CN216615793U - Prestressed concrete sheet pile and assembled soil retaining structure thereof - Google Patents

Abstract

The utility model provides a prestressed concrete sheet pile and an assembled soil-retaining structure thereof, which comprise a pile body; the pile body is cylindrical, the two sides of the pile body are provided with symmetrically arranged wing edges, the wing edges on the two sides are provided with tongues and grooves, the two sides of the wing edges are arc-shaped, and the arc at the joint of the pile body and the wing edges is processed in a tangent mode. Longitudinal main reinforcements are arranged in the pile body and the wing edges, and a reinforcement cage structure is formed by encircling the pile body and the wing edges through stirrups, so that the wing edges on two sides can be effectively reinforced, and the two sides are not easy to damage in the pile sinking process; the wing edges are provided with the grooves and the tongues, so that pile sinking positioning can be assisted, the assembly precision of the precast pile retaining structure is improved, and the reliable connection of the nodes is ensured; the tongue-and-groove of both sides wing limit can not lead to long setting, and pile sinking straightness has the error once, is difficult to cause the difficult damage of pile sinking and rabbet department. The utility model has the advantages of reasonable structure, high rigidity, high production and manufacture efficiency and reliable construction.

Description

Prestressed concrete sheet pile and assembled soil retaining structure thereof

Technical Field

The utility model belongs to the technical field of retaining and enclosing structures, and relates to a prestressed concrete sheet pile and an assembled soil retaining structure thereof.

Background

The prestressed concrete pile has the advantages of high pile body bearing capacity, stable quality, high construction speed, low comprehensive construction cost, environmental protection on site and the like, is mainly applied to foundations in construction engineering, is acted by vertical load, is gradually applied to retaining engineering of water conservancy, water transportation and foundation pit enclosure in recent years, does not need to intercept cofferdams, small excavation and filling and small wet operation amount when applied to wading engineering, and has obvious comprehensive economic advantages compared with the traditional retaining wall structure. At present, the precast piles commonly used in the supporting shelves comprise I-shaped piles, U-shaped sheet piles, mixed reinforced tubular piles and the like, but the following problems are found in practical application:

problem 1: the I-shaped pile and the U-shaped sheet pile belong to special-shaped section piles, the wall thickness is small, the width is large, the section rigidity is large, the bearing capacity is high, but the cage ribs are difficult to realize mechanical production, and can be formed only by adopting a pouring mode, the manufacturing efficiency is low, the cost is high, meanwhile, the special section of the pile sinking machine is low in adaptation degree with the pile sinking machine, and the configured special fixture is easy to cause the damage of a pile head.

Problem 2: the mixed reinforcement tubular pile is a high-ductility prestressed tubular pile with the added non-prestressed reinforcement 6, the pile body of the mixed reinforcement tubular pile is reasonable in structure, large in rigidity, high in bearing capacity and good in ductility, but the pile body of the mixed reinforcement tubular pile is not provided with grooves and tongues, certain gaps exist among the piles after pile sinking, anti-leakage measures need to be arranged behind the piles, and the soil-retaining width of a single pile is smaller than that of other special-shaped piles.

Problem 3: a support pile, because its section longitudinal bar is arranged along the pile body of tubular pile circularly, tenon ear and mortise ear have no longitudinal reinforcement, meet the pile head apt to damage in the course of sinking the pile in the slightly hard soil horizon; secondly, the mortise and tenon structure of tenon ear and mortise ear is through long, and pile sinking is easy to cause pile sinking difficulty and damage of a pile body at the mortise and tenon structure once the verticality has an error.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problem, the utility model provides a prestressed concrete sheet pile and an assembled soil-retaining structure thereof. Prestressed reinforcements are arranged in the pile body and the wing edges, and a reinforcement framework structure is formed by encircling the pile body and the wing edges through stirrups, so that the wing edges on two sides can be effectively reinforced, and the two sides are not easy to damage in the pile sinking process; the wing edges are provided with the grooves and the tongues, so that pile sinking positioning can be assisted, the assembly precision of the precast pile retaining structure is improved, and the reliable connection of the nodes is ensured; the tongue-and-groove of both sides wing limit can not lead to long setting, and pile sinking straightness has the error once, is difficult to cause the difficult damage of pile sinking and rabbet department. The utility model has the advantages of reasonable structure, high rigidity, high production and manufacture efficiency and reliable construction.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a prestressed concrete sheet pile comprises a pile body, wing edges and a reinforcement cage; the pile body is cylindrical, the two sides of the pile body are provided with symmetrically arranged wing edges, the wing edges on the two sides are provided with tongues and grooves, the two sides of the wing edges are arc-shaped, the arc of the joint of the pile body and the wing edges is tangent, the reinforcement cage comprises prestressed steel bars and stirrups surrounding the prestressed steel bars, and the prestressed steel bars are arranged in the pile body and the wing edges.

In the scheme, the stirrups are surrounded along the prestressed reinforcement to form an octagonal reinforcement cage.

In the scheme, the stirrups are divided into a first stirrup and a second stirrup; the first stirrups form the steel reinforcement cage around the prestressing steel in the pile body, the second stirrups encircles the prestressing steel in the wing limit and is connected with the prestressing steel in the pile body.

In the above scheme, the ratio of the arc radius of the wing edge to the arc radius of the pile body is 1: 1.0-1: 2.0.

in the scheme, the pile body is also provided with non-prestressed reinforcements, and the non-prestressed reinforcements and the prestressed reinforcements are arranged in a staggered mode.

In the scheme, the rabbet on one side of the wing edge is provided with a female tenon penetrating through the length of the pile body, and the rabbet on the other side of the wing edge is provided with a male tenon penetrating through the pile body.

In the scheme, the tongue-and-groove on one side of the wing edge is provided with a through long female tenon, the part of the tongue-and-groove on the other side, which is close to the pile end, is provided with a short male tenon, and the rest part is a female tenon.

In the scheme, the grooves and the grooves on the two sides of the wing edges are S-shaped male and female tenons which are arranged in an antisymmetric mode.

In the scheme, the tongue-and-groove at two sides of the wing edge are arc tenons.

An assembled soil retaining structure comprises a plurality of prestressed concrete sheet piles, wherein adjacent prestressed concrete sheet piles are matched and connected through tongue-and-grooves of wing edges on two sides to form a sheet pile type soil retaining structure.

In the scheme, when the wing edge on one side is provided with the through long female tenon, the pile end part of the wing edge on the other side is provided with the male tenon, the other part of the female tenon is provided with the female tenon, and concrete is poured in a cavity formed by the female tenons of two adjacent concrete sheet piles.

The assembled soil retaining structure comprises a plurality of prestressed concrete sheet piles, wherein a prefabricated plate is arranged between every two adjacent prestressed concrete sheet piles, concave arc grooves are respectively arranged on two sides of the prefabricated plate, and the arc grooves are matched and connected with wing edge tongue-and-groove openings of the prestressed concrete sheet piles to form the pile plate type soil retaining structure.

In the scheme, the height of the precast slab is not less than the distance from the top of the concrete sheet pile to the front mud surface of the pile-slab type soil retaining structure.

The prestressed concrete sheet pile is produced and manufactured by adopting a centrifugal process, and the implementation path of the prestressed concrete sheet pile soil retaining structure is as follows: 1. vertically driving the foundation into a foundation, densely arranging to form a continuous soil retaining structure, taking the tenon on one side as positioning guide for the trapezoidal male and female tenons, and pouring micro-expansion cement mortar or fine stone concrete into the groove on the upper part of the adjacent pile after pile sinking is in place to form an anti-seepage measure; the arc-shaped male and female tenons and the S-shaped male and female tenons are occluded through the tongue-and-groove, and adjacent piles are connected to form a sheet pile type soil retaining structure. 2. The prefabricated plate pile adopts arc tenons, the end faces of two sides of the prefabricated plate pile are provided with concave arc grooves, and the prefabricated plate pile tenons are occluded with the prefabricated plate pile tenons to form the pile-plate type soil retaining structure capable of steering.

Compared with the prior art, the utility model has the beneficial effects that:

the two sides of the pile body are provided with symmetrically arranged wing edges, the wing edges on the two sides are provided with the tongue-and-groove, the two sides of the wing edges are arc-shaped, and the arc at the joint of the pile body and the wing edges is processed in a tangent manner, so that the transition is smooth, and the stress concentration is reduced; prestressed reinforcements are arranged in the pile body and the wing edges, and a reinforcement framework structure is formed by encircling the pile body and the wing edges through stirrups, so that the wing edges on two sides can be effectively reinforced, and the two sides are not easy to damage in the pile sinking process; the mixed configuration of prestress and non-prestress reinforcement is adopted, so that the bearing capacity of the pile body can be improved, the displacement ductility of the pile body can be improved, and the seismic performance of the pile body is enhanced; the wing edges are provided with the grooves and the tongues, so that pile sinking positioning can be assisted, the assembly precision of the precast pile retaining structure is improved, and the reliable connection of the nodes is ensured; the tongue-and-groove of both sides wing limit can not lead to long setting, and pile sinking straightness has the error once, is difficult to cause the difficult damage of pile sinking and rabbet department. The utility model has the advantages of reasonable structure, high rigidity, beautiful outer vertical surface, high production efficiency and reliable construction.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a prestressed concrete sheet pile according to an embodiment;

FIG. 2 is a cross-section taken along line A-A of FIG. 1;

FIG. 3 is a cross-section taken along line B-B of FIG. 1;

FIG. 4 is a schematic view of a reinforcement form according to an embodiment;

FIG. 5 is a schematic view of a reinforcement form II according to an embodiment;

FIG. 6 is a schematic view of a reinforcement form according to an embodiment;

FIG. 7 is a diagram illustrating a reinforcement pattern according to an embodiment;

FIG. 8 is a schematic view of a tongue-and-groove joint according to an embodiment;

FIG. 9 is a schematic illustration of a splice according to an embodiment;

FIG. 10 is a schematic cross-sectional view of a prestressed concrete sheet pile according to a second embodiment;

FIG. 11 is a schematic view of a tongue-and-groove joint according to a second embodiment;

FIG. 12 is a schematic diagram of a second embodiment of splicing;

FIG. 13 is a schematic cross-sectional view of a prestressed concrete sheet pile according to an embodiment;

FIG. 14 is a schematic view of a three-groove joint according to the embodiment;

FIG. 15 is a schematic diagram of a third splice of an embodiment;

FIG. 16 is a schematic cross-sectional view of a four prestressed concrete sheet pile according to an example;

FIG. 17 is a schematic view of a four-tongue-and-groove joint according to an embodiment;

FIG. 18 is a diagram illustrating a fourth embodiment of a splice.

In the figure, 1, a pile body; 2. a wing edge; 4. hooping; 4-1, a first stirrup; 4-2. a second stirrup; 5. pre-stressing a steel bar; 6. non-prestressed reinforcement; 7. hooking; 8. a trapezoidal groove; 9. a trapezoidal tenon; 10. an inward concave arc; 11. a convex arc; 12. an inwardly concave arc; 13. a convex arc; 14. arc tenon; 15. provided is a prefabricated slab.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected with each other or indirectly connected with each other through an intermediate medium, and the two components can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example 1

As shown in fig. 1, 2 and 3, the prestressed concrete sheet pile comprises a pile body 1, a wing edge 2 and a reinforcement cage; the pile body 1 is cylindrical, the two sides of the pile body 1 are provided with symmetrically arranged wing edges 2, the wing edges 2 on the two sides are provided with grooves and tongues, the two sides of the wing edges 2 are arc-shaped, and the arc at the joint of the pile body 1 and the wing edges 2 is tangent to reduce stress concentration. The steel reinforcement cage includes prestressing steel 5 and encircles stirrup 4 on prestressing steel 5, prestressing steel 5 sets up in pile body 1 and wing limit 2, can effectively strengthen both sides wing limit, guarantee that both sides are not fragile at pile sinking in-process. The pile body 1 has large section height, high rigidity and large retaining height, and after the arc-shaped wing edges 2 are additionally arranged, the retaining width of a single pile is greatly improved compared with that of a tubular pile with the same diameter, so that the comprehensive economy is high. The wing edges 2 are provided with the grooves and the tongues, so that pile sinking positioning can be assisted, the assembly precision of the precast pile retaining structure is improved, and the reliable connection of the nodes is ensured.

As shown in fig. 4 and 5, the arrangement form of the reinforcement cage may be: the stirrup 4 surrounds along the prestressed reinforcement 5 to form an octagonal reinforcement cage, mechanical roll welding can be realized for the octagonal reinforcement cage, and the production efficiency is high.

As shown in fig. 6 and 7, the arrangement form of the reinforcement cage may also be: the stirrups 4 are divided into a first stirrup 4-1 and a second stirrup 4-2; the first stirrups 4-1 surround the prestressed reinforcement 5 in the pile body 1 to form a reinforcement cage, and the second stirrups 4-2 surround the prestressed reinforcement 5 in the wing edges 2 and are connected with the prestressed reinforcement 5 in the pile body. Preferably, prestressed reinforcements 5 are arranged in the pile body 1 and surround along the main reinforcements through first stirrups 4-1 to form a circular reinforcement cage, two main reinforcements are uniformly arranged in the wing edges 2 on two sides, the main reinforcements of the wing edges 2 are provided with second stirrups 4-2, and the second stirrups 4-2 are connected with the main reinforcements of the circular reinforcement cage. And the second stirrups 4-2 of the wing edges 2 are provided with hooks 7 for hooking the main reinforcements of the circular steel reinforcement cage. Preferably, the second stirrups 4-2 are trapezoidal steel bars. The wing edges 2 are provided with prestressed steel bars 5, so that the wing edges on two sides can be effectively enhanced, and the two sides are not easy to damage in the pile sinking process.

The ratio of the arc radius of the pile body 1 to the arc radius of the wing edge 2 is 1: 1.0-1: 2.0. the wing edges 2 are tangent to the main body circular arc of the pile body 1 through the circular arcs, stress concentration is reduced, the ratio of the circular arc radius of the wing edges 2 to the circular arc radius of the pile body is preferably 1:1.5, and the optimal visual effect of the retaining wall formed by integrating concrete consumption, pile body rigidity, assembly and the like can be achieved.

As shown in fig. 4 to 7, the longitudinal main reinforcement of the pile body 1 is prestressed reinforcement 5, or prestressed reinforcement 5 and non-prestressed reinforcement 6 are combined and configured. By adopting the mixed configuration of the prestressed reinforcement 5 and the non-prestressed reinforcement 6, the bearing capacity of the pile body can be improved, the displacement ductility of the pile body can be improved, and the seismic performance of the pile body can be enhanced. As shown in fig. 2 and 3, the tongue-and-groove at both sides of the wing edge 2 is a trapezoidal male-female tenon. The trapezoidal male and female tenons can be provided with trapezoidal grooves 8 for the wing edges 2 on one side, trapezoidal tenons 9 for the wing edges 2 on the other side, and the trapezoidal grooves 8 and the trapezoidal tenons 9 are all arranged in a through length mode. Trapezoidal negative and positive tenon also can be for one side wing limit 2 to be equipped with through long trapezoidal recess 8, and opposite side wing limit 2 is close to the stake end part and is equipped with short trapezoidal tenon 9, and trapezoidal tenon 9's length is less than stake end bottom, and the end plate structure on both sides is the same, low in production cost, and production efficiency is higher. As shown in FIG. 1, preferably, the length of the trapezoidal tenon 9 is 1-3 m of the pile body 1, and the rest part is a trapezoidal groove 8. The non-through length arrangement of the rabbet of the two side wing edges 2 prevents the pile sinking difficulty and the damage of the rabbet from being caused once the verticality of the pile sinking has an error.

Example 2

As shown in fig. 10, the difference between this embodiment 2 and embodiment 1 is that the tongue-and-groove on both sides of the flange 2 is an arc-shaped male-female tenon. The arc-shaped male and female tenons can be provided with an inner concave arc 10 for the wing edge 2 on one side, an outer convex arc 11 for the wing edge 2 on the other side, and the inner concave arc 10 and the outer convex arc 11 are all arranged in a through length mode. The arc-shaped male and female tenon can also be formed by arranging a through-long concave arc 10 on the wing edge 2 on one side, arranging a convex arc 11 on the pile end part of the wing edge 2 on the other side and arranging the concave arc 10 on the other part.

Example 3

As shown in fig. 13, the present embodiment 3 is different from embodiment 1 in that the grooves on both sides of the flange 2 are S-shaped male and female tenons arranged in an anti-symmetric manner. The S-shaped male-female tenon is characterized in that the front part of one side wing edge 2 is provided with an inward-concave circular arc 12, the rear part of the S-shaped male-female tenon is provided with an outward-convex circular arc 13, the inward-concave circular arc 12 and the outward-convex circular arc 13 are in smooth transition to form a curve similar to an S shape, the front part of the other side wing edge 2 is provided with an outward-convex circular arc 13, the rear part of the S-shaped male-female tenon is provided with an inward-concave circular arc 12, and the outward-convex circular arc 13 and the inward-concave circular arc 12 are in smooth transition to form a curve similar to the S shape. The arc transition is carried out at the intersection point of the concave arc 12 and the wing arc, and the arc transition is carried out at the intersection point of the convex arc 13 and the wing arc. The S-shaped male and female tenons are arranged in a through length mode.

Example 4

As shown in fig. 16, the difference between this embodiment 4 and embodiment 1 is that the tongue-and-groove on both sides of the wing edge 2 are arc-shaped tenons. The arc-shaped tenon can be an arc-shaped tenon 14 with convex wing edges 2 at both sides; the arc tenons 14 on both sides are all arranged in a through length. The arc-shaped tenon 14 can also be an arc-shaped tenon 14 with a through length arranged on the wing edge 2 at one side, an arc-shaped tenon 14 arranged at the pile end part of the wing edge 2 at the other side, and the rest part is an inward concave arc.

Example 5

As shown in fig. 8, 9, 11, 12, 14 and 15, a sectional soil guard structure includes a plurality of prestressed concrete sheet piles according to embodiments 1 to 3, and adjacent prestressed concrete sheet piles are connected by tongue-and-groove engagement of two side flanges 2 to form a sheet pile type soil guard structure. When the wing edge 2 on one side is provided with a through-long female tenon, the pile end part of the wing edge 2 on the other side is provided with a male tenon and the other part is a female tenon, and micro-expansion cement mortar or fine stone concrete is poured into a cavity formed by the female tenons of two adjacent concrete sheet piles.

Example 6

As shown in fig. 17 and 18, an assembled soil retaining structure includes a plurality of prestressed concrete sheet piles according to embodiment 4, wherein a prefabricated slab 15 is disposed between adjacent prestressed concrete sheet piles, two sides of the prefabricated slab 15 are respectively provided with concave arc grooves, and the arc grooves are connected with tongue-and-groove portions of the wing edges 2 of the prestressed concrete sheet piles in a matching manner to form a pile-plate type soil retaining structure. Preferably, the height of the prefabricated plate 15 is not less than the top of the concrete sheet pile to the front mud surface of the pile-plate type soil retaining structure.

The retaining structure outer vertical face that embodiment 5 and 6 were assembled and are formed is the arcwall face, and undulates like the wave, and the pile body is the crest, and the flange concatenation forms the trough, and lines are soft smooth and easy, and the stereoeffect is pleasing to the eye. The two wing edges of the arc-shaped male and female tenons in the embodiment 2 and the arc-shaped tenon in the embodiment 4 have tongue-and-groove forms, so that the radian change of the sheet pile type soil retaining structure and the pile plate type soil retaining structure along a shoreline can be realized, and the change of a maximum 45-degree corner can be adapted.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims (13)

1. A prestressed concrete sheet pile is characterized by comprising a pile body (1), wing edges (2) and a reinforcement cage; the pile body (1) is cylindrical, the two sides of the pile body (1) are provided with symmetrically-arranged wing edges (2), the wing edges (2) on the two sides are provided with grooves and tongues, the two sides of the wing edges (2) are arc-shaped, the circular arc at the joint of the pile body (1) and the wing edges (2) is tangent to the treatment, the reinforcement cage comprises prestressed reinforcements (5) and stirrups (4) surrounding the prestressed reinforcements (5), and the prestressed reinforcements (5) are arranged in the pile body (1) and the wing edges (2).

2. Prestressed concrete sheet pile according to claim 1, characterized in that the stirrups (4) are surrounded along the prestressed reinforcement (5) to form an octagonal reinforcement cage.

3. Prestressed concrete sheet pile according to claim 1, characterized in that said stirrups (4) are divided into a first stirrup (4-1) and a second stirrup (4-2); the first stirrups (4-1) form a reinforcement cage around the prestressed reinforcement (5) in the pile body (1), and the second stirrups (4-2) encircle the prestressed reinforcement (5) in the wing edges and are connected with the prestressed reinforcement (5) in the pile body.

4. Prestressed concrete sheet pile according to claim 1, characterized in that the ratio of the radius of the arc of the pile body (1) to the radius of the arc of the wing (2) is 1: 1.0-1: 2.0.

5. prestressed concrete sheet pile according to claim 1, characterized in that the pile body (1) is further provided with non-prestressed reinforcement (6), said non-prestressed reinforcement (6) and prestressed reinforcement (5) being staggered.

6. A prestressed concrete sheet pile according to claim 1, characterized in that the rebate on one side of the flanges (2) is provided with a female tenon extending through the length of the pile body and the rebate on the other side is provided with a male tenon extending through the pile body.

7. A prestressed concrete sheet pile according to claim 1, characterized in that the rebate on one side of the flange (2) is provided with a through-long female rebate, the part of the rebate on the other side near the pile end is provided with a short male rebate, and the rest is a female rebate.

8. A prestressed concrete sheet pile according to claim 1, characterised in that the rebates on both sides of the flanges (2) are S-shaped male and female tenons arranged in anti-symmetrical fashion.

9. Prestressed concrete sheet pile according to claim 1, characterized in that the rebates on both sides of the flange (2) are arc-shaped tenons.

10. An assembled soil retaining structure, characterized in that it comprises a plurality of prestressed concrete sheet piles as claimed in any one of claims 1 to 8, adjacent prestressed concrete sheet piles being connected in a matched manner by means of the tongue-and-groove of the two side flanges (2) to form a sheet pile type soil retaining structure.

11. A sectional soil retaining structure according to claim 10 wherein when the one wing edge (2) is provided with a through-length female tenon, the pile end portion of the other wing edge (2) is provided with a male tenon, the remaining portion of the female tenon, and the cavity formed by the female tenons of two adjacent concrete sheet piles is filled with concrete.

12. An assembled soil retaining structure, which is characterized by comprising a plurality of prestressed concrete sheet piles as claimed in claim 9, wherein a precast slab (15) is arranged between adjacent prestressed concrete sheet piles, two sides of the precast slab (15) are respectively provided with an inward-concave arc groove, and the arc grooves are matched and connected with tongue-and-groove joints of wing edges (2) of the prestressed concrete sheet piles to form a pile-plate type soil retaining structure.

13. Assembled soil retaining structure according to claim 12, characterized in that the height of the precast slabs (15) is not less than the top of the concrete sheet pile to the front mud face of the sheet-pile soil retaining structure.

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