Permanent and temporary combined slope protection structure

Abstract

The invention relates to the technical field of embankment filling, and particularly discloses a permanent and temporary combined side slope protection structure which comprises an empty side slope and a line arranged on the side slope, an embankment used for filling is arranged on one side of the side slope, a reinforced structure is arranged on one side of the embankment, and the reinforced structure is arranged on the other side of the embankment. The reinforced structure comprises a geogrid laid on the embankment and a wrapping body included in the geogrid; through the design of the tie bars and the wrapping bodies, transverse resistance is provided through friction force between the ballast and the filler, the stability of the temporary side slope is effectively enhanced, sliding and collapse are prevented, anti-scouring protection is provided for the side slope through the geotechnical cloth, rainwater scouring and soil erosion are effectively prevented, the integrity of the side slope is kept, and the service life of the side slope is prolonged. The temporary protection requirement in the construction period is met, the structure can serve as a part of a permanent structure, optimized utilization of resources is achieved, and the overall construction cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of embankment filling, in particular to a permanent and temporary combined slope protection structure. Background Art

[0002] As the high-speed rail network continues to expand, it is sometimes necessary to run new rail lines in parallel or merge them into existing rail lines. In this case, the existing roadbed often needs to be modified. Since the new rail line is very close to the existing rail line, and the existing rail line cannot be shut down for normal traffic operation, effective and appropriate construction technical measures are needed to ensure the quality of the newly constructed line while ensuring the safe operation of the existing line. This usually means that the slope angle formed by the new fill will be steeper, which increases the difficulty of construction. Therefore, during the fill construction, the reinforcement and protection of the newly formed temporary slope becomes an important technical link.

[0003] For slope protection in confined spaces, the main support protection technology currently used is retaining walls, etc. However, this traditional method has some obvious disadvantages: including large amount of material consumption, high cost, and difficulty in demolition. In addition, if these retaining walls are retained in later projects and buried in the roadbed to become part of the permanent structure, it may also cause problems with uneven stiffness distribution. Especially when filling and widening the roadbed in stages, the stable connection between the new and old roadbeds is also a challenge that needs to be solved. Based on this, the present application provides a permanent and temporary combined slope protection structure. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a permanent and temporary combined slope protection structure, which solves the problem that the existing slope protection currently mainly adopts retaining protection, but the retaining wall has the problems of high material consumption, high cost, and difficult demolition. If it is retained and buried in the roadbed to be transformed into a permanent project in the future, there is still the hidden danger of uneven stiffness. In addition, when the side width roadbed is filled in steps, it is difficult to form a stable connection between the new and old roadbeds.

[0005] The permanent and temporary combined slope protection structure of the present invention comprises a slope facing the open space and a line arranged on the slope, an embankment for filling is arranged on one side of the slope, a reinforcement structure is arranged on one side of the embankment, the reinforcement structure comprises a geogrid laid on the embankment and an inclusion included in the geogrid, the inclusion is one or more and is laid in sequence at a preset angle, the outer side of the inclusion is also covered with a layer of geotextile, and the geotextile is spread flat along the open space of the slope;

[0006] The top surface of the embankment side is also paved with tie bars, which are one or more and overlapped at even intervals along the line direction. The force-bearing direction is laid perpendicular to the line direction and is fixed by fasteners after being laid flat.

[0007] As a further improvement of the present invention, one end of the tie rod extends to one side of the inclusion body and folds back along the outer side of the inclusion body to cover the inclusion body.

[0008] As a further improvement of the present invention, the wrapping body includes a wrapping bag and a filler filled into the inner side of the wrapping bag, and a frame is further provided on the outer side of the wrapping bag, and the frame is in contact with the wrapping bag.

[0009] As a further improvement of the present invention, the frame body includes an outer frame, the inner side of the outer frame is roughened and fits with the outer side of the wrapping bag.

[0010] As a further improvement of the present invention, the wrapping bag comprises a woven belt, the woven belt is woven into a wrapping area, and the wrapping area is adapted to the filler.

[0011] As a further improvement of the present invention, a fitting groove is provided at the top of the outer frame, a sealing cover is installed at the fitting groove, the sealing cover is arranged at the top of the enclosure, one or more plug holes are provided at the cover body of the sealing cover, and a connector is installed at the plug hole for connecting the two outer frames.

[0012] As a further improvement of the present invention, one end of the geogrid is bent in an arc shape at a preset angle near the inclusion body, and a suture rod is provided at the bending position.

[0013] As a further improvement of the present invention, one end of the geotextile extends to the foot of the slope and is pressed against one side of the slope through a fixing member.

[0014] As a further improvement of the present invention, the line includes Railway 1, Railway 2 and Railway 3, and Railway 3 is an existing railway.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention uses the friction between the ballast and the filler to provide lateral resistance through the design of the reinforcement and the inclusion, effectively enhancing the stability of the temporary slope and preventing sliding and collapse. The use of geotextiles provides anti-scouring protection for the slope, effectively preventing rainwater scouring and soil erosion, and maintaining the integrity of the slope. It not only meets the temporary protection needs during construction, but can also be used as part of the permanent structure to achieve optimal utilization of resources and reduce overall construction costs.

[0017] By embedding geogrids in the slope, the new and old roadbeds can be stretched and reinforced in layers during the widening process, effectively strengthening the connection between the new and old roadbeds and improving the stability of the overall structure. Compared with traditional retaining structures such as retaining walls, this protective structure reduces the use of materials and the environmental impact during construction, which is in line with the principle of sustainable development.

[0018] In addition, the setting of preset connectors and fitting grooves, as well as the laying of geogrids and geotextiles, simplified the construction steps, accelerated the construction progress, and reduced the construction difficulty. At the same time, during the construction process, effective protective measures were taken to ensure the safe operation of the existing railway lines and reduce the impact and inconvenience on public transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 It is a schematic diagram of the combined structure of embankment and slope of the present invention;

[0021] Figure 2 It is a schematic diagram of the combined structure of the slope and the inclusion of the present invention;

[0022] Figure 3 This is a schematic diagram of the combined structure of the existing and newly built railway slopes of the present invention;

[0023] Figure 4 It is a schematic diagram of the existing railway and slope combined structure of the present invention;

[0024] Figure 5 It is a schematic diagram of the combined structure of the slope, the newly built railway and the existing railway of the present invention;

[0025] Figure 6 This is a schematic diagram of the combined structure of abandoned existing railways and newly built railways in the present invention;

[0026] Figure 7 This is a schematic diagram of the combined structure of the frame and the enclosure of the present invention;

[0027] Figure 8 This is a schematic diagram of the sealing cover structure of the present invention;

[0028] Fig. 9 It is a schematic diagram of the structure of the wrapping bag of the present invention.

[0029] In the figure: 1, embankment; 2, slope; 3, geogrid; 4, inclusion; 5, frame; 6, geotextile; 7, connector; 8, tie rod; 9, suture rod; 10, railway one; 11, railway two; 12, railway three;

[0030] 41. Wrapping bag; 42. Filling material;

[0031] 51. outer frame; 52. fitting groove; 53. sealing cover; 54. plug-in hole;

[0032] 411. Wrapping area; 412. Braided belt. DETAILED DESCRIPTION

[0033] The following will disclose multiple embodiments of the present invention with diagrams. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these physical details are not necessary. In addition, for the purpose of simplifying the diagram, some conventional structures and components will be depicted in a simple schematic manner in the diagram.

[0034] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] See also Figure 1-9 The high-speed railway network is constantly increasing, and it is often necessary to run parallel or merge into existing lines, which requires the transformation of existing roadbeds. During the construction process, the new line is very close to the existing line, but the existing line cannot be shut down. Appropriate technical measures need to be taken to ensure the quality of the new line while ensuring the operational safety of the existing line. Therefore, the new fill slope 2 is generally steeper, and the temporary slope 2 needs to be reinforced and protected during the filling process.

[0036] At present, the protection of confined space slope 2 mainly adopts retaining protection, but retaining walls have problems such as high consumables, high cost, and difficult demolition. If they are retained and buried in the roadbed body and transformed into permanent projects in the future, there is also the hidden danger of uneven stiffness, and when the side widening roadbed is filled in steps, it is difficult to form a stable connection between the new and old roadbeds. Based on this, the present application provides a permanent and temporary combined slope 2 protection structure, including a slope 2 facing the open air and a line arranged on the slope 2, an embankment 1 for filling is arranged on one side of the slope 2, and a reinforced structure is arranged on one side of the embankment 1.

[0037] The reinforcement structure includes a geogrid 3 laid on the embankment 1 and an inclusion 4 included in the geogrid 3. There are one or more inclusions 4, which are laid in sequence at a preset angle. The outer side of the inclusion 4 is also covered with a layer of geotextile 6, and the geotextile 6 is spread flat along the free surface of the slope 2.

[0038] The top surface of the embankment 1 is also paved with tie bars 8, which are one or more tie bars 8 and overlapped at even intervals along the line direction. The force-bearing direction is laid perpendicular to the line direction and is fixed by fasteners after being laid flat.

[0039] In the construction of high-speed railways, in order to achieve safe connection between the new line and the existing line, a permanent and temporary combined slope 2 protection structure is adopted. The goal is to ensure the stability of the new fill slope 2 during the construction process, while taking into account the safety requirements of future permanent operations.

[0040] The specific implementation steps are as follows:

[0041] First, a reasonable slope and slope shape are designed for the open side slope 2. A railway line is set on the slope 2 to ensure safety during construction and operation.

[0042] On one side of slope 2, an embankment 1 area is planned for filling with new soil and materials to ensure that embankment 1 can be safely connected to the existing line.

[0043] Laying of reinforced structures

[0044] On one side of the embankment 1 , a reinforcement structure is laid, which mainly includes a geogrid 3 and an inclusion 4 .

[0045] The geogrid 3 is a high-strength polymer material, which is laid on the embankment 1 and can effectively disperse the stress of the soil and enhance the overall stability.

[0046] The inclusion 4 is the filling material in the geogrid 3 , and is usually made of high-strength and high-durability materials. There can be one or more inclusions 4 , which are laid in sequence at a preset angle to enhance the overall strength and stability of the slope 2 .

[0047] Geotextile 6 Covering

[0048] The outer side of the inclusion body 4 is covered with a layer of geotextile 6 , which is spread flat along the free surface of the slope 2 .

[0049] The function of the geotextile 6 is to prevent soil erosion and rainwater scouring, while increasing the overall stability of the slope 2 and preventing soil sliding.

[0050] On the side top surface of the embankment 1, a tie bar 8 is laid. The tie bar 8 can be a single bar or multiple bars, and are overlapped at uniform intervals along the line direction.

[0051] The force direction of the reinforcement 8 should be perpendicular to the line direction. After being laid flat, it should be fixed by fasteners to ensure that the reinforcement 8 can effectively share the stress of the soil and prevent the slope 2 from deforming.

[0052] The 8-fold fold length of the tie bar is generally not less than 1.5m, the overlap between the widths is not less than 0.1m, and it is fixed to the fill soil by means of saddle nails.

[0053] The permanent and temporary combined slope 2 protection structure simplifies the construction process and improves the construction efficiency through the design of the inclusion body 4 and the reinforcement 8 with preset angles. The combined use of the geogrid 3 and the inclusion body 4 can effectively disperse the soil stress, enhance the overall stability of the slope 2, and prevent landslides and collapses.

[0054] Compared with traditional retaining wall structures, this protective structure reduces material consumption and construction difficulty, thereby reducing the overall construction cost, ensuring the safety of existing lines during construction and operation, and reducing the risk of shutdown.

[0055] The structure combines temporary construction with permanent operation, meeting stability requirements during construction while ensuring safety in future operations.

[0056] The use of geotextile 6 reduces soil erosion and rainwater scouring, reduces the negative impact on the environment, and conforms to the green construction concept of modern engineering.

[0057] One end of the tie rod 8 extends to one side of the inclusion body 4 and is folded back along the outer side of the inclusion body 4 to cover the inclusion body 4 .

[0058] The wrapping body 4 includes a wrapping bag 41 and a filler 42 filled into the inner side of the wrapping bag 41 . A frame 5 is further provided on the outer side of the wrapping bag 41 , and the frame 5 is in contact with the wrapping bag 41 .

[0059] The frame body 5 includes an outer frame 51 , the inner side of which is roughened and fits the outer side of the wrapping bag 41 .

[0060] The wrapping bag 41 includes a woven belt 412 , which is woven into a wrapping area 411 , and the wrapping area 411 is adapted to fit the filler 42 .

[0061] A fitting groove 52 is provided at the top of the outer frame 51, and a sealing cover 53 is installed at the fitting groove 52. The sealing cover 53 is provided at the top of the encapsulation body 4. One or more plug holes 54 are provided at the cover body of the sealing cover 53. A connector 7 is installed at the plug hole 54 for connecting the two outer frames 51.

[0062] One end of the tie rod 8 extends to one side of the inclusion body 4 and folds back along the outer side of the inclusion body 4 to form a covering for the inclusion body 4, which not only enhances the connection strength between the tie rod 8 and the inclusion body 4, but also improves the stability of the overall structure.

[0063] The wrapping body 4 includes a wrapping bag 41 and a filler 42 filled into the inner side of the wrapping bag 41. The wrapping bag 41 is usually made of a high-strength, corrosion-resistant material, such as a braided belt 412.

[0064] The filler 42 can be sand, concrete or other high-strength materials to increase the weight and stability of the enclosure 4 .

[0065] For example, the inclusion body 4 is filled with sand and gravel in a woven bag, and its ballast width is not less than 0.5m. It is firmly combined with its own ballast, the module connecting steel bars and the plastic sewing rods 9 and the tie bars 8. At this time, the temporary slope 2 formed by the stacking of the inclusion bodies 4 can be stacked as needed to form the slope and height required by the project.

[0066] A frame 5 is provided on the outside of the wrapping bag 41 , and the frame 5 is in close contact with the wrapping bag 41 . The frame 5 includes an outer frame 51 , and the inner side of the outer frame 51 is roughened to increase friction with the wrapping bag 41 and prevent sliding.

[0067] The wrapping bag 41 is woven from a woven belt 412 , and the woven belt 412 is woven into a wrapping area 411 . The wrapping area 411 is adapted to the filler 42 to ensure that the filler 42 can be evenly distributed and tightly filled.

[0068] A fitting groove 52 is provided at the top of the outer frame 51, and a sealing cover 53 is installed at the fitting groove 52. The sealing cover 53 is provided at the top of the enclosure 4. One or more plug holes 54 are provided at the cover body, and a connector 7 is installed at the plug hole 54 for connecting the two outer frames 51.

[0069] The connecting member 7 connects the two outer frames 51 together through the plug hole 54, such as steel bars or bolts, to ensure a tight connection between the enclosures 4 to prevent displacement and deformation.

[0070] The wrapping design of the reinforcement 8 and the tight connection of the inclusion 4 significantly enhance the overall stability of the slope protection structure 2 and prevent landslides and collapses.

[0071] The preset fitting groove 52 and the connecting piece 7 simplify the installation and connection process of the inclusion body 4 and improve the construction efficiency.

[0072] The use of high-strength, corrosion-resistant braided belts 412 and fillers 42 reduces material consumption and maintenance costs, thereby lowering overall construction costs.

[0073] Through reasonable design and construction, the safety of existing lines during construction and operation is ensured, the risk of outages is reduced, and the combination of temporary construction and permanent operation is achieved, which not only meets the stability requirements during construction, but also ensures the safety of future operations.

[0074] One end of the geogrid 3 is bent in an arc shape at a preset angle near the inclusion body 4, and a suture rod 9 is provided at the bending position.

[0075] One end of the geotextile 6 extends to the foot of the slope 2 and is pressed against one side of the slope 2 through a fixing member.

[0076] The lines include Railway 10, Railway 2 11 and Railway 3 12, of which Railway 3 12 are existing railways.

[0077] One end of the geogrid 3 is bent in an arc shape at a preset angle near the inclusion body 4, which increases the contact area between the geogrid 3 and the inclusion body 4 and enhances the connection strength between the two. A suture rod 9 is provided at the bending point to fix the arc-shaped bending part of the geogrid 3 to ensure its shape stability and tensile strength.

[0078] One end of the geotextile 6 extends to the foot of the slope 2 to ensure the protection coverage of the entire slope 2.

[0079] The geotextile 6 is pressed on one side of the slope 2 by fixing parts, such as fixing with saddle nails or pressing with heavy objects, which can prevent the slope from being directly eroded by rainwater, reduce soil erosion and water infiltration, and reduce the risk of slope instability.

[0080] When the temporary slope 2 needs to be further widened and filled, the geotextile 6 covering the slope surface can be removed, and the embankment 1 can be widened in layers. The freely hanging end of the embedded geogrid 3 can be stretched and laid flat in the soil layer of the corresponding width filling, and the other end of the embedded geogrid 3 can be embedded and fixed in the soil inside the temporary slope 2, which can effectively improve the connection integrity between the new and old embankments 1.

[0081] The operation of Railway 3-12 cannot be interrupted, so special attention must be paid to its safety during construction. Railway 1-10 and Railway 2-11 are new lines, and their construction and operation should be coordinated with the existing Railway 3-12 to ensure the safety and smoothness of the overall railway network.

[0082] The arc-shaped bending design of the geogrid 3 and the full coverage of the geotextile 6 significantly enhance the overall stability of the slope protection structure 2 and prevent landslides and collapses.

[0083] The preset arc-shaped bends and the stitching rods 9 simplify the installation process of the geogrid 3 and improve the construction efficiency.

[0084] The specific working principle is as follows:

[0085] After the slope 2 site is leveled and compacted, the first layer of reinforcement 8 is laid and fixed, and the inclusion 4 is placed on the side of the reinforcement 8 near the temporary slope 2. The reinforcement 8 is folded back to wrap the inclusion 4, and the folded end of the reinforcement 8 is fixed with a suture rod 9. The filler is layered on the geogrid 3 reinforcement 8, and it is rolled and compacted so that the top of the filler is flush with the top of the first layer of the inclusion 4. The embedded geogrid 3 is laid on the top of the inclusion 4, and the above steps are repeated to lay and fix the second layer of reinforcement 8, and the upper and lower layers of the inclusion 4 are connected by module connecting steel bars. While fixing the folded end of the geogrid 3 reinforcement 8 with a suture rod 9, the embedded geogrid 3 is fixed synchronously, and the other end of the embedded geogrid 3 is freely suspended on the slope surface. Repeat the above steps to lay until the top of the slope. A layer of geotextile 6 is added to the embedded geogrid 3 at the top of the slope, and the geotextile 6 covers from the top of the slope to the foot of the slope, and is fixed to the ground with saddle nails or covered with heavy objects at the foot of the slope.

[0086] When the roadbed is widened in steps, the geotextile 6 is removed. When the roadbed is widened in layers, the embedded geogrid 3 is stretched and laid flat in layers to strengthen the connection between the widened roadbed and the temporary slope 2.

[0087] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A permanent and temporary combined slope protection structure, comprising a slope (2) facing an open space and a line arranged on the slope (2), an embankment (1) for filling is arranged on one side of the slope (2), and a reinforcement structure is arranged on one side of the embankment (1); Features: The reinforcement structure comprises a geogrid (3) laid on the embankment (1) and an inclusion (4) included in the geogrid (3), wherein the inclusion (4) is provided in one or more pieces and is laid in sequence at a preset angle, and the outer side of the inclusion (4) is also covered with a layer of geotextile (6), and the geotextile (6) is spread flat along the free surface of the slope (2); The top surface of the embankment (1) is also paved with tie bars (8), which are one or more and overlapped at even intervals along the line direction. The force-bearing direction is laid perpendicular to the line direction and is fixed by fasteners after being laid flat.

2. The permanent and temporary combined slope protection structure according to claim 1 is characterized by: One end of the tie rod (8) extends to one side of the enveloping body (4) and is folded back along the outer side of the enveloping body (4) to envelop the enveloping body (4).

3. The permanent and temporary combined slope protection structure according to claim 1 is characterized by: The wrapping body (4) comprises a wrapping bag (41) and a filler (42) filled into the inner side of the wrapping bag (41); a frame (5) is further provided on the outer side of the wrapping bag (41); the frame (5) is in contact with the wrapping bag (41).

4. The permanent and temporary combined slope protection structure according to claim 3 is characterized by: The frame body (5) comprises an outer frame (51), the inner side of the outer frame (51) being roughened and fitted with the outer side of the wrapping bag (41).

5. The permanent and temporary combined slope protection structure according to claim 3 is characterized by: The wrapping bag (41) comprises a woven belt (412), wherein the woven belt is woven into a wrapping area (411), and the wrapping area (411) is adapted to fit the filler (42).

6. The permanent and temporary combined slope protection structure according to claim 4 is characterized by: The top of the outer frame (51) is provided with a fitting groove (52), a sealing cover (53) is installed at the fitting groove (52), the sealing cover (53) is arranged on the top of the enveloping body (4), one or more plug holes (54) are provided at the cover body of the sealing cover (53), and a connecting piece (7) is installed at the plug hole (54) for connecting the two outer frames (51).

7. The permanent and temporary combined slope protection structure according to claim 1 is characterized by: One end of the geogrid (3) is bent in an arc shape at a preset angle near the inclusion body (4), and a suture rod (9) is provided at the bent portion.

8. The permanent and temporary combined slope protection structure according to claim 1 is characterized by: One end of the geotextile (6) extends to the foot of the slope (2) and is pressed against one side of the slope (2) through a fixing member.

9. The permanent and temporary combined slope protection structure according to claim 1 is characterized by: The lines include Railway 1 (10), Railway 2 (11) and Railway 3 (12), and Railway 3 (12) is an existing railway.

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