Reinforced earth retaining wall pouring formwork and construction method

Abstract

The invention relates to the technical field of formwork pouring, and provides a reinforced earth retaining wall pouring formwork and a construction method.The reinforced earth retaining wall pouring formwork comprises a foundation project which comprises a triangular combined truss, a vertical truss, a panel foundation, a reinforced wrapping body and a concrete panel; panel templates are arranged between the triangular combined truss and the foundation project, a plurality of groups of panel templates are arranged, a plurality of panel templates are vertically arranged between each group of panel templates, the plurality of panel templates are integrally obliquely arranged towards the foundation project, the vertical truss is positioned on one side of the triangular combined truss, and the panel foundation is mounted on the foundation project. The reinforced wrapping body is arranged in the foundation project, the concrete panel is arranged between the panel formwork and the reinforced wrapping body, and through the technical scheme, the technical problem that in the prior art, when the panel is poured, due to the fact that the height of the panel is large, the formwork is displaced and deflected, and then the pouring quality is affected is solved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of formwork pouring, and specifically, to a formwork for reinforced earth retaining wall pouring and a construction method thereof. Background Art

[0002] A reinforced earth retaining wall is a flexible structure. In practical engineering applications, a reinforced earth retaining wall is an important manifestation of a reinforced earth structure, and a reinforced earth retaining wall project is also a main component of a reinforced earth project.

[0003] A reinforced earth retaining wall refers to a retaining structure that bears the lateral pressure of soil and is composed of fill soil, reinforcement materials, and panels, etc. It improves the deformation and engineering properties of the soil by means of the frictional force between the soil and the reinforcement to enhance the stability of the soil. The panel is an important component of the reinforced earth retaining wall structure. It is used to prevent the lateral spalling of the soil between two layers of reinforcement materials. The panel also plays an important role in the stability of the reinforced earth retaining wall structure. It forms a stable framework of the reinforced earth retaining wall structure in connection with the reinforcement materials, which can prevent the spalling, collapse of the backfill materials and erosion by the environment. Therefore, the pouring method of the panel is extremely important.

[0004] In the prior art, the current pouring method of the panel is mostly sectional pouring. This pouring method has a slow construction speed, a cumbersome formwork support process, and a poor overall performance of the formed panel. Moreover, during the pouring process after formwork support, due to the large height dimension of the panel, the lateral support stiffness of the formwork may be insufficient, so that under the influence of the pressure of the concrete during the pouring process, the formwork is displaced, resulting in flexural deformation of the formwork, which not only affects the pouring quality of the panel but also causes damage to the formwork. Summary of the Invention

[0005] To overcome the above defects, the present invention provides a formwork for reinforced earth retaining wall pouring and a construction method thereof, which are used to solve the technical problem in the prior art that during the pouring of the panel, due to the high height of the panel, the formwork is displaced and flexed, thereby affecting the pouring quality.

[0006] The technical solution of the present disclosure is as follows: A formwork for reinforced earth retaining wall pouring includes a foundation project, including a triangular combined truss. There is a panel formwork between the triangular combined truss and the foundation project. There are multiple groups of the panel formwork. A plurality of the panel formworks are vertically arranged between each group of the panel formworks for assembling according to retaining walls of different sizes. A plurality of the panel formworks are arranged obliquely towards the foundation project as a whole; a vertical truss. The vertical truss is embedded in the foundation project and is located on one side of the triangular combined truss; Panel foundation, the panel foundation is installed on the foundation engineering, and the panel foundation is arranged at the bottom of the panel formwork; Reinforced inclusion, the reinforced inclusion is arranged inside the foundation engineering, and the reinforced inclusion is located between the foundation engineering and the panel formwork; Concrete panel, the concrete panel is arranged between the panel formwork and the reinforced inclusion.

[0007] On the basis of the foregoing solution, the panel formwork includes horizontal I-beams, vertical I-beams and steel plates. The horizontal I-beams are fixedly installed on the upper and lower sides of the steel plate, and the vertical I-beams are fixedly installed on the left and right sides of the steel plate. The horizontal I-beams, the vertical I-beams and the steel plate are installed together by welding. Lap installation part, the lap installation part is installed between several vertically arranged panel formworks in each group, and is used to connect multiple vertically arranged panel formworks; Parallel installation part, the parallel installation part is arranged between each group of panel formworks, and is used to connect multiple groups of panel formworks together.

[0008] On the basis of the foregoing solution, a plurality of bolt holes are equidistantly opened on the horizontal I-beams and the vertical I-beams, and connecting bolts for connecting each panel formwork are arranged in the plurality of bolt holes.

[0009] On the basis of the foregoing solution, in order to improve the installation speed and stability between several panel formworks in each group, the lap installation part includes: Docking strip, the docking strip is fixedly installed on each horizontal I-beam, and a toothed protrusion for guiding is arranged on one side of each docking strip away from the horizontal I-beam; Lap frame, the lap frame is arranged between every two adjacent horizontal I-beams, and the downward sides of the lap frame are respectively adapted to the toothed structures on the docking strips; Positioning holes, a plurality of the positioning holes are equidistantly opened on the upper and lower sides of the lap frame, and the plurality of positioning holes correspond to the plurality of bolt holes on the horizontal I-beams one by one.

[0010] On the basis of the foregoing solution, in order to improve the installation speed and stability between each group of panel formworks, the parallel installation part includes: Vertical installation frame and vertical connection frame, the vertical installation frame and the vertical connection frame are arranged between each group of panel formworks, and the two sides of the vertical installation frame and the vertical connection frame are respectively adapted to a plurality of vertical I-beams; Mounting holes, a plurality of the mounting holes are equidistantly formed on both sides of the vertical mounting frame respectively, and the plurality of mounting holes correspond to the plurality of bolt holes of the plurality of vertical I-beams one by one.

[0011] On the basis of the foregoing solution, the triangular combined truss includes: A first connecting rod, a second connecting rod and a third connecting rod. The first connecting rod, the second connecting rod and the third connecting rod are horizontally arranged between each group of the formwork panels and the vertical truss. The first connecting rod, the second connecting rod and the third connecting rod are arranged equidistantly from top to bottom in sequence and are hinged to the formwork panel. A first support rod. The first support rod is obliquely arranged on the side of each group of the formwork panels. One end of the first support rod is hinged to the formwork panel, and the other end is hinged to the free end of the third connecting rod. A second support rod and a third support rod. The second support rod and the third support rod are arranged on one side of each group of the formwork panels. Both ends of the third support rod are respectively hinged to the first support rod, the second connecting rod, the formwork panel and the third connecting rod. The second support rod is respectively hinged to the first support rod, the third connecting rod, the second connecting rod and the formwork panel.

[0012] On the basis of the foregoing solution, the reinforced wrapper includes: Geotextile grid. A plurality of the geotextile grids are arranged inside the foundation project. Each geotextile grid is stacked vertically. The geotextile grid is a high-density polyethylene unidirectional tensile geotextile grid. Connecting parts. A plurality of the connecting parts are arranged between every two layers of the geotextile grids for connecting the formwork panels. On the basis of the foregoing solution, the concrete panel further includes lower hooked bars and upper hooked bars. A plurality of the upper hooked bars are arranged between every two layers of the geotextile grids. One side of each upper hooked bar is provided with the lower hooked bar. The lower hooked bar is installed between the formwork panel or the vertical tie rod through a connecting hole. Connecting bars. The connecting bars are arranged inside the space formed between the lower hooked bar and the upper hooked bar. Wherein, both ends of the connecting hole are arranged in a conical shape. Conical positioning blocks. The conical positioning blocks are fixedly installed on each lower hooked bar, and the conical positioning blocks are abutted against the side of the connecting hole close to the geotextile grid. Conical sliding blocks. The conical sliding blocks are slidably sleeved on each lower hooked bar, and the conical sliding blocks are abutted against the side of the connecting hole close to the formwork panel. Positioning bolts, and each end of the downward-hooked steel bars is provided with the positioning bolts for connecting the formwork of the panel or the vertical bracing frame.

[0013] On the basis of the foregoing solution, the connecting part includes: Connecting plates, and one end of each upward-hooked steel bar is fixedly installed with the connecting plates, and the connecting plates are laid flat on the geogrid; Rivets, and each connecting plate is provided with the rivets, and the rivets fix the connecting plates above the geogrid.

[0014] A construction method for a reinforced earth retaining wall, which uses the above-mentioned formwork for pouring a reinforced earth retaining wall, and includes the following steps: The first step, foundation construction, excavate the foundation soil and perform overall structural foundation treatment, and pour the panel foundation; The second step, construction of the reinforced enclosure, lay a layer of unidirectional tensile geogrid on the bottom layer, then bend and wrap the end of the unidirectional geogrid in the opposite direction and overlap it with the geogrid laid flat on the bottom layer, and then fill and compact the soil to reach the specified compaction degree; The third step, construction of the connecting pieces, lay a plurality of upward-hooked steel bars with the hooked parts exposed, and weld one end of the upward-hooked steel bars to the connecting plates and fix them with rivets; The fourth step, complete the construction of the reinforced enclosure, repeat the first step to the third step until the height required for laying is reached; The fifth step, install the truss, transport the triangular combined truss and the formwork of the panel to the construction position of the retaining wall, construct the vertical truss that needs to be embedded in the foundation to a certain depth, then lap the triangular combined truss, and connect one end of the triangular combined truss to the vertical truss; The sixth step, vertically assemble the formwork, install the steel plate, the horizontal I-beam and the vertical I-beam together by welding, and then, according to actual needs, assemble a plurality of formworks of the panel along the vertical direction, and connect them together by using connecting bolts through the setting of the lap frame and the docking strip. Repeat this step until the height of this group of formworks of the panel reaches the construction requirements; The seventh step, complete the formwork construction. After setting several groups of formworks of the panel, hoist several groups of formworks of the panel to the construction position. First, hoist and install a vertical bracing frame at the top between two adjacent formworks of the panel for installing the downward-hooked steel bars. The downward-hooked steel bars can also be connected to the formwork of the panel, and at the same time install the connecting bars in place. Then, install several groups of formworks in sequence, and then install the vertical installation frame, and connect the vertical installation frame and the formwork of the panel together by using connecting bolts; The eighth step, pour concrete, pour the concrete panel, and after pouring, remove the formwork and cure the concrete panel.

[0015] The beneficial effects of the embodiments of the present invention are: 1. In the present invention, downwardly hooked steel bars are provided inside the concrete panel and cooperate with upwardly hooked steel bars arranged between adjacent reinforced enclosures. The two are fixed by connecting bars. The cooperation of the three can not only provide tension for the panel formwork, but also serve as a part of the concrete panel to improve the compressive and shear resistance of the concrete panel.

[0016] 2. In the present invention, after each layer of geogrid is laid, backfilling and compaction are carried out, and then upwardly hooked steel bars are laid. One end of the upwardly hooked steel bar is welded to a horizontally arranged connecting plate, avoiding the premature excavation of grooves in each layer of backfill to fix the steel plate, ensuring the compaction degree of each layer of backfill, and improving the overall stability of the reinforced soil retaining wall.

[0017] 3. In the present invention, during the construction of a multi-level reinforced soil retaining wall, the end of the triangular combined constant truss of the second layer can be connected to the top of the panel formwork of the first layer. That is, when installing the three-legged combined truss for the second time, the panel formwork of the first layer acts as a vertical truss, thus making the construction more convenient and improving the overall adaptability and stability of the casting formwork.

[0018] 4. In the present invention, a vertical connecting frame is first hoisted and installed at the top between two adjacent panel formworks for installing downwardly hooked steel bars, and the connecting bars are installed in place synchronously until the installation of the formwork is completed. Then, a vertical installation frame is installed. After installation, the installation holes on both sides of the vertical installation frame correspond to the bolt holes on the corresponding several vertical I-beams, and the two are connected together by connecting bolts. During the pouring process, through the cooperation of the vertical connecting frame and the vertical installation frame, the phenomenon of formwork deflection during the pouring of a relatively high soil retaining wall is effectively reduced, and the overall stability is improved.

[0019] 5. In the present invention, concrete can be poured integrally at one time during construction. Through the cooperation of the lapping installation part and the parallel installation part, the formwork support steps of the panel formwork are simple and fast, and the structure is safe and stable. Through the cooperation of several downwardly hooked steel bars and upwardly hooked steel bars, the stress of the panel formwork during the pouring process is preferentially dispersed, the resistance to construction disturbance is strengthened, and the overall performance of the panel after pouring is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the following drawings are only some exemplary embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the content of the exemplary embodiments of the present invention and these drawings without creative efforts.

[0021] Figure 1 It is a schematic diagram of the overall structure in the present invention; Figure 2 Schematic perspective sectional view of the present invention; Figure 3 Schematic structural view of the panel template in the present invention; Figure 4 Schematic exploded sectional view of the cooperation between the panel template and the lapping installation part in the present invention; Figure 5 Schematic sectional view of the cooperation between the parallel installation part and the panel template in the present invention; Figure 6 Schematic structural view of the triangular combined truss in the present invention; Figure 7 Schematic sectional view of the parallel installation part in the present invention; Figure 8 Schematic structural view of the cooperation between the conical positioning block and the conical sliding block and the lower hooked steel bar in the present invention; Figure 9 In the present invention Figure 2 Partial enlarged structural view at position A in the present invention.

[0022] In the figure: 1, foundation engineering; 2, triangular combined truss; 201, first connecting rod; 202, second connecting rod; 203, third connecting rod; 204, first support rod; 205, second support rod; 206, third support rod; 3, panel template; 301, horizontal I-beam; 302, vertical I-beam; 303, steel plate; 304, bolt hole; 305, connecting bolt; 4, vertical truss; 5, panel foundation; 6, concrete panel; 7, docking strip; 8, lapping frame; 9, positioning hole; 10, vertical installation frame; 11, vertical bracing frame; 12, installation hole; 13, geogrid; 14, lower hooked steel bar; 15, upper hooked steel bar; 16, connection hole; 17, connecting bar; 18, conical positioning block; 19, conical sliding block; 20, positioning bolt; 21, connecting plate; 22, rivet. Detailed implementation mode

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention.

[0024] To make the drawings concise, only the parts related to the invention are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, parts with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also can mean "more than one" situation, and "several" includes "two" and "more than two".

[0025] In this text, it should be noted that unless otherwise clearly specified and defined, the terms "install", "connect", and "join" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0027] In the description of this embodiment, the orientation or positional relationship such as "up", "down", "left", and "right" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0028] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0029] Embodiment 1, as Figures 1 to 9As shown in the figure, this embodiment proposes a casting formwork for a reinforced earth retaining wall, which includes a foundation project 1, a triangular combined truss 2, a vertical truss 4, a panel foundation 5, a reinforced wrapping body, and a concrete panel 6. A panel formwork 3 is arranged between the triangular combined truss 2 and the foundation project 1. There are multiple groups of panel formworks 3. A plurality of panel formworks 3 are vertically arranged between each group of panel formworks 3 for assembly according to retaining walls of different sizes. A plurality of panel formworks 3 are arranged obliquely towards the foundation project 1 as a whole. The vertical truss 4 is embedded in the foundation project 1, and the vertical truss 4 is located on one side of the triangular combined truss 2. The panel foundation 5 is installed on the foundation project 1, and the panel foundation 5 is arranged at the bottom of the panel formwork 3. The panel formwork 3 includes a horizontal I-beam 301, a vertical I-beam 302, a steel plate 303, a lap joint installation part, and a parallel installation part. The horizontal I-beam 301 is fixedly installed on the upper and lower sides of the steel plate 303, and the vertical I-beam 302 is fixedly installed on the left and right sides of the steel plate 303. The horizontal I-beam 301, the vertical I-beam 302, and the steel plate 303 are installed together by welding. A plurality of bolt holes 304 are equally spaced on the horizontal I-beam 301 and the vertical I-beam 302. Connecting bolts 305 for connecting each panel formwork 3 are arranged in each of the plurality of bolt holes 304. A lap joint installation part is installed between a plurality of vertically arranged panel formworks 3 in each group for connecting the plurality of vertically arranged panel formworks 3. A parallel installation part is arranged between each group of panel formworks 3 for connecting multiple groups of panel formworks 3 together.

[0030] Specifically, during the actual construction process, the foundation soil is excavated and the foundation of the overall structure is processed. The foundation is filled with materials according to actual requirements and compacted densely. After the compaction quality meets the design requirements, the panel foundation 5 is poured. After completion, a layer of unidirectional tensile geogrid is laid at the bottom layer and the length of the annular wrapping section is reserved. The reinforced wrapping body is placed on the side close to the panel. Then, the end of the unidirectional geogrid is bent and wrapped back to overlap with the geogrid laid flat at the bottom layer. Subsequently, the soil is filled and compacted to reach the specified compaction degree. Then, as needed, multiple upward-hooked steel bars 15 are laid and the hooked parts are exposed. Then, the positions of the upward-hooked steel bars 15 are fixed. The above steps are repeated until the height required for laying is reached. Then, the triangular combined truss 2 and the panel formwork 3 are transported to the retaining wall construction position. First, the vertical truss 4 that needs to be embedded in the foundation to a certain depth is constructed. Then, the lap joint of the triangular combined truss 2 is completed, so that one end of the triangular combined truss 2 is connected to the vertical truss 4. Then, the steel plate 303, the horizontal I-beam 301, and the vertical I-beam 302 are installed together by welding. Then, according to actual needs, multiple panel formworks 3 are assembled vertically through the lap joint installation part. Then, this step is repeated to complete the installation of multiple groups of panel formworks 3. And using the parallel installation part, with the cooperation of the bolt holes 304 and the connecting bolts 305, the construction of the panel formwork 3 is completed. During this process, the downward-hooked steel bars 14 and the connecting bars 17 are installed. Then, the concrete panel 6 can be poured. After completion, the formwork is removed and the concrete panel 6 is cured.

[0031] It should be noted that the size and quantity of the panel formwork 3 can be customized according to the size of the retaining wall. During the assembly of the panel formwork 3, a crane is generally used for hoisting and positioning.

[0032] It should be added that when constructing a multi-level reinforced soil retaining wall, the end of the triangular combined constant truss of the second layer can be connected to the top of the panel formwork 3 of the first layer. That is, when installing the triangular combined truss for the second time, the panel formwork 3 of the first layer acts as the vertical truss 4, thus making the construction more convenient.

[0033] As described above, as Figure 4 shown, the lap joint installation part includes a docking strip 7, a lap joint frame 8, and positioning holes 9. A docking strip 7 is fixedly installed on each horizontal I-beam 301. A toothed protrusion for guiding is provided on one side of each docking strip 7 away from the horizontal I-beam 301. A lap joint frame 8 is provided between every two adjacent horizontal I-beams 301. The downward two sides of the lap joint frame 8 are adapted to the toothed structures on the docking strip 7. A plurality of positioning holes 9 are equidistantly opened on the upper and lower sides of the lap joint frame 8. The plurality of positioning holes 9 correspond one by one to the plurality of bolt holes 304 on the horizontal I-beam 301.

[0034] Specifically, when assembling multiple panel forms 3 along the vertical direction, the docking bars 7 on the horizontal I-beams 301 above the bottom panel form 3 are at the upper part. Then, a lapping frame 8 is placed on the horizontal I-beam 301 at the top of the bottom panel form 3. At this time, the lapping frame 8 is mutually engaged with the docking bar 7 through cooperation. At this time, the positioning holes 9 on the lapping frame 8 correspond to the bolt holes 304 on the horizontal I-beam 301. Then, through the arrangement of the connecting bolts 305, they can be connected together. Then, the next panel form 3 is hoisted onto the top of the lapping frame 8, and this step is repeated until the height of this group of panel forms 3 meets the construction requirements.

[0035] As described above, Figure 5 As shown in the figure, the parallel installation part includes a vertical installation frame 10, a vertical connection frame 11, and installation holes 12. A vertical installation frame 10 and a vertical connection frame 11 are arranged between each group of panel forms 3. The two sides of the vertical installation frame 10 and the vertical connection frame 11 are respectively adapted to a number of vertical I-beams 302. A number of installation holes 12 are respectively equidistantly arranged on the two sides of the vertical installation frame 10. The number of installation holes 12 corresponds one-to-one with the number of bolt holes 304 on a number of vertical I-beams 302.

[0036] Specifically, after setting a number of groups of panel forms 3, the number of groups of panel forms 3 is hoisted to the construction position. A vertical connection frame 11 is first hoisted and installed at the top between two adjacent panel forms 3 for installing the lower hook reinforcement 14, and the connecting bars 17 are installed in place synchronously. Then, a number of groups of installation forms are installed in sequence until the installation of the installation forms is completed. At this time, the installation of the lower hook reinforcement 14 has also been completed. Then, by means of hoisting, the vertical installation frame 10 is installed. After installation in place, the installation holes 12 on both sides of the vertical installation frame 10 respectively correspond to the bolt holes 304 on the corresponding number of vertical I-beams 302, and they can be connected together by using the connecting bolts 305.

[0037] As described above, Figure 6As shown in the figure, the triangular combined truss 2 is used to provide support for the formwork 3. The triangular combined truss 2 includes a first connecting rod 201, a second connecting rod 202, a third connecting rod 203, a first support rod 204, a second support rod 205 and a third support rod 206. A first connecting rod 201, a second connecting rod 202 and a third connecting rod 203 are horizontally arranged between each group of formworks 3 and the vertical truss 4. The first connecting rod 201, the second connecting rod 202 and the third connecting rod 203 are arranged at equal intervals from top to bottom in sequence and are hinged to the formwork 3. A first support rod 204 is obliquely arranged on the side of each group of formworks 3. One end of the first support rod 204 is hinged to the formwork 3, and the other end is hinged to the free end of the third connecting rod 203. A second support rod 205 and a third support rod 206 are arranged on one side of each group of formworks 3. Both ends of the third support rod 206 are respectively hinged to the first support rod 204, the second connecting rod 202, the formwork 3 and the third connecting rod 203. The second support rod 205 is respectively hinged to the first support rod 204, the third connecting rod 203, the second connecting rod 202 and the formwork 3. Just connect them together in sequence.

[0038] As Figure 2 shown, the reinforced inclusion is arranged inside the foundation project 1. The reinforced inclusion is located between the foundation project 1 and the formwork 3. The reinforced inclusion includes a geogrid 13 and a connecting part. A number of geogrids 13 are arranged inside the foundation project 1. Each geogrid 13 is stacked vertically. A number of connecting parts are arranged between every two layers of geogrids 13 for connecting the formwork 3.

[0039] Specifically, in actual construction, after each layer of geogrid is laid, backfilling and compaction should be carried out and then the up-hooked steel bars 15 are laid. One end of the up-hooked steel bar 15 is welded to the connecting part until the laying of the geogrid 13 is completed. For the structure of the geogrid 13, it also includes geotextile bags and crushed stones or cohesive soil filled in the geotextile bags. This can effectively utilize the on-site crushed stones and reduce the construction cost. On the other hand, the geotextile bags wrap the crushed stones or cohesive soil, which is convenient for bending the ends of the geogrids later, avoiding the problem of inconvenient laying of the geogrids due to the lack of geotextile bag wrapping of the crushed stones and reducing the labor intensity.

[0040] As Figures 7 to 9As shown, the concrete panel 6 is arranged between the panel formwork 3 and the reinforced wrapper. The concrete panel 6 further includes lower hooked bars 14 and upper hooked bars 15. A number of upper hooked bars 15 are arranged between every two layers of geogrids 13. One side of each upper hooked bar 15 is provided with a lower hooked bar 14. The lower hooked bar 14 is installed between the panel formwork 3 or the vertical tie bars 11 through the connection holes 16, the connecting bars 17, the tapered positioning blocks 18, the tapered sliding blocks 19 and the positioning bolts 20. The connecting bars 17 are arranged inside the space formed between the lower hooked bar 14 and the upper hooked bar 15. Wherein, both ends of the connection hole 16 are tapered. A tapered positioning block 18 is fixedly installed on each lower hooked bar 14. The tapered positioning block 18 abuts against one side of the connection hole 16 close to the geogrid 13. A tapered sliding block 19 is slidably sleeved on each lower hooked bar 14. The tapered sliding block 19 abuts against one side of the connection hole 16 close to the panel formwork 3. A positioning bolt 20 for connecting the panel formwork 3 or the vertical tie bar 11 is installed at the end of each lower hooked bar 14.

[0041] Specifically, since the concrete panel 6 is arranged between the panel formwork 3 and the reinforced wrapper, and the concrete panel 6 includes the lower hooked bars 14, the upper hooked bars 15 and the connecting bars 17, the lower hooked bars 14 are fixed on the panel formwork 3 or the vertical tie bars 11 through the positioning bolts 20. The connecting bars 17 are arranged inside the space formed between the lower hooked bars 14 and the upper hooked bars 15. The upper hooked bars 15 are arranged between adjacent geogrids 13.

[0042] When installing the lower hooked bars, since a tapered positioning block is further arranged on the lower hooked bars, when inserting the lower hooked bar into a connection hole, when the tapered positioning block abuts against the connection hole, the installation position can be reached. Then, a tapered sliding block is sleeved on the other end of the lower hooked bar, and it is installed inside the connection hole with a positioning bolt. Under the action of the tapered positioning block and the tapered sliding block, the force at the installation position is more uniform, further improving the stability of the panel formwork during the process of pouring the concrete panel.

[0043] It should be noted that the lower hooked bars 14 inside the concrete panel 6 cooperate with the upper hooked bars 15 arranged between adjacent geogrids 13. The lower hooked bars 14 and the upper hooked bars 15 are fixed with the connecting bars 17. The cooperation of the three can not only provide tension for the panel formwork 3, but also improve the compressive and shear resistance of the panel as a part of the panel.

[0044] The above-mentioned, such as Figure 9As shown in the figure, the connecting part includes a connecting plate 21 and a rivet 22. One end of each upward-hooked steel bar 15 is fixedly installed with a connecting plate 21. The connecting plates 21 are laid flat on the soil-cement grid 13. Each connecting plate 21 is provided with a rivet 22, and the rivet 22 fixes the connecting plate 21 above the soil-cement grid 13.

[0045] Specifically, a number of grooves are horizontally arranged on both the upper and lower sides of the connecting plate 21. These grooves can further improve the stability of the relative position between the connecting plate 21 and the soil-cement grids 13 on both sides. Furthermore, rivets 22 are also provided for reinforcement, thereby improving the overall stability.

[0046] It should be noted that in the prior art, angle steel is generally used for the connecting components, and grooves need to be dug in each layer of backfill. This not only makes it difficult to compact the backfill, but also damages the compaction degree of the backfill and reduces the overall stability of the retaining wall. However, by using the connecting plate 21, the need to dig grooves in advance in each layer of backfill is avoided, which not only ensures the compaction degree of each layer of backfill, improves the overall stability of the reinforced soil retaining wall, but also reduces the labor intensity.

[0047] The working principle or usage process of this application is as follows: During the actual construction process, first, the foundation soil is excavated and the overall structure foundation is treated. The foundation is filled with fillers according to actual requirements and rolled densely. After the compaction quality meets the design requirements, the panel foundation 5 is poured. After completion, a layer of unidirectional tensile geogrid is laid at the bottom layer and the length of the annular wrapping section is reserved. The reinforced wrapping body is placed at a position close to the panel side. Then, the end of the unidirectional geogrid is bent and wrapped back to overlap with the geogrid laid flat at the bottom layer. Subsequently, the backfill is compacted to reach the specified compaction degree. Then, according to the need, a plurality of upward-hooked steel bars 15 are laid and the hooked parts are exposed. During the laying process, since one end of the upward-hooked steel bar 15 is welded to the connecting plate 21, and a number of grooves are horizontally arranged on both the upper and lower sides of the connecting plate 21, these grooves can further improve the stability of the relative position between the connecting plate 21 and the soil-cement grids 13 on both sides. Furthermore, rivets 22 are also provided for reinforcement, thereby improving the overall stability and fixing the position of the upward-hooked steel bar 15. Repeat the above steps until the required height is reached.

[0048] Then, transport the triangular combined truss 2 and the formwork panel 3 to the construction position of the retaining wall. First, construct the vertical truss 4 that needs to be embedded into the foundation to a certain depth. Then, complete the lapping of the triangular combined truss 2, so that one end of the triangular combined truss 2 is connected to the vertical truss 4. Then, install the steel plate 303, the horizontal I-beam 301 and the vertical I-beam 302 together by welding. Then, according to actual needs, assemble multiple formwork panels 3 along the vertical direction. At this time, the docking strip 7 on the horizontal I-beam 301 above the bottom formwork panel 3 is on the upper part. Then, place a lapping frame 8 on the horizontal I-beam 301 at the top of the bottom formwork panel 3. At this time, the lapping frame 8 is mutually engaged with the docking strip 7 through cooperation. At this time, the positioning hole 9 on the lapping frame 8 corresponds to the bolt hole 304 on the horizontal I-beam 301. Then, through the setting of the connecting bolt 305, they can be connected together. Then, hoist the next formwork panel 3 to the top of the lapping frame 8 and repeat this step until the height of this group of formwork panels 3 meets the construction requirements.

[0049] After setting several groups of formwork panels 3, hoist several groups of formwork panels 3 to the construction position. First, hoist and install a vertical connecting frame 11 at the top between two adjacent formwork panels 3 for installing the lower hook reinforcement 14, and synchronously install the connecting reinforcement 17 in place. Then, install several groups of formwork panels in sequence until the installation of the formwork panels is completed. At this time, the installation of the lower hook reinforcement 14 has also been completed. Then, adopt the hoisting method to install the vertical installation frame 10. After installation in place, the installation holes 12 on both sides of the vertical installation frame 10 respectively correspond to the bolt holes 304 on the corresponding several vertical I-beams 302, and use the connecting bolt 305 to connect the two together, then the construction of the formwork panel 3 can be completed. Then, the concrete panel 6 can be poured. After pouring, remove the formwork and carry out the maintenance of the concrete panel 6.

[0050] Embodiment 2: Based on a reinforced soil retaining wall casting formwork, this embodiment 2 also proposes a construction method for a reinforced soil retaining wall, including the following steps: The first step is to build the foundation. Excavate the foundation soil and carry out the overall structural foundation treatment. Fill the foundation with materials according to actual requirements and compact it densely. After the compaction quality meets the design requirements, pour the panel foundation 5.

[0051] The second step is the construction of the reinforced wrapping body. Lay a layer of unidirectional tensile geogrid at the bottom layer and reserve the length of the annular wrapping section. Place the reinforced wrapping body at a position close to the panel side. Then, bend the end of the unidirectional geogrid and turn it back to overlap with the bottom-layer flat-laid geogrid. Subsequently, fill and compact the soil until the specified compaction degree is reached; In the third step, for the construction of the connecting piece, multiple upward-hooked steel bars 15 are laid with the hooked parts exposed. During the laying process, since one end of the upward-hooked steel bar 15 is welded to the connecting plate 21, several grooves are horizontally arranged on both the upper and lower sides of the connecting plate 21. These grooves can further enhance the stability of the relative position between the connecting plate 21 and the soil-cement grids 13 on both the upper and lower sides. Furthermore, rivets 22 are also provided for reinforcement, thereby improving the overall stability and fixing the position of the upward-hooked steel bar 15.

[0052] In the fourth step, the construction of the reinforced wrapping body is completed. Repeat the above steps until the height required for laying is reached.

[0053] In the fifth step, the truss is installed. The triangular combined truss 2 and the panel formwork 3 are transported to the retaining wall construction position. First, the vertical truss 4 that needs to be embedded in the foundation to a certain depth is constructed, and then the overlapping of the triangular combined truss 2 is completed, so that one end of the triangular combined truss 2 is connected to the vertical truss 4.

[0054] In the sixth step, the formwork is vertically assembled. The steel plate 303, the horizontal I-beam 301, and the vertical I-beam 302 are installed together by welding. Then, according to actual needs, multiple panel formworks 3 are assembled along the vertical direction. At this time, the docking strip 7 on the horizontal I-beam 301 above the bottom panel formwork 3 is at the upper part. Then, a lapping frame 8 is placed on the horizontal I-beam 301 at the top of the bottom panel formwork 3. At this time, the lapping frame 8 is mutually fitted with the docking strip 7 through cooperation. At this time, the positioning holes 9 on the lapping frame 8 correspond to the bolt holes 304 on the horizontal I-beam 301. Then, through the setting of the connecting bolts 305, they can be connected together. Then, the next panel formwork 3 is hoisted to the top of the lapping frame 8. Repeat this step until the height of this group of panel formworks 3 reaches the construction requirements.

[0055] In the seventh step, the formwork construction is completed. After several groups of panel formworks 3 are set up, several groups of panel formworks 3 are hoisted to the construction position. A vertical connecting frame 11 is first hoisted and installed at the top between two adjacent panel formworks 3 for installing the downward-hooked steel bar 14. The downward-hooked steel bar 14 can also be connected to the panel formwork 3, and the connecting bars 17 are installed in place synchronously. Then, several groups of installation formworks are installed in sequence until the installation of the installation formworks is completed. At this time, the installation of the downward-hooked steel bar 14 is also completed. Then, by using the hoisting method, the vertical installation frame 10 is installed. After installation in place, the installation holes 12 on both sides of the vertical installation frame 10 correspond to the bolt holes 304 on the corresponding several vertical I-beams 302, and they are connected together by using the connecting bolts 305, thus completing the construction of the panel formwork 3.

[0056] In the eighth step, concrete is poured. The concrete panel 6 is poured, and after pouring, the formwork is removed and the concrete panel 6 is cured.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. A reinforced earth retaining wall casting formwork, comprising a foundation project (1), characterized in that, Including: A triangular combined truss (2), with a formwork panel (3) arranged between the triangular combined truss (2) and the foundation engineering (1). There are multiple groups of the formwork panels (3), and between each group of the formwork panels (3), multiple of the formwork panels (3) are vertically arranged for assembly according to retaining walls of different sizes. A number of the formwork panels (3) are integrally arranged obliquely towards the foundation engineering (1); A vertical truss (4) embedded in the foundation engineering (1), and the vertical truss (4) is located on one side of the triangular combined truss (2); A formwork foundation (5) installed on the foundation engineering (1), and the formwork foundation (5) is arranged at the bottom of the formwork panel (3); A reinforced inclusion body arranged inside the foundation engineering (1), and the reinforced inclusion body is located between the foundation engineering (1) and the formwork panel (3); A concrete panel (6) arranged between the formwork panel (3) and the reinforced inclusion body.

2. The formwork for casting a reinforced soil retaining wall according to claim 1, characterized in that, The formwork panel (3) includes a horizontal I-beam (301), a vertical I-beam (302), and a steel plate (303). The horizontal I-beams (301) are fixedly installed on the upper and lower sides of the steel plate (303), and the vertical I-beams (302) are fixedly installed on the left and right sides of the steel plate (303); A lapping installation part is installed between a number of the formwork panels (3) arranged vertically in each group for connecting a number of the formwork panels (3) arranged vertically; A juxtaposed installation part is arranged between each group of the formwork panels (3) for connecting multiple groups of the formwork panels (3) together.

3. The formwork for reinforced earth retaining wall casting according to claim 2, wherein, A number of bolt holes (304) are equidistantly opened on the horizontal I-beam (301) and the vertical I-beam (302), and connecting bolts (305) for connecting each formwork panel (3) are arranged in a number of the bolt holes (304).

4. The formwork for casting a reinforced earth retaining wall according to claim 3, characterized in that, The lapping installation part includes: A docking strip (7), and the docking strip (7) is fixedly installed on each of the horizontal I-beams (301). A toothed protrusion for guiding is arranged on one side of each docking strip (7) away from the horizontal I-beam (301); A lapping frame (8) arranged between every two adjacent horizontal I-beams (301), and the lower sides of the lapping frame (8) are both adapted to the toothed structures on the docking strip (7); Positioning holes (9), and a number of the positioning holes (9) are equidistantly opened on the upper and lower sides of the lapping frame (8), and a number of the positioning holes (9) correspond to a number of the bolt holes (304) on the horizontal I-beam (301) one by one.

5. A formwork for casting a reinforced earth retaining wall according to claim 3, characterized in that, The juxtaposed installation part includes: Vertical mounting frame (10) and vertical connection frame (11), the vertical mounting frame (10) and the vertical connection frame (11) are arranged between each group of the panel formworks (3), and both sides of the vertical mounting frame (10) and the vertical connection frame (11) are respectively adapted to a plurality of the vertical I-beams (302); Mounting holes (12), a plurality of the mounting holes (12) are respectively and equidistantly formed on both sides of the vertical mounting frame (10), and the plurality of the mounting holes (12) correspond to a plurality of the bolt holes (304) of the plurality of the vertical I-beams (302) one by one.

6. The formwork for casting a reinforced earth retaining wall according to claim 5, characterized in that, The triangular combined truss (2) includes: Third connecting rod (203), the third connecting rod (203) is horizontally arranged between each group of the panel formworks (3) and the vertical truss (4), and the third connecting rod (203) is hinged to the panel formwork (3); First support rod (204), the first support rod (204) is obliquely arranged on the side of each group of the panel formworks (3), one end of the first support rod (204) is hinged to the panel formwork (3), and the other end is hinged to the free end of the third connecting rod (203).

7. The formwork for casting a reinforced earth retaining wall according to claim 6, characterized in that, The reinforced wrapping body includes: Geotextile grid (13), a plurality of the geotextile grids (13) are arranged inside the foundation engineering (1), and each of the geotextile grids (13) is stacked and arranged in the vertical direction; Connecting part, a plurality of the connecting parts are arranged between every two layers of the geotextile grids (13) for connecting the panel formwork (3).

8. A formwork for casting a reinforced earth retaining wall according to claim 7, characterized in that, The concrete panel (6) further includes lower hooked bars (14) and upper hooked bars (15), a plurality of the upper hooked bars (15) are arranged between every two layers of the geotextile grids (13), one side of each of the upper hooked bars (15) is provided with the lower hooked bar (14), and the lower hooked bar (14) is installed between the panel formwork (3) or the vertical connection frame (11) through a connection hole (16); Connecting bars (17), the connecting bars (17) are arranged inside the space formed between the lower hooked bar (14) and the upper hooked bar (15); Wherein, both ends of the connection hole (16) are provided in a conical shape; Conical positioning blocks (18), the conical positioning blocks (18) are fixedly installed on each of the lower hooked bars (14), and the conical positioning blocks (18) are abutted against one side of the connection hole (16) close to the geotextile grid (13); Conical sliding blocks (19), the conical sliding blocks (19) are slidably sleeved on each of the lower hooked bars (14), and the conical sliding blocks (19) are abutted against one side of the connection hole (16) close to the panel formwork (3); Positioning bolts (20), positioning bolts (20) for connecting the panel formwork (3) or the vertical connection frame (11) are installed at the end of each of the lower hooked bars (14).

9. The formwork for casting a reinforced earth retaining wall according to claim 8, characterized in that, The connecting part includes: Connecting plate (21), one end of each of the upwardly hooked steel bars (15) is fixedly provided with the connecting plate (21), and the connecting plate (21) is laid flat on the geogrid (13); Rivet (22), the rivet (22) is provided on each of the connecting plates (21), and the rivet (22) fixes the connecting plate (21) above the geogrid (13).

10. A construction method for a reinforced soil retaining wall, which uses a casting formwork for a reinforced soil retaining wall as described in claim 9, is characterized in that, It includes the following steps: The first step, foundation construction, excavate the foundation soil and perform overall structural foundation treatment, and pour the panel foundation (5); The second step, construction of the reinforced enclosure, lay a layer of unidirectional tensile geogrid on the bottom layer, then bend and wrap the end of the unidirectional geogrid and overlap it with the bottom-layer flat geogrid, and then fill and compact the soil to reach the specified compaction degree; The third step, construction of the connecting piece, lay a plurality of upwardly hooked steel bars (15) with the hooked parts exposed, and weld one end of the upwardly hooked steel bar (15) to the connecting plate (21) and fix it with the rivet (22); The fourth step, complete the construction of the reinforced enclosure, repeat the first to third steps until the height required for laying is reached; The fifth step, install the truss, transport the triangular combined truss (2) and the panel formwork (3) to the retaining wall construction position, construct the vertical truss (4) that needs to be embedded in the foundation to a certain depth, then lap the triangular combined truss (2), and connect one end of the triangular combined truss (2) to the vertical truss (4); The sixth step, vertically assemble the formwork, weld the steel plate (303), the horizontal I-beam (301) and the vertical I-beam (302) together, and then, according to actual needs, assemble a plurality of panel formworks (3) along the vertical direction, and use the connecting bolts (305) to connect them together through the setting of the lapping frame (8) and the docking strip (7). Repeat this step until the height of this group of panel formworks (3) reaches the construction requirements; The seventh step, complete the formwork construction. After setting several groups of panel formworks (3), hoist several groups of panel formworks (3) to the construction position. First, hoist and install a vertical connecting frame (11) at the top between two adjacent panel formworks (3) for installing the downwardly hooked steel bar (14). The downwardly hooked steel bar (14) can also be connected to the panel formwork (3), and the connecting bars (17) are installed in place synchronously. Then, install several groups of installation formworks in sequence, and then install the vertical installation frame (10), and use the connecting bolts (305) to connect the vertical installation frame (10) and the panel formwork (3) together; The eighth step, pour concrete, pour the concrete panel (6), and after pouring, remove the formwork and cure the concrete panel (6).

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