CN108660866B - Anti-slip deformation roadbed reinforcing structure of high-speed railway in rock mass landslide area - Google Patents
Anti-slip deformation roadbed reinforcing structure of high-speed railway in rock mass landslide area Download PDFInfo
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- CN108660866B CN108660866B CN201810591512.8A CN201810591512A CN108660866B CN 108660866 B CN108660866 B CN 108660866B CN 201810591512 A CN201810591512 A CN 201810591512A CN 108660866 B CN108660866 B CN 108660866B
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- roadbed
- sliding layer
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- rock mass
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- 239000011435 rock Substances 0.000 title claims abstract description 35
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 23
- 239000012791 sliding layer Substances 0.000 claims abstract description 34
- 230000002787 reinforcement Effects 0.000 claims description 19
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Road Paving Structures (AREA)
Abstract
A high-speed railway anti-slip deformation roadbed reinforcing structure in a rock pile landslide area is provided, so that the roadbed structure is not influenced by the deformation, particularly the downward sliding deformation, of the rock pile landslide area. Comprising the following steps: the reinforcing body is arranged in a rock pile landslide body below the roadbed structure, and the supporting base is arranged at the top of the reinforcing body; the sliding layer is arranged on the top surface of the supporting base, the roadbed foundation is arranged on the top surface of the sliding layer, and the roadbed structure is filled on the roadbed foundation; the resistance piles are arranged in a rock pile landslide body on the uphill side of the roadbed structure at intervals along the extending direction of the line, and the lower parts of the resistance piles penetrate through the sliding surface to be anchored in a stable stratum; and the two ends of the tension cable are fixedly connected with the resistance pile and the roadbed foundation respectively.
Description
Technical Field
The invention relates to geotechnical engineering, in particular to roadbed reinforcement structure engineering for landslide downward deformation of a rock pile.
Background
The landslide of the rock mass is distributed in a large quantity in the mountain area of China, and the landslide of the rock mass has poor stability or can generate compaction and sedimentation deformation or horizontal deformation to the lower side of the slope body under the influence of external rainfall, vibration and the like. How to construct roadbed engineering in a landslide area of a rock pile under the condition and ensure that the construction engineering is not influenced by deformation, in particular to sliding deformation, is a problem which needs to be solved urgently. The traditional method adopts strong anti-slide piles and foundation reinforcement measures to treat, so that the engineering investment is huge, and the high-speed railway roadbed reinforcement measures based on the flexible reinforcement concept, which can allow proper deformation, have very important significance, and have the characteristics of economy, convenience in construction, safety, environmental protection and the like.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the anti-slip deformation roadbed reinforcing structure for the high-speed railway in the landslide area of the rock mass, so that the roadbed structure is not influenced by the deformation, particularly the downward sliding deformation, of the landslide area of the rock mass.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention relates to a high-speed railway anti-slip deformation roadbed reinforcing structure for a rock mass landslide area, which is characterized by comprising the following steps: the reinforcing body is arranged in a rock pile landslide body below the roadbed structure, and the supporting base is arranged at the top of the reinforcing body; the sliding layer is arranged on the top surface of the supporting base, the roadbed foundation is arranged on the top surface of the sliding layer, and the roadbed structure is filled on the roadbed foundation; the resistance piles are arranged in a rock pile landslide body on the uphill side of the roadbed structure at intervals along the extending direction of the line, and the lower parts of the resistance piles penetrate through the sliding surface to be anchored in a stable stratum; the two ends of the tension cable are fixedly connected with the resistance pile and the roadbed foundation respectively;
the sliding layer consists of a lower sliding layer and an upper sliding layer which are fixedly bonded with the supporting base and the roadbed foundation respectively, and the lower sliding layer and the upper sliding layer with smooth surfaces are made of high-strength low-friction-resistance composite geotechnical materials;
the reinforcing body is grouting reinforcing body or cement fly ash gravel pile reinforcing body.
The invention has the beneficial effects of effectively solving the problem that the roadbed structure of the landslide area of the rock pile is not influenced by the deformation, particularly the sliding deformation, along with simple structure construction, good economy, popularization and application prospect and meeting the requirement of environmental protection.
Drawings
The specification includes the following three drawings:
fig. 1 is a schematic cross-sectional view of an embodiment 1 of a high-speed railway anti-slip deformation roadbed reinforcement structure in a landslide area of a rock mass.
Fig. 2 is a schematic cross-sectional view of an embodiment 2 of a high-speed railway anti-slip deformation roadbed reinforcement structure in a landslide area of a rock mass.
Fig. 3 is a large view of the M node in fig. 1.
The component names and corresponding labels are shown: the pile comprises a reinforcing body 1, a supporting base 2, a sliding layer 3, a lower sliding layer 31, an upper sliding layer 32, a roadbed foundation 4, a roadbed structure 5, a resistance pile 6, a tension cable 7, a rock mass sliding body A, a stable stratum B and a sliding surface C.
Description of the embodiments
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
referring to fig. 1 and 2, a high-speed railway anti-slip deformation roadbed reinforcing structure for a landslide area of a rock mass includes: the system comprises a reinforcing body 1 and a supporting base 2, wherein the reinforcing body 1 is arranged in a rock pile landslide body A below a roadbed structure 5, and the supporting base 2 is fixedly arranged at the top of the reinforcing body 1; the sliding layer 3 and the roadbed foundation 4, the sliding layer 3 is arranged on the top surface of the supporting base 2, the roadbed foundation 4 is arranged on the top surface of the sliding layer 3, and the roadbed structure 5 is filled on the roadbed foundation 4; the resistance piles 6 are arranged in the rock pile landslide body A on the uphill side of the roadbed structure 5 at intervals along the extending direction of the line, and the lower parts of the resistance piles penetrate through the sliding surface C to be anchored in the stable stratum B; and the two ends of the tension cable 7 are fixedly connected with the resistance pile 6 and the roadbed foundation 4 respectively.
Referring to fig. 1 and 3, the sliding layer 3 is composed of a lower sliding layer 31 and an upper sliding layer 32 which are fixedly bonded with the supporting base 2 and the roadbed foundation 4 respectively, and the lower sliding layer 31 and the upper sliding layer 32 with smooth surfaces are made of high-strength low-friction composite geotechnical materials.
Referring to fig. 1, 2 and 3, a reinforcing body 1 is arranged in a rock mass landslide body A below a roadbed structure 5, so that the problems of insufficient vertical bearing capacity and vertical settlement of the rock mass landslide body are solved. The supporting base 2 is used for solving the problem of uneven deformation of the reinforcing body 1 and is used as a fixed foundation of the lower sliding layer 31; the roadbed foundation 4 is utilized as a fixed foundation for the upper sliding layer 32, and the influence of the upper roadbed structure 5 on the sliding effect of the sliding layer 3 due to direct contact with the sliding layer 3 is avoided. By utilizing the small friction smoothing effect between the lower sliding layer 31 and the upper sliding layer 32 which are respectively stuck and fixed on the supporting base 2 and the roadbed foundation 5, when the landslide of the rock mass is deformed in a sliding way, the supporting base 2 and the roadbed foundation 4 can generate relative sliding deformation easily. The resistance pile 6 is fixedly connected with the roadbed foundation 4 through the tension cable 7, and when the rock pile slides down and deforms, the resistance pile 6 can provide upward tension for the roadbed foundation 4, so that the roadbed structure 5 on the upper part of the roadbed foundation 4 is ensured not to deform along the sliding direction. The structure can allow the landslide body to have proper deformation, but can not influence the high-speed railway roadbed structure on the upper part, has simple structure construction and good economy, has popularization and application prospects, and meets the requirement of environmental protection.
Referring to fig. 1, for a pile or a pile landslide mass with a large number of stones, grouting reinforcement is preferably used for reinforcement 1. Referring to fig. 2, cement fly ash gravel piles (CFG piles) reinforcement are preferably used for the soil landslide mass. The reinforcement depth is calculated and determined according to the requirements of the roadbed structure 5 on settlement and bearing capacity.
Referring to fig. 1 and 2, the supporting base 2 and the roadbed foundation 4 are poured by reinforced concrete, and the thickness of the supporting base is not less than 0.3m. The resistance piles 6 are reinforced concrete piles, and the setting positions and the heights of the resistance piles and the heights Cheng Yizhi of the roadbed foundation 4 are equal. The tension cable 7 is made of high-strength steel strands, and two ends of the tension cable are fixedly connected with the resistance piles 6 and the roadbed foundation 4 in a tensioning manner. The setting width L of the reinforcement body 1 and the support base 2 on the upper side of the rock mass landslide body A is larger than the width of the roadbed foundation 4, and the setting width L is larger than 1.0m.
The foregoing is intended to illustrate only some of the principles of the present invention, namely, a ballast-area high-speed railway anti-slip deformation roadbed reinforcement structure, and is not intended to limit the invention to the specific structure shown and described, but rather, all possible modifications and equivalents thereof, which may be employed, are intended to be within the scope of the invention as claimed.
Claims (5)
1. The utility model provides a rock mass landslide area anti-skidding warp roadbed reinforced structure which characterized by includes: the device comprises a reinforcement body (1) and a support base (2), wherein the reinforcement body (1) is arranged in a rock pile landslide body (A) below a roadbed structure (5), and the support base (2) is fixedly arranged at the top of the reinforcement body (1); the device comprises a sliding layer (3) and a roadbed foundation (4), wherein the sliding layer (3) is arranged on the top surface of a supporting base (2), the roadbed foundation (4) is arranged on the top surface of the sliding layer (3), and a roadbed structure (5) is filled on the roadbed foundation (4); the resistance piles (6) are arranged in a rock pile landslide body (A) on the uphill side of the roadbed structure (5) at intervals along the extending direction of the line, and the lower parts of the resistance piles penetrate through the sliding surface (C) to be anchored in the stable stratum (B); the two ends of the tension cable (7) are fixedly connected with the resistance pile (6) and the roadbed foundation (4) respectively;
the sliding layer (3) consists of a lower sliding layer (31) and an upper sliding layer (32) which are fixedly bonded with the supporting base (2) and the roadbed foundation (4) respectively, and the lower sliding layer (31) and the upper sliding layer (32) with smooth surfaces are made of high-strength composite geotechnical materials;
the reinforcement body (1) is a grouting reinforcement body or a cement fly ash gravel pile reinforcement body.
2. The anti-slip deformed roadbed reinforcing structure for a landslide area of a rock mass as set forth in claim 1, wherein: the supporting base (2) and the roadbed foundation (4) are poured by reinforced concrete, and the thickness of the supporting base is not smaller than 0.3m.
3. The anti-slip deformed roadbed reinforcing structure for a landslide area of a rock mass as set forth in claim 1, wherein: the resistance piles (6) are reinforced concrete piles, and the arrangement positions and the heights of the resistance piles are consistent with those of the roadbed foundation (4).
4. The anti-slip deformed roadbed reinforcing structure for a landslide area of a rock mass as set forth in claim 1, wherein: the tension cable (7) is made of high-strength steel strands, and two ends of the tension cable are fixedly connected with the resistance piles (6) and the roadbed foundation (4) in a tensioning manner.
5. The anti-slip deformed roadbed reinforcing structure for a landslide area of a rock mass as set forth in claim 1, wherein: the width (L) of the reinforcement body (1) and the support base (2) arranged on the upper side of the rock mass landslide body (A) is larger than the width of the roadbed foundation (4), and the width (L) is larger than 1.0m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810591512.8A CN108660866B (en) | 2018-06-10 | 2018-06-10 | Anti-slip deformation roadbed reinforcing structure of high-speed railway in rock mass landslide area |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810591512.8A CN108660866B (en) | 2018-06-10 | 2018-06-10 | Anti-slip deformation roadbed reinforcing structure of high-speed railway in rock mass landslide area |
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| Publication Number | Publication Date |
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| CN108660866A CN108660866A (en) | 2018-10-16 |
| CN108660866B true CN108660866B (en) | 2024-01-05 |
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| CN201810591512.8A Active CN108660866B (en) | 2018-06-10 | 2018-06-10 | Anti-slip deformation roadbed reinforcing structure of high-speed railway in rock mass landslide area |
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| CN111576117B (en) * | 2020-05-13 | 2022-03-01 | 中铁二院工程集团有限责任公司 | Roadbed structure crossing active fault and construction method thereof |
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| CN108660866A (en) | 2018-10-16 |
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