A device for supporting a purlin of a larssen steel sheet pile

Abstract

The utility model discloses a kind of Larsen steel sheet pile purlin support devices, including Larsen steel sheet pile, be hung on the plate of being arranged on the Larsen steel sheet pile, be arranged on the horizontal section bar and steel support of the plate;The top of the plate is equipped with inverted U-shaped folding plate, hangs in the top of Larsen steel sheet pile, support seat is equipped on the plate, and the support seat includes horizontal plate and reinforcing plate, and the horizontal section bar is arranged on support seat, and support seat provides vertical support for horizontal section bar;The bottom of the plate is opened with adjusting groove, adjusting assembly is equipped in the adjusting groove, and the adjusting assembly is supported between the plate and Larsen steel sheet pile;The end of the steel support is fixed on horizontal section bar, and the horizontal section bar at both ends is supported. Avoid horizontal section bar welding fixed on Larsen steel sheet pile, protect the structure of Larsen steel sheet pile not being destroyed by high temperature when welding and welding point, and avoid using bolt to connect the both, prevent the structure at connecting point from being unstable caused by bolt connection.

Description

Technical Field

[0001] The embodiments of this utility model belong to the field of construction support technology, and more specifically, relate to a Larssen sheet pile waler support device. Background Technology

[0002] Larssen sheet piles are hot-rolled steel sections with interlocking edges. In foundation pit, cofferdam, or wharf engineering, multiple sheet piles are interlocked and driven into the ground using a vibratory hammer or static pile driver to form a continuous, high-strength steel retaining wall for soil retention and water stoppage. Due to its advantages such as convenient construction, good water-stopping performance, and reusability, the Larssen sheet pile support system has become one of the most mainstream support methods in urban deep foundation pit engineering.

[0003] During the excavation of the foundation pit, to prevent excessive deformation or instability of the sheet pile retaining wall under lateral earth and water pressure, a support system must be installed on its inner side. A common existing technology is to use steel walers and bracing structures. This structure typically involves installing horizontal steel sections as walers along the inner side of the sheet pile wall after excavation to the design depth. The walers collect the loads transmitted by the sheet piles. Subsequently, steel pipes or H-beams are erected between the walers on both sides of the foundation pit as internal supports. The support members are fixed to the walers by welding or bolting, forming a complete load-bearing frame to balance the lateral pressure outside the pit.

[0004] However, the aforementioned traditional waler support structure has significant drawbacks in application. First, if bolts are used to connect the support members to the waler, under high stress, bolt hole gaps may lead to slippage, resulting in insufficient connection stiffness and load-bearing strength, easily becoming a weak link in the system. Second, if on-site welding is used, the high-temperature heat-affected zone generated during welding will cause irreversible damage to the metallic phase structure of the sheet pile parent material, generating residual stress and reducing its toughness, severely compromising the structural integrity of the sheet pile. Finally, both welding and arbitrary cutting for site adaptation result in damage to the support components and the sheet pile itself, making it difficult to completely dismantle and standardize its reuse after the project, hindering true recycling and causing significant material waste and increased costs. Utility Model Content

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this utility model provides a Larssen sheet pile waler support device. This device uses a hanging plate to movably connect horizontal steel sections and steel supports to the Larssen sheet piles, providing support. During use, it avoids welding the horizontal steel sections to the Larssen sheet piles, protecting the structure from the high temperatures and weld points during welding. It also avoids using bolts to connect the two, preventing structural instability at the connection points. While ensuring the waler support effect, it also protects the structure of the Larssen sheet piles, enabling their recycling.

[0006] To achieve the above objectives, this utility model provides a Larssen sheet pile waler support device, including Larssen sheet piles, a hanging plate disposed on the Larssen sheet piles, horizontal steel sections disposed on the hanging plate, and steel supports; The top of the hanging plate is provided with an inverted U-shaped folding plate, which is suspended from the top of the Larssen steel sheet pile. The hanging plate is provided with a support base, which includes a horizontal plate and a reinforcing plate. The horizontal steel is placed on the support base, and the support base provides vertical support for the horizontal steel. The bottom end of the hanging plate has an adjustment groove, and the adjustment groove is provided with an adjustment component, which is supported between the hanging plate and the Larssen steel sheet pile. The steel support is fixed at one end to a horizontal steel section, providing support for the horizontal steel sections at both ends.

[0007] Furthermore, the adjustment groove is located on the side of the bottom of the hanging plate near the Larssen sheet pile. It includes two sets of inclined grooves. The two sets of inclined grooves are respectively located on both sides of the hanging plate and extend laterally towards the middle. The two inclined grooves are staggered. The bottom surface of the inclined groove is inclined and its depth gradually becomes shallower towards the middle. The two inclined grooves are provided with flat grooves on opposite sides, extending to the side of the hanging plate.

[0008] Furthermore, the two sets of inclined grooves are rotationally symmetrical, with a central circular groove at the center of rotation, and a through hole penetrating the hanging plate in the central circular groove.

[0009] Furthermore, the adjusting component includes two wedges, which are disposed in the inclined groove, with the side of the wedge in contact with the inclined groove being an inclined surface, the slope of which is consistent with the slope of the bottom surface of the inclined groove. Each of the wedges is provided with a rack, the teeth of which are located on its side, and the two racks are arranged opposite each other.

[0010] Furthermore, a gear is provided between the two racks, the gear being located in the central circular groove and meshing with both racks; The shaft of the gear passes through the circular hole in the central groove and connects to the rotating wheel, which drives the gear to rotate.

[0011] Furthermore, a first connecting plate is welded to the middle part of the hanging plate. The first connecting plate is fitted to the hanging plate. One end of the horizontal plate of the support base is welded to the first connecting plate. Its reinforcing plate is a triangular plate, which is welded to the bottom surface of the horizontal plate on one side and to the first connecting plate on the other side to provide reinforced support for the horizontal plate.

[0012] Furthermore, the horizontal steel section includes two parallel end plates and an I-beam disposed between the two end plates, wherein a pair of I-beams are arranged in parallel to support the two end plates; The bottom ends of the two end plates are placed on the horizontal plate of the support base, and one end plate is welded to the first connecting plate, while the other end plate is welded and fixed to the end of the steel support.

[0013] Furthermore, a second connecting plate is welded to the top of the hanging plate. The second connecting plate is fitted to the hanging plate. The second connecting plate is provided with a pull plate seat, and the two ends of the pull plate seat are provided with connecting holes. Near the end of the steel support, there is also a surrounding plate, which is arranged around the axial direction of the steel support, and the top edge of the plate has connecting holes at both ends.

[0014] Furthermore, the connecting holes on the pull plate base and the surrounding plate are positioned correspondingly, and a cable connection is provided in the connecting hole at the same end. The two ends of the cable are provided with hooks to connect the pull plate base and the surrounding plate.

[0015] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects: 1. This utility model relates to a Larssen sheet pile waler support device. A horizontal steel section and a steel support are movably connected to the Larssen sheet pile via a hanging plate, providing support for the sheet pile. During use, this avoids welding the horizontal steel section to the sheet pile, protecting the sheet pile structure from the high temperatures and weld points during welding. It also avoids using bolts to connect the two, preventing structural instability at the connection point. While ensuring the waler support effect, it protects the structure of the Larssen sheet pile, enabling its recycling.

[0016] 2. The Larssen sheet pile waler support device of this utility model uses a rotating wheel to rotate a gear, which causes the racks on both sides to drive the wedges to move in the inclined groove. When the two racks move towards the middle, they provide a thrust to the hanging plate away from the Larssen sheet pile, which is equivalent to adding a plug to it. Under the connecting action of the folded plate at its top, the hanging plate is fastened to the Larssen sheet pile, completing the temporary fixation without causing damage to the Larssen sheet pile. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a Larssen sheet pile waler support device according to an embodiment of the present utility model; Figure 2 This is a plan view of a Larssen sheet pile waler support device according to an embodiment of the present invention, showing the removal of the Larssen sheet pile structure. Figure 3 This is a perspective view of a Larssen sheet pile waler support device according to an embodiment of the present invention, showing the removal of the Larssen sheet pile structure. Figure 4 This is a schematic diagram of the hanging plate structure of a Larssen sheet pile waler support device according to an embodiment of the present utility model; Figure 5This is a schematic diagram of the adjusting groove structure of a Larssen sheet pile waler support device according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the adjustment component structure of a Larssen sheet pile waler support device according to an embodiment of the present invention.

[0018] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-Larsen sheet pile, 2-hanging plate, 21-first connecting plate, 22-second connecting plate, 23-support seat, 24-pull plate seat, 25-adjusting groove, 251-inclined groove, 252-flat groove, 253-intermediate circular groove, 26-adjusting assembly, 261-rack, 262-wedge, 263-gear, 264-wheel, 3-horizontal steel section, 31-end plate, 32-I-beam, 4-steel support, 41-enclosing plate, 5-cable. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0020] like Figure 1-3 As shown, this utility model embodiment provides a Larssen sheet pile waler support device, including a Larssen sheet pile 1, a hanging plate 2 disposed on the Larssen sheet pile 1, a horizontal steel section 3 disposed on the hanging plate 2, and a steel support 4. The hanging plate 2 has an inverted U-shaped folded plate at its top, suspending it from the top of the Larssen sheet pile 1. A support seat 23 is provided on the hanging plate 2, which includes a horizontal plate and a reinforcing plate. The horizontal steel section 3 is disposed on the support seat 23, providing vertical support for the horizontal steel section 3. An adjustment groove 25 is formed at the bottom of the hanging plate 2, and an adjustment component 26 is disposed in the adjustment groove 25. The adjustment component 26 is supported between the hanging plate 2 and the Larssen sheet pile 1. The ends of the steel support 4 are fixed to the horizontal steel section 3, providing support for the horizontal steel section 3 at both ends. The horizontal steel section 3 and steel support 4 are movably connected to the Larssen sheet pile 1 via the hanging plate 2, providing support for the Larssen sheet pile 1. During use, welding the horizontal steel section 3 to the Larssen sheet pile 1 is avoided to protect the structure of the Larssen sheet pile 1 from damage caused by the high temperatures during welding and the weld points. Furthermore, bolts should be avoided to prevent structural instability at the connection point. This ensures the waler support effect while protecting the structure of the Larssen sheet pile 1, enabling its recycling.

[0021] A first connecting plate 21 is welded to the middle part of the hanging plate 2. The first connecting plate 21 is fitted to the hanging plate 2. One end of the horizontal plate of the support base 23 is welded to the first connecting plate 21. Its reinforcing plate is a triangular plate, which is welded to the bottom surface of the horizontal plate on one side and to the first connecting plate 21 on the other side to provide reinforcing support for the horizontal plate.

[0022] The horizontal steel section 3 includes two parallel end plates 31 and an I-beam 32 disposed between the two end plates 31. A pair of I-beams 32 are arranged in parallel to support the two end plates. The bottom ends of the two end plates 31 are placed on the horizontal plate of the support base 23, and one end plate 31 is welded to the first connecting plate 21, while the other end plate is welded and fixed to the end of the steel support 4.

[0023] like Figure 4 , 5 As shown, the adjusting groove 25 is located on the bottom end of the hanging plate 2 near the Larssen sheet pile 1. It includes two sets of inclined grooves 251, which are respectively located on both sides of the hanging plate 2 and extend laterally towards the middle. The two inclined grooves 251 are staggered, and the bottom surface of the inclined groove 251 is inclined, with its depth gradually decreasing towards the middle. On opposite sides of the two inclined grooves 251, there are flat grooves 252 that penetrate the side of the hanging plate 2. The two sets of inclined grooves 251 are rotationally symmetrical, and a central circular groove 253 is located at the center of rotation. A through hole is also provided in this central circular groove 253, penetrating the hanging plate 2.

[0024] like Figure 6 As shown, the adjusting assembly 26 includes two wedges 262, each wedge 262 being disposed in a groove 251. The side of the wedge 262 in contact with the groove 251 is an inclined surface, the inclination of which is consistent with the inclination of the bottom surface of the groove 251. Each wedge 262 is provided with a rack 261, the teeth of which are located on its side, and the two racks 261 are arranged opposite to each other. A gear 263 is also provided between the two racks 261, the gear 263 being disposed in a central circular groove 253 and meshing with both racks 261. The shaft of the gear 263 passes through a circular hole in the central circular groove 253 and is connected to a rotating wheel 264, which drives the gear 263 to rotate.

[0025] It is understandable that the rotating wheel 264 rotates the gear 263, causing the racks 261 on both sides to drive the wedges 262 to move in the inclined groove 251. When the two racks 261 move towards the middle, they provide a thrust to the hanging plate 2 away from the Larssen sheet pile 1, which is equivalent to plugging it. Under the connecting action of the folding plate at its top, the hanging plate 2 is fastened to the Larssen sheet pile 1, completing the temporary fixation without causing damage to the Larssen sheet pile 1.

[0026] A second connecting plate 22 is welded to the top of the hanging plate 2. The second connecting plate 22 is fitted to the hanging plate 2. A pull plate seat 24 is provided on the second connecting plate 22, and connection holes are opened at both ends of the pull plate seat 24. Near the end of the steel support 4, a surrounding plate 41 is also provided. The surrounding plate 41 is arranged around the axial direction of the steel support 4, and connection holes are opened at both ends of its top horizontal plate. The connection holes on the pull plate seat 24 and the surrounding plate 41 are positioned correspondingly, and a cable 5 is provided in the connection hole at the same end for connection. The two ends of the cable 5 are provided with hooks to connect the pull plate seat 24 and the surrounding plate 41.

[0027] As a further preferred embodiment, multiple hanging plates 2 are used simultaneously and are spaced apart along the Larssen sheet piles 1. The horizontal steel sections 3 are mounted on the multiple hanging plates 2 and supported by them. Multiple steel supports 4 are also provided, positioned between opposing horizontal steel sections 3, to provide reinforced support.

[0028] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A Larssen sheet pile waler support device, characterized in that, It includes Larssen sheet piles (1), hanging plates (2) installed on the Larssen sheet piles (1), horizontal steel sections (3) installed on the hanging plates (2), and steel supports (4); The top of the hanging plate (2) is provided with an inverted U-shaped folding plate, which is suspended from the top of the Larsen sheet pile (1). The hanging plate (2) is provided with a support seat (23), which includes a horizontal plate and a reinforcing plate. The horizontal steel section (3) is provided on the support seat (23), and the support seat (23) provides vertical support for the horizontal steel section (3). The bottom end of the hanging plate (2) is provided with an adjustment groove (25), and an adjustment component (26) is provided in the adjustment groove (25). The adjustment component (26) is supported between the hanging plate (2) and the Larssen sheet pile (1). The end of the steel support (4) is fixed to the horizontal steel (3) to support the horizontal steel (3) at both ends.

2. The Larssen sheet pile waler support device according to claim 1, characterized in that, The adjustment groove (25) is located on the side of the bottom of the hanging plate (2) near the Larsen sheet pile (1). It includes two sets of inclined grooves (251). The two sets of inclined grooves (251) are respectively located on both sides of the hanging plate (2) and extend laterally towards the middle. The two inclined grooves (251) are staggered. The bottom surface of the inclined groove (251) is inclined and its depth gradually becomes shallower towards the middle. The two inclined grooves (251) are provided with flat grooves (252) on opposite sides, extending to the side of the hanging plate (2).

3. A Larssen sheet pile waler support device according to claim 2, characterized in that, The two sets of inclined grooves (251) are rotationally symmetrical, and a central circular groove (253) is provided at the center of rotation. A through hole is also provided in the central circular groove (253) to penetrate the hanging plate (2).

4. A Larssen sheet pile waler support device according to claim 3, characterized in that, The adjustment component (26) includes two wedges (262), which are disposed in the inclined groove (251). The side of the wedges (262) that contacts the inclined groove (251) is an inclined surface, and the inclination of the wedges (262) is the same as the inclination of the bottom surface of the inclined groove (251). Each of the wedges (262) is provided with a rack (261) with teeth on its side, and the two racks (261) are arranged opposite each other.

5. A Larssen sheet pile waler support device according to claim 4, characterized in that, A gear (263) is also provided between the two racks (261), the gear (263) is located in the middle circular groove (253) and meshes with both racks (261); The shaft of the gear (263) passes through the circular hole in the intermediate circular groove (253) and is connected to the rotating wheel (264), which drives the gear (263) to rotate.

6. A Larssen sheet pile waler support device according to any one of claims 1-5, characterized in that, A first connecting plate (21) is welded to the middle part of the hanging plate (2). The first connecting plate (21) is fitted to the hanging plate (2). One end of the horizontal plate of the support base (23) is welded to the first connecting plate (21). Its reinforcing plate is a triangular plate, which is welded to the bottom surface of the horizontal plate on one side and to the first connecting plate (21) on the other side to provide reinforcing support for the horizontal plate.

7. A Larssen sheet pile waler support device according to claim 6, characterized in that, The horizontal steel section (3) includes two parallel end plates (31) and an I-beam (32) disposed between the two end plates (31). A pair of I-beams (32) are arranged in parallel to support the two end plates. The bottom ends of the two end plates (31) are placed on the horizontal plate of the support base (23), and one end plate (31) is welded to the first connecting plate (21), while the other end plate is welded to the end of the steel support (4).

8. A Larssen sheet pile waler support device according to any one of claims 1-5, characterized in that, The top of the hanging plate (2) is also welded with a second connecting plate (22), which is fitted to the hanging plate (2). The second connecting plate (22) is provided with a pull plate seat (24), and the two ends of the pull plate seat (24) are provided with connecting holes. Near the end of the steel support (4), there is also a surrounding plate (41), which is arranged around the axial direction of the steel support (4), and the top side of the horizontal plate has connecting holes at both ends.

9. A Larssen sheet pile waler support device according to claim 8, characterized in that, The connection holes on the pull plate seat (24) and the surrounding plate (41) are positioned correspondingly, and a pull cable (5) is provided in the connection hole at the same end. The two ends of the pull cable (5) are provided with hooks to connect the pull plate seat (24) and the surrounding plate (41).

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