Fabricated sheet-pile wall

Abstract

The invention discloses a fabricated sheet-pile wall which comprises a base in which prestressed tendons are pre-buried; the pile columns are borne on the base and arranged in the left-right direction, each pile column comprises a plurality of pile blocks which are vertically arranged and stacked, and each pile block is provided with a vertical reserved hole for a prestressed tendon to penetrate through; the upper end of the pile block is provided with a first upper surface and a second upper surface with a height difference, and the lower end of the pile block is provided with a first lower surface and a second lower surface with a height difference; and the baffles are vertically arranged and clamped between the two adjacent piles. According to the pile block, upper and lower surface height difference matching and upper and lower surface concave-convex matching are adopted, a concave-convex matching structure with multiple contact surfaces is formed, stress concentration is effectively dispersed, the capacity and strength of a wall body for resisting slope thrust are improved, alignment accuracy during stacking is ensured, construction errors are reduced, meanwhile, rapid assembly is facilitated through modular design, and the construction cost is reduced. And the field operation difficulty is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, in particular to an assembled pile-board wall. Background Art

[0002] Pile-sheet walls are retaining structures used to stabilize roadbed slopes. They are widely used in highway, railway, and water conservancy projects. They are particularly suitable for slope reinforcement in areas with steep terrain, soft soil, or potential landslide risks. Their core function is to resist soil pressure, prevent slope slippage, and improve foundation stability.

[0003] Traditional pile-and-sheet wall structures typically utilize cast-in-place concrete, which presents challenges such as long construction periods, extensive on-site work, and challenging quality control. With the development of prefabricated building technology, the use of prefabricated components in pile-and-sheet walls has gradually increased. However, existing prefabricated pile-and-sheet wall structures suffer from deficiencies in stacking accuracy and lateral force transmission when stacking pile blocks. Typically, only one location is designated for lateral force transmission, leading to stress concentration. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an assembled pile-sheet wall.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A prefabricated pile-sheet wall comprises: a base for embedding into the ground and pre-embedded with a prestressed steel bar bundle extending upward and protruding from the base; pile columns supported by the base and arranged in a left-right direction, the pile columns comprising a plurality of pile blocks arranged and stacked vertically, the pile blocks being provided with vertical reserved holes for the prestressed steel bar bundle to pass through; the pile blocks being provided with a first upper surface and a second upper surface with a height difference at the upper end, and a first lower surface and a second lower surface with a height difference at the lower end, the first upper surface and the second upper surface being connected by a first vertical surface, and the first lower surface and the second lower surface being connected by a second vertical surface, the pile blocks being arranged and stacked vertically, the first lower surface, the second lower surface and the second vertical surface of the pile block above being respectively affixed to the first upper surface, the second upper surface and the first vertical surface of the pile block adjacent below, and the first upper surface and the first lower surface affixed to each other, and the first upper surface and the first lower surface affixed to each other are concave-convex matched with each other; and a baffle being arranged vertically and sandwiched between two adjacent pile columns.

[0007] Furthermore, the first upper surface is provided with a first positioning groove, the first lower surface is provided with a first positioning protrusion adapted to the first positioning groove, and the first positioning protrusion of the upper pile block is embedded in the first positioning groove of the adjacent pile block below.

[0008] Furthermore, the second upper surface is provided with a second positioning groove, the second lower surface is provided with a second positioning protrusion adapted to the second positioning groove, and the second positioning protrusion of the upper pile block is embedded in the second positioning groove of the adjacent pile block below.

[0009] Furthermore, a first anchoring hole is provided on the first vertical surface, a second anchoring hole is provided on the second vertical surface, and the second anchoring hole of the upper pile block is aligned and connected with the second anchoring hole of the lower adjacent pile block.

[0010] Furthermore, a corrugated steel pipe is embedded in the vertical reserved hole for the prestressed steel bar to pass through, and the bottom of the corrugated steel pipe embedded in the upper pile block is inserted into the corrugated steel pipe embedded in the adjacent pile block below.

[0011] Furthermore, slots are provided on the left and right sides of the pile block, and both sides of the baffle are embedded in the slots of the corresponding pile blocks.

[0012] Furthermore, the slots and the upper ends of the baffles are arranged to be tilted backward, and a filling piece is sandwiched between the upper and lower adjacent baffles.

[0013] Furthermore, the filling piece includes a pressing block, a bearing block and a connecting block. The pressing block is pressed on the upper end of the lower pile block in the corresponding two adjacent baffles, the bearing block is fitted with the bottom of the upper baffle, and the two ends of the connecting block are respectively connected to the pressing block and the bearing block.

[0014] Furthermore, an upwardly extending blocking bar is provided at one end of the bearing block facing away from the pressing block.

[0015] Furthermore, the blocking bar is provided with an auxiliary support block extending upward for supporting an adjacent filling piece above.

[0016] The present invention has the following beneficial effects:

[0017] The pile blocks utilize a multi-contact concave-convex structure with a height difference between the upper and lower surfaces, as well as a concave-convex fit between the upper and lower surfaces. This structure not only secures adjacent pile blocks longitudinally when stacked, but also transmits lateral forces through the concave-convex fit between the first and lower surfaces, the second and second upper surfaces, and the alignment between the first and second vertical surfaces. This effectively disperses stress concentration and enhances the wall's resistance to slope thrust and strength. The alignment and concave-convex fit between the first and second upper surfaces, as well as the precise alignment between the first and second vertical surfaces, ensure accurate alignment during stacking and minimize construction errors. The modular design facilitates rapid assembly and reduces on-site work complexity. The prestressed steel tendons extend through the vertical holes in the pile blocks and are anchored to the base, creating a rigid longitudinal connection. Combined with the force transmission between the pile blocks, this ensures the pile-sheet wall maintains excellent stability even in adverse geological conditions such as steep slopes and soft soils.

[0018] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a front view of the present invention;

[0021] Figure 2 yes Figure 1 Cross-sectional view at AA;

[0022] Figure 3 yes Figure 1 Cross-sectional view at BB;

[0023] Figure 4 yes Figure 1 Schematic diagram of the decomposed state structure;

[0024] Figure 5 Schematic diagram of the connection structure of the baffle and the filling piece;

[0025] Figure 6 This is a structural diagram of the pile block from one perspective;

[0026] Figure 7 It is a structural diagram of the pile block from another perspective;

[0027] Figure 8 It is a structural diagram of a corrugated steel pipe.

[0028] Legend:

[0029] base 100, prestressed steel tendon 110;

[0030] Pile 200, pile block 210, slot 211, vertical reserved hole 220, first upper surface 230, first vertical surface 231, first positioning groove 232, first anchor hole 233, second upper surface 240, second positioning groove 241, first lower surface 250, second vertical surface 251, first positioning protrusion 252, second anchor hole 253, second lower surface 260, second positioning protrusion 261, corrugated steel pipe 270;

[0031] baffle 300;

[0032] Filling piece 400 , pressing block 410 , bearing block 420 , connecting block 430 , blocking bar 440 , auxiliary supporting block 450 . DETAILED DESCRIPTION

[0033] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] Please refer to Figure 1 and Figure 2In a preferred embodiment of the present invention, an assembled pile-sheet wall includes a base 100, piles 200 and a baffle 300.

[0038] The base 100 is designed to be embedded in the ground and contains prestressed steel tendons 110 extending upward and protruding from the base 100. This embedded base 100 is typically formed by pouring concrete in-situ. A steel cage is housed within the base 100, to which the prestressed steel tendons 110 are welded. The piles 200 are supported on the base 100 and arranged in a horizontal direction. It is understood that the base 100 can also be split, with the number and position of the piles 200 corresponding to each other.

[0039] The pile column 200 includes a plurality of pile blocks 210 arranged vertically and stacked. The pile blocks 210 are provided with vertical reserved holes 220 for the prestressed steel tendons 110 to pass through. The upper ends of the pile blocks 210 are provided with a first upper surface 230 and a second upper surface 240 with a height difference. The lower ends of the pile blocks 210 are provided with a first lower surface 250 and a second lower surface 260 with a height difference. The first upper surface 230 and the second upper surface 240 are connected by a first vertical surface 231. The first upper surface 230 and the second upper surface 240 have a height difference to form a first vertical surface 231. The first lower surface 250 and the second lower surface 260 are connected by a second vertical surface 251. The first lower surface 250 and the second lower surface 260 have a height difference to form a second vertical surface 251. The first upper surface 230 is higher than the second upper surface 240 and is located in front of the second upper surface 240, so that the first vertical surface 231 faces rearward, and the first lower surface 250 is higher than the second lower surface 260 and is located in front of the second lower surface 260, so that the second vertical surface 251 faces forward. In this way, the soil pressure applied from the back to the front can be effectively transmitted through the fit between the first vertical surface 231 and the second vertical surface 251.

[0040] The pile blocks 210 are arranged vertically and stacked. The first lower surface 250, second lower surface 260, and second vertical surface 251 of the upper pile block 210 respectively align with the first upper surface 230, second upper surface 240, and first vertical surface 231 of the adjacent pile block 210 below. Furthermore, the convex and concave surfaces of the mutually abutting first upper surface 230 and first lower surface 250, and the mutually abutting second upper surface 240 and second lower surface 260, are engaged. The baffles 300 are arranged vertically and sandwiched between two adjacent pile columns 200.

[0041] In a preferred embodiment of the present invention, a prefabricated pile-sheet wall is provided. Pile blocks 210 utilize a height difference and a concave-convex fit on their upper and lower surfaces, forming a multi-contact concave-convex structure. This allows adjacent pile blocks 210 to be longitudinally secured by the prestressed steel tendons 110 when stacked. The concave-convex fit between the first upper surface 230 and the first lower surface 250, the concave-convex fit between the second upper surface 240 and the second lower surface 260, and the alignment between the first vertical surface 231 and the second vertical surface 251 facilitates lateral force transmission, effectively dispersing stress concentration and enhancing the wall's ability to resist slope thrust and its strength. The alignment and concave-convex fit between the first upper surface 230 and the first lower surface 250, the alignment and concave-convex fit between the second upper surface 240 and the second lower surface 260, and the precise alignment between the first vertical surface 231 and the second vertical surface 251 of the pile blocks 210 ensure accurate alignment during stacking, reducing construction errors. The modular design also facilitates rapid assembly and reduces the difficulty of on-site operations. The prestressed steel bar bundle 110 passes through the vertical reserved hole 220 of the pile block 210 and is anchored to the base 100, forming a longitudinal rigid connection. Combined with the force transmission between the pile blocks 210, the pile-sheet wall can still maintain excellent stability under adverse geological conditions such as steep slopes and soft soil.

[0042] Reference Figure 2 、 Figure 6 and Figure 7 In some embodiments of the present invention, the first upper surface 230 is provided with a first positioning groove 232, and the first lower surface 250 is provided with a first positioning protrusion 252 that matches the first positioning groove 232. The first positioning protrusion 252 of the upper pile block 210 engages with the first positioning groove 232 of the adjacent pile block 210 below. The engagement of the first positioning protrusion 252 with the first positioning groove 232 creates a concave-convex fit between the first upper surface 230 and the first lower surface 250, thereby optimizing the positioning accuracy between adjacent pile blocks 210, improving the stacking stability of the pile blocks 210, reducing component looseness, and further enhancing the reliability of the device.

[0043] Reference Figure 2 、 Figure 6 and Figure 7 In some embodiments of the present invention, the second upper surface 240 is provided with a second positioning groove 241, and the second lower surface 260 is provided with a second positioning protrusion 261 that matches the second positioning groove 241. The second positioning protrusion 261 of the upper pile block 210 engages with the second positioning groove 241 of the adjacent pile block 210 below. The engagement of the second positioning protrusion 261 with the second positioning groove 241 achieves a concave-convex fit between the second upper surface 240 and the second lower surface 260, thereby improving the positioning accuracy and stacking stability between adjacent pile blocks 210.

[0044] like Figure 6As shown, a plurality of vertical reserved holes 220 are provided and are respectively arranged to extend downward from the bottom walls of the first positioning groove 232 and the second positioning groove 241 .

[0045] Reference Figure 6 and Figure 7 In a further embodiment of the present invention, a first anchor hole 233 is defined on the first vertical surface 231, and a second anchor hole 253 is defined on the second vertical surface 251. The second anchor hole 253 of the upper pile block 210 aligns and communicates with the second anchor hole 253 of the adjacent pile block 210 below, allowing for insertion of an anchor rod. The anchor rod is then inserted into the soil or rock, improving the wall's stability and anti-overturning capability. Furthermore, the first anchor hole 233 penetrates the sidewall of the first positioning groove 232, while the second anchor hole 253 penetrates the first positioning protrusion 252. Thus, the anchor rod's alignment with the first anchor hole 233 and the second anchor hole 253 is equivalent to simultaneously passing through two adjacent pile blocks 210, further strengthening the stability of the stacked connection of the pile blocks 210.

[0046] Reference Figure 2 In some embodiments of the present invention, a corrugated steel pipe 270 is pre-buried in the vertical reserved hole 220 for the prestressed steel bar bundle 110 to pass through. The bottom of the corrugated steel pipe 270 pre-buried on the upper pile block 210 is inserted into the corrugated steel pipe 270 pre-buried in the adjacent pile block 210 below, thereby improving the stacking stability of the pile blocks 210. The corrugated steel pipe can also improve the bending and shear resistance, and improve the structural strength and connection strength of the pile blocks 210. It is understandable that the inner diameter of the corrugated steel pipe 270 is larger than the prestressed steel bar bundle 110, so that a gap is left to facilitate the passage during installation. After installation, grouting can be injected into the gap to eliminate the gap and improve the connection stability. Figure 7 As shown, an insertion section is provided at the bottom of the corrugated steel pipe 270, and the diameter of the insertion section is smaller than the diameter of other parts of the corrugated steel pipe 270. The inner hole at the upper end of the corrugated steel pipe 270 is provided with an expansion hole for inserting the insertion section. The upper and lower corrugated steel pipes 270 are connected by inserting the insertion section into the expansion hole.

[0047] Reference Figure 4 and Figure 6 In a further embodiment of the present invention, slots 211 are provided on the left and right sides of the pile block 210, and the two sides of the baffle 300 are inserted into the corresponding slots 211 of the pile block 210. By inserting the two sides of the baffle 300 into the corresponding slots 211, the baffle 300 is stably installed. This design not only improves the installation stability of the baffle 300, but also understands that the baffle 300 is arranged vertically in correspondence with the pile block 210.

[0048] Reference Figure 3In a further embodiment of the present invention, the slots 211 and the upper ends of the baffles 300 are tilted rearward, and a filler 400 is interposed between upper and lower adjacent baffles 300 to eliminate gaps between the upper and lower adjacent baffles 300 caused by the tilt of the baffles 300. The rearward tilt of the upper ends of the baffles 300 can effectively resist soil and prevent it from flowing upward.

[0049] Reference Figure 3 In a further embodiment of the present invention, the filler 400 includes a pressing block 410, a bearing block 420, and a connecting block 430. The pressing block 410 is pressed against the upper end of the lower baffle 300 of the two adjacent baffles 300, the bearing block 420 is affixed to the bottom of the upper baffle 300 of the two adjacent baffles 300, and the connecting block 430 is connected to the pressing block 410 and the bearing block 420 at both ends. The design of the pressing block 410, the bearing block 420, and the connecting block 430 of the filler 400 ensures that the filler 400 is stably sandwiched between the two adjacent baffles 300, thereby improving the installation stability of the filler 400.

[0050] Reference Figure 3 In a further embodiment of the present invention, an upwardly extending retaining bar 440 is provided on the end of the bearing block 420 facing away from the pressing block 410. This creates space between the retaining bar 440 and the baffle 300 for planting plants, thereby allowing plants to grow on the wall, improving greening and space utilization. It is understood that to facilitate drainage, the baffle 300 may be provided with drainage holes to allow water to seep out of the slope soil layer.

[0051] Reference Figure 3 In a further embodiment of the present invention, the baffle 440 is provided with an upwardly extending auxiliary support block 450 for supporting the adjacent filler 400 above. This allows the filler 400 to be supported in multiple positions by the baffle 300 below and the auxiliary support block 450 during installation, thereby improving placement stability.

[0052] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An assembled pile-sheet wall, characterized in that: include: A base (100) is used to be embedded in the ground and is pre-buried with a prestressed steel bar bundle (110) extending upward and protruding from the base (100); The pile column (200) is supported on the base (100) and arranged in a left-right direction. The pile column (200) includes a plurality of pile blocks (210) arranged and stacked vertically. The pile blocks (210) are provided with vertical reserved holes (220) for the prestressed steel bar bundle (110) to pass through. The upper end of the pile block (210) is provided with a first upper surface (230) and a second upper surface (240) with a height difference, and the lower end is provided with a first lower surface (250) and a second lower surface (260) with a height difference. The first upper surface (230) and the second upper surface (240) are connected by a first vertical surface (231). The first lower surface (250) and the second lower surface (260) are connected by a first vertical surface (231). The surface (250) and the second lower surface (260) are connected via a second vertical surface (251), and the pile blocks (210) are arranged vertically and stacked, and the first lower surface (250), the second lower surface (260), and the second vertical surface (251) of the pile block (210) above are respectively fitted with the first upper surface (230), the second upper surface (240), and the first vertical surface (231) of the pile block (210) below, and the first upper surface (230) and the first lower surface (250) that are fitted together, and the second upper surface (240) and the second lower surface (260) that are fitted together are matched with each other in a concave-convex manner; The baffles (300) are arranged vertically and sandwiched between two adjacent piles (200).

2. The assembled pile-sheet wall according to claim 1, characterized in that: The first upper surface (230) is provided with a first positioning groove (232), and the first lower surface (250) is provided with a first positioning protrusion (252) adapted to the first positioning groove (232), and the first positioning protrusion (252) of the upper pile block (210) is embedded in the first positioning groove (232) of the adjacent pile block (210) below.

3. The assembled pile-sheet wall according to claim 2, characterized in that: The second upper surface (240) is provided with a second positioning groove (241), and the second lower surface (260) is provided with a second positioning protrusion (261) adapted to the second positioning groove (241), and the second positioning protrusion (261) of the upper pile block (210) is embedded in the second positioning groove (241) of the adjacent pile block (210) below.

4. The assembled pile-sheet wall according to claim 3, characterized in that: The first vertical surface (231) is provided with a first anchoring hole (233), the second vertical surface (251) is provided with a second anchoring hole (253), and the second anchoring hole (253) of the pile block (210) above is aligned and connected with the second anchoring hole (253) of the adjacent pile block (210) below.

5. The assembled pile-sheet wall according to claim 3, characterized in that: A corrugated steel pipe (270) is pre-buried in the vertical reserved hole (220) for the prestressed steel bar bundle (110) to pass through, and the bottom of the corrugated steel pipe (270) pre-buried on the upper pile block (210) is inserted into the corrugated steel pipe (270) pre-buried in the adjacent pile block (210) below.

6. The assembled pile-sheet wall according to claim 1, characterized in that: Slots (211) are provided on the left and right sides of the pile block (210), and both sides of the baffle (300) are embedded in the slots (211) of the corresponding pile block (210).

7. The assembled pile-sheet wall according to claim 6, characterized in that: The slots (211) and the upper ends of the baffles (300) are arranged to tilt backward, and a filling piece (400) is sandwiched between the upper and lower adjacent baffles (300).

8. The assembled pile-sheet wall according to claim 7, characterized in that: The filling piece (400) comprises a pressing block (410), a bearing block (420) and a connecting block (430); the pressing block (410) is pressed on the upper end of the lower baffle (300) of the two adjacent baffles (300); the bearing block (420) is in contact with the bottom of the upper baffle (300); and the two ends of the connecting block (430) are respectively connected to the pressing block (410) and the bearing block (420).

9. The assembled pile-sheet wall according to claim 8, characterized in that: An upwardly extending blocking bar (440) is provided at one end of the bearing block (420) facing away from the pressing block (410).

10. The assembled pile-sheet wall according to claim 9, characterized in that: The blocking bar (440) is provided with an upwardly extending auxiliary support block (450) for supporting the adjacent filling piece (400) above.

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