Foot fixing supporting structure for high fill slope
By adopting anti-sliding piles, buttress retaining walls and anchor cables in high-fill slopes, the problem of insufficient foundation bearing capacity and anti-slip stability is solved, and effective drainage and overall stability are improved.
Patent Information
- Application Number
- CN202421671240.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-16
AI Technical Summary
The bearing capacity and anti-slip stability of the foundation platform of the high-fill slope in the slope area are insufficient, and there are poor drainage problems after filling, resulting in deformation of the retaining wall and instability of the filling.
The firm foot support structure including anti-sliding piles, buttress retaining walls and anchor cables is adopted. The foundation bearing capacity and anti-sliding stability are improved by setting up anti-sliding piles and buttress retaining walls, and effective drainage is achieved through structures such as anchor cable embedded holes and filter release bodies.
It improves the overall stability of the high-fill slope, solves the problem of inconsistency between anti-sliding piles and baffles, avoids the dissipation of prestress of anchor cables, and is universal and suitable for different thrust conditions.
Smart Images
Figure CN222796503U_ABST
Abstract
Description
Technical Field
[0001] The utility model patent belongs to the technical field of slope retaining structure, and specifically relates to a high fill slope fixed foot support structure. Background Art
[0002] At present, the lower part of the high fill slope is mainly protected by retaining walls and anti-slide piles, and the upper part is gradually backfilled with graded reinforced soil. If the retaining wall or anti-slide pile at the foot of the slope cannot meet the stability of the overall fill slope, anchors are added to the retaining wall or anti-slide piles; or the role of anchor cables, retaining walls, and anti-slide piles are considered together during the support design. The specific implementation process has extremely high requirements for construction, and there are also the following disadvantages:
[0003] 1. When designing high fill in a slope area, the bearing capacity and anti-slip stability of the foundation platform are the key to the safety of the entire fill slope. The use of ordinary structures such as gravity retaining walls, counterweight retaining walls, and buttress retaining walls all have the problem of insufficient bearing capacity of the lower soil on the outside of the structure and insufficient anti-slip stability under fill loading conditions. If the foundation of the above three commonly used retaining wall structures is deepened to ensure the bearing capacity of the outer foundation, it is necessary to widen the foundation construction platform and increase the slope excavation volume, resulting in the stability of the slope inside the excavated foundation platform.
[0004] 2. After filling, due to the cover effect of the filling body surface and the horizontal drainage problem, a large amount of surface water is likely to infiltrate, soaking and softening the original ground and retaining wall foundation, causing deformation of the retaining wall and instability of the filling. Therefore, the construction technology of conventional retaining walls is insufficient for the internal drainage of high filling.
[0005] 3. The stability of the foot support of high fill projects is the basis for ensuring the overall stability of the upper fill. Therefore, anchor reinforcement is often added on the basis of ordinary structures. It is implemented after the later fill is completed, and the construction period is long. If anchor cables are implemented before or in the middle of the fill, due to the filling loading and soil consolidation settlement, the anchor cables are subjected to the vertical stress inside the soil, which increases the tension of the anchor cables and eventually causes the support project to deform and fail to one side of the slope.
[0006] Therefore, this paper proposes a high fill slope fixed foot support structure. Utility Model Content
[0007] In order to solve the above technical problems, the utility model provides a fixed-foot support structure that improves the foundation bearing capacity of the outer side of the excavation surface, ensures the overall anti-slip stability of the slope, and at the same time constructs anchor cables to increase the prestressing of the support structure, effectively drains the seepage pore water of the fill body, makes the fill slope stable as a whole, and takes into account the beautiful and coordinated appearance of the structure.
[0008] In order to achieve the above technical effect, the utility model is realized through the following technical scheme: a high fill slope footing support structure, comprising a plurality of anti-slip piles and buttress-type retaining walls arranged at the slope excavation platform and corresponding to the length and height of the slope, the buttress-type retaining wall also comprising a wall panel, a wall toe plate, buttresses and a wall heel plate, the anti-slip piles also comprising an extended part and an embedded part, a wall toe plate is arranged at the bottom between the piles of the extended part of the anti-slip piles and a wall panel is arranged at the rear side between the piles, the buttress is connected to the rear side of the anti-slip piles, and the bottom of the rear side of the wall panel and the bottom of the buttress are both provided with a wall heel plate; a filter body is arranged between the buttresses above the wall heel plate; a pile top crown beam is arranged on the top of the anti-slip pile; an anchor cable pre-embedded hole is obliquely arranged in the anti-slip pile and the buttress behind it, and an anchor cable embedded in the slope is arranged in the anchor cable pre-embedded hole; a plurality of high fill piles are stacked in sequence on the original slope line behind the anti-slip pile and the buttress-type retaining wall.
[0009] Preferably, the slope ratio of the clearing line on the rear slope of the buttress is 1:1.
[0010] Preferably, the length of the anti-slip piles is set to 14-16 m, the protruding part of the anti-slip piles is set to 5-8 m, and the distance between the anti-slip piles is set to 4-6 m.
[0011] Preferably, a plurality of drainage holes are arranged in a matrix on the wall panel in front of the filter body, and drainage holes with a diameter larger than the drainage holes are arranged at the bottom of the wall panel.
[0012] Preferably, the vertical spacing of the drainage holes is set to 1m, and the horizontal spacing is set to 1.5m.
[0013] Preferably, 2-3 anchor cable pre-buried holes are arranged from top to bottom, and the anchor cable pre-buried holes are at an angle of 25° to 30° to the slope excavation platform.
[0014] Preferably, the material for making the anchor cable pre-buried hole is set to be PVC material.
[0015] Preferably, the length of the anchor cable is greater than 12m.
[0016] Preferably, the front side of the high fill pile, the front side of the wall toe plate and the front side of the extended part of the anti-slip pile are all provided with a water ditch.
[0017] Preferably, the slope ratio of the front side of the high fill pile is set to 1:0.5.
[0018] The beneficial effects of the utility model are:
[0019] The structure solves the problem of back filtration and drainage at the foot of high fill slopes, and can timely filter out the slope water in the stress concentration area at the foot of the slope and the pore water seeping from the upper soil, thereby improving the overall stability of the fill slope; it solves the problem of overall incoordination between anti-slide piles, baffles and fill settlement; buttresses are used as the protective structure of the anchor cable, which effectively solves the problem of prestress dissipation of the anchor cable due to uneven fill settlement; the structure makes the construction of high fill slopes safer and faster, and can effectively improve the overall stability of the slope, thereby making the upper fill area more stable and reliable; at the same time, the structure is universal and can be used when the fill slope has a large thrust. When the thrust is small, the cross-section of the anti-slide pile can be reduced. Therefore, as long as it involves a high fill slope, this structural model can be applied for overall stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for describing the embodiment will be briefly introduced below. Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.
[0021] Figure 1 It is a top view of the anti-sliding pile and buttress retaining wall of the utility model;
[0022] Figure 2 For this utility model Figure 1 A is a cross-sectional schematic diagram;
[0023] Figure 3 For this utility model Figure 1 Middle B is a cross-sectional schematic diagram;
[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0025] 1. Excavation platform; 2. Anti-slip piles; 3. Wall panels; 4. Wall toe boards; 5. Buttresses; 6. Wall heel boards; 7. Extended parts; 8. Embedded parts; 9. Crown beams on top of piles; 10. High fill piles; 11. Drain holes; 12. Drain holes; 13. Pre-buried holes for anchor cables; 14. Anchor cables; 15. Ditches; 16. Filter bodies. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. Example 1
[0027] like Figures 1 to 3As shown, in this embodiment, the prior art has the following problems: the inventors found that the high fill slope in the prior art has problems such as insufficient stability at the slope foot and reverse filtration and drainage at the slope foot;
[0028] Therefore, the inventor provides a high fill slope footing support structure, including a plurality of anti-slip piles 2 and a buttress retaining wall arranged at a slope excavation platform 1 and corresponding to the length and height of the slope, wherein the buttress retaining wall further includes a wall panel 3, a wall toe plate 4, a buttress 5, and a wall heel plate 6, wherein the anti-slip pile 2 further includes an extended portion 7 and an embedded portion 8, wherein the bottom of the extended portion 7 of the anti-slip pile 2 is provided with a wall toe plate 4 and the rear side of the pile is provided with a wall panel 3, and the rear side of the anti-slip pile 2 is connected with a buttress 5, A wall heel plate 6 is provided at the bottom of the rear side of the wall panel 3 and the bottom of the buttress 5; a filter body 16 is provided between the buttresses 5 above the wall heel plate 6; a pile top crown beam 9 is provided on the top of the anti-slip pile 2; anchor cable pre-embedded holes 13 are obliquely provided in the anti-slip pile 2 and the buttress 5 behind it, and anchor cables 14 embedded in the slope are provided in the anchor cable pre-embedded holes 13; a number of high fill piles 10 are stacked in sequence on the original slope line behind the anti-slip pile 2 and the buttress retaining wall.
[0029] The effects are as follows: the structure solves the problem of back filtration and drainage at the foot of the high fill slope, and can timely filter out the slope water accumulated in the stress concentration area at the foot of the slope and the pore water seeping from the upper soil, thereby improving the overall stability of the fill slope; the problem of overall incoordination between the anti-slip piles 2, the baffles and the fill settlement is solved; the buttress 5 is used as the protective structure of the anchor cable 14, which effectively solves the problem of prestress dissipation of the anchor cable 14 caused by uneven fill settlement; the structure makes the construction of the high fill slope safer and faster, and can effectively improve the overall stability of the slope, thereby making the upper fill area more stable and reliable; at the same time, the structure is universal, and can be used when the fill slope has a large thrust, and the cross-section of the anti-slip pile 2 can be reduced when the thrust is small. Therefore, as long as it involves a high fill slope, this structural model can be applied for overall stability.
[0030] Furthermore, the slope ratio of the clearing line on the rear side slope of the buttress 5 is 1:1.
[0031] Furthermore, the length of the anti-slip pile 2 is set to 14-16 m, the protruding portion 7 of the anti-slip pile 2 is set to 5-8 m, and the distance between the anti-slip piles 2 is set to 4-6 m.
[0032] Furthermore, a plurality of drainage holes 12 are arranged in a matrix on the wall panel 3 in front of the filter body, and drainage holes 11 having a diameter larger than that of the drainage holes 12 are arranged at the bottom of the wall panel 3.
[0033] Furthermore, the vertical spacing of the drainage holes 12 is set to 1 m, and the horizontal spacing is set to 1.5 m.
[0034] Furthermore, 2-3 anchor cable pre-buried holes 13 are arranged from top to bottom, and the anchor cable pre-buried holes 13 are at an angle of 25° to 30° to the slope excavation platform 1 .
[0035] Furthermore, the anchor cable pre-buried hole 13 is made of PVC material.
[0036] Furthermore, the length of the anchor cable 14 is greater than 12 m.
[0037] Furthermore, water ditches 15 are provided on the front side of the high fill pile 10 , the front side of the wall toe plate 4 and the protruding portion 7 of the anti-sliding pile 2 .
[0038] Furthermore, the slope ratio of the front side of the high fill pile 10 is set to 1:0.5. Example 2
[0039] like Figures 1 to 3 As shown, based on the above embodiments, this embodiment provides a construction process of the slope fixing foot support structure:
[0040] S1, first construct anti-sliding piles 2 at the slope excavation platform 1, and at the same time, reserve anchor cable 14 holes on the anti-sliding piles 2;
[0041] S2, then, the buttress type retaining wall is constructed, including the buttress 5 foundation construction, the buttress 5 reserved anchor cable 14 holes, and the filter body 16 construction behind the pile and between the buttress 5;
[0042] S3, finally, the geogrid behind the pile is rolled upward layer by layer to form a high fill pile 10, and the anchor cable 14 is constructed to apply a small prestress. Finally, after the high fill construction is completed, the anchor cable 14 is applied with prestress for locking.
[0043] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0044] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A high fill slope footing support structure, comprising a plurality of anti-slide piles (2) arranged at a slope excavation platform (1) and corresponding to the length and height of the slope, and a buttress retaining wall, wherein the buttress retaining wall further comprises a wall panel (3), a wall toe plate (4), a buttress (5), and a wall heel plate (6), characterized in that: The anti-sliding pile (2) further comprises an extended portion (7) and an embedded portion (8); a wall toe plate (4) is arranged at the bottom of the pile between the extended portion (7) of the anti-sliding pile (2), and a wall panel (3) is arranged at the rear side of the pile between the piles; a buttress (5) is connected to the rear side of the anti-sliding pile (2); a wall heel plate (6) is arranged at the rear bottom of the wall panel (3) and the bottom of the buttress (5); a filter body (16) is arranged between the buttress (5) above the wall heel plate (6); a pile top crown beam (9) is arranged on the top of the anti-sliding pile (2); anchor cable pre-embedded holes (13) are obliquely arranged in the anti-sliding pile (2) and the buttress (5) behind them, and anchor cables (14) embedded in the slope are arranged in the anchor cable pre-embedded holes (13); a plurality of high fill piles (10) are sequentially stacked on the original slope line behind the anti-sliding pile (2) and the buttress-type retaining wall.
2. A high fill slope fixing support structure according to claim 1, characterized in that: The slope ratio of the clearing line on the rear side slope of the buttress (5) is 1:
1.
3. A high fill slope fixing support structure according to claim 1, characterized in that: The length of the anti-slip pile (2) is set to 14-16 m, the protruding portion (7) of the anti-slip pile (2) is set to 5-8 m, and the distance between the anti-slip piles (2) is set to 4-6 m.
4. A high fill slope fixing support structure according to claim 1, characterized in that: A plurality of drainage holes (12) are arranged in a matrix on the wall panel (3) in front of the filter body, and drainage holes (11) having a diameter larger than the drainage holes (12) are arranged at the bottom of the wall panel (3).
5. A high fill slope fixing support structure according to claim 4, characterized in that: The vertical spacing of the drainage holes (12) is set to 1 m, and the horizontal spacing is set to 1.5 m.
6. A high fill slope fixing support structure according to claim 1, characterized in that: The anchor cable pre-embedded holes (13) are provided in 2-3 numbers from top to bottom, and the anchor cable pre-embedded holes (13) are at an angle of 25° to 30° to the slope excavation platform (1).
7. A high fill slope fixing support structure according to claim 6, characterized in that: The anchor cable pre-buried hole (13) is made of PVC material.
8. The high fill slope fixing support structure according to claim 1 is characterized in that: The length of the anchor cable (14) is greater than 12 m.
9. The high fill slope fixing support structure according to claim 1, characterized in that: The front side of the high fill pile (10), the wall toe plate (4) and the front side of the extended portion (7) of the anti-slip pile (2) are all provided with a water ditch (15).
10. The high fill slope fixing support structure according to claim 1, characterized in that: The slope ratio of the front side of the high fill pile (10) is set to 1:0.5.