CN211228591U - Steel fiber concrete gravity type retaining wall protective structure - Google Patents
Steel fiber concrete gravity type retaining wall protective structure Download PDFInfo
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- CN211228591U CN211228591U CN201921564846.2U CN201921564846U CN211228591U CN 211228591 U CN211228591 U CN 211228591U CN 201921564846 U CN201921564846 U CN 201921564846U CN 211228591 U CN211228591 U CN 211228591U
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Abstract
The utility model discloses a steel fiber concrete gravity type retaining wall protective structure, including steel fiber concrete basis, steel fiber concrete wall, the grit inverted filter, tamped clay water barrier, the sluicing pore, mortar bed course, the escape canal, wall back backfill and geotechnological cloth, steel fiber concrete basis and steel fiber concrete wall monolithic are pour on mortar bed course, the grit inverted filter is filled between steel fiber concrete wall and wall back backfill, tamped clay water barrier sets up in the grit inverted filter bottom and top, the sluicing pore runs through steel fiber concrete wall, the escape canal is built in steel fiber concrete basis avris with steel fiber concrete, the wall back backfill tamps the time-division ramming. The steel fibers can resist the generation and the expansion of cracks and improve the structural safety; the excellent mechanical property of the steel fiber concrete can be utilized to reduce the cross-sectional area of the structure, thereby saving materials and reducing the engineering quantity; also has the advantages of good integrity, strong impermeability and long service life.
Description
Technical Field
The utility model relates to a gravity type retaining wall especially relates to a steel fibre concrete gravity type retaining wall protective structure.
Background
At present, in the fields of highways, railways, water conservancy and the like, the gravity retaining wall is widely adopted because the gravity retaining wall is simple in design, does not need reinforcement or only needs a small amount of reinforcement locally, and is convenient to construct, and most of the gravity retaining walls in China are constructed by adopting grouted block stones or concrete materials.
In order to obtain higher bearing capacity, the cross section of the wall body is required to be increased frequently by the grouted block stone gravity retaining wall, so that the construction amount is larger, the requirement on the bearing capacity of a foundation is high, the foundation burial depth is large, and the corresponding earthwork excavation engineering amount is also larger. The concrete gravity retaining wall body also has a larger cross-sectional area, the pouring work amount is larger, more materials are needed, the concrete structure is easy to generate tensile microcracks under the action of temperature difference, and in addition, the microcracks can be expanded into macroscopic cracks under the action of external load, so that the safety, the applicability and the durability of the protective structure are influenced. In order to maintain the protection effect, the common gravity retaining wall structure is usually required to be maintained and repaired in the using process, so that the normal use of the structure is influenced, and the operating cost is increased.
Compared with the existing gravity type retaining wall protection structure, the protection structure is formed by pouring steel fiber concrete, the steel fiber can bear force together with the concrete, the generation and the expansion of cracks can be effectively resisted, the ductility of the protection structure is increased, and the safety, the applicability and the durability of the protection structure are obviously improved; meanwhile, the steel fiber concrete can effectively improve the cracking load and the ultimate load of the protective structure, so that the cross-sectional area of the protective structure can be reduced, the material is saved, and the engineering quantity is reduced; the protective structure has the advantages of good integrity, strong impermeability and long service life, and greatly reduces the maintenance and renovation cost.
Disclosure of Invention
An object of the utility model is to provide a steel fiber concrete gravity type retaining wall protective structure that performance is superior, the engineering volume is less and the durability is good, and the purpose is effectively to resist fissured production and extension, improves protective structure's fracture load and ultimate load, is showing security, suitability and the durability that promotes protective structure.
In order to achieve the above purpose, the technical solution of the present invention is as follows:
the utility model provides a steel fiber concrete gravity type retaining wall protective structure, includes steel fiber concrete basis, steel fiber concrete wall body, grit inverted filter, tamped clay water barrier, sluicing pore, mortar bed course, escape canal, wall back backfill and geotechnological cloth, steel fiber concrete basis and steel fiber concrete wall body monolithic are in on the mortar bed course, the grit inverted filter is filled between steel fiber concrete wall body and wall back backfill, tamped clay water barrier set up in grit inverted filter bottom and top, the sluicing pore runs through steel fiber concrete wall body, the escape canal with steel fiber concrete build in steel fiber concrete basis avris, the wall back backfill is tamped the time slice.
Further, the steel fiber concrete is formed by mixing a proper amount of steel fibers in the concrete, wherein the length of the steel fibers is 10-13 mm, and the diameter of the steel fibers is 0.4-0.6 mm.
Further, the mortar mattress layer is laid to be 15-20 cm thick.
Further, one side of the steel fiber concrete foundation, which is close to the soil body, is upright, and the front slope is 1: 0.2, and the casting height is 30-40 cm.
Further, the wall back of steel fiber concrete wall body is upright, and the wall slope is 1: 0.2, and the suitable casting height is 4-6 m.
Furthermore, the sand reverse filter layer is filled between the steel fiber concrete wall body and the back backfill soil of the wall from bottom to top, the filling thickness is 40 cm, and the particle size of sand is 2-5 cm.
Furthermore, the rammed clay water-resisting layer is formed by ramming clay, is arranged at the bottom and the top of the sandstone reversed filter layer and has the thickness of 30 cm.
Furthermore, the water drainage pore passage penetrates through the steel fiber concrete wall body and is arranged in a quincunx shape, the water drainage pore passage is inclined outwards by 4%, a PVC pipe with the diameter of 40-60 mm is placed in the pore passage, and the tail part of one side, close to the backfill, of the PVC pipe is wrapped by geotextile (9).
The technical effects of the utility model reside in that:
(1) the protective structure is formed by pouring steel fiber concrete, the steel fiber and the concrete can bear force together, the generation and the expansion of cracks can be effectively resisted, the ductility of the protective structure is increased, and the safety, the applicability and the durability of the protective structure are obviously improved;
(2) the steel fiber concrete can improve the cracking load and the ultimate load of the protective structure, thereby reducing the cross-sectional area of the protective structure, saving materials and reducing the engineering quantity;
(3) the protective structure has the advantages of good integrity, strong impermeability and long service life, and reduces the cost of later maintenance and renovation.
Drawings
Fig. 1 is the utility model discloses a steel fiber concrete gravity type retaining wall protective structure's side schematic diagram.
Figure 2 is the utility model discloses steel fiber concrete gravity type retaining wall protective structure's schematic structure.
Reference numerals:
1 is a steel fiber concrete foundation; 2 is a steel fiber concrete wall body; 3 is a sandstone inverted filter layer; 4 is a rammed clay water-resisting layer; 5 is a water drainage pore passage; 6 is a mortar mattress layer; 7 is a drainage ditch; 8 is wall back backfill; and 9 is geotextile.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
referring to fig. 1 and 2, the utility model provides a steel fiber concrete gravity retaining wall protection structure, which comprises a steel fiber concrete foundation 1, a steel fiber concrete wall body 2, a sandstone inverted filter layer 3, a rammed clay water-proof layer 4, a water drainage channel 5, a mortar mattress layer 6, a drainage ditch 7, wall back backfill 8 and geotextile 9, the steel fiber concrete foundation 1 and the steel fiber concrete wall body 2 are integrally cast on the mortar mattress layer 6, the sand and stone reverse filtering layer 3 is filled between the steel fiber concrete wall body 2 and the back backfill soil 8 of the wall, the rammed clay water-resisting layer 4 is arranged at the bottom and the top of the sand and stone reverse filtering layer 3, the water drainage pore passage 5 penetrates through the steel fiber concrete wall body 2, the drainage ditch 7 is constructed on the side of the steel fiber concrete foundation 1 by using steel fiber concrete, and the wall back backfill 8 is tamped layer by layer when backfilled.
In order to prevent the generation and the propagation of the structural crack and reduce the structural deformation, the steel fiber concrete is formed by mixing a proper amount of steel fibers in the concrete, wherein the length of the steel fibers is 13 mm, and the diameter of the steel fibers is 0.4 mm.
In order to avoid uneven settlement of the foundation, the mortar cushion layer 6 is laid to a thickness of 18 cm.
In order to enable the structure to meet the requirements of safety and economy, one side, close to the soil body, of the steel fiber concrete foundation 1 is upright, and the front slope is 1: 0.2, and the casting height is 35 cm. The wall back of steel fiber concrete wall body 2 is upright, and the wall slope is 1: 0.2, and the suitable casting height is 5 meters.
In order to filter the water to be drained, the sand reverse filtering layer 3 is filled between the steel fiber concrete wall body 2 and the back backfill soil 8 from bottom to top, the filling thickness is 40 cm, and the sand grain size is 3 cm. Therefore, the discharged water can be effectively filtered without blocking the pipeline.
In order to prevent water and water, the rammed clay water-resisting layer 4 is formed by ramming clay and is arranged at the bottom and the top of the sandstone inverted filtration layer 3, and the thickness is 30 cm.
In order to timely drain water, the water drainage pore passage 5 penetrates through the steel fiber concrete wall body 2 and is arranged in a quincunx shape, the water drainage pore passage is inclined outwards by 4%, a PVC pipe with the diameter of 60 millimeters is placed in the pore passage, the tail part of one side, close to the backfill soil, of the PVC pipe is wrapped by geotextile (9), and the drained water can be filtered again, so that the pipeline is not blocked.
The utility model provides a steel fibre concrete gravity type retaining wall protective structure, when actual construction, can follow following step execution:
(1) paying off for measurement, and removing soft soil stones on the substrate;
(2) laying a mortar cushion layer 6 with the thickness of 18 cm and tamping and leveling;
(3) the steel fiber concrete foundation 1 and the steel fiber concrete wall body 2 are integrally poured on the mortar cushion layer 6;
(4) a sand and stone reverse filtering layer 3 is filled between the steel fiber concrete wall body 2 and the wall back backfill 8;
(5) a rammed clay water-resisting layer 4 is respectively arranged at the bottom and the top of the sandstone inverted filter layer 3;
(6) a water drainage pore passage 5 penetrates through the steel fiber concrete wall body 2 and is arranged in a quincunx shape, the water drainage pore passage is inclined outwards by 4 percent, a PVC pipe with the diameter of 60 millimeters is placed in the pore passage, and the tail part of one side, close to the filling soil, of the PVC pipe is wrapped by geotextile 9;
(7) when the wall back backfill 8 is backfilled, the layers are tamped;
(8) and constructing a drainage ditch 7.
Claims (8)
1. The utility model provides a steel fibre concrete gravity type retaining wall protective structure which characterized in that: the concrete wall comprises a steel fiber concrete foundation (1), a steel fiber concrete wall body (2), a sandstone inverted filter layer (3), a rammed clay water-resisting layer (4), a water drainage channel (5), a mortar mattress layer (6), a drainage ditch (7), wall back backfill (8) and geotextile (9); the steel fiber concrete foundation (1) and the steel fiber concrete wall body (2) are integrally cast on the mortar mattress layer (6); the sand reverse filtering layer (3) is filled between the steel fiber concrete wall body (2) and the wall back backfill (8); the rammed clay water-resisting layers (4) are arranged at the bottom and the top of the sandstone inverted filter layer (3); the water drainage pore passage (5) penetrates through the steel fiber concrete wall body (2); the drainage ditch (7) is constructed on the side of the steel fiber concrete foundation (1) by using steel fiber concrete; and when the wall back backfill soil (8) is backfilled, the layers are tamped.
2. A steel fibre concrete gravity retaining wall protective structure according to claim 1, wherein: the steel fiber concrete is formed by mixing a proper amount of steel fibers in concrete, wherein the length of the steel fibers is 10-13 mm, and the diameter of the steel fibers is 0.4-0.6 mm.
3. A steel fibre concrete gravity retaining wall protective structure according to claim 1, wherein: the thickness of the mortar mattress layer (6) is 15-20 cm.
4. A steel fibre concrete gravity retaining wall protective structure according to claim 1, wherein: one side of the steel fiber concrete foundation (1) close to the soil body is upright, and the front slope is 1: 0.2, and the casting height is 30-40 cm.
5. A steel fibre concrete gravity retaining wall protective structure according to claim 1, wherein: the wall back of steel fiber concrete wall body (2) is upright, and the wall slope is 1: 0.2, and the suitable casting height is 4-6 m.
6. A steel fibre concrete gravity retaining wall protective structure according to claim 1, wherein: the sand and stone reverse filtering layer (3) is filled between the steel fiber concrete wall body (2) and the wall back backfill (8) from bottom to top, the filling thickness is 40 cm, and the sand and stone particle size is 2-5 cm.
7. A steel fibre concrete gravity retaining wall protective structure according to claim 1, wherein: the rammed clay water-resisting layer (4) is formed by ramming clay, is arranged at the bottom and the top of the sandstone inverted filtration layer (3), and has the thickness of 30 cm.
8. A steel fibre concrete gravity retaining wall protective structure according to claim 1, wherein: the water drainage pore passage (5) penetrates through the steel fiber concrete wall body (2) and is arranged in a quincunx shape, the water drainage pore passage is inclined outwards by 4%, a PVC pipe with the diameter of 40-60 mm is placed in the pore passage, and the tail part of one side, close to the backfill soil, of the PVC pipe is wrapped by geotextile (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921564846.2U CN211228591U (en) | 2019-09-20 | 2019-09-20 | Steel fiber concrete gravity type retaining wall protective structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921564846.2U CN211228591U (en) | 2019-09-20 | 2019-09-20 | Steel fiber concrete gravity type retaining wall protective structure |
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| CN211228591U true CN211228591U (en) | 2020-08-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112900485A (en) * | 2021-01-25 | 2021-06-04 | 广东粤路勘察设计有限公司 | Improved cantilever type retaining wall structure |
| CN113373948A (en) * | 2021-05-18 | 2021-09-10 | 上海工程技术大学 | Protective structure for repairing unstable expansive soil slope and construction method thereof |
| CN114197519A (en) * | 2021-12-29 | 2022-03-18 | 吉林铁道勘察设计院有限公司 | Assembled reverse filtering structure of railway retaining wall and construction method thereof |
-
2019
- 2019-09-20 CN CN201921564846.2U patent/CN211228591U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112900485A (en) * | 2021-01-25 | 2021-06-04 | 广东粤路勘察设计有限公司 | Improved cantilever type retaining wall structure |
| CN112900485B (en) * | 2021-01-25 | 2022-02-18 | 广东粤路勘察设计有限公司 | Improved cantilever type retaining wall structure |
| CN113373948A (en) * | 2021-05-18 | 2021-09-10 | 上海工程技术大学 | Protective structure for repairing unstable expansive soil slope and construction method thereof |
| CN114197519A (en) * | 2021-12-29 | 2022-03-18 | 吉林铁道勘察设计院有限公司 | Assembled reverse filtering structure of railway retaining wall and construction method thereof |
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