A retaining wall reinforcement structure for large volume fill

Abstract

The present invention relates to a retaining wall reinforcement structure for large-volume earth filling, comprising a retaining wall and a first prestressed anchor cable, wherein the retaining wall comprises a bottom plate, a wall panel arranged on the bottom plate, and a plurality of buttresses arranged between the bottom plate and the wall panel and arranged at intervals; a plurality of reserved holes are arranged at intervals along the vertical direction at one end of the buttress, and two reserved holes at the same height on two adjacent buttresses form a group of reserved hole groups; a connecting channel having the same number and one-to-one correspondence as the reserved hole groups is arranged in the wall panel, and the connecting channel is located between the two reserved holes of the corresponding reserved hole group, and is respectively connected with the two reserved holes of the corresponding reserved hole group to form an anchor cable channel; the number of the first prestressed anchor cable and the anchor cable channel is the same and one-to-one correspondence, one end of the first prestressed anchor cable is locked by a first locking member, and the other end of the first prestressed anchor cable is locked by a second locking member after passing through the corresponding anchor cable channel. The present invention enables the retaining wall to meet the support function of large-volume earth filling and the stability requirements of the retaining wall itself.

Description

Technical Field

[0001] The invention belongs to the technical field of retaining walls, and in particular relates to a retaining wall reinforcement structure for large-volume filling. Background Art

[0002] Retaining wall is a light-weight retaining structure. The anti-sliding and anti-overturning of its retaining structure mainly depend on the deadweight of the wall and the gravity effect of the backfill soil (including load) above the wall bottom plate. At present, retaining walls mainly include gravity type, anchor type, cantilever type, buttress type, hollow box type and sheet pile type. Since the retaining wall adopts reinforced concrete structure, its structural thickness is reduced, its deadweight is reduced, and the stiffness of the reinforced concrete bottom plate is improved, so that the retaining wall vertical arm height is higher and the adaptability under the condition of low foundation bearing capacity is improved. However, the current retaining wall is suitable for low-height slopes, not for high-fill slopes, and cannot meet its safety technical indicators under economic conditions. When a large volume of backfill is treated with a single anchoring measure (such as the first prestressed anchor cable, lattice anchor cable, etc.), due to the low bonding strength between the backfill and the anchor body, a large-diameter long first prestressed anchor cable is often required to meet the design safety standard, which has high construction cost and complex construction process. In addition, when the backfill contains a high content of broken stones, it is difficult to form holes and the prestress is easy to lose. And if a large volume of soil needs to be piled up, the retaining wall needs to be lengthened and raised. This will make the wall heavier and cracking and instability will cause more serious engineering accidents. The wall is prone to breakage in the middle of the horizontal or vertical direction. Summary of the invention

[0003] The object of the present invention is to provide a large-volume earth-fill retaining wall reinforcement structure, which can enable the retaining wall to meet the support function of the large-volume earth-fill and the stability requirements of the retaining wall itself.

[0004] The present invention is achieved through the following technical solutions:

[0005] A retaining wall reinforcement structure for large-volume earth filling, comprising a retaining wall and a first prestressed anchor cable, wherein the retaining wall comprises a bottom plate, a wall panel arranged on the bottom plate, and a plurality of buttresses arranged between the bottom plate and the wall panel, wherein the plurality of buttresses are arranged at intervals;

[0006] A plurality of reserved holes are arranged at intervals along the vertical direction at one end of the buttress away from the wall panel, and two reserved holes at the same height on two adjacent buttresses form a group of reserved holes;

[0007] A plurality of communication channels are provided in the wall panel, the number of the communication channels is the same as the number of the reserved hole groups and they correspond one to one, the communication channels are located between two reserved holes of the corresponding reserved hole group, and the two ends of the communication channels are respectively connected with the two reserved holes of the corresponding reserved hole group to form an anchor cable channel;

[0008] The number of the first prestressed anchor cables is the same as that of the anchor cable channels and they correspond one to one. One end of the first prestressed anchor cable is locked by a first locking member, and the other end of the first prestressed anchor cable passes through the corresponding anchor cable channel and is locked by a second locking member.

[0009] Furthermore, the two outermost buttresses among the plurality of buttresses are end buttresses, which are respectively flush with the two ends of the wall panel and the two ends of the bottom plate, and stress conduction devices for unloading the soil pressure on the end buttresses are respectively provided between one end of the bottom plate and one end of the wall panel and between the other end of the bottom plate and the other end of the wall panel.

[0010] Further, the stress conduction device comprises a second prestressed anchor cable, a fixed pulley assembly, a plurality of vertical pulley assemblies and a plurality of horizontal pulley assemblies, wherein the fixed pulley assembly is located below the wall panel and is arranged on the bottom plate, the plurality of vertical pulley assemblies are located above the fixed pulley assembly and are arranged on the wall panel, the plurality of vertical pulley assemblies are arranged at intervals in the vertical direction, the plurality of horizontal pulley assemblies are located on one side of the fixed pulley assembly and are arranged on the bottom plate, and the plurality of horizontal pulley assemblies are arranged at intervals in the horizontal direction;

[0011] The number of second prestressed anchor cables is the same as that of the vertical pulley assemblies and they correspond one to one. The first end of the second prestressed anchor cable is fixed on the fixed pulley assembly. The second end of the second prestressed anchor cable is fixedly arranged after passing through the corresponding vertical pulley assembly, several horizontal pulley assemblies and the fixed pulley assembly in sequence. The second prestressed anchor cable contacts the end buttress.

[0012] Furthermore, the fixed pulley assembly, the vertical pulley assembly and the horizontal pulley assembly all include a steel plate for mounting on a wall panel or a bottom plate and a pulley disposed on the steel plate.

[0013] Furthermore, a PVC tube is provided in the anchor cable channel, and the first prestressed anchor cable passes through the PVC tube in the corresponding anchor cable channel.

[0014] Furthermore, the buttress includes an upper part and a lower part, the reserved holes located in the upper part are first reserved holes, the reserved holes located in the lower part are second reserved holes, and the distance between two adjacent second reserved holes on the buttress is smaller than the distance between two adjacent first reserved holes.

[0015] Furthermore, the outer sides of the first prestressed anchor cable and the second prestressed anchor cable are coated with an anti-corrosion coating.

[0016] Furthermore, the buttress is in a right-angle trapezoidal shape, the lower bottom edge of the buttress is connected to the bottom plate, and the high side of the buttress is connected to the wall panel.

[0017] Further, the number of the vertical pulley assemblies is the same as the number of the reserved holes on a buttress.

[0018] Furthermore, the second end of the second prestressed anchor cable is anchored on the power clamp, the foundation or the supporting pile.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) A number of first prestressed anchor cables are added to the retaining wall, so that the retaining wall can obtain greater rigidity. After the backfill is accumulated, the first prestressed anchor cables can offset most of the soil pressure, so that the retaining wall with the original rigidity can accommodate an increased volume of backfill, and the retaining wall can be heightened and lengthened on the basis of maintaining a small thickness of the retaining wall;

[0021] (2) When a part of the retaining wall is deformed too much during the filling process, the tension of the first prestressed anchor cable can be quickly adjusted to control the stress and deformation of the retaining wall, reduce the risk of cracking, damage or collapse of the retaining wall, and reinforce the retaining wall and unload the earth pressure on the retaining wall at a lower economic and space cost, thereby extending the service life of the retaining wall and ensuring the safety of the surrounding environment;

[0022] (3) The present invention has good mechanical properties, is safe and reliable, and can be widely used. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a large volume earthfill retaining wall reinforcement structure of the present invention;

[0024] Figure 2 It is a partial perspective view of the large volume earth filling retaining wall reinforcement structure of the present invention;

[0025] Figure 3 It is a schematic diagram of fixing the second prestressed anchor cable on the power clamp in the reinforcement structure of the retaining wall for large volume fill of the present invention;

[0026] Figure 4 It is a schematic diagram of fixing the second prestressed anchor cable on the foundation in the large-volume earth-fill retaining wall reinforcement structure of the present invention;

[0027] Figure 5 It is a schematic diagram of fixing the second prestressed anchor cable on the supporting pile in the reinforcement structure of the retaining wall for large volume fill of the present invention.

[0028] In the figure, 1-retaining wall, 11-bottom plate, 12-wall panel, 13-buttress, 2-first prestressed anchor cable, 3-anchor cable channel, 31-reserved hole, 32-connecting channel, 4-end buttress, 5-stress conduction device, 51-second prestressed anchor cable, 52-fixed pulley assembly, 53-vertical pulley assembly, 54-horizontal pulley assembly, 55-steel plate, 56-pulley, 6-PVC pipe, 7-power clamp, 8-foundation, 9-support piles. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0034] See also Figure 1 and Figure 2 , Figure 1This is a schematic structural diagram of a large volume earthfill retaining wall reinforcement structure of the present invention. Figure 2 A large volume earth-fill retaining wall reinforcement structure includes a retaining wall 1 and a first prestressed anchor cable 2, wherein the first prestressed anchor cable 2 is arranged in the retaining wall 1 to increase the rigidity of the retaining wall 1.

[0035] Specifically, the retaining wall 1 includes a base plate 11, a wall panel 12 arranged on the base plate 11, and a plurality of buttresses 13 arranged between the base plate 11 and the wall panel 12, wherein the buttresses 13 are arranged at intervals. A plurality of reserved holes 31 are arranged at intervals along the vertical direction at one end of the buttress 13 away from the wall panel 12, and two reserved holes 31 at the same height on two adjacent buttresses 13 form a group of reserved holes 31. The specific arrangement number and height of the reserved holes 31 on the buttress 13 are determined according to the height of the retaining wall 1, and can be flexibly arranged after calculation according to the actual required fill volume and soil pressure and the size of the retaining wall 1. In one embodiment, the buttress 13 is in a right-angled trapezoid, and the lower bottom edge of the buttress 13 is connected to the base plate 11, and the high side thereof is connected to the wall panel 12.

[0036] A plurality of connecting channels 32 are provided in the wall panel 12. The number of connecting channels 32 is the same as that of the reserved hole 31 group and they correspond one to one. The connecting channel 32 is located between the two reserved holes 31 of the corresponding reserved hole 31 group, and the two ends of the connecting channel 32 are respectively connected with the two reserved holes 31 of the corresponding reserved hole 31 group to form an anchor cable channel 3. The number of the first prestressed anchor cables 2 and the anchor cable channels 3 are the same and they correspond one to one. One end of the first prestressed anchor cable 2 is locked by a first locking piece, and the other end of the first prestressed anchor cable 2 passes through the corresponding anchor cable channel 3 and is locked by a second locking piece. For each anchor cable channel 3 and each first prestressed anchor cable 2, one end of the first prestressed anchor cable 2 can be locked at one end of the corresponding anchor cable channel 3 by a first locking member, and after the other end of the first prestressed anchor cable 2 passes through the corresponding anchor cable channel 3, it can be locked at the other end of the corresponding anchor cable channel 3 by a second locking member, so that the first prestressed anchor cable 2 is in a tensioned state. In this way, the bending stiffness of the retaining wall 1 can be improved. After the retaining wall 1 is backfilled, the first prestressed anchor cable 2 can offset most of the soil pressure, so that the retaining wall 1 with the original stiffness can accommodate an increased volume of backfill, and the retaining wall 1 body can be heightened and lengthened on the basis of maintaining a relatively small thickness of the wall body. Preferably, the tension value of the first prestressed anchor cable 2 is 1.05 times the design tension value of the first prestressed anchor cable 2. In one embodiment, the first locking member and the second locking member are anchors.

[0037] In order to reduce the layout cost of the present invention, in one embodiment, the buttress 13 includes an upper part and a lower part, the reserved hole 31 located in the upper part is a first reserved hole, the reserved hole 31 located in the lower part is a second reserved hole, and the distance between two adjacent second reserved holes on the buttress 13 is less than the distance between two adjacent first reserved holes. This arrangement allows the multi-layer anchor cable channels 3 on the retaining wall 1 to be arranged in a "sparse upper and dense lower" manner. According to different stress conditions of the retaining wall 1, first prestressed anchor cables 2 with different densities are arranged in the upper and lower parts of the retaining wall 1 to reduce the layout cost. Specifically, the distance between two adjacent first reserved holes in the upper part is 1-2 meters, and the distance between two adjacent second reserved holes in the lower part is 3-5 meters.

[0038] In order to ensure the tensioning effect of the first prestressed anchor cable 2, in one embodiment, a PVC tube 6 is provided in the anchor cable channel 3, and the first prestressed anchor cable 2 passes through the PVC tube 6 in the corresponding anchor cable channel 3. The PVC tube 6 is used to surround the first prestressed anchor cable 2, so as to facilitate the tensioning effect of the first prestressed anchor cable 2.

[0039] Please refer to Figure 3 , Figure 4 and Figure 5 , Figure 3 This is a schematic diagram of fixing the second prestressed anchor cable on the power clamp in the large-volume earthfill retaining wall reinforcement structure of the present invention. Figure 4 This is a schematic diagram of fixing the second prestressed anchor cable on the foundation in the large-volume earthfill retaining wall reinforcement structure of the present invention. Figure 5The schematic diagram of the second prestressed anchor cable being fixed on the support pile in the reinforcement structure of the retaining wall for large-volume fill of the present invention. In one embodiment, the two buttresses 13 located on the outermost sides of the plurality of buttresses 13 are end buttresses 4, and the end buttresses 4 are respectively flush with the two ends of the wall panel 12 and the two ends of the bottom plate 11, and a stress conduction device 5 for unloading the soil pressure on the end buttresses 4 is respectively provided between one end of the bottom plate 11 and one end of the wall panel 12 and between the other end of the bottom plate 11 and the other end of the wall panel 12. There are two stress conduction devices 5, and the bottom plate 11 and the wall panel 12 both have a first end and a second end that are arranged oppositely, and the first end of the bottom plate 11 is flush with the first end of the wall panel 12, and the second end of the bottom plate 11 is flush with the second end of the wall panel 12. One stress conduction device 5 is arranged on the first end of the bottom plate 11 and the first end of the wall panel 12, and the other stress conduction device 5 is arranged on the second end of the bottom plate 11 and the second end of the wall panel 12, and the two stress conduction devices 5 are respectively in contact with the two end buttresses 4. After the retaining wall 1 is backfilled, the buttress 13 in the middle is subjected to a more uniform earth pressure because there is backfill on both sides, and is not prone to cracking and damage. However, since the end buttress 4 is located at the outermost side and is subjected to earth pressure on only one side, it is prone to cracking and damage, or even collapse. Therefore, the outer side surface of the end buttress 4 is in contact with the stress conduction device 5, and the earth pressure on the end buttress 4 is unloaded through the stress conduction device 5, thereby reducing the risk of cracking, damage or collapse of the end buttress 4.

[0040] In one embodiment, the stress conduction device 5 includes a second prestressed anchor cable 51, a fixed pulley assembly 52, a plurality of vertical pulley assemblies 53 and a plurality of horizontal pulley assemblies 54, the fixed pulley assembly 52 is located below the wall panel 12 and is arranged on the bottom plate 11, the plurality of vertical pulley assemblies 53 are located above the fixed pulley assembly 52 and are arranged on the wall panel 12, the plurality of vertical pulley assemblies 53 are arranged at intervals in the vertical direction, the plurality of horizontal pulley assemblies 54 are located on one side of the fixed pulley assembly 52 and are arranged on the bottom plate 11, and the plurality of horizontal pulley assemblies 54 are arranged at intervals in the horizontal direction; the number of the second prestressed anchor cables 51 and the vertical pulley assemblies 53 are the same and correspond one to one, the first end of the second prestressed anchor cable 51 is fixed on the fixed pulley assembly 52, the second end of the second prestressed anchor cable 51 is fixedly arranged after passing through the corresponding vertical pulley assembly 53, the plurality of horizontal pulley assemblies 54 and the fixed pulley assembly 52 in sequence, and the second prestressed anchor cable 51 is in contact with the end buttress 4. One end of the fixed pulley assembly 52 and the horizontal pulley assembly 54 is inserted into the bottom plate 11, and one end of the vertical pulley assembly 53 is inserted into the wall panel 12, so that when the second prestressed anchor cable 51 is wound around the fixed pulley assembly 52, the vertical pulley assembly 53 and the horizontal pulley assembly 54, it contacts the bottom plate 11, the wall panel 12 and the end buttress 4 respectively, and the second prestressed anchor cable 51 plays the role of pulling the load, changing the direction of force application and stress diffusion, so as to avoid damage caused by excessive stress in local positions. Specifically, Figure 3As shown, there are four vertical pulley assemblies 53, which are the first pulley assembly, the second pulley assembly, the third pulley assembly and the fourth pulley assembly from bottom to top, two horizontal pulley assemblies 54, which are the fifth pulley assembly and the sixth pulley assembly from left to right, and the number of second prestressed anchor cables 51 is the same as that of the vertical pulley assemblies 53, i.e., four. The four second prestressed anchor cables 51 correspond to the first pulley assembly, the second pulley assembly, the third pulley assembly and the fourth pulley assembly, respectively. The second prestressed anchor cable 51 corresponding to the fourth pulley assembly is used as an example for explanation. First, the first end of the second prestressed anchor cable 51 is fixed on the fixed pulley assembly 52, and then the second end of the second prestressed anchor cable 51 passes around the upper end of the fourth pulley assembly, and then passes around the fifth pulley assembly, the sixth pulley assembly and the fixed pulley assembly 52 in sequence, and then is fixedly set. The other three second prestressed anchor cables 51 are wound and fixed in the above manner. After the retaining wall 1 is backfilled, the soil pressure on the end buttress 4 is transferred away by the second prestressed anchor cable 51, thereby unloading the soil pressure on the end buttress 4, achieving internal force balance inside the retaining wall 1 and reducing the risk of cracking, damage or collapse of the end buttress 4.

[0041] The reinforcement structure of the retaining wall 1 for large volume filling of the present invention can be applied to the reinforcement treatment of the retaining wall 1 in various situations such as temporary support reinforcement, anchoring with pile foundation, anchoring without pile foundation, etc. In one embodiment, the second end of the second prestressed anchor cable 51 is anchored on the power clamp 7, the foundation 8 or the support pile 9. In temporary support reinforcement, such as short-term stacking or emergency rescue construction, the second end of the second prestressed anchor cable 51 is anchored on the power clamp 7 after bypassing the corresponding vertical pulley assembly 53, several horizontal pulley assemblies 54 and fixed pulley assembly 52 in sequence. The power clamp 7 can use a jack, an oil pump and other tools. In the case of anchoring with pile foundation, if there is a support pile 9 in the foundation 8 and the support pile 9 is located at a position close to the arrangement of the retaining wall 1, the second end of the second prestressed anchor cable 51 is anchored on the support pile 9 after bypassing the corresponding vertical pulley assembly 53, several horizontal pulley assemblies 54 and fixed pulley assembly 52 in sequence. When anchoring in a pileless foundation, such as a shallow foundation on a natural foundation 8 or a bearing layer of the foundation 8 with a high bearing capacity and large rigidity, the second end of the second prestressed anchor cable 51 passes through the corresponding vertical pulley assembly 53, several horizontal pulley assemblies 54 and a fixed pulley assembly 52 in sequence and is anchored in the foundation 8.

[0042] In one embodiment, the fixed pulley assembly 52, the vertical pulley assembly 53 and the horizontal pulley assembly 54 all include a steel plate 55 for mounting on the wall panel 12 or the bottom plate 11 and a pulley 56 disposed on the steel plate 55. The steel plate 55 can expand the stress contact, thereby preventing the bottom plate 11 or the wall panel 12 from being subjected to a large stress at a local position, and further reducing the risk of cracking, damage or collapse of the bottom plate 11 or the wall panel 12. In one embodiment, the number of the vertical pulley assemblies 53 is the same as the number of the reserved holes 31 on the end buttress 4 and corresponds to each other, and the height of the vertical pulley assemblies 53 is the same as the corresponding reserved holes 31.

[0043] In order to prevent the first prestressed anchor cable 2 and the second prestressed anchor cable 51 from being corroded, in one embodiment, an anti-corrosion coating is applied to the outer sides of the first prestressed anchor cable 2 and the second prestressed anchor cable 51. This arrangement can increase the anti-corrosion function of the first prestressed anchor cable 2 and the second prestressed anchor cable 51, and the anti-corrosion coating can be made of butter.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] (1) A plurality of first prestressed anchor cables 2 are added to the retaining wall 1, so that the retaining wall 1 can obtain greater rigidity. After the backfill is accumulated, the first prestressed anchor cables 2 can offset most of the soil pressure, so that the retaining wall 1 with the original rigidity can accommodate an increased volume of backfill, and the retaining wall 1 can be heightened and lengthened on the basis of maintaining a relatively small thickness of the retaining wall 1;

[0046] (2) When the deformation of a part of the retaining wall 1 is too large during the filling process, the tension of the first prestressed anchor cable 2 can be quickly adjusted to control the stress and deformation of the retaining wall 1, reduce the risk of cracking, damage or collapse of the retaining wall 1, reinforce the retaining wall 1 and unload the earth pressure on the retaining wall 1 at a lower economic and space cost, extend the service life of the retaining wall 1, and ensure the safety of the surrounding environment;

[0047] (3) The present invention has good mechanical properties, is safe and reliable, and can be widely used.

[0048] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A retaining wall reinforcement structure for large volume fill, It is characterized in that It comprises a retaining wall and a first prestressed anchor cable, wherein the retaining wall comprises a bottom plate, a wall panel arranged on the bottom plate, and a plurality of buttresses arranged between the bottom plate and the wall panel, wherein the plurality of buttresses are arranged at intervals; A plurality of reserved holes are provided at intervals along the vertical direction at one end of the buttress away from the wall panel, and two reserved holes at the same height on two adjacent buttresses form a group of reserved holes; A plurality of communication channels are provided in the wall panel, the number of the communication channels is the same as that of the reserved hole groups and they correspond one to one, the communication channels are located between two reserved holes of the corresponding reserved hole group, and the two ends of the communication channels are respectively connected with the two reserved holes of the corresponding reserved hole group to form an anchor cable channel; The number of the first prestressed anchor cables and the anchor cable channels are the same and correspond one to one, one end of the first prestressed anchor cable is locked by a first locking member, and the other end of the first prestressed anchor cable passes through the corresponding anchor cable channel and is locked by a second locking member; The two buttresses located at the outermost sides of the plurality of buttresses are end buttresses, and the two end buttresses are respectively flush with the two ends of the wall panel and the two ends of the bottom plate. Stress conduction devices for unloading the soil pressure on the end buttresses are respectively provided between one end of the bottom plate and one end of the wall panel and between the other end of the bottom plate and the other end of the wall panel; The stress conduction device includes a second prestressed anchor cable, a fixed pulley assembly, a plurality of vertical pulley assemblies and a plurality of horizontal pulley assemblies, wherein the fixed pulley assembly is located below the wall panel and is arranged on the bottom plate, a plurality of the vertical pulley assemblies are located above the fixed pulley assembly and are arranged on the wall panel, a plurality of the vertical pulley assemblies are arranged at intervals in the vertical direction, a plurality of the horizontal pulley assemblies are located on one side of the fixed pulley assembly and are arranged on the bottom plate, and a plurality of the horizontal pulley assemblies are arranged at intervals in the horizontal direction; the number of the second prestressed anchor cables is the same as that of the vertical pulley assemblies and corresponds one to one, a first end of the second prestressed anchor cable is fixed on the fixed pulley assembly, a second end of the second prestressed anchor cable is fixedly arranged after successively passing through the corresponding vertical pulley assembly, a plurality of horizontal pulley assemblies and the fixed pulley assembly, and the second prestressed anchor cable contacts the end buttress.

2. The large-volume earthfill retaining wall reinforcement structure according to claim 1, It is characterized in that The fixed pulley assembly, the vertical pulley assembly and the horizontal pulley assembly all include steel plates for being mounted on the wall panel and the bottom plate and pulleys arranged on the steel plates.

3. The large-volume earthfill retaining wall reinforcement structure according to claim 1, It is characterized in that A PVC tube is provided in the anchor cable channel, and the first prestressed anchor cable passes through the PVC tube corresponding to the anchor cable channel.

4. The retaining wall reinforcement structure for large volume fill according to claim 1, It is characterized in that The buttress includes an upper part and a lower part, the reserved hole located in the upper part is a first reserved hole, the reserved hole located in the lower part is a second reserved hole, and the distance between two adjacent second reserved holes on the buttress is smaller than the distance between two adjacent first reserved holes.

5. The large-volume earthfill retaining wall reinforcement structure according to claim 1, It is characterized in that The outer sides of the first prestressed anchor cable and the second prestressed anchor cable are coated with an anti-corrosion coating.

6. The large-volume earthfill retaining wall reinforcement structure according to claim 1, It is characterized in that The buttress is in the shape of a right-angled trapezoid, the lower bottom edge of the buttress is connected to the bottom plate, and the high side of the buttress is connected to the wall panel.

7. The large-volume earthfill retaining wall reinforcement structure according to claim 1, It is characterized in that The number of the vertical pulley assemblies is the same as the number of the reserved holes on the buttress.

8. The large-volume earthfill retaining wall reinforcement structure according to claim 1, It is characterized in that The second end of the second prestressed anchor cable is anchored on a power clamp, a foundation or a supporting pile.

Images