CN115897318A - Ecological restoration method for partial collapse of semi-excavated and semi-filled road - Google Patents
Ecological restoration method for partial collapse of semi-excavated and semi-filled road Download PDFInfo
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- CN115897318A CN115897318A CN202211217891.7A CN202211217891A CN115897318A CN 115897318 A CN115897318 A CN 115897318A CN 202211217891 A CN202211217891 A CN 202211217891A CN 115897318 A CN115897318 A CN 115897318A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000002689 soil Substances 0.000 claims abstract description 42
- 239000006260 foam Substances 0.000 claims abstract description 28
- 239000011152 fibreglass Substances 0.000 claims abstract description 8
- 239000004567 concrete Substances 0.000 claims abstract description 7
- 239000004033 plastic Substances 0.000 claims description 16
- 229920003023 plastic Polymers 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 10
- 239000011380 pervious concrete Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000004088 foaming agent Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000005056 compaction Methods 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention discloses an ecological restoration method for partial collapse of a half-excavated and half-filled road, which comprises the following steps of: s01, adopting a transverse glass fiber reinforced plastic anchor rod to temporarily support a collapsed surface of an original road, fastening a foam light soil light retaining wall with an original foundation through a vertical prestressed anchor rod at the boundary line position of the original road, and fixedly connecting the end part of the transverse glass fiber reinforced plastic anchor rod exposed out of the collapsed surface with the foam light soil light retaining wall; s02, sequentially filling a supporting layer, an EPS light backfill layer and a permeable concrete layer between the foam light soil light retaining wall and the collapsed surface from bottom to top in a layered mode. The method aims to solve the problems that in the prior art, when a high embankment side slope is used, firstly, the foundation stress can be disturbed, the landslide is possible to collapse in the construction process, and secondly, the requirements on the pile length and the embedding depth of the slide-resistant pile are high, so that the construction cost is overhigh.
Description
Technical Field
The invention relates to an ecological restoration method for partial collapse of a half-excavated and half-filled road, belonging to the technical field of geotechnical engineering.
Background
The construction of the highway, the railway and other traffic engineering in China develops at a high speed in more than thirty years, particularly in the western mountainous area. A lot of high embankments and high cutting roads are generated to meet the overall linear requirements of the roads, the road collapse of the high fill embankments is caused by the earthquake action in local areas and the scouring of local extra-large rainfall, and once the road collapses, not only is the traffic unsmooth, but also serious life and property losses can be caused.
The height of a high embankment side slope reaches more than ten meters, conventional small and medium retaining walls cannot meet design requirements, large retaining walls are needed, anti-slide pile holes need to be drilled when the large retaining walls are used for repairing collapsed pavements, firstly, disturbance can be caused to foundation stress when anti-slide piles are drilled, the construction process is possible to collapse on a landslide, and secondly, requirements on pile length and embedment depth of the anti-slide piles are high, so that construction cost is overhigh. Therefore, a construction scheme with small disturbance to foundation stress and low engineering cost is urgently needed.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides an ecological restoration method for partial collapse of a semi-excavated and semi-filled road, and overcomes the defects of the prior art.
The technical scheme of the invention is as follows: an ecological restoration method for partial collapse of a semi-excavated semi-filled road, the method comprising the steps of:
s01, adopting a transverse glass fiber reinforced plastic anchor rod to temporarily support a collapsed surface of an original road, fastening a foam light soil light retaining wall with an original foundation through a vertical prestressed anchor rod at the boundary line position of the original road, and fixedly connecting the end part of the transverse glass fiber reinforced plastic anchor rod exposed out of the collapsed surface with the foam light soil light retaining wall;
s02, sequentially filling a supporting layer, an EPS light backfill layer and a permeable concrete layer between the foam light soil light retaining wall and the collapsed surface from bottom to top in a layered mode.
Further, the foamed light soil light retaining wall comprises a foundation and a wall body, wherein the foundation is poured by C30 reinforced concrete, the thickness of the foundation is 30cm, and a reinforcing mesh with the thickness of 8@10cm multiplied by 10cm is arranged at 1/2 position in the plate; and (5) pouring the wall body in layers.
Furthermore, the material of the foam lightweight soil retaining wall comprises concrete without coarse aggregate, a foaming agent is blended in the concrete, the volume weight of the foam lightweight soil is 8kN/m < 3 >, and the cubic compressive strength is not less than 1.5MPa.
Furthermore, a drain hole with the diameter of 100mm is preset in the wall body and penetrates through the left side and the right side of the wall body.
Furthermore, n steel-plastic geogrids are arranged in the supporting layer in a layered mode, n is a positive integer larger than or equal to 1, the distance between every two adjacent steel-plastic geogrids is 80cm, filling materials are adopted among the steel-plastic geogrids and poured along the wall body in a layered mode and filled in the layered mode, the filling materials are medium-density to dense broken stone earth, then compaction is carried out, and the steel-plastic geogrids are parallel to the horizontal plane.
Further, the end part of the steel-plastic geogrid extends into the foam lightweight soil retaining wall.
Further, the thickness of the EPS light backfill layer is more than 50cm.
Furthermore, the pervious concrete layer is connected with the undisrupted roadbed through steel bars, and the longitudinal distance is 30cm, so that an integral pavement is formed.
Furthermore, the light retaining wall of the foamed light soil is in a step shape, greening geocell is arranged on the upper surface of the step of the light retaining wall of the foamed light soil, and planting soil is filled in the greening geocell.
The invention has the beneficial effects that: compared with the prior art, the invention uses the light retaining wall of the foam light soil, so that the extrusion of the light retaining wall of the foam light soil to the foundation is reduced, and the vertical prestressed anchor rods can be used without using the anti-slide piles, so that the scheme basically has no disturbance to the foundation and has safe and reliable construction.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
In order to better understand the technical scheme, the technical scheme is described in detail in the following with reference to the attached drawings and the detailed description.
Referring to fig. 1, where 1 in fig. 1 is an original road and 16 is a rock-soil fracture surface, in order to reduce disturbance to a foundation 6 during construction and use and simultaneously reduce construction cost, the embodiment adopts an ecological restoration method for partial collapse of a semi-excavated semi-filled road, and the method comprises the following steps:
s01, adopting a transverse glass fiber reinforced plastic anchor rod 4 to temporarily support a collapsed surface 3 of an original road, fastening a foam light soil light retaining wall 5 with an original foundation through a vertical prestressed anchor rod 11 at the boundary position of the original road, and fixedly connecting the end part of the transverse glass fiber reinforced plastic anchor rod 4, which is exposed out of the collapsed surface 3, with the foam light soil light retaining wall 5;
s02, sequentially filling a supporting layer 8, an EPS light backfill layer 12 and a pervious concrete layer 13 between the foamed light soil light retaining wall 5 and the collapsed surface 3 from bottom to top in a layered mode.
The invention uses the light retaining wall 5 of light soil of foam, make the light retaining wall 5 of light soil of foam squeeze the foundation to reduce, thus can use the vertical prestressed anchorage bar 11 and not use the anti-slide pile, make this scheme basically not disturb the foundation 6, construct safe and reliable, in addition because do not need to make the anti-slide pile hole, the retaining wall material consumption is small, the fabrication cost is lower.
In order to enable the structural strength of the foam lightweight soil retaining wall 5 to meet the requirement, further, the foam lightweight soil retaining wall 5 comprises a foundation 6 and a wall body 7, the foundation 6 is poured by C30 reinforced concrete, the thickness is 30cm, and a reinforcing mesh with the thickness of 8@10cm is arranged at 1/2 position in the plate; the wall body 7 is poured in layers.
In order to increase the adhesion, the sealing performance and the leakage resistance of the foam lightweight soil retaining wall 5, furthermore, the material of the foam lightweight soil retaining wall 5 comprises concrete without coarse aggregate, a foaming agent is blended in the concrete, the volume weight of the foam lightweight soil is 8kN/m < 3 >, and the cubic compressive strength is not less than 1.5MPa. The foaming agent has good surface activity, can reduce the surface tension of liquid, and can play roles in adhesion, sealing and leakage prevention after foaming and curing.
In order to avoid the water accumulation between the wall body 7 and the foundation 6 to cause the foam lightweight soil retaining wall 5 to be extruded and collapsed, the durability of the foam lightweight soil retaining wall 5 is improved, and further, a drainage hole 10 with the diameter of 100mm is preset in the wall body 7, and the drainage hole 10 penetrates through the wall body 7 to the left and the right.
In order to facilitate construction, n steel-plastic geogrids 9 are arranged in the supporting layer 8 in a layered mode, n is a positive integer larger than or equal to 1, the distance between every two adjacent steel-plastic geogrids 9 is 80cm, filling materials are poured between the steel-plastic geogrids 9 in a layered mode along the wall body 7 and filled in the layered mode, the filling materials are medium-density-dense broken stone earth, then compaction is conducted, and the steel-plastic geogrids 9 are parallel to the horizontal plane.
In order to increase the bearing capacity of the repaired road, the ends of the steel-plastic geogrid 9 further extend into the foam lightweight soil retaining wall 5.
Further, the thickness of the EPS light backfill layer 12 is more than 50cm. The EPS light backfill layer 12 has the characteristics of light weight, high strength, strong chemical stability and water stability and good mechanical property, can reduce the dead weight of an upper road structure, relieve the pressure of the foam light soil light retaining wall 5 and better solve the excessive settlement and differential settlement of a newly-built roadbed.
Further, the pervious concrete layer 13 is connected with the undisrupted roadbed 2 through steel bars 14, and the longitudinal distance is 30cm, so that an integral pavement is formed. Through the steel bars, the newly repaired road surface and the un-collapsed roadbed 2 are connected more stably, and cracking between the newly repaired road surface and the un-collapsed roadbed 2 is avoided.
Further, the light retaining wall 5 made of the foamed light soil is in a step shape, the upper surface of the step of the light retaining wall 5 made of the foamed light soil is provided with a greening geocell 15, and planting soil is filled in the greening geocell 15. The greening geocell 15 can be used for planting plants, and has a greening effect.
The foregoing is a further detailed description of the invention in connection with specific preferred embodiments and it is not intended to limit the invention to the specific embodiments described. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (9)
1. An ecological restoration method for partial collapse of a half-excavated half-filled road, which is characterized by comprising the following steps:
s01, adopting a transverse glass fiber reinforced plastic anchor rod (4) to temporarily support a collapsed surface (3) of an original road, fastening a foam lightweight soil retaining wall (5) with an original foundation through a vertical pre-stressed anchor rod (11) at the boundary line position of the original road, and fixedly connecting the end part of the transverse glass fiber reinforced plastic anchor rod (4) exposed out of the collapsed surface (3) with the foam lightweight soil retaining wall (5);
s02, sequentially filling a supporting layer (8), an EPS light backfill layer (12) and a pervious concrete layer (13) between the foamed light soil light retaining wall (5) and the collapsed surface (3) layer by layer from bottom to top.
2. The ecological restoration method for the partial collapse of the semi-excavated semi-filled road according to claim 1, wherein the foamed lightweight earth retaining wall (5) comprises a foundation (6) and a wall body (7), the foundation (6) is cast by C30 reinforced concrete, the thickness is 30cm, and a reinforcing mesh with the thickness of 8@10cm x 10cm is arranged at 1/2 position in the plate; and the wall body (7) is poured in layers.
3. The ecological restoration method for partial collapse of semi-excavated semi-filled road according to claim 2, wherein the material of the foamed lightweight soil retaining wall (5) comprises concrete without coarse aggregate mixed with foaming agent, and the volume weight of the foamed lightweight soil is 8kN/m 3 The cubic compressive strength is not less than 1.5MPa.
4. The ecological restoration method for partial collapse of semi-excavated semi-filled road according to claim 2, wherein the wall body (7) is provided with a drainage hole (10) with a diameter of 100mm, and the drainage hole (10) penetrates the wall body (7) in the left and right directions.
5. The ecological restoration method for partial collapse of a semi-excavated semi-filled road according to claim 2, wherein n steel-plastic geogrids (9) are arranged in the supporting layer (8) in a layered mode, n is a positive integer greater than or equal to 1, the distance between two adjacent layers of the steel-plastic geogrids (9) is 80cm, filling materials are adopted between the steel-plastic geogrids (9) and poured along the wall body (7) in a layered mode to fill the steel-plastic geogrids in the layered mode, the filling materials are medium-density to dense crushed rock soil, and then compaction is conducted, and the steel-plastic geogrids (9) are parallel to the horizontal plane.
6. The ecological restoration method for partial collapse of semi-excavated semi-filled road according to claim 4, wherein the ends of the steel-plastic geogrid (9) extend into the interior of the foamed lightweight earth retaining wall (5).
7. The ecological restoration method for partial collapse of semi-excavated semi-filled road according to claim 1, wherein the EPS light backfill layer (12) has a thickness greater than 50cm.
8. The ecological restoration method for partial collapse of semi-excavated semi-filled road according to claim 1, wherein the pervious concrete layer (13) is connected with the un-collapsed roadbed (2) through steel bars (14) with a longitudinal spacing of 30cm to form an integral road surface.
9. The ecological restoration method for partial collapse of semi-excavated semi-filled road according to claim 4, wherein the foam lightweight soil retaining wall (5) is in a step shape, a green geocell (15) is arranged on the upper surface of the step of the foam lightweight soil retaining wall (5), and the green geocell (15) is filled with planting soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211217891.7A CN115897318A (en) | 2022-09-30 | 2022-09-30 | Ecological restoration method for partial collapse of semi-excavated and semi-filled road |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211217891.7A CN115897318A (en) | 2022-09-30 | 2022-09-30 | Ecological restoration method for partial collapse of semi-excavated and semi-filled road |
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| Publication Number | Publication Date |
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| CN115897318A true CN115897318A (en) | 2023-04-04 |
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| CN202211217891.7A Pending CN115897318A (en) | 2022-09-30 | 2022-09-30 | Ecological restoration method for partial collapse of semi-excavated and semi-filled road |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070073434A (en) * | 2006-01-05 | 2007-07-10 | 박성언 | Environment green wall |
| CN106836275A (en) * | 2017-04-13 | 2017-06-13 | 中国地质科学院探矿工艺研究所 | Landscape eco-friendly retaining wall for rapidly protecting tillite slope and implementation method |
| KR20180022214A (en) * | 2016-08-23 | 2018-03-06 | 삼부토건주식회사 | Method for constructing road structure using light weight cellular concrete and drain belt |
| CN108086352A (en) * | 2018-02-01 | 2018-05-29 | 云南新创新交通建设股份有限公司 | A kind of highway hard rock Steep Slope Embankment anchor rod foundation Anti-slide Pile Retaining Structure |
| CN111304988A (en) * | 2019-12-20 | 2020-06-19 | 贵州智华建设工程有限责任公司 | Light embankment structure built on high and steep hillside and construction method |
| CN111441206A (en) * | 2020-03-04 | 2020-07-24 | 山东大学 | Composite reinforced lightweight soil retaining wall roadbed integrated structure and construction method |
| CN113818300A (en) * | 2021-09-24 | 2021-12-21 | 中煤科工重庆设计研究院(集团)有限公司 | Sponge urban ecological roadbed structure based on original road and construction method thereof |
| CN114575208A (en) * | 2022-03-28 | 2022-06-03 | 中铁二院贵阳勘察设计研究院有限责任公司 | Abrupt slope roadbed structure convenient to prefabricated installation |
-
2022
- 2022-09-30 CN CN202211217891.7A patent/CN115897318A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070073434A (en) * | 2006-01-05 | 2007-07-10 | 박성언 | Environment green wall |
| KR20180022214A (en) * | 2016-08-23 | 2018-03-06 | 삼부토건주식회사 | Method for constructing road structure using light weight cellular concrete and drain belt |
| CN106836275A (en) * | 2017-04-13 | 2017-06-13 | 中国地质科学院探矿工艺研究所 | Landscape eco-friendly retaining wall for rapidly protecting tillite slope and implementation method |
| CN108086352A (en) * | 2018-02-01 | 2018-05-29 | 云南新创新交通建设股份有限公司 | A kind of highway hard rock Steep Slope Embankment anchor rod foundation Anti-slide Pile Retaining Structure |
| CN111304988A (en) * | 2019-12-20 | 2020-06-19 | 贵州智华建设工程有限责任公司 | Light embankment structure built on high and steep hillside and construction method |
| CN111441206A (en) * | 2020-03-04 | 2020-07-24 | 山东大学 | Composite reinforced lightweight soil retaining wall roadbed integrated structure and construction method |
| CN113818300A (en) * | 2021-09-24 | 2021-12-21 | 中煤科工重庆设计研究院(集团)有限公司 | Sponge urban ecological roadbed structure based on original road and construction method thereof |
| CN114575208A (en) * | 2022-03-28 | 2022-06-03 | 中铁二院贵阳勘察设计研究院有限责任公司 | Abrupt slope roadbed structure convenient to prefabricated installation |
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