Temporary retaining wall and laying method thereof

Abstract

The invention relates to the field of retaining walls, and particularly discloses a temporary retaining wall and a laying method thereof.The temporary retaining wall comprises a plurality of unit walls distributed at equal intervals, each unit wall comprises a bottom plate and two vertical rods, two first hinge seats are fixedly arranged on the upper end face of each bottom plate, and the lower ends of the two vertical rods are rotationally connected to the two first hinge seats correspondingly; a plurality of detachable baffles are installed between every two adjacent vertical rods, the vertical rods are rotationally connected to the bottom plate, so that the vertical rods and the bottom plate can be folded, transportation is convenient, the vertical rods are supported through the supporting rods after rotating to be perpendicular to the bottom plate, the baffles are detachably installed between the two vertical rods, and assembly of the unit wall is facilitated; therefore, the laying speed of the temporary retaining wall can be increased, the construction efficiency of a water conservancy project is improved, meanwhile, after soil and stones are stabilized, the temporary retaining wall can be rapidly dismantled, the retaining wall poured with cement is built, the temporary retaining wall can be recycled, and the blocking effect on the soil and stones can be improved through a traditional retaining wall.

Description

Technical Field

[0001] The invention relates to the field of retaining walls, in particular to a temporary retaining wall and a laying method thereof. Background Art

[0002] A retaining wall refers to a structure that supports roadbed fill or hillside soil to prevent the fill or soil from deforming and becoming unstable. It is mostly made of poured concrete. When pouring a retaining wall, it is necessary to first pour the retaining wall base, and then build a formwork on the base. After tying the steel frame, concrete is poured to form the retaining wall. It takes a long time for the concrete to solidify and harden, which makes the entire pouring and construction process time-consuming.

[0003] In the construction of water conservancy projects, water conservancy construction often faces problems such as undulating terrain and soft soil. Retaining walls can prevent soil sliding and collapse during excavation or filling, and ensure construction safety. Traditional gravity or buttress retaining walls mostly rely on cast-in-place concrete or complex mechanical anchoring, which requires the coordination of multiple processes and is time-consuming and labor-intensive. Only after the construction of the retaining wall is completed can subsequent water conservancy construction be carried out. Moreover, traditional retaining walls are mostly integral structures, and the length cannot be flexibly adjusted, making it difficult to adapt to the needs of different construction scenarios.

[0004] Therefore, it is necessary to design a temporary retaining wall and a laying method thereof to speed up the construction of the retaining wall, thereby improving the efficiency of water conservancy project construction. Summary of the invention

[0005] The object of the present invention is to provide a temporary retaining wall and a laying method thereof, so as to overcome the above-mentioned defects in the prior art.

[0006] A temporary retaining wall and a laying method thereof according to the present invention comprise a plurality of equally spaced unit walls, wherein the unit wall comprises a base plate and two vertical rods, the upper end surface of the base plate being fixedly provided with two first hinge seats, the lower ends of the two vertical rods being rotatably connected to the two first hinge seats respectively, a plurality of detachable baffles being installed between two adjacent vertical rods, the plurality of baffles being evenly arranged along the length direction of the vertical rods, two adjacent baffles being abutted against each other, the vertical rods and the base plate being connected via a supporting rod, the supporting rod being inclinedly arranged, the upper end surface of the base plate being fixedly provided with a first vertical plate between the two vertical rods, the lowermost baffle being abutted against the upper end surface of the first vertical plate, a second vertical plate being fixed between two adjacent base plates, the upper end surface of the base plate being provided with two through grooves penetrating along the thickness thereof, the upper end surface of the base plate being fixedly provided with a traction column, and a base being detachably connected to the lower side of the unit wall; The base includes a horizontal base and a vertical base, the horizontal base and the vertical base form a "T" shape, the horizontal base and the vertical base are formed by cement casting, a plurality of threaded sleeves arranged in pairs are fixed in the horizontal base, the threaded sleeves are arranged correspondingly to the through grooves, the bottom plate is fixed to the horizontal base by the threaded cooperation between the bolts and the threaded sleeves, and the detachable connection between the unit wall and the base enables the unit wall to be removed and a traditional retaining wall to be cast on the base after the soil and stone of the water conservancy project construction site are stabilized to achieve long-term protection of the soil, and the replaced unit wall can be recycled; The base may be prefabricated, thereby further speeding up the construction of the temporary retaining wall.

[0007] Through the above technical solution, the vertical rod is rotatably connected to the base plate, so that the vertical rod and the base plate can be folded in half, which is convenient for transportation. After the vertical rod is rotated to be perpendicular to the base plate, it is supported by the support rod. The baffle is detachably installed between the two vertical rods, which is convenient for the assembly of the unit wall, thereby helping to speed up the laying of temporary retaining walls, reduce the waiting time for traditional retaining walls to solidify and dry, and thus speed up the construction steps of water conservancy projects.

[0008] Furthermore, the vertical rod is made of C-shaped steel, and both side walls of the vertical rod are provided with bayonet holes evenly distributed along its length direction, and the bayonet holes are composed of a horizontal bayonet slot arranged horizontally and a vertical bayonet slot arranged vertically and are in an "L" shape, and the horizontal bayonet slot is connected to the vertical bayonet slot, and two bayonet pins are fixedly provided on the end surface of one side of the baffle close to the vertical rod, and a bayonet joint is fixedly provided on the end of the bayonet pin away from the baffle, and the bayonet pin can slide along the horizontal bayonet slot to be inserted into the vertical bayonet slot.

[0009] Through the above technical solution, the locking pin is locked in the vertical slot, which can ensure that the baffle is fixed between the two vertical rods.

[0010] Furthermore, a cavity recessed backwards is provided on the front face of the baffle, a plurality of reinforcing strips equidistantly distributed vertically are fixed between the left and right side walls of the baffle, and the rear face of the baffle is in contact with soil and rocks.

[0011] Through the above technical solution, the weight of the baffle can be reduced, and the provision of the reinforcement strip ensures the bending strength of the baffle.

[0012] Furthermore, a mosaic plate is fixedly provided on the rear end face of the baffle, the size of the mosaic plate is consistent with the size of the cavity in the baffle, and the distance between the front end face of the reinforcing strip and the front end face of the baffle is consistent with the thickness of the mosaic plate.

[0013] Through the above technical solution, when multiple baffles are stacked, the reinforcing strips can be embedded in the cavities of the baffles, so that the multiple baffles remain stable when stacked and are easy to transport and carry.

[0014] Furthermore, the support rod includes a sleeve, a first support rod and a second support rod, a second hinge seat is fixed on the vertical rod, the upper end of the first support rod is rotatably connected to the second hinge seat, two third hinge seats are fixed on the upper end surface of the base plate and are respectively located in front of the two vertical rods, the lower end of the second support rod is rotatably connected to the third hinge seat, a limiting ring is fixed on the outer periphery of the second support rod, the sleeve is slidably connected to the outer periphery of the first support rod, and when the lower end of the sleeve abuts against the limiting ring, the sleeve is respectively sleeved on the outer peripheries of the first support rod and the second support rod.

[0015] Through the above technical solution, when the sleeve is respectively sleeved on the outer periphery of the first support rod and the second support rod, it ensures that the axes of the first support rod and the second support rod coincide with each other, thereby ensuring the supporting effect of the support rod. At the same time, when the sleeve is completely located on the outer periphery of the first support rod, the first support rod and the second support rod can rotate separately.

[0016] The second end of the second support rod is provided with a first engaging groove which penetrates radially, and the penetration direction of the first engaging groove is perpendicular to the rotation direction of the first support rod. The lower end of the first engaging groove is opened, and the upper end of the second supporting rod is opened. The penetration direction of the second engaging groove is perpendicular to the rotation direction of the second supporting rod. When the axes of the first supporting rod and the second supporting rod coincide, a gap is formed between the lower end of the first supporting rod and the upper end of the second supporting rod, and a circular support block which is respectively abutted against the first supporting rod and the second supporting rod is provided in the gap. A side surface of the circular support block close to the first supporting rod and the second supporting rod is fixed with a strip support block, and the two strip support blocks are respectively embedded in the first engaging groove and the second engaging groove. The circular support block, the first supporting rod, the second supporting rod and the two strip support blocks form a complete cylinder, and the inner wall of the sleeve abuts against the outer circumference of the cylinder.

[0017] Through the above technical solution, the interval between the first support rod and the second support rod ensures that when the vertical rod is perpendicular to the base plate, the first support rod and the second support rod can still rotate freely, thereby facilitating the folding between the vertical rod and the base plate. The circular support block is embedded in the interval between the first support rod and the second support rod to ensure the supporting effect of the first support rod and the second support rod. The strip support block is embedded in the first fitting groove and the second fitting groove to increase the bending strength of the connection position between the first support rod and the second support rod.

[0018] Furthermore, a limiting groove is provided on the peripheral wall of the sleeve and passes through the peripheral wall. The limiting groove is parallel to the axial direction of the first support rod. A limiting pin is fixed on the first support rod. The limiting pin slides in the limiting groove. The length of the limiting groove is greater than the distance between the bottom wall of the first engaging groove and the limiting ring.

[0019] Through the above technical solution, the setting of the limiting pin and the limiting groove, the sleeve can be limited to the outer periphery of the first support rod.

[0020] Furthermore, a card plate is fixedly provided on the lower end surface of the second vertical plate, the height of the card plate is consistent with the thickness of the bottom plate, the width of the second vertical plate is greater than the width of the card plate, and positioning grooves are provided on both side end surfaces of the bottom plate perpendicular to the first vertical plate, and both ends of the card plate can be respectively embedded in the positioning grooves, and both side edges of the second vertical plate are respectively abutted against two adjacent vertical rods, a support plate is fixedly provided on the front end surface of the card plate, and a side plate is fixedly provided on one end surface of the support plate close to the bottom plate, and the two side plates are respectively abutted against two adjacent bottom plates.

[0021] Through the above technical solution, the second vertical plate is used to block soil and rocks to prevent soil and rocks from leaking from between the two bottom plates, and the support plate and the side plate are arranged to ensure stability between the two bottom plates.

[0022] The present invention also provides a method for laying a temporary retaining wall, which is used for laying the temporary retaining wall described above, and comprises the following steps: S1. On-site investigation: Conduct detailed investigation on soil type, groundwater level, topography and other factors in the construction area of ​​the water conservancy project. According to the investigation results, determine the width and thickness of the horizontal base and the height and width of the vertical base, and determine the selection of materials to be used; S2. Prepare the construction site, clean the construction area, remove all obstacles and vegetation, and compact the construction site using a tamping machine; S3, excavation and treatment of foundation pit: according to the size of the foundation determined in S, the foundation pit is excavated in the compacted site, and the excavated foundation pit is compacted, and then a layer of crushed stone is laid on the bottom wall of the foundation pit; S4, pouring the base, installing the pouring formwork in the prepared foundation pit, tying the steel skeleton in the formwork, fixing the corresponding threaded sleeve on the steel skeleton according to the distribution of the through grooves on the temporary retaining wall, and then pouring cement in the formwork until the cement is flush with the upper end of the threaded sleeve, and the base is formed after the cement solidifies; S5, installation of the unit wall, rotating the vertical rod on the bottom plate to a vertical state, and then rotating the first support rod and the second support rod until the two are aligned, inserting the circular support block into the gap between the first support rod and the second support rod, and respectively embedding the two strip support blocks into the first fitting groove and the second fitting groove, and then the sleeve slides downward along the first support rod to be sleeved on the outer periphery of the second support rod, and the lower end of the sleeve abuts against the limit ring, thereby ensuring the supporting strength of the support rod, after aligning the through groove with the threaded sleeve, the bolt is passed through the through groove and screwed into the threaded sleeve, and the upper end of the bolt abuts against the upper end surface of the bottom plate, thereby fixing the bottom plate on the base, and the unit walls are evenly distributed along the length direction of the base, and the spacing between two adjacent unit walls is consistent with the width of the baffle; S6. Laying of temporary retaining wall. Install the second vertical plate between two adjacent bottom plates. Insert the two ends of the card plate into two adjacent positioning grooves respectively. Insert the connecting pins on both sides of the multiple baffles into the slots on the two adjacent vertical rods respectively. Slide the connecting pins along the horizontal slots until they are inserted into the vertical slots. Install the multiple baffles one by one upward along the vertical rods. The lowermost baffle among the multiple baffles on the bottom plate abuts against the upper end surface of the first vertical plate. The lowermost baffle among the multiple baffles between the two bottom plates abuts against the upper end surface of the second vertical plate.

[0023] Through the above technical scheme, only the base needs to be cast, and the temporary retaining wall can be quickly built on the base after the base is dry, thereby shortening the construction time of the retaining wall. Moreover, after the soil and rock deposition is stable, the temporary retaining wall can be dismantled and the traditional retaining wall can be cast on the base, so that the temporary retaining wall can be recycled, and the traditional retaining wall can also increase the blocking effect on the soil and rock, so that in the early stage of water conservancy project construction, the construction of the retaining wall can be accelerated, and the waiting time for the traditional retaining wall to solidify and dry can be reduced. After the temporary retaining wall is laid, the water conservancy project construction can be carried out, thereby speeding up the construction efficiency of the water conservancy project. After the water conservancy process construction is completed, the temporary retaining wall can also be replaced with a traditional retaining wall, thereby increasing the protection effect.

[0024] The beneficial effects of the present invention are: 1. The vertical rod is rotatably connected to the bottom plate so that the vertical rod and the bottom plate can be folded in half for easy transportation. After the vertical rod is rotated to be perpendicular to the bottom plate, it is supported by the support rod. The baffle can be detachably installed between the two vertical rods to facilitate the assembly of the unit wall, which is conducive to speeding up the laying of the temporary retaining wall and thus speeding up the construction efficiency of the water conservancy project.

[0025] 2. After the soil and rock are stabilized, the base and the temporary retaining wall are detachably connected, which enables the temporary retaining wall to be quickly dismantled and a retaining wall cast with cement to be built, so that the temporary retaining wall can be recycled, and the traditional retaining wall can also increase the blocking effect on the soil and rock, so that in the early stage of the water conservancy project construction, the construction of the retaining wall can be accelerated, thereby speeding up the construction of the water conservancy project. After the construction of the water conservancy project is completed, the temporary retaining wall is replaced with a traditional retaining wall, which can also increase the protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 is an exploded view of the present invention; Figure 3 is a schematic structural diagram of the second vertical plate in the present invention; Figure 4 is an exploded view of a unit wall in the present invention; Figure 5 The present invention Figure 4The enlarged schematic diagram at A in the middle; Figure 6 The present invention Figure 4 The enlarged schematic diagram of point B in the middle; Figure 7 It is a schematic diagram of the folded state of the unit wall in the present invention; Figure 8 is a bottom view of the unit wall in the present invention in a folded state; Fig. 9 It is a structural schematic diagram of the baffle in the present invention; Fig.10 It is a schematic diagram of the structure of the interlocking plate in the present invention; Fig.11 It is a schematic diagram of a stacked state of multiple baffles in the present invention; Fig.12 is a cross-sectional view of a plurality of baffles in a stacked state in the present invention; Fig.13 It is a structural schematic diagram of the prefabricated base in the present invention.

[0027] In the figure: 1. Vertical seat; 2. Horizontal seat; 3. Threaded sleeve; 4. Bolt; 10. Bottom plate; 101. Through slot; 102. Positioning slot; 11. Vertical rod; 111. Horizontal slot; 112. Vertical slot; 12. Towing column; 13. First hinged seat; 14. First vertical plate; 20. Sleeve; 201. Limiting slot; 21. First support rod; 211. First interlocking slot; 22. Second support rod; 221. Second interlocking slot; 23. Limiting pin; 24. Limiting ring; 25. Circular support block; 26. Strip support block; 27. Second hinged seat; 28. Third hinged seat; 30. Baffle; 31. Reinforcement strip; 32. Card joint; 33. Card pin; 34. Interlocking plate; 40. Support plate; 41. Side plate; 42. Card plate; 43. Second vertical plate. DETAILED DESCRIPTION

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of simplifying the description of the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described in conjunction with the embodiments below. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention. As used herein, the terms up, down and left, right are not limited to their strict geometric definitions, but include reasonable and inconsistent tolerances for machining or human errors. The specific features of the temporary retaining wall and the laying method thereof are described in detail below: An embodiment of the present invention: Reference Figure 1-Figure 12 The present invention provides a temporary retaining wall, comprising a plurality of unit walls distributed at equal intervals, wherein the unit wall comprises a bottom plate 10 and two vertical rods 11, wherein two first hinge seats 13 are fixedly arranged on the upper end surface of the bottom plate 10, wherein the lower ends of the two vertical rods 11 are rotatably connected to the two first hinge seats 13 respectively, wherein the front corner of the lower end of the vertical rod 11 is a quarter arc angle, wherein the center of the arc angle coincides with the rotation center of the vertical rod 11, wherein a plurality of detachable baffles 30 are installed between two adjacent vertical rods 11, wherein the plurality of baffles 30 are evenly arranged along the length direction of the vertical rod 11, and wherein the two adjacent baffles 30 abut against each other, The vertical rod 11 is connected to the bottom plate 10 by a support rod, which is tilted. A first vertical plate 14 located between the two vertical rods 11 is fixed on the upper end surface of the bottom plate 10. The lowermost baffle 30 abuts against the upper end surface of the first vertical plate 14. A second vertical plate 43 is fixed between two adjacent bottom plates 10. Two through grooves 101 are provided on the upper end surface of the bottom plate 10 along its thickness. A traction column 12 is fixed on the upper end surface of the bottom plate 10. When dismantling the temporary retaining wall, the bottom plate 10 can be pulled away from the installation position by hanging it on the traction column 12 through a pull rope, and a winch can be used to pull the bottom plate 10 away from the installation position. The lower side of the unit wall is detachably connected to a base. The base includes a horizontal base 2 and a vertical base 1. The horizontal base 2 and the vertical base 1 form a "T" shape. The horizontal base 2 and the vertical base 1 are formed by cement casting. A plurality of threaded sleeves 3 arranged in pairs are fixed in the horizontal base 2. The threaded sleeves 3 are arranged correspondingly to the through grooves 101. The bottom plate 10 is fixed to the horizontal base 2 by the threaded cooperation between the bolts 4 and the threaded sleeves 3. The detachable connection between the unit wall and the base enables the unit wall to be removed and a traditional retaining wall to be cast on the base after the soil and stone at the construction site of the water conservancy project are stabilized, so as to realize long-term protection of the soil, and the replaced unit wall can be recycled. The base can be prefabricated, further speeding up the construction of the temporary retaining wall.

[0030] Reference Figure 4 , Figure 5The vertical rod 11 is made of C-shaped steel, and both side walls of the vertical rod 11 are provided with bayonet holes evenly distributed along its length direction. The bayonet holes are composed of a horizontal bayonet slot 111 and a vertical bayonet slot 112 arranged horizontally and are "L"-shaped. The horizontal bayonet slot 111 is connected to the vertical bayonet slot 112. Two bayonet pins 33 are fixedly provided on the end surface of one side of the baffle 30 close to the vertical rod 11, and a bayonet joint 32 is fixedly provided on the end of the bayonet pin 33 away from the baffle 30. The bayonet pin 33 can slide along the horizontal bayonet slot 111 to be inserted into the vertical bayonet slot 112. The front end of the vertical rod 11 is flared to facilitate the bayonet pin 33 to be inserted into the horizontal bayonet slot 111.

[0031] Reference Fig. 9 , Fig.10 A cavity recessed backward is provided on the front end face of the baffle 30, and a plurality of reinforcing strips 31 equidistantly distributed vertically are fixedly provided between the left and right side walls of the baffle 30. The rear end face of the baffle 30 abuts against the soil and rocks, and a mosaic plate 34 is fixedly provided on the rear end face of the baffle 30. The size of the mosaic plate 34 is consistent with the size of the cavity in the baffle 30, and the distance between the front end face of the reinforcing strip 31 and the front end face of the baffle 30 is consistent with the thickness of the mosaic plate 34.

[0032] Reference Figure 4-Figure 6The support rod includes a sleeve 20, a first support rod 21 and a second support rod 22. A second hinge seat 27 is fixed on the vertical rod 11. The upper end of the first support rod 21 is rotatably connected to the second hinge seat 27. Two third hinge seats 28 are fixed on the upper end surface of the bottom plate 10 and are respectively located in front of the two vertical rods 11. The lower end of the second support rod 22 is rotatably connected to the third hinge seat 28. A limiting ring 24 is fixed on the outer periphery of the second support rod 22. The sleeve 20 is slidably connected to the outer periphery of the first support rod 21. When the lower end of the sleeve 20 abuts against the limiting ring 24, The sleeve 20 is respectively sleeved on the outer circumference of the first support rod 21 and the second support rod 22. When the vertical rod 11 rotates to be perpendicular to the bottom plate 10, the lower end surface of the vertical rod 11 abuts against the upper end surface of the bottom plate 10. The lower end of the first support rod 21 is provided with a first fitting groove 211 penetrating in the radial direction. The penetrating direction of the first fitting groove 211 is perpendicular to the rotation direction of the first support rod 21. The lower end of the first fitting groove 211 is open. The upper end of the second support rod 22 is provided with a second fitting groove 221 penetrating in the radial direction. The upper end of the second fitting groove 221 is open. The penetration direction of the second interlocking groove 221 is perpendicular to the rotation direction of the second support rod 22. When the axes of the first support rod 21 and the second support rod 22 coincide, a gap is formed between the lower end of the first support rod 21 and the upper end of the second support rod 22. A circular support block 25 is provided in the gap to abut against the first support rod 21 and the second support rod 22 respectively. A strip support block 26 is fixed on one side of the circular support block 25 close to the first support rod 21 and the second support rod 22. The two strip support blocks 26 are respectively interlocked in the first interlocking groove 211 and the second interlocking groove 221, the circular support block 25, the first support rod 21, the second support rod 22 and the two strip support blocks 26 form a complete cylinder, the inner wall of the sleeve 20 abuts against the outer periphery of the cylinder, and a limiting groove 201 penetrating the peripheral wall of the sleeve 20 is opened, and the limiting groove 201 is parallel to the axial direction of the first support rod 21. A limiting pin 23 is fixed on the first support rod 21, and the limiting pin 23 slides in the limiting groove 201. The length of the limiting groove 201 is greater than the distance between the bottom wall of the first interlocking groove 211 and the limiting ring 24.

[0033] Reference Figure 3 A card plate 42 is fixedly provided on the lower end surface of the second vertical plate 43, and the height of the card plate 42 is consistent with the thickness of the bottom plate 10. The width of the second vertical plate 43 is greater than the width of the card plate 42. Positioning grooves 102 are provided on both side end surfaces of the bottom plate 10 perpendicular to the first vertical plate 14. Both ends of the card plate 42 can be respectively embedded in the positioning grooves 102. The two side edges of the second vertical plate 43 are respectively abutted against the two adjacent vertical rods 11. A support plate 40 is fixedly provided on the front end surface of the card plate 42. A side plate 41 is fixedly provided on the end surface of the support plate 40 close to the bottom plate 10. The two side plates 41 are respectively abutted against the two adjacent bottom plates 10.

[0034] Reference Figure 7 , Figure 8When the unit wall is transported, the vertical rod 11 and the bottom plate 10 are in a folded state, the vertical rod 11 abuts against the upper end surface of the bottom plate 10, the sleeve 20 is completely sleeved on the first support rod 21, the first support rod 21 is stored in the C-shaped vertical rod 11, the second support rod 22 is folded on the bottom plate 10, the vertical rod 11 covers the second support rod 22, the second support rod 22 is also stored in the vertical rod 11, and the circular support block 25 is stored in the through groove 101.

[0035] Reference Fig.11 , Fig.12 When the baffles 30 are transported, the multiple baffles 30 are in a stacked state, and the interlocking plate 34 is embedded in the cavity of another baffle 30, thereby ensuring that the multiple baffles 30 maintain the stability of the stacked state during transportation.

[0036] Reference Figure 2 The present invention also provides a base for fixing and installing any of the above-mentioned temporary retaining walls, including a horizontal seat 2 and a vertical seat 1. The horizontal seat 2 and the vertical seat 1 form a "T" shape. The horizontal seat 2 and the vertical seat 1 are formed by pouring cement. A plurality of threaded sleeves 3 arranged in pairs are fixed in the horizontal seat 2. The threaded sleeves 3 are arranged corresponding to the through grooves 101. The bottom plate 10 is fixed to the horizontal seat 2 by the threaded cooperation between the bolts 4 and the threaded sleeves 3. The through groove 101 is in the shape of a long strip. The length of the through groove 101 is greater than the diameter of the bolt 4, and the width of the through groove 101 is consistent with the bolt 4.

[0037] The present invention also provides a method for laying a temporary retaining wall, which is used for laying the above-mentioned base and installing the temporary retaining wall on the base, comprising the following steps: S1. On-site investigation: Conduct detailed investigation on soil type, groundwater level, topography and other factors in the construction area of ​​the water conservancy project. According to the investigation results, determine the width and thickness of the horizontal seat 2 and the height and width of the vertical seat 1 of the base, and determine the selection of materials used; S2. Prepare the construction site, clean the construction area, remove all obstacles and vegetation, and compact the construction site using a tamping machine; S3, excavation and treatment of foundation pit, according to the size of the foundation determined in S1, excavation of the foundation pit is carried out in the compacted site, and the excavated foundation pit is compacted, and then a layer of crushed stone is laid on the bottom wall of the foundation pit; S4, pouring the base, installing the pouring template in the processed foundation pit, tying the steel skeleton in the template, and fixing the corresponding threaded sleeve 3 on the steel skeleton by welding according to the distribution of the through grooves 101 on the temporary retaining wall. In the process of fixing the threaded sleeve 3, it is necessary to set a reference line to ensure the positioning effect of the threaded sleeve 3, and then pour cement in the template until the cement is flush with the upper end of the threaded sleeve 3. During the pouring process, it is necessary to keep the threaded sleeve 3 in a vertical state. After the cement solidifies, the base is formed. Compared with the traditional retaining wall, the temporary retaining wall only needs to cast the base, so the construction steps are greatly reduced, thereby greatly improving the construction efficiency of the retaining wall; Reference Fig.13 The base can also be formed by prefabrication. The width of the prefabricated base is equal to the width of the bottom plate 10 plus the width of the support plate 40. The two threaded sleeves 3 are distributed in the middle position of the prefabricated base. The size of the prefabricated base is smaller than the size of the foundation pit. The prefabricated base can be directly placed in the foundation pit excavated by S3. Cement is poured in the gap between the prefabricated base and the foundation pit to fix the prefabricated base. Since the amount of cement poured in the gap is small, the cement solidifies quickly, thereby further accelerating the construction of the temporary retaining wall.

[0038] S5, installation of unit wall, rotate the vertical rod 11 on the bottom plate 10 to a vertical state, and then rotate the first support rod 21 and the second support rod 22 until the two are aligned, insert the circular support block 25 into the gap between the first support rod 21 and the second support rod 22, and the two strip support blocks 26 are respectively embedded in the first fitting groove 211 and the second fitting groove 221, and then the sleeve 20 slides downward along the first support rod 21 to be sleeved on the outer periphery of the second support rod 22, and the lower end of the sleeve 20 abuts against the limit ring 24, thereby ensuring the supporting strength of the support rod, after aligning the through groove 101 with the threaded sleeve 3, the bolt 4 is passed through the through groove 101 and screwed into the threaded sleeve 3, and the upper end of the bolt abuts against the upper end surface of the bottom plate 10, thereby fixing the bottom plate 10 on the base, and the unit walls are evenly distributed along the length direction of the base, and the spacing between two adjacent unit walls is consistent with the width of the baffle 30; S6. Temporary retaining wall laying, the second vertical plate 43 is installed between two adjacent base plates 10, the two ends of the card plate 42 are respectively inserted into the two adjacent positioning grooves 102, the card pins 33 on both sides of the multiple baffles 30 are respectively inserted into the card slots on the two adjacent vertical rods 11, the card pins 33 slide along the horizontal card slot 111 until they are inserted into the vertical card slot 112, and the multiple baffles 30 are installed one by one upward along the vertical rod 11, the lowermost baffle 30 among the multiple baffles 30 located on the base plate 10 abuts against the upper end surface of the first vertical plate 14, and the lowermost baffle 30 among the multiple baffles 30 located between the two base plates 10 abuts against the upper end surface of the second vertical plate 43.

[0039] When the soil and rocks at the water conservancy construction site become compact and stable due to sedimentation or compaction by a tamping machine, the temporary retaining wall can be removed and then the traditional retaining wall can be cast and constructed, which specifically includes the following steps: SS1. Earth and rock survey: remove multiple baffles 30 on a certain unit wall from two vertical rods 11 one by one. Each time a baffle 30 is removed, it is necessary to observe whether earth and rocks fall from the two vertical rods 11. If no earth and rocks fall during the removal of the baffle 30 (a small amount of falling is a normal phenomenon), the unit wall removal operation can be carried out; SS2, the unit wall is removed, the bolt 4 is rotated to make the bolt 4 detach from the base, so that the corresponding bottom plate 10 can be detached from the base, the cable on the winch is hung on the traction column 12, the winch is started, and the bottom plate 10 is pulled away from the base; SS3, retaining wall casting. After every two unit walls are demolished, a traditional retaining wall template is built on the base of the vacated unit walls, and then cement is poured. After the cement is dry, the steps of SS1-SS3 are repeated. The temporary retaining wall can be replaced with a traditional retaining wall by repeating this process. In this way, the temporary retaining wall can provide timely and effective protection for unstable soil. At the same time, after being replaced with a traditional retaining wall, the soil can be protected for a long time, and the replaced temporary retaining wall can be recycled.

[0040] It will be clear to those skilled in the art that various modifications to the above embodiments may be made without departing from the overall spirit and concept of the present invention. All of these modifications fall within the scope of protection of the present invention. The protection scheme of the present invention shall be subject to the claims attached to the present invention.

Claims

1. A temporary retaining wall, characterized in that: The invention comprises a plurality of equidistantly distributed unit walls, wherein the unit walls comprise a bottom plate (10) and two vertical rods (11), wherein the upper end surface of the bottom plate (10) is fixedly provided with two first hinge seats (13), the lower ends of the two vertical rods (11) are rotatably connected to the two first hinge seats (13), and a plurality of detachable baffles (30) are installed between two adjacent vertical rods (11), wherein the plurality of baffles (30) are evenly arranged along the length direction of the vertical rods (11), and the adjacent two baffles (30) are mutually abutted, and the vertical rods (11) and the bottom plate (10) are fixedly provided with two first hinge seats (13), and the lower ends of the two vertical rods (11) are respectively rotatably connected to the two first hinge seats (13), and the plurality of detachable baffles (30) are installed between two adjacent vertical rods (11), and the plurality of baffles (30) are evenly arranged along the length direction of the vertical rods (11), and the adjacent two baffles (30) are mutually abutted, and the vertical rods (11) and the bottom plate (10) are fixedly connected to the bottom plate (10 ... connected to the vertical rods (11), and the plurality of baffles (30) are evenly connected to the vertical rods (11), and the plurality of baffles (30) are evenly connected to the vertical rods (11), and the plurality of baffles (30) are evenly connected to the vertical rods (11), and the plurality of baffles (30) are evenly connected to the The bottom plate (10) is connected by a support rod, the support rod is tilted, the upper end surface of the bottom plate (10) is fixedly provided with a first vertical plate (14) located between the two vertical rods (11), the lowermost baffle (30) is in contact with the upper end surface of the first vertical plate (14), a second vertical plate (43) is fixed between two adjacent bottom plates (10), the upper end surface of the bottom plate (10) is provided with two through grooves (101) penetrating along the thickness thereof, the upper end surface of the bottom plate (10) is fixedly provided with a traction column (12), and the lower side of the unit wall is detachably connected with a base; The base comprises a horizontal base (2) and a vertical base (1), the horizontal base (2) and the vertical base (1) forming a "T" shape, the horizontal base (2) and the vertical base (1) being formed by cement casting, a plurality of threaded sleeves (3) arranged in pairs are fixed in the horizontal base (2), the threaded sleeves (3) and the through grooves (101) being arranged correspondingly, the bottom plate (10) being fixed to the horizontal base (2) by threaded engagement between bolts (4) and the threaded sleeves (3), the detachable connection between the unit wall and the base enables the unit wall to be dismantled and a traditional retaining wall to be cast on the base after the soil and rock at the water conservancy project construction site is stabilized, thereby achieving long-term protection of the soil, and the replaced unit wall can be recycled; The base may be prefabricated, thereby further speeding up the construction of the temporary retaining wall.

2. A temporary retaining wall according to claim 1, characterized in that: The vertical rod (11) is made of C-shaped steel. Both side walls of the vertical rod (11) are provided with bayonet holes evenly distributed along the length direction thereof. The bayonet holes are composed of a horizontal bayonet slot (111) arranged horizontally and a vertical bayonet slot (112) arranged vertically and are in an "L" shape. The horizontal bayonet slot (111) is connected to the vertical bayonet slot (112). Two bayonet pins (33) are fixedly provided on an end surface of one side of the baffle plate (30) close to the vertical rod (11). A bayonet joint (32) is fixedly provided on one end of the bayonet pin (33) away from the baffle plate (30). The bayonet pin (33) can slide along the horizontal bayonet slot (111) until it is inserted into the vertical bayonet slot (112).

3. A temporary retaining wall according to claim 1, characterized in that: The front end surface of the baffle (30) is provided with a cavity recessed backwards, a plurality of reinforcement strips (31) equidistantly distributed vertically are fixedly provided between the left and right side walls of the baffle (30), and the rear end surface of the baffle (30) is in contact with soil and rocks.

4. A temporary retaining wall according to claim 3, characterized in that: A chimeric plate (34) is fixedly disposed on the rear end face of the baffle (30); the size of the chimeric plate (34) is consistent with the size of the cavity in the baffle (30); and the distance between the front end face of the reinforcing strip (31) and the front end face of the baffle (30) is consistent with the thickness of the chimeric plate (34).

5. A temporary retaining wall according to claim 1, characterized in that: The support rod comprises a sleeve (20), a first support rod (21) and a second support rod (22); a second hinge seat (27) is fixedly provided on the vertical rod (11); the upper end of the first support rod (21) is rotatably connected to the second hinge seat (27); two third hinge seats (28) respectively located in front of the two vertical rods (11) are fixedly provided on the upper end surface of the bottom plate (10); the lower end of the second support rod (22) is rotatably connected to the third hinge seat (28); a limiting ring (24) is fixedly provided on the outer periphery of the second support rod (22); the sleeve (20) is slidably connected to the outer periphery of the first support rod (21); when the lower end of the sleeve (20) abuts against the limiting ring (24), the sleeve (20) is respectively sleeved on the outer peripheries of the first support rod (21) and the second support rod (22).

6. A temporary retaining wall according to claim 5, characterized in that: When the vertical rod (11) is rotated to be perpendicular to the bottom plate (10), the lower end surface of the vertical rod (11) abuts against the upper end surface of the bottom plate (10); the lower end of the first support rod (21) is provided with a first interlocking groove (211) penetrating in the radial direction; the penetration direction of the first interlocking groove (211) is perpendicular to the rotation direction of the first support rod (21); the lower end of the first interlocking groove (211) is open; the upper end of the second support rod (22) is provided with a second interlocking groove (221) penetrating in the radial direction; the upper end of the second interlocking groove (221) is open; the penetration direction of the second interlocking groove (221) is perpendicular to the rotation direction of the second support rod (22); the axis of the first support rod (21) and the second support rod (22) overlap. When the first support rod (21) and the second support rod (22) are closed, a gap is formed between the lower end of the first support rod (21) and the upper end of the second support rod (22), and a circular support block (25) is arranged in the gap and abuts against the first support rod (21) and the second support rod (22) respectively. A strip support block (26) is fixedly arranged on a side of the circular support block (25) close to the first support rod (21) and the second support rod (22), and the two strip support blocks (26) are respectively embedded in the first embedding groove (211) and the second embedding groove (221). The circular support block (25), the first support rod (21), the second support rod (22) and the two strip support blocks (26) form a complete cylinder, and the inner wall of the sleeve (20) abuts against the outer circumference of the cylinder.

7. A temporary retaining wall according to claim 5, characterized in that: A limiting groove (201) penetrating the circumferential wall of the sleeve (20) is provided, the limiting groove (201) being parallel to the axial direction of the first support rod (21), a limiting pin (23) being fixed on the first support rod (21), the limiting pin (23) sliding in the limiting groove (201), the length of the limiting groove (201) being greater than the distance between the bottom wall of the first engaging groove (211) and the limiting ring (24).

8. A temporary retaining wall according to claim 1, characterized in that: A clamping plate (42) is fixedly provided on the lower end surface of the second vertical plate (43), the height of the clamping plate (42) is consistent with the thickness of the bottom plate (10), the width of the second vertical plate (43) is greater than the width of the clamping plate (42), both side end surfaces of the bottom plate (10) perpendicular to the first vertical plate (14) are provided with positioning grooves (102), both ends of the clamping plate (42) can be respectively embedded in the positioning grooves (102), both side edges of the second vertical plate (43) are respectively abutted against two adjacent vertical rods (11), a support plate (40) is fixedly provided on the front end surface of the clamping plate (42), a side plate (41) is fixedly provided on the side end surface of the support plate (40) close to the bottom plate (10), and the two side plates (41) are respectively abutted against two adjacent bottom plates (10).

9. A method for laying a temporary retaining wall, characterized in that: The method for laying a temporary retaining wall as claimed in any one of claims 1 to 8 comprises the following steps: S1. On-site investigation: Conduct a detailed investigation of the soil type, groundwater level, topography and other factors in the water conservancy project construction area. Based on the investigation results, determine the width and thickness of the horizontal base (2) and the height and width of the vertical base (1), and determine the selection of materials to be used; S2. Prepare the construction site, clean the construction area, remove all obstacles and vegetation, and compact the construction site using a tamping machine; S3, excavation and treatment of foundation pit, according to the size of the foundation determined in S1, excavation of the foundation pit is carried out in the compacted site, and the excavated foundation pit is compacted, and then a layer of crushed stone is laid on the bottom wall of the foundation pit; S4, pouring the base, installing a pouring template in the prepared foundation pit, tying a steel skeleton in the template, fixing the corresponding threaded sleeve (3) on the steel skeleton according to the distribution of the through grooves (101) on the temporary retaining wall, and then pouring cement in the template until the cement is flush with the upper end of the threaded sleeve (3), and the base is formed after the cement solidifies; S5, unit wall installation, rotate the vertical rod (11) on the bottom plate (10) to a vertical state, then rotate the first support rod (21) and the second support rod (22) until the two are aligned, insert the circular support block (25) into the gap between the first support rod (21) and the second support rod (22), and insert the two strip support blocks (26) into the first fitting groove (211) and the second fitting groove (221) respectively, and then slide the sleeve (20) downward along the first support rod (21) until it is sleeved on the second support rod (2 2) On the outer periphery, the lower end of the sleeve (20) abuts against the limiting ring (24), thereby ensuring the supporting strength of the support rod. After the through slot (101) is aligned with the threaded sleeve (3), the bolt (4) passes through the through slot (101) and is screwed into the threaded sleeve (3). The upper end of the bolt (4) abuts against the upper end surface of the bottom plate (10), thereby fixing the bottom plate (10) on the base. The unit walls are evenly spaced along the length direction of the base, and the spacing between two adjacent unit walls is consistent with the width of the baffle (30); S6. Laying the temporary retaining wall, installing the second vertical plate (43) between two adjacent bottom plates (10), respectively inserting the two ends of the clamping plate (42) into two adjacent positioning grooves (102), respectively inserting the clamping pins (33) on both sides of the plurality of baffles (30) into the clamping holes on two adjacent vertical rods (11), sliding the clamping pins (33) along the horizontal clamping groove (111) until they are clamped into the vertical clamping groove (112), and installing the plurality of baffles (30) one by one upward along the vertical rods (11), the lowermost baffle (30) among the plurality of baffles (30) located on the bottom plate (10) abutting against the upper end surface of the first vertical plate (14), and the lowermost baffle (30) among the plurality of baffles (30) located between the two bottom plates (10) abutting against the upper end surface of the second vertical plate (43).

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