper surface, an inclined lower surface, and vertical ends.

[0031] In this embodiment, by setting the steel gusset bracket 1 as a right trapezoid, the overall bending strength of the steel gusset bracket 1 can be effectively increased. Its inclined surface plays a supporting role, avoiding excessive vertical force that could cause bending deformation at the end of the steel gusset bracket 1.

[0032] In a preferred embodiment, the cross brace 8 is a U-shaped plate or an I-shaped plate, and the vertical plates at both ends of the cross brace are fixedly connected to the facing surfaces of the two vertical plates respectively.

[0033] In this embodiment, the cross brace 8 is a U-shaped plate or an I-shaped plate. The flanges at both ends of the U-shaped plate or the flanges at both ends of the I-shaped plate serve as vertical plates, thereby increasing the bending strength of the cross brace 8 and preventing deformation of the cross brace 8 during load transfer.

[0034] The terms "connection" and "fixing" appearing in this utility model description can refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meaning of the above terms in this utility model should be understood according to the specific circumstances.

[0035] In the description of this utility model, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., are used only to indicate the orientation or positional relationship for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A structure for preventing the steel support from falling off Larssen sheet piles, wherein the steel support (3) is cylindrical and has a flange (4) at one end, characterized in that, include: The steel gusset bracket (1) has a horizontal upper surface and one end is fixed to the exterior of the Larssen sheet pile (2); the steel support (3) is placed horizontally on the upper surface of the steel gusset bracket (1) through the flange (4), and the top of the steel support (3) is provided with a hook (5). The steel waler (6) includes two vertical and parallel upright plates (7) and a horizontal bracing plate (8) between the two upright plates (7). The two ends of the horizontal bracing plate (8) are fixedly connected to the two upright plates (7) respectively, and the two upright plates (7) are respectively abutted against the outer facade of the Larssen sheet pile (2) and the flange (4). The diagonal tie is connected at one end to the hook (5) and at the other end to the angle hook (9), which is fixed to the upper part of the exterior of the Larsen sheet pile (2).

2. The anti-detachment structure for steel supports of Larssen sheet piles as described in claim 1, characterized in that, The inclined tie member includes: A threaded adjusting rod, including a hollow outer sleeve (10) with internal threads; It also includes a first pull ring (11) and a second pull ring (12) with threaded connecting rods. The first pull ring (11) and the second pull ring (12) are screwed into the two ends of the outer sleeve (10) through the threaded connecting rods. The first pull ring (11) is connected to the hook (5) through the first S-hook (13), and the second pull ring (12) is connected to the angle hook (9) through the second S-hook (14).

3. The anti-detachment structure for steel supports of Larssen sheet piles as described in claim 1, characterized in that, The cross-sectional shape of the steel gusset bracket (1) is a right trapezoid with a horizontal upper surface, an inclined lower surface, and vertical ends.

4. The anti-detachment structure for steel supports of Larssen sheet piles as described in claim 1, characterized in that, The horizontal support plate (8) is a U-shaped plate or an I-shaped plate, and the vertical plates at both ends of the horizontal support plate (8) are fixedly connected to the opposing surfaces of the two vertical plates (7).

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