CN216379625U - Rubble gravity type retaining wall structure - Google Patents
Rubble gravity type retaining wall structure Download PDFInfo
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- CN216379625U CN216379625U CN202122327511.2U CN202122327511U CN216379625U CN 216379625 U CN216379625 U CN 216379625U CN 202122327511 U CN202122327511 U CN 202122327511U CN 216379625 U CN216379625 U CN 216379625U
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Abstract
The utility model discloses a rubble gravity type retaining wall structure which comprises a retaining wall, wherein a retaining wall foundation adopts an ash soil cushion layer, and a clay water-resisting layer, a sand and pebble reverse filtering layer and a rammed and filled cement soil water-resisting layer are sequentially arranged at the rear part of the retaining wall from top to bottom; the sand-gravel reverse filtering layer comprises a horizontal part and a vertical part, wherein the horizontal part is positioned at the top of the rammed and filled cement soil water-resisting layer, the vertical part is tightly attached to the rear part of the retaining wall, and the soil filled behind the wall is 1:7 cement soil. By arranging the sand-gravel reverse filter layer and the permeable geotextile, the water permeability of the retaining wall is enhanced, rainwater or accumulated water and the like are quickly and effectively discharged, and the possibility that the drainage pipe is blocked by coarse and fine granular soil bodies is effectively reduced; by arranging the rammed and filled cement soil water-resisting layer, the possibility that rainwater or accumulated water seeps downwards to soak and soften the retaining wall foundation after the retaining wall is effectively reduced.
Description
Technical Field
The utility model belongs to the technical field of geotechnical engineering slope protection, and relates to a rubble gravity type retaining wall structure.
Background
The gravity retaining wall is built for preventing rock and earth mass from collapsing and sliding, and is a wall type structure mainly bearing lateral soil pressure, so that the self gravity of the retaining wall is used for maintaining the stability of the retaining wall under the action of the soil pressure. The support is widely used for supporting embankment filling soil or cutting slopes, abutment tunnel portals, river banks and the like in highway engineering; the method is widely applied to supporting and retaining protection of rock and soil slopes in industrial and civil building engineering.
The existing gravity type retaining wall structure has poor performance of an inverted filter bag behind the retaining wall, and can often cause the problem of blockage of a drain pipe, cause unsmooth discharge of rainwater or accumulated water and the like behind the retaining wall, gather in soil filling behind the retaining wall, increase the soil pressure behind the retaining wall, infiltrate and soften the retaining wall foundation at serious times, and form potential safety hazards.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a rubble gravity type retaining wall structure, which solves the problems of unsmooth drainage of rainwater or accumulated water and the like and infiltration soaking softening of retaining wall foundations of the existing gravity type retaining wall structure.
The utility model adopts the technical scheme that the rubble gravity retaining wall structure comprises a retaining wall, wherein a foundation of the retaining wall adopts an ash soil cushion layer, and a clay water-resisting layer, a sand and pebble reverse filtering layer and a rammed and filled cement soil water-resisting layer are sequentially arranged at the rear part of the retaining wall from top to bottom; the sand-gravel reverse filtering layer comprises a horizontal part and a vertical part, wherein the horizontal part is positioned at the top of the rammed and filled cement soil water-resisting layer, the vertical part is tightly attached to the rear part of the retaining wall, and the soil filled behind the wall is 1:7 cement soil.
The top of the retaining wall is 0.6m wide, the chest-slope ratio of the wall body is 1:0.3, the height is set to be 6.4m, and the bottom of the retaining wall is provided with a reverse slope of 0.15: 1; and setting M10 mortar coping with the thickness of 10cm at the top of the retaining wall.
The thickness of the lime soil cushion layer is more than 500mm, and the compaction coefficient is not less than 0.97.
The expansion joint is kept in every 10-20 m of the retaining wall, and the width of the expansion joint is 3 cm.
The retaining wall adopts a PVC drain pipe with the pipe diameter of 100mm for draining, and the spacing between drain holes is 2 m; the arrangement is in a quincunx shape, the lowest drain pipe is arranged at the bottom of the horizontal sand and pebble reverse filter layer, holes are formed in the drain pipes, and the back of each wall breast wall is reserved with 10 cm.
The thickness of the horizontal part and the vertical part of the sand-gravel reverse filter layer are both 500mm, the outer side of the sand-gravel reverse filter layer is paved with permeable geotextile, and 300g/m is paved between the sand-gravel reverse filter layer and the retaining wall2And (4) reverse filtering the geotextile.
The thickness of the clay water-resisting layer is 500mm, and the top of the clay water-resisting layer is paved with impermeable geotextile.
The utility model has the beneficial effects that:
by arranging the sand-gravel reverse filter layer and the permeable geotextile, the water permeability of the retaining wall is enhanced, rainwater or accumulated water and the like are quickly and effectively discharged, and the possibility that the drainage pipe is blocked by coarse and fine granular soil bodies is effectively reduced; by arranging the rammed and filled cement soil water-resisting layer, the possibility that rainwater or accumulated water seeps downwards to soak and soften the retaining wall foundation after the retaining wall is effectively reduced. When the vertical filling and forming of the sand and gravel inverted filter layer are difficult, the sand and gravel inverted filter layer can be formed by adopting a woven bag or a geotextile bag.
Drawings
Fig. 1 is a schematic structural view of the rubble gravity retaining wall structure of the present invention.
In the figure, 1, impermeable geotextile, 2, mortar coping, 3, clay water-resisting layer, 4, permeable geotextile, 5, PVC drain pipe, 6, retaining wall, 7, sand and gravel reverse filtering layer, 8, rammed and filled cement soil water-resisting layer, 9, lime soil cushion layer and 10, reverse filtering geotextile.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the rubble gravity retaining wall structure comprises a retaining wall 6, wherein a soil cement cushion 9 is adopted as a foundation of the retaining wall 6, and a clay water-resisting layer 3, a sandy gravel reverse filtering layer 7 and a rammed and filled cement soil water-resisting layer 8 are sequentially arranged at the rear part of the retaining wall 6 from top to bottom; the sand-gravel reverse filtering layer 7 comprises a horizontal part and a vertical part, wherein the horizontal part is positioned at the top of the rammed and filled cement soil water-resisting layer 8, the vertical part is tightly attached to the rear part of the retaining wall 6, and the filling behind the wall adopts 1:7 cement soil.
The top of the retaining wall 6 is 0.6m wide, the chest-slope ratio of the wall body is 1:0.3, the height is set to be 6.4m, and the bottom of the retaining wall 6 is provided with a reverse slope of 0.15: 1; and M10 mortar coping with the thickness of 10cm is arranged at the top of the retaining wall 6.
The thickness of the lime soil cushion layer 9 is more than 500mm, and the compaction coefficient is not less than 0.97.
The expansion joint is reserved in each 10-20 m of the retaining wall 6, and the width of the expansion joint is 3 cm.
The retaining wall 6 adopts PVC drain pipes 5 with the pipe diameter of 100mm to drain water, the distance between drain holes is 2m, the drain pipes are arranged in a quincunx shape, the lowest drain pipe is arranged at the bottom of the horizontal sand and pebble inverted filter layer 7, holes are formed in the pipes, and the back of the wall breast wall is reserved with 10cm respectively.
The thickness of the horizontal part and the thickness of the vertical part of the sand-gravel reverse filter layer 7 are both 500mm, the permeable geotextile 4 is laid on the outer side of the sand-gravel reverse filter layer 7, and 300g/m is laid between the sand-gravel reverse filter layer 7 and the retaining wall2The reverse filter geotextile 10.
The thickness of the clay water-resisting layer 3 is 500mm, and the impermeable geotextile 1 is laid on the top of the clay water-resisting layer.
The retaining wall 6 is made of MU40 stone through M10 mortar, the compression strength of the stone is not less than 40MPa, and the thickness of the stone is not less than 20 cm. And (4) plastering and pointing by using M10 mortar after the retaining wall is built. The retaining wall at the terrain change part is in stable transition and is tightly connected.
When the vertical filling and forming of the sand-gravel reverse filtering layer 7 are difficult, woven bags or soil engineering bagged sand-gravel can be adopted for stacking.
Claims (7)
1. The rubble gravity type retaining wall structure is characterized by comprising a retaining wall (6), wherein a lime soil cushion layer (9) is adopted for a foundation of the retaining wall (6), and a clay water barrier layer (3), a sand and pebble reverse filtering layer (7) and a rammed and filled cement soil water barrier layer (8) are sequentially arranged at the rear part of the retaining wall (6) from top to bottom; the sand and gravel reverse filtering layer (7) comprises a horizontal part and a vertical part, wherein the horizontal part is positioned at the top of the rammed and filled cement soil water-resisting layer (8), the vertical part is tightly attached to the rear part of the retaining wall (6), and the filling soil behind the wall adopts 1:7 cement soil.
2. The rubble gravity type retaining wall structure according to claim 1, wherein the top of the retaining wall (6) is 0.6m wide, the breast-to-slope ratio of the wall body is 1:0.3, the height is set to 6.4m, and the bottom of the retaining wall (6) is reverse-sloped by 0.15: 1; and M10 mortar coping with the thickness of 10cm is arranged at the top of the retaining wall (6).
3. The rubble gravity retaining wall structure according to claim 1, wherein the thickness of the lime soil pad layer (9) is more than 500mm, and the compaction factor is not less than 0.97.
4. The rubble gravity type retaining wall structure according to claim 1, wherein an expansion joint is reserved in each 10-20 m of the retaining wall (6), and the width of the expansion joint is 3 cm.
5. The rubble gravity retaining wall structure according to claim 1, wherein the retaining wall (6) is sluiced by PVC drainpipes (5) with a pipe diameter of 100mm, the interval between the sluiced holes is 2m, the sluiced holes are arranged in a quincunx shape, and the lowest drainpipe (5) is arranged at the bottom of the horizontal sand and pebble inverted filter (7).
6. A rubble gravity retaining wall structure according to claim 1, wherein the thickness of the horizontal part and the vertical part of the sand and pebble inverted filter (7) are both 500mm, the outside of the sand and pebble inverted filter (7) is laid with the permeable geotextile (4), and 300g/m is laid between the sand and pebble inverted filter (7) and the retaining wall (6)2A reverse filter geotextile (10).
7. The rubble gravity retaining wall structure according to claim 1, wherein the clay water barrier (3) has a thickness of 500mm and an impermeable geotextile (1) is laid on top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122327511.2U CN216379625U (en) | 2021-09-26 | 2021-09-26 | Rubble gravity type retaining wall structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122327511.2U CN216379625U (en) | 2021-09-26 | 2021-09-26 | Rubble gravity type retaining wall structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216379625U true CN216379625U (en) | 2022-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122327511.2U Active CN216379625U (en) | 2021-09-26 | 2021-09-26 | Rubble gravity type retaining wall structure |
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| CN (1) | CN216379625U (en) |
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2021
- 2021-09-26 CN CN202122327511.2U patent/CN216379625U/en active Active
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