Pile foundation beam roadbed filling device

Abstract

The utility model discloses a pile foundation joist road bed filling device, it includes retaining wall, the upper end fixed of retaining wall has a plurality of struts, and the strut is connected with the panel of its outside through pull rod, and the lower extreme of panel is connected with retaining wall, the inside filling of retaining wall has the earth filling, and the inside filling of panel has light soil, and light soil is located the upper portion of earth filling, and the soil engineering tendon band and steel wire tendon band are laid between retaining wall and slope from top to bottom, and the soil engineering tendon band and steel wire tendon band staggeredly lay, and the both ends of steel wire tendon band are fixed on retaining wall and slope respectively. Compared with prior art, the utility model discloses a panel is connected on retaining wall, and the panel is fixed on the strut of retaining wall upper end through pull rod, makes panel and retaining wall form integral structure, and the setting of steel wire tendon band makes retaining wall and slope connect into an organic whole, thereby making panel, retaining wall, slope and steel wire tendon band connect as a whole.

Description

Technical Field

[0001] This utility model relates to the field of road infrastructure technology, and in particular to a pile foundation support beam roadbed filling device. Background Technology

[0002] Steep embankment sections are typically treated using a combination of excavated steps and geogrids. However, this method has several limitations: First, the interfaces between the geogrid and the fill, as well as between the fill and the original foundation, are weak points, prone to slippage and detachment under significant shear forces. Second, rainwater infiltration significantly reduces the friction coefficient at the contact surfaces, greatly diminishing the reinforcing effect of the geogrid. It also increases soil density and pore water pressure, drastically increasing the sliding thrust. This is a direct cause of cracking and slippage. Third, for steep, high-fill embankment sections with steep ground, the cantilever is too high to be treated with independent gravity retaining walls or piles. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] Based on this, this utility model proposes a pile foundation supporting beam roadbed filling device to solve the problems of easy slippage and rainwater infiltration caused by using the step excavation + geogrid method in steep slope embankment sections.

[0005] (II) Technical Solution

[0006] To overcome or at least partially solve the above problems, this utility model provides a pile foundation support beam roadbed filling device, including a retaining wall. Multiple supports are fixed to the upper end of the retaining wall, and the supports are connected to an outer panel via tie rods. The lower end of the panel is engaged with the retaining wall. The inner side of the retaining wall is filled with backfill, and the inner side of the panel is filled with lightweight soil, which is located above the backfill. Multiple layers of geotextile strips and multiple layers of steel wire reinforcing strips are laid from top to bottom between the retaining wall and the slope. The geotextile strips and steel wire reinforcing strips are laid alternately, and the two ends of each steel wire reinforcing strip are fixed to the retaining wall and the slope, respectively.

[0007] Preferably, the geotextile strip is connected to its adjacent steel wire strip via a connecting rod.

[0008] Preferably, the upper end of the connecting rod is n-shaped, and the upper end of the connecting rod is engaged with the geotextile strip or steel wire strip.

[0009] Preferably, the steel wire strip is secured with a plurality of U-shaped nails, the openings of the U-shaped nails facing downwards.

[0010] Preferably, steps are provided on the slope, and the steel wire reinforcement strip is connected to the anchoring nails in the steps.

[0011] Preferably, the retaining wall is pre-embedded with tie bars, and the steel wire strip is connected to the tie bars.

[0012] Preferably, both ends of the geotextile strip are provided with reverse wrapping sections.

[0013] Preferably, the geotextile strip is secured with multiple U-shaped nails.

[0014] Preferably, the panel is composed of multiple retaining plates spliced ​​together, with two adjacent retaining plates on the top and bottom fixed by connecting bars, and two adjacent connecting bars on the horizontal side fixed to the support by tie rods.

[0015] Preferably, a U-shaped seat is pre-embedded in the retaining plate, and the two ends of the U-shaped seat are bent and fixed in the retaining plate. The upper end of the connecting bar is engaged with the U-shaped seat in the upper retaining wall, and the lower end is welded to the U-shaped seat in the lower retaining wall.

[0016] Preferably, one end of the tie rod hooks onto the connecting rib, and the other end is welded and fixed to the support column.

[0017] (III) Beneficial Effects

[0018] The pile foundation support beam roadbed filling device of this utility model has the following advantages: By snapping the panel onto the upper end of the retaining wall, and fixing the panel to the support column at the upper end of the retaining wall via tie rods, the panel and the retaining wall form an integral structure. Lightweight soil is placed on top of the fill, reducing the overall weight and effectively preventing rainwater from seeping into the fill. The combination of panel + support plate + lightweight soil on top of the retaining wall effectively reduces the pressure on the retaining wall. The steel wire reinforcement strip connects the retaining wall and the slope as a whole, reducing the problem of excessive bending moment of the retaining wall. The geotextile reinforcement strip is connected to the steel wire reinforcement strip via connecting rods, thus connecting the panel, retaining wall, slope, and steel wire reinforcement strip into a unified whole, which can better resist earth pressure and is less prone to slippage. Furthermore, the geotextile reinforcement strip and steel wire reinforcement strip are flexible structures that can adapt to certain foundation deformations and have good seismic performance. Attached Figure Description

[0019] The features and advantages of this utility model will be more clearly understood by referring to the accompanying drawings. The drawings are schematic and should not be construed as limiting the utility model in any way. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the present invention;

[0022] Figure 3 This is a partial structural schematic diagram of the present invention;

[0023] Figure 4This is a structural schematic diagram of the retaining wall of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure at the step of this utility model;

[0025] Figure 6 This is a structural schematic diagram of the steel wire reinforcing strip of this utility model;

[0026] Figure 7 This is a top view of the panel mounting structure of this utility model;

[0027] Figure 8 This is a rear view of the panel mounting structure of this utility model;

[0028] Figure 9 This is a schematic diagram of the installation structure of the U-shaped seat of this utility model;

[0029] Figure 10 This is a schematic diagram of the connecting rib of this utility model;

[0030] Figure 11 This is a schematic diagram of the connecting rod of this utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Retaining wall, 2. Support column, 3. Tie rod, 4. Panel, 5. Backfill, 6. Lightweight soil, 7. Geotextile strip, 8. Steel wire strip, 9. Connecting rod, 10. U-shaped nail, 11. Step, 12. Anchor nail, 13. Tie bar, 14. Connecting bar, 15. U-shaped seat, 16. Cover plate, 17. Pile foundation, 100. Reverse wrapping section, 200. Retaining plate. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0034] See attached document Figure 1-3This embodiment provides a pile foundation support beam roadbed filling device, including a retaining wall 1. Multiple supports 2 are fixed to the upper end of the retaining wall 1. The supports 2 are connected to a panel 4 on their outer side via tie rods 3. The lower end of the panel 4 is engaged with the retaining wall 1. The inner side of the retaining wall 1 is filled with backfill 5, and the inner side of the panel 4 is filled with lightweight soil 6, which is located above the backfill 5. Multiple layers of geotextile strips 7 and multiple layers of steel wire reinforcing strips 8 are laid from top to bottom between the retaining wall 1 and the slope. The geotextile strips 7 and steel wire reinforcing strips 8 are laid alternately, with both ends of the steel wire reinforcing strips 8 fixed to the retaining wall 1 and the slope respectively. The geotextile strips 7 are connected to their adjacent steel wire reinforcing strips 8 via connecting rods 9. In this invention, the lightweight soil 6 placed above the backfill 5 reduces the overall weight and effectively prevents rainwater from seeping into the backfill 5. The combination of panel 4, support plate, and lightweight soil 6 above the retaining wall 1 effectively reduces the pressure on the retaining wall 1. The steel wire reinforcement strip 8 connects the retaining wall 1 and the slope as a whole, reducing the problem of excessive bending moment of the retaining wall 1. The geotextile strip 7 is connected to the steel wire reinforcement strip 8 through the connecting rod 9, thus connecting the panel 4, retaining wall 1, slope, geotextile strip 7, and steel wire reinforcement strip 8 into a whole, which can better resist earth pressure. Secondly, the geotextile strip 7 and steel wire reinforcement strip 8 are flexible structures that can adapt to certain foundation deformations and have good seismic performance.

[0035] As another embodiment of this utility model: refer to the appendix Figure 11 The upper end of the connecting rod 9 is N-shaped and is engaged with the geotextile strip 7 or the steel wire reinforcing strip 8. Specifically, when the backfill 5 reaches the steel wire reinforcing strip 8, the connecting rod 9 is inserted into the backfill 5. The connecting rod 9 passes through the steel wire reinforcing strip 8 and the geotextile strip 7, with its bottom positioned below the geotextile strip 7 and its upper end engaged within the steel wire reinforcing strip 8. The connecting rod 9 connects the geotextile strip 7 and the steel wire reinforcing strip 8 together to resist backfill slippage. Alternatively, when the backfill 5 reaches the geotextile strip 7, the connecting rod 9 is inserted into the backfill 5. The connecting rod 9 passes through the geotextile strip 7 and the steel wire reinforcing strip 8, with its bottom positioned below the steel wire reinforcing strip 8 and its upper end engaged within the geotextile strip 7. The connecting rod 9 connects the geotextile strip 7 and the steel wire reinforcing strip 8 together to resist backfill slippage. This structural design facilitates the installation of the connecting rod 9.

[0036] As another embodiment of this utility model: refer to the appendix Figure 5 Multiple U-shaped nails 10 are fastened to the steel wire reinforcing strip 8, with the openings of the U-shaped nails 10 facing downwards. This structural design effectively increases the friction between the steel wire reinforcing strip 8 and the backfill soil 5; secondly, it facilitates construction.

[0037] One embodiment of fixing the steel wire reinforcement strip 8 to the slope: Steps 11 are provided on the slope, and the steel wire reinforcement strip 8 is connected to the anchor nails 12 in the steps 11. This structural design increases the stability of the retaining wall 1. Specifically, one end of the anchor nail 12 is fixed in the step 11, and the other end hooks onto the steel wire reinforcement strip 8, with a portion of the U-shaped nails 10 inserted into the step 11.

[0038] One embodiment of fixing the steel wire reinforcement strip 8 to the retaining wall 1: Refer to the attached document. Figure 4 The retaining wall 1 is pre-embedded with tie bars 13, and the steel wire reinforcing strip 8 is connected to the tie bars 13. This structural design facilitates construction. Specifically, one end of the tie bar 13 is pre-embedded in the retaining wall 1, and the other end is hooked to the steel wire reinforcing strip 8.

[0039] In another embodiment of this utility model, both ends of the geotextile strip 7 are provided with reverse wrapping sections 100 to provide stability for the roadbed fill 5. At the reverse wrapping section 100, the upper end of the connecting rod 9 is engaged with the upwardly bent portion of the reverse wrapping section 100.

[0040] In another embodiment of this utility model, multiple U-shaped nails 10 are snapped onto the geotextile strip 7. This structural design can effectively improve the friction between the geotextile strip 7 and the backfill 5; secondly, it facilitates construction.

[0041] For details, please refer to the appendix. Figure 6 The steel wire reinforcement strip 8 is in the shape of a grid.

[0042] As another embodiment of this utility model: refer to the appendix Figure 7 and attached Figure 8 Panel 4 is composed of multiple retaining plates 200 spliced ​​together. The retaining plates 200 on panel 4 are arranged in multiple rows and columns. Two adjacent retaining plates 200 are fixed together by connecting bars 14, and two adjacent connecting bars 14 in the horizontal direction are fixed to the support column 2 by tie rods 3. This structural design allows the upper and lower retaining plates 200 to be fixed to the support column 2 by connecting bars 14 and tie rods 3, thus enabling panel 4 to be quickly fixed to the support column 2.

[0043] Specifically, the upper end of the retaining wall 1 is provided with a slot, and the lower retaining plate 200 is inserted into the slot.

[0044] One embodiment of fixing the connecting rib 14 inside the retaining plate 200: Refer to the attached document. Figure 9 and attached Figure 10 A U-shaped seat 15 is pre-embedded within the retaining wall 200. The two ends of the U-shaped seat 15 are bent and fixed within the retaining wall 200. The upper end of the connecting bar 14 is engaged with the U-shaped seat 15 in the upper retaining wall, and the lower end of the connecting bar 14 is welded to the U-shaped seat 15 in the lower retaining wall. This structural design facilitates construction.

[0045] Specifically, a wire mesh is pre-embedded inside the retaining plate 200, and the U-shaped seat 15 is welded to the wire mesh, so that the U-shaped seat 15 can be more firmly fixed on the retaining plate 200, wherein the retaining plate 200 is made of concrete.

[0046] One installation method for tie rod 3: one end of tie rod 3 hooks onto connecting rib 14, and the other end is welded and fixed to support column 2. This structural design facilitates construction.

[0047] Specifically, support 2 is a corner plate.

[0048] As another embodiment of this utility model: a cover plate 16 is provided on the top of the lightweight soil 6 to perform a weighting treatment on the lightweight soil 6.

[0049] As another embodiment of this utility model: a pile foundation 17 is fixed below the retaining wall 1, so that the retaining wall 1 is built on a "bench" composed of the pile foundation 17 and the supporting beam.

[0050] In this invention, panel 4 is snapped onto the upper end of retaining wall 1, and panel 4 is fixed to the support column 2 at the upper end of retaining wall 1 by tie rod 3, thus forming an integral structure between panel 4 and retaining wall 1. Lightweight soil 6 is placed above the fill 5 to reduce the overall weight and effectively prevent rainwater from seeping into the fill 5. The combination of panel 4, support plate, and lightweight soil 6 above retaining wall 1 effectively reduces the pressure on retaining wall 1. The steel wire reinforcement strip 8 connects retaining wall 1 and slope as a whole, reducing the problem of excessive bending moment of retaining wall 1. Geotextile reinforcement strip 7 is connected to steel wire reinforcement strip 8 by connecting rod 9, thus connecting panel 4, retaining wall 1, slope, geotextile reinforcement strip 7, and steel wire reinforcement strip 8 into a whole, which can better resist soil pressure. Furthermore, geotextile reinforcement strip 7 and steel wire reinforcement strip 8 are flexible structures that can adapt to certain foundation deformations and have good seismic performance.

[0051] Finally, the method of this utility model is only a preferred embodiment and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

[0052] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A pile foundation supporting beam roadbed filling device, characterized in that, The structure includes a retaining wall, the upper end of which is fixed with multiple supports. The supports are connected to an outer panel via tie rods, and the lower end of the panel is engaged with the retaining wall. The inner side of the retaining wall is filled with backfill, and the inner side of the panel is filled with lightweight soil, which is located above the backfill. Multiple layers of geotextile strips and multiple layers of steel wire strips are laid from top to bottom between the retaining wall and the slope. The geotextile strips and steel wire strips are laid alternately, and the two ends of the steel wire strips are fixed to the retaining wall and the slope, respectively.

2. The pile foundation support beam roadbed filling device according to claim 1, characterized in that, The geotextile strip is connected to its adjacent steel wire strip by a connecting rod.

3. The pile foundation support beam roadbed filling device according to claim 2, characterized in that, The upper end of the connecting rod is n-shaped, and the upper end of the connecting rod is snapped into the geotextile strip or steel wire strip.

4. The pile foundation support beam roadbed filling device according to claim 3, characterized in that, The steel wire strip is secured with multiple U-shaped nails, with the openings of the U-shaped nails facing downwards.

5. The pile foundation support beam roadbed filling device according to claim 4, characterized in that, The slope is provided with steps, and the steel wire reinforcement strip is connected to the anchoring nails in the steps.

6. The pile foundation support beam roadbed filling device according to claim 5, characterized in that, The retaining wall is pre-embedded with tie bars, and the steel wire strip is connected to the tie bars.

7. The pile foundation support beam roadbed filling device according to claim 6, characterized in that, Both ends of the geotextile strip are provided with reverse wrapping sections.

8. The pile foundation support beam roadbed filling device according to claim 1, characterized in that, The panel is composed of multiple retaining plates spliced ​​together. Two adjacent retaining plates are fixed by connecting bars, and two adjacent connecting bars in the horizontal direction are fixed to the support by tie rods.

9. The pile foundation support beam roadbed filling device according to claim 8, characterized in that, The retaining plate has a U-shaped seat embedded in it. The two ends of the U-shaped seat are bent and fixed inside the retaining plate. The upper end of the connecting bar is engaged with the U-shaped seat in the upper retaining wall, and the lower end is welded to the U-shaped seat in the lower retaining wall.

10. The pile foundation support beam roadbed filling device according to claim 9, characterized in that, One end of the tie rod hooks onto the connecting bar, and the other end is welded and fixed to the support column.

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