Cable-laid and tensioned steel sheet pile retaining wall structure and its construction method

Abstract

This application relates to a cable-laid and tensioned steel sheet pile retaining wall structure and its construction method, belonging to the technical field of retaining wall structures. The cable-laid and tensioned steel sheet pile retaining wall structure includes a soil retaining part, a fixed anchor part, and a connecting anchor part; the soil retaining part includes a soil retaining support plate, and the fixed anchor part includes a fixed anchor plate and multiple groups of fixed anchor filling piles; the soil retaining support plate is arranged on the fixed anchor plate, one end of the fixed anchor plate away from the soil retaining support plate is arranged on the soil for installing the retaining wall structure, one end of each fixed anchor filling pile penetrates through the fixed anchor plate and is inserted into the soil, and the fixed anchor filling pile is connected to the fixed anchor plate; the connecting anchor part includes multiple tensioned stay cables and multiple groups of docking mechanisms, one end of a tensioned stay cable is connected to a group of fixed anchor filling piles through a group of docking mechanisms, and the other end of the tensioned stay cable is connected to the soil retaining support plate; the construction method includes fixed anchoring, connecting anchoring, and backfilling. This application has the effect of improving the actual uplift strength of the retaining wall structure.

Description

Technical Field

[0001] This application relates to the technical field of retaining wall structures, and particularly to a prestressed cable-pulled steel sheet pile retaining wall structure and its construction method. Background Art

[0002] A retaining wall structure is a building structure used to support a mountain body, foundation pit or roadbed structure to maintain the original structure form. Among them, an anchored retaining wall is a structure that ensures the stable application of the retaining wall by installing anti-pulling structures in the backfill soil.

[0003] Most of the existing anchored retaining wall structures include a wall panel, anchor rods and embedded plates. Among them, the embedded plates are arranged on the wall panel. Taking the installation on the side of an elevated roadbed as an example, construction workers first dig out a cavity on the roadbed where the retaining wall structure needs to be installed for the embedded plates to be filled in. Then, the two ends of the anchor rods are respectively connected to the wall panel and the embedded plates, so that a tensile force is formed between the wall panel and the embedded plates. Finally, the construction workers backfill the cavity dug out on the roadbed so that the wall panel is closely abutted against the backfilled roadbed to form a retaining wall structure that can maintain the stability of the roadbed structure.

[0004] However, the action intensity of the ordinary anchored retaining wall structure on the roadbed is limited, which results in a relatively low actual anti-pulling strength of the retaining wall structure. Therefore, it is difficult to ensure the stability of the retaining wall structure after long-term application. Summary of the Invention

[0005] In order to improve the problem of relatively low actual anti-pulling strength of the retaining wall structure, this application provides a prestressed cable-pulled steel sheet pile retaining wall structure and its construction method.

[0006] In a first aspect, the prestressed cable-pulled steel sheet pile retaining wall structure and its construction method provided by this application adopt the following technical solutions:

[0007] The prestressed cable-pulled steel sheet pile retaining wall structure includes a soil retaining part, a fixed anchor part and a connecting anchor part; the soil retaining part includes a soil retaining support plate, the fixed anchor part includes a fixed anchor plate and multiple groups of fixed anchor filling piles; the soil retaining support plate is arranged on the fixed anchor plate, one end of the fixed anchor plate away from the soil retaining support plate is arranged on the soil where the retaining wall structure needs to be installed, one end of each fixed anchor filling pile penetrates through the fixed anchor plate and is inserted into the soil, and the fixed anchor filling pile is connected to the fixed anchor plate; the connecting anchor part includes multiple pairs of tensile cables and multiple groups of docking mechanisms, one end of one pair of tensile cables is connected to one group of fixed anchor filling piles through one group of docking mechanisms, and the other end of the pair of tensile cables is connected to the soil retaining support plate.

[0008] By adopting the above technical solution, multiple groups of fixed-anchor filling piles pass through the fixed-anchor plate and are inserted and positioned inside the soil mass to limit the position of the fixed-anchor plate relative to the soil mass, greatly improving the position stability of the fixed-anchor plate on the soil mass and also greatly enhancing the connection strength between the fixed-anchor plate and the soil mass. Furthermore, it helps to improve the structural stability and uplift resistance strength of the retaining wall structure after it is formed; the tension anchor cable is connected to the fixed-anchor filling pile through the docking mechanism, enabling the retaining plate to be directly connected to the fixed-anchor filling pile. As a result, the retaining plate can simultaneously tension the fixed-anchor filling pile and the fixed-anchor plate, improving the actual uplift resistance strength of the retaining wall structure and ensuring the structural stability of the retaining wall structure after long-term application.

[0009] In a specific feasible implementation, the length dimensions of adjacent fixed-anchor filling piles located inside the soil mass increase or decrease along the extension direction of the fixed-anchor plate.

[0010] By adopting the above technical solution, after the length dimensions of adjacent fixed-anchor filling piles increase or decrease along the length direction of the fixed-anchor plate, the bearing strength of each fixed-anchor filling pile at the bottom of the fixed-anchor plate inside the soil mass is different, which helps to ensure the positioning stability of the fixed-anchor plate on the soil mass and improves the structural strength and structural stability of the retaining wall structure after it is formed.

[0011] In a specific feasible implementation, each fixed-anchor filling pile includes two groups of uplift resistance mechanisms. Each group of uplift resistance mechanisms includes a main body plate, an extension plate, and a wing retraction plate; the extension plate is connected to the main body plate and the wing retraction plate at the same time, and an insertion channel is formed jointly between the main body plate, the extension plate, and the wing retraction plate; the wing retraction plate of one group of uplift resistance mechanisms is inserted into the insertion channel of the other group of uplift resistance mechanisms, enabling the two groups of uplift resistance mechanisms to form an uplift resistance pile body; a first channel for the uplift resistance pile body to pass through is penetrated and provided on the fixed-anchor plate.

[0012] By adopting the above technical solution, after the wing retraction plate of one group of uplift resistance mechanisms is inserted into the inner cavity of the insertion channel of the other group of uplift resistance mechanisms, the two groups of uplift resistance mechanisms can be assembled into an uplift resistance pile body. After the uplift resistance pile body passes through the first channel, it abuts against the fixed-anchor plate, limiting the position of the fixed-anchor plate on the soil mass, which helps to improve the positioning stability of the fixed-anchor plate on the soil mass.

[0013] In a specific feasible implementation, each fixed-anchor filling pile further includes two groups of side connection mechanisms. One group of side connection mechanisms is correspondingly arranged on one main body plate; each group of side connection mechanisms includes a side connection bar arranged on the main body plate, and a second channel for the side connection bar to pass through is penetrated and provided on the fixed-anchor plate.

[0014] By adopting the above technical solution, the side connection bar passes through the second channel to increase the contact area between the uplift resistance pile body and the fixed-anchor plate, thereby increasing the difficulty of the fixed-anchor plate displacing relative to the uplift resistance pile body on the soil mass and improving the positioning stability of the fixed-anchor plate on the soil mass.

[0015] In a specific feasible implementation, a grouting channel is arranged through the side connecting bar along its own extending direction, and slurry guiding channels are respectively arranged through the side walls of the side connecting bar and on the two opposite sides of the grouting channel. A concrete block is arranged in the inner cavities of the grouting channel and the slurry guiding channels of the side connecting bar.

[0016] By adopting the above technical solution, the concrete slurry is poured into the inner cavities of the grouting channel and the slurry guiding channels to form a concrete block after curing; the concrete block increases the self-weight of the side connecting bar to ensure the position stability of the anti-pulling pile body in the soil mass. Moreover, the concrete block can also bond and fix the contact part between the side connecting bar and the soil mass into a whole through the adhesion property of the concrete, thereby improving the position stability of the anti-pulling pile body inserted into the soil mass and enhancing the anti-pulling strength of the retaining plate relative to the anti-pulling pile body after the retaining plate is connected to the anti-pulling pile body through the tension cable.

[0017] In a specific feasible implementation, the fixed anchor filling pile further includes two groups of external fixing mechanisms, and one group of the external fixing mechanisms is correspondingly arranged on one main board; each group of the external fixing mechanisms includes an external connection bolt and a fixed plate arranged on the main board, and the external connection bolt is used to position the fixed plate on the fixed anchor plate.

[0018] By adopting the above technical solution, the fixed plate increases the contact area between the side connecting bar and the fixed anchor plate, and the external connection bolt fixedly connects the fixed anchor plate and the fixed plate, so that the main board and the fixed anchor plate are fixedly connected into a whole, thereby ensuring the connection strength between the anti-pulling pile body and the fixed anchor plate, and enabling the retaining plate to simultaneously pull the fixed anchor plate and the tension pile body by connecting the tension cable to the tension pile body, improving the actual anti-pulling strength of the retaining wall structure after forming.

[0019] In a specific feasible implementation, each group of the docking mechanisms includes a bottom support plate, a fixed through screw rod and a stop nut. The fixed through screw rod is arranged on the anti-pulling mechanism, and the bottom support plate is arranged on the tension cable; the fixed through screw rod passes through the bottom support plate, and the stop nut is threadedly connected to the fixed through screw rod to connect the bottom support plate with the anti-pulling mechanism.

[0020] By adopting the above technical solution, the bottom support plate increases the contact area between the tension cable and the anti-pulling pile body. After the fixed through screw rod passes through the bottom support plate, the phenomenon of the relative displacement of the bottom support plate with respect to the tension pile body is limited; the stop nut is threadedly tightened on the fixed through screw rod to fixedly connect the bottom support plate and the anti-pulling pile body, thereby quickly and stably connecting the retaining plate and the tension pile body into a whole and ensuring the tension strength between the retaining plate and the tension pile body.

[0021] In a specific feasible implementation, the connecting anchor part further includes a reinforcement mechanism. The reinforcement mechanism includes an expanding plate and multiple groups of reinforcement components; the expanding plate is arranged on each tension cable, and the reinforcement components are used to connect the expanding plate and the fixed anchor plate.

[0022] By adopting the above technical solution, after the fill soil fills the position where the tie-back cable is located, the expanding plate increases the contact area of the tie-back cable in the fill soil, which helps to improve the prestress strength of the tie-back cable, and further helps to improve the uplift strength between the retaining plate and the uplift pile; the reinforcement component connects the expanding plate and the fixed anchor plate, so that the tie-back cable is connected to the fixed anchor plate while being connected to the uplift pile, which further helps to improve the actual uplift strength of the retaining wall structure after forming.

[0023] In a specific feasible implementation, the reinforcement mechanism includes a transfer screw rod, a side extension rod and a positioning screw barrel. The side extension rod is arranged on the transfer screw rod, and one end of the transfer screw rod away from the side extension rod is threadedly inserted through the expanding plate; the positioning screw barrel is arranged on the fixed anchor plate, and one end of the transfer screw rod passing through the expanding plate is threadedly connected to the inner wall of the positioning screw barrel.

[0024] By adopting the above technical solution, after the transfer screw rod is threadedly inserted through the expanding plate and then tightly screwed into the inner cavity of the positioning screw barrel, the expanding plate and the fixed anchor plate are quickly and stably connected; the side extension rod is used for construction workers to rotate the transfer screw rod to improve the convenience and working efficiency of the construction workers rotating the transfer screw rod.

[0025] In the second aspect, the present application also discloses a construction method for the cable tie-back steel sheet pile retaining wall structure. The construction method includes the following construction steps:

[0026] Fixed anchor: Excavate a pit on the soil where the retaining wall structure is installed for the fixed anchor plate to be buried, and insert the fixed anchor pile through the fixed anchor plate and into the soil below the fixed anchor plate.

[0027] Connected anchor: Connect one end of the tie-back cable to the part of the fixed anchor pile above the fixed anchor plate through the docking mechanism, and then connect the other end of the tie-back cable to the retaining plate, so as to form a tie-back force between the retaining plate and the fixed anchor plate.

[0028] Backfill: Backfill the excavated pit on the soil, and compact the backfill soil with the soil until the retaining plate is in close contact with the backfilled soil.

[0029] By adopting the above technical solution, construction workers can quickly and efficiently complete the construction of the retaining wall structure, and the formed retaining wall structure has the advantages of stable structure and large actual uplift strength.

[0030] In summary, the present application has the following beneficial technical effects:

[0031] 1. A plurality of fixed-anchor filling piles connected to the fixed-anchor plate pass through the fixed-anchor plate and are inserted into the soil mass to limit the position of the fixed-anchor plate on the soil mass, and the positioning stability of the fixed-anchor plate on the soil mass is improved through the connection strength between the fixed-anchor filling piles and the soil mass; the tension cable is connected to the fixed-anchor filling pile through the docking mechanism, so that the retaining plate is connected to the fixed-anchor filling pile, which helps to increase the tension strength of the retaining plate relative to the fixed-anchor filling pile and ensures the actual anti-pulling strength of the retaining wall structure after it is formed.

[0032] 2. The transfer screw rod is threaded through the expanding plate and then tightly screwed into the side wall of the positioning screw cylinder, so that the expanding plate is connected to the fixed-anchor plate. Thus, the retaining plate can be connected to the fixed-anchor plate and all the fixed-anchor filling piles through a single tension cable, improving the structural strength and actual anti-pulling strength of the retaining wall structure. Description of the Drawings

[0033] Figure 1 is a schematic structural diagram of the cable-pulling steel sheet pile retaining wall structure in the embodiment of the present application;

[0034] Figure 2 is an exploded schematic diagram of the connection relationship between the anti-pulling pile body and the fixed-anchor plate in the embodiment of the present application;

[0035] Figure 3 is a schematic diagram of the positional relationship between the side connecting bar and the anti-pulling mechanism in the embodiment of the present application.

[0036] Description of the Reference Numerals:

[0037] 1, retaining part; 11, retaining plate; 2, fixed-anchor part; 21, fixed-anchor plate; 211, first channel; 212, second channel; 22, fixed-anchor filling pile; 3, connecting-anchor part; 4, anti-pulling mechanism; 41, main body plate; 42, extension plate; 43, wing-receiving plate; 44, insertion channel; 45, anti-pulling pile body; 5, side connecting mechanism; 51, side connecting bar; 511, grouting channel; 512, slurry guiding channel; 513, concrete block; 6, external fixing mechanism; 61, fixing plate; 62, external connecting bolt; 7, tension cable; 8, docking mechanism; 81, bottom support plate; 82, fixed-through screw rod; 83, stop nut; 9, reinforcement mechanism; 91, expanding plate; 92, reinforcement component; 921, transfer screw rod; 922, side extension rod; 923, positioning screw cylinder. Detailed Description of the Embodiment

[0038] The embodiment of the present application discloses a cable-pulling steel sheet pile retaining wall structure.

[0039] The following Figures 1-3 further elaborates on the present application in detail.

[0040] Refer to Figure 1, the cable-laying and tensioning steel sheet pile retaining wall structure includes a soil retaining part 1, a fixed anchor part 2, and a connecting anchor part 3. Among them, the soil retaining part 1 is positioned on the soil for installing the retaining wall structure through the fixed anchor part 2. The connecting anchor part 3 connects the soil retaining part 1 and the fixed anchor part 2 to form a tensioning structure between the soil retaining part 1 and the fixed anchor part 2, thereby jointly improving the actual uplift strength of the retaining wall structure on the soil.

[0041] Refer to Figure 1 , the soil retaining part 1 includes a soil retaining support plate 11, and the fixed anchor part 2 includes a fixed anchor plate 21. In this embodiment, both the soil retaining support plate 11 and the fixed anchor plate 21 can be solid steel plates, and the soil retaining support plate 11 and the fixed anchor plate 21 are integrally formed, presenting an L shape between them.

[0042] Refer to Figure 1 , in order to improve the installation stability of the fixed anchor plate 21 on the soil and the subsequent uplift strength of the soil retaining support plate 11 on the soil, the fixed anchor part 2 further includes multiple groups of fixed anchor filling piles 22. One end of all the fixed anchor filling piles 22 close to the fixed anchor plate 21 passes through the fixed anchor plate 21 and is inserted and positioned inside the soil, and the other ends of all the fixed anchor filling piles 22 are located on the top of the fixed anchor plate 21.

[0043] Refer to Figure 1 , the length dimensions of the adjacent fixed anchor filling piles 22 located inside the soil increase or decrease in sequence from the end of the fixed anchor plate 21 close to the soil retaining support plate 11 to the end of the fixed anchor plate 21 far from the soil retaining support plate 11. In this embodiment, they increase in sequence from the end of the fixed anchor plate 21 close to the soil retaining support plate 11 to the end of the fixed anchor plate 21 far from the soil retaining support plate 11. That is, among all the fixed anchor filling piles 22, the fixed anchor filling pile 22 closest to the soil retaining support plate 11 has the smallest length dimension located inside the soil, and the fixed anchor filling pile 22 farthest from the soil retaining support plate 11 has the largest length dimension located inside the soil. By means of the fixed anchor filling piles 22, the contact area between the fixed anchor plate 21 and the soil is increased, and due to the characteristic that the connection strengths of the variable-diameter fixed anchor filling piles 22 with the soil are different, it helps to increase the position stability of the fixed anchor plate 21 on the soil.

[0044] Refer to Figure 2 and Figure 3 , each group of fixed anchor filling piles 22 includes two groups of uplift mechanisms 4, two groups of side connection mechanisms 5, and two groups of external fixation mechanisms 6. Among them, each group of uplift mechanisms 4 includes a main body plate 41, an extension plate 42, and a wing receiving plate 43. The extension plate 42 is welded between the main body plate 41 and the wing receiving plate 43, and the length dimension of the main body plate 41 is greater than the length dimension of the wing receiving plate 43. In this embodiment, the main body plate 41, the extension plate 42, and the wing receiving plate 43 are all solid steel plates. One side in the width direction of the extension plate 42 is coplanar with both the main body plate 41 and the wing receiving plate 43 at the same time, and on the other side in the width direction of the extension plate 42 and between the main body plate 41 and the wing receiving plate 43, there is formed an insertion channel 44, and the width dimension of the inner cavity of the insertion channel 44 is adapted to the width dimension of the wing receiving plate 43.

[0045] Reference Figure 2 and Figure 3 After the construction workers insert the wing retracting plate 43 of a group of uplift mechanisms 4 into the insertion channels 44 of another group of uplift mechanisms 4, the two groups of uplift mechanisms 4 can form a group of uplift pile bodies 45 through assembly. A first channel 211 is vertically penetrated through the fixed anchor plate 21, and the inner diameter dimension of the first channel 211 is adapted to the outer peripheral dimension of the uplift pile body 45. The uplift pile body 45 passes through the first channel 211 and is inserted into the soil mass, and is stably inserted into the soil mass through its own rigidity, thereby limiting the phenomenon of relative displacement of the fixed anchor plate 21 with respect to the soil mass and improving the position stability of the fixed anchor plate 21 on the soil mass.

[0046] Reference Figure 2 and Figure 3 A group of external fixing mechanisms 6 are correspondingly arranged on one main body plate 41 to fix the uplift pile body 45 located at the top of the fixed anchor plate 21 to the top of the fixed anchor plate 21. Each group of external fixing mechanisms 6 includes a fixing plate 61 and an external connection bolt 62. Among them, the fixing plate 61 is integrally formed on the outer side wall of the main body plate 41, and the bottom wall of the fixing plate 61 abuts against the top wall of the fixed anchor plate 21. The external connection bolt 62 passes through the fixing plate 61 and is screwed tightly into a threaded groove preset on the top wall of the fixed anchor plate 21, so that the fixing plate 61 and the fixed anchor plate 21 are fixedly connected as a whole, thereby improving the connection strength between the main body plate 41 and the fixed anchor plate 21 and the connection strength of the fixed anchor plate 21 on the soil mass.

[0047] Reference Figure 2 and Figure 3 A group of side connection mechanisms 5 are correspondingly arranged on one main body plate 41 to improve the position stability of the uplift pile body 45 in the soil mass and the position stability of the uplift pile body 45 relative to the fixed anchor plate 21. Each group of side connection mechanisms 5 includes a side connection strip 51, and the side connection strip 51 is integrally formed on the main body plate 41. In this embodiment, the length dimension of the side connection strip 51 is equal to the length dimension of the main body plate 41. A second channel 212 is vertically penetrated through the fixed anchor plate 21, and the inner diameter dimension of the second channel 212 is adapted to the outer peripheral dimension of the side connection strip 51. Then, by passing the side connection strip 51 through the second channel 212, the abutting area of the uplift pile body 45 relative to the fixed anchor plate 21 is increased, which helps to ensure the position stability of the uplift pile body 45 relative to the fixed anchor plate 21.

[0048] Reference Figure 3, a grouting channel 511 is provided through the top wall of the side connecting strip 51 along the length direction. Guide slurry channels 512 are respectively provided through the side walls of the side connecting strip 51 on both sides opposite to the grouting channel 511. The inner cavity of each guide slurry channel 512 is communicated with the inner cavity of the grouting channel 511. Construction workers pour slow-setting concrete slurry into the top opening of the grouting channel 511. After the concrete slurry fills the grouting channel 511 and all the guide slurry channels 512, it solidifies into a concrete building block 513. At this time, the concrete building block 513 not only increases the self-weight of the side connecting strip 51 in the soil to increase the position stability of the side connecting strip 51 in the soil, but also can connect the side connecting strip 51 and the soil for the side connecting strip 51 to be inserted into, further improving the position stability of the side connecting strip 51 in the soil.

[0049] Refer to Figure 1 and Figure 2 , the connecting and anchoring part 3 is used to connect the retaining plate 11 to the anti-pulling pile body 45 and the fixed anchor plate 21 at the same time to ensure the anti-pulling strength of the retaining wall after forming. The connecting and anchoring part 3 includes multiple pairs of tension cables 7, multiple groups of docking mechanisms 8 and a reinforcement mechanism 9. Among them, one end of a pair of tension cables 7 close to the fixed anchor plate 21 is connected to a group of anti-pulling pile bodies 45 through a group of docking mechanisms 8.

[0050] Refer to Figure 2 , each group of docking mechanisms 8 further includes a bottom support plate 81, a fixed through screw 82 and a locking nut 83. Among them, the outer peripheral dimension of the bottom support plate 81 is larger than the outer diameter dimension of the pair of tension cables 7, and the bottom support plate 81 is welded to one end of the pair of tension cables 7 close to the fixed anchor plate 21. The fixed through screw 82 is arranged on the anti-pulling pile body 45 in the vertical direction. In this embodiment, the number of fixed through screws 82 on each anti-pulling pile body 45 can be two, and each fixed through screw 82 can be welded to the top wall of the main body plate 41, or the top wall of the extension plate 42, or the top wall of the wing receiving plate 43.

[0051] Refer to Figure 2 , after the bottom wall of the bottom support plate 81 abuts against the top wall of the anti-pulling pile body 45, the fixed through screw 82 passes through the bottom support plate 81. Construction workers thread the locking nut 83 tightly onto the fixed through screw 82 to fix the bottom support plate 81 on the fixed through screw 82, so that one end of the pair of tension cables 7 close to the anti-pulling pile body 45 is quickly and stably fixed on the anti-pulling pile body 45. One end of the pair of tension cables 7 away from the bottom support plate 81 is welded to the retaining plate 11, so that a tensile force is formed between the retaining plate 11 and the anti-pulling pile body 45, effectively ensuring the anti-pulling strength of the retaining wall structure in practical applications.

[0052] Refer to Figure 2, the reinforcement mechanism 9 includes an expanding plate 91 and multiple groups of reinforcement components 92. Among them, the expanding plate 91 is welded to the outer peripheral wall of each pair of tension cables 7 in the horizontal direction, and the reinforcement components 92 are used to connect the expanding plate 91 and the fixed anchor plate 21, so that the retaining plate 11 is also connected to the fixed anchor plate 21 through the tension cables 7. In this embodiment, there can be two groups of reinforcement components 92 on each expanding plate 91.

[0053] Refer to Figure 2 , each group of reinforcement components 92 includes a transfer screw rod 921, a side extension rod 922 and a positioning screw cylinder 923. Among them, the side extension rod 922 is welded to the outer side wall of the transfer screw rod 921, and the side extension rod 922 is located at one end of the transfer screw rod 921 in the length direction. Construction workers can quickly screw the transfer screw rod 921 by grasping the side extension rod 922, and then the end of the transfer screw rod 921 away from the side extension rod 922 is threadedly inserted into the expanding plate 91.

[0054] Refer to Figure 2 , the positioning screw cylinder 923 is welded to the top wall of the fixed anchor plate 21 in the vertical direction. The positioning screw cylinder 923 is located below the transfer screw rod 921, and the central axis of the positioning screw cylinder 923 is collinear with the central axis of the transfer screw rod 921. The end of the transfer screw rod 921 close to the positioning screw cylinder 923 can be screwed tightly into the side wall of the positioning screw cylinder 923, so that the expanding plate 91 and the fixed anchor plate 21 are fixedly connected as a whole. At this time, the retaining plate 11 is connected to the fixed anchor plate 21 and the anti-pulling pile body 45 at the same time, greatly improving the actual anti-pulling strength of the retaining wall structure.

[0055] The implementation principle of the cable tensioned steel sheet pile retaining wall structure in the embodiment of the present application is as follows: Multiple anti-pulling pile bodies 45 pass through the fixed anchor plate 21 and are inserted into the soil mass, increasing the contact area between the fixed anchor plate 21 and the soil mass, which helps to improve the connection strength and anti-pulling strength of the retaining wall structure on the soil mass. The lengths of the adjacent anti-pulling pile bodies 45 located inside the soil mass are distributed in a variable diameter state to increase the position stability of all the anti-pulling pile bodies 45 inside the soil mass, which further helps to improve the anti-pulling strength of the retaining wall structure on the soil mass.

[0056] The tension cables 7 are connected to the fixed anchor plate 21 and each anti-pulling pile body 45 at the same time, greatly improving the structural stability and tension strength inside the retaining wall structure, which further helps to improve the actual anti-pulling strength of the retaining wall structure on the soil mass and ensures the structural stability of the retaining wall structure after long-term application.

[0057] The embodiment of the present application also discloses a construction method of the cable tensioned steel sheet pile retaining wall structure. The construction method includes the following construction steps:

[0058] Anchoring: Excavate a pit in the soil where the retaining wall structure is to be installed for the anchor plate 21 to be buried. Insert the wing-receiving plate 43 of a set of uplift resistance mechanisms 4 into the insertion channel 44 of another set of uplift resistance mechanisms 4, so that the two sets of uplift resistance mechanisms 4 form a set of uplift resistance piles 45.

[0059] Drive the uplift resistance pile 45 into the first channel 211 through a pile driver, and make the side connecting bar 51 pass through the second channel 212. Pour the concrete slurry into the inner cavity of the grouting channel 511 until the concrete slurry overflows from the top opening of the grouting channel 511 to form a concrete block 513 in the grouting channel 511 and the slurry guiding channel 512. At this time, the anchor plate 21 is preliminarily positioned on the soil, and the connection strength and connection stability between the anchor plate 21 and the soil are greatly improved.

[0060] Linking the anchor: Connect the bottom wall of the bottom support plate 81 to the top wall of the uplift resistance pile 45, pass the fixed-through screw rod 82 through the bottom support plate 81, and then thread-tighten the stop nut 83 on the fixed-through screw rod 82. At this time, one end of the tension cable 7 close to the anchor plate 21 is connected to the uplift resistance pile 45. The other end of the tension cable 7 is welded to the outer side wall of the retaining soil support plate 11, so as to form a tension force between the retaining soil support plate 11 and the uplift resistance pile 45.

[0061] Thread the transfer screw rod 921 through the expanding plate 91 and then thread-tighten it into the side wall of the positioning cylinder 923, so that the expanding plate 91 is connected to the anchor plate 21. At this time, the retaining soil support plate 11 is connected to the anchor plate 21 and each uplift resistance pile 45 through the tension cable 7 at the same time, and the structural stability and uplift resistance strength of the retaining wall structure are greatly improved, which helps to ensure the retaining wall.

[0062] Backfilling: Backfill the excavated pit in the soil, compact the backfill soil and the soil until the retaining soil support plate 11 is in close contact with the backfilled soil to complete the construction of the retaining wall structure. The formed retaining wall structure has the characteristics of high actual uplift resistance strength and still stable structure after long-term application.

[0063] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. The structure of the retaining wall of steel sheet piles with cable bracing and counter-pulling is characterized in that: It includes a retaining part (1), an anchoring part (2) and a connecting anchoring part (3); the retaining part (1) includes a retaining support plate (11), the anchoring part (2) includes an anchoring plate (21) and multiple groups of anchoring filling piles (22); the retaining support plate (11) is arranged on the anchoring plate (21), one end of the anchoring plate (21) away from the retaining support plate (11) is arranged on the soil for installing the retaining wall structure, one end of each anchoring filling pile (22) penetrates through the anchoring plate (21) and is inserted into the soil, and the anchoring filling pile (22) is connected to the anchoring plate (21); the connecting anchoring part (3) includes multiple tension cables (7) and multiple groups of docking mechanisms (8), one end of a tension cable (7) is connected to a group of anchoring filling piles (22) through a group of docking mechanisms (8), and the other end of the tension cable (7) is connected to the retaining support plate (11); each anchoring filling pile (22) includes two groups of anti-pulling mechanisms (4), and each group of anti-pulling mechanisms (4) includes a main body plate (41), an extension plate (42) and a wing receiving plate (43); the extension plate (42) is simultaneously connected to the main body plate (41) and the wing receiving plate (43), and an insertion channel (44) is jointly formed among the main body plate (41), the extension plate (42) and the wing receiving plate (43); the wing receiving plate (43) of a group of anti-pulling mechanisms (4) is inserted into the insertion channel (44) of another group of anti-pulling mechanisms (4) to form a group of anti-pulling pile bodies (45) by the two groups of anti-pulling mechanisms (4); a first channel (211) for the anti-pulling pile body (45) to pass through is penetrated and arranged on the anchoring plate (21); each anchoring filling pile (22) further includes two groups of side connection mechanisms (5), and a group of side connection mechanisms (5) is correspondingly arranged on one main body plate (41); each group of side connection mechanisms (5) includes a side connection bar (51) arranged on the main body plate (41), and a second channel (212) for the side connection bar (51) to pass through is penetrated and arranged on the anchoring plate (21); a grouting channel (511) is penetrated and arranged along the extending direction of the side connection bar (51), and slurry guiding channels (512) are respectively penetrated and arranged on the side walls of the side connection bar (51) on the two sides opposite to the grouting channel (511), and concrete building blocks (513) are arranged in the inner cavities of the grouting channel (511) and the slurry guiding channels (512) of the side connection bar (51); the connecting anchoring part (3) further includes a reinforcement mechanism (9), and the reinforcement mechanism (9) includes an expanding plate (91) and multiple groups of reinforcement components (92); the expanding plate (91) is arranged on each tension cable (7), and the reinforcement components (92) are used for connecting the expanding plate (91) and the anchoring plate (21); the reinforcement mechanism (9) includes a transfer screw rod (921), a side extension rod (922) and a positioning screw barrel (923), the side extension rod (922) is arranged on the transfer screw rod (921), and one end of the transfer screw rod (921) away from the side extension rod (922) is threadedly penetrated through the expanding plate (91);The positioning screw barrel (923) is arranged on the anchor plate (21), and one end of the transfer screw rod (921) passes through the extension plate (91) and is threadedly connected to the side wall of the positioning screw barrel (923); the retaining support plate (11) and the anchor plate (21) are integrally formed, and an L-shape is formed between the two. ; 2. The cable-laying and counter-pulling steel sheet pile retaining wall structure according to claim 1, wherein: The length dimension of the adjacent fixed anchor filling piles (22) located in the soil increases or decreases along the extension direction of the fixed anchor plate (21).

3. The cable-laying and counter-pulling steel sheet pile retaining wall structure according to claim 2, characterized in that: The fixed anchor filling piles (22) further include two groups of external fixing mechanisms (6), and one group of the external fixing mechanisms (6) is correspondingly arranged on one main body plate (41); each group of the external fixing mechanisms (6) includes an external connection bolt (62) and a fixing plate (61) arranged on the main body plate (41), and the external connection bolt (62) is used to position the fixing plate (61) on the fixed anchor plate (21).

4. The cable-laying and counter-pulling steel sheet pile retaining wall structure according to claim 3, characterized in that: Each group of the docking mechanisms (8) includes a bottom support plate (81), a fixed through screw rod (82) and a stop nut (83), the fixed through screw rod (82) is arranged on the anti-pulling mechanism (4), and the bottom support plate (81) is arranged on the tension cable (7); the fixed through screw rod (82) passes through the bottom support plate (81), and the stop nut (83) is threadedly connected to the fixed through screw rod (82) to connect the bottom support plate (81) with the anti-pulling mechanism (4).

5. The construction method of the cable-laid and tensioned steel sheet pile retaining wall structure according to claim 4, characterized in that: It includes the following construction steps: Fixed anchor: Excavate a pit on the soil where the retaining wall structure is installed for the fixed anchor plate (21) to be buried, pass the fixed anchor filling piles (22) through the fixed anchor plate (21) and insert them into the soil below the fixed anchor plate (21). Connected anchor: Through the docking mechanism (8), connect one end of the tension cable (7) with the part of the fixed anchor filling piles (22) above the fixed anchor plate (21), and then connect the other end of the tension cable (7) with the retaining support plate (11) to form a tensile force between the retaining support plate (11) and the fixed anchor plate (21). Backfill: Backfill the excavated pit on the soil, compact the backfill soil with the soil until the retaining support plate (11) is in close contact with the backfilled soil.

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