CN110878561A - Step-type continuous variable cantilever retaining wall structure - Google Patents
Step-type continuous variable cantilever retaining wall structure Download PDFInfo
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- CN110878561A CN110878561A CN201911056948.8A CN201911056948A CN110878561A CN 110878561 A CN110878561 A CN 110878561A CN 201911056948 A CN201911056948 A CN 201911056948A CN 110878561 A CN110878561 A CN 110878561A
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- 239000011150 reinforced concrete Substances 0.000 claims abstract description 71
- 239000004567 concrete Substances 0.000 claims abstract description 17
- 239000002689 soil Substances 0.000 claims description 26
- 238000009933 burial Methods 0.000 claims description 9
- 239000004575 stone Substances 0.000 description 7
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000004746 geotextile Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Soil Sciences (AREA)
- Retaining Walls (AREA)
Abstract
The invention discloses a stepped continuously variable cantilever retaining wall structure, wherein each stepped retaining wall unit comprises a reinforced concrete wall body and a reinforced concrete structural plate, the reinforced concrete wall body is fixedly connected with the reinforced concrete structural plate, the stepped continuously variable cantilever retaining wall structure comprises a plurality of stepped retaining wall units with different heights, the reinforced concrete structural plates of the stepped retaining wall units are connected into a whole, and the concrete wall bodies of two adjacent stepped retaining wall units and the concrete structural plates form a groove type semi-closed space. This structure successfully connects into a continuum structure with cascaded structure through concrete structure board, the effectual wholeness and the stability that improves cascaded barricade to solved that traditional disconnect-type barricade structure is big, the cost is high, inhomogeneous settlement leads to technical problem such as crack, thereby obtains a cascaded continuous variable cantilever barricade structure that mechanical strength is big, stability is strong, adaptability is high.
Description
Technical Field
The invention relates to the field of civil engineering, in particular to a step-type continuous variable cantilever retaining wall structure.
Background
The stepped retaining wall can be provided with fall effects with different height differences according to the overall landscape requirements, and has wide application market in the field of civil engineering. In the past, stepped retaining walls are built by respectively arranging corresponding retaining wall structures according to elevations, and because the retaining walls are all of separated structures, the problems of large size, difficult construction, high manufacturing cost and the like exist in each retaining wall individual, and meanwhile, in regions with relatively poor geology, the difference exists in settlement among the retaining wall structures at different positions, the structure dislocation and a series of problems are easily caused, and the later-period maintenance cost is increased. The continuously variable cantilever retaining wall structure avoids the separation of different elevation structures, and increases the structural integrity, thereby improving the safety, applicability and stability of the structure.
Disclosure of Invention
The invention aims to provide a stepped continuously variable cantilever retaining wall structure, which is characterized in that stepped structures are connected into a continuous body structure through concrete structural plates, so that the integrity and the stability of the stepped retaining wall are effectively improved, the technical problems of large structure, high manufacturing cost, cracks caused by uneven settlement and the like of the traditional separated retaining wall structure are solved, and the stepped continuously variable cantilever retaining wall structure with high mechanical strength, high stability and high adaptability is obtained.
In order to achieve the technical purpose, the technical scheme of the invention is as follows: the utility model provides a continuous variable cantilever retaining wall structure of notch cuttype, includes ladder retaining wall unit, ladder retaining wall unit includes: the reinforced concrete wall body bears the lateral soil retaining function and is connected with the reinforced concrete structural slab through fixed connection, the reinforced concrete structural slab bears the vertical pressure, the drain pipe is embedded in the reinforced concrete structural slab, and a plurality of layers of cushion layers are arranged below the reinforced concrete structural slab; the ladder-type continuous variable cantilever retaining wall structure is characterized by comprising a plurality of ladder retaining wall units with different heights, wherein reinforced concrete structural plates of the ladder retaining wall units are connected into a whole, a groove-type semi-closed space formed by concrete walls of two adjacent ladder retaining wall units and concrete structural plates is formed, and landscape units are formed in the groove-type semi-closed space.
Further, the height difference of the reinforced concrete walls of the stepped retaining wall unit and the previous stepped retaining wall unit is more than 1.0m (the height is the forward direction), and the thickness of the reinforced concrete wall body is 280-320 mm; the height difference between the ladder retaining wall unit and the reinforced concrete wall of the previous ladder retaining wall unit is less than or equal to 1.0m, and the thickness of the reinforced concrete wall body is 180-220 mm.
When the thickness of the reinforced concrete wall body of the stepped retaining wall unit is 280-320 mm, the embedding depth of the earth in front of the wall is up to 800 mm; when the thickness of the reinforced concrete wall body of the stepped retaining wall unit is 180-220 mm, the depth of the earth covering buried in front of the wall is 500 mm.
The calculation formula of the height of the reinforced concrete wall body is as follows:
Li＝Hi-Hi+1+di
wherein L isiThe height H of the reinforced concrete wall body of the No. i step retaining wall unitiLevel of reinforced concrete wall body representing No. i stepped retaining wall unit, Hi+1The elevation of the reinforced concrete wall body of the previous step unit is the forward direction from high to low, and di represents the depth of the buried soil in the front of the step retaining wall unit wall.
The reinforced concrete structure board elevation of each ladder barricade unit be reinforced concrete wall body top elevation and the difference of reinforced concrete wall body height, the computational formula is as follows:
wherein,
represents the i-th step retaining wall unit reinforced concrete structural slab elevation, LiThe height H of the reinforced concrete wall body of the No. i step retaining wall unitiAnd the elevation of the reinforced concrete wall body of the i-th step retaining wall unit is represented.
The thickness of the reinforced concrete structure plate is 280-320 mm.
The reinforced concrete structure plates of the initial unit and the reinforced concrete structure plates of the terminal units in the plurality of stepped retaining wall units form a front toe and a rear heel of the stepped continuous variable cantilever retaining wall structure, the length of the front toe is determined according to the burial depth of the front wall soil, when the burial depth of the front wall soil is 800mm, the structure plates are 3m long, and when the burial depth of the front wall soil is 500mm, the structure plates are 2m long; the length of the heel is determined according to the rear soil covering height of the terminal unit wall, when the rear soil covering height of the wall is more than or equal to 2 and less than 4, the length of the structural plate is 3m, and when the rear soil covering height of the wall is more than 0 and less than 2m, the length of the structural plate is 2 m.
The reinforced concrete structure board below from top to bottom set gradually 100mm thick C15 plain concrete layer, 150mm thick rubble bed course and backfill rubble layer, the laying of bed course has not only improved the bearing capacity of the foundation shallow layer below the ground, can also suitably reduce and subside, the drainage consolidation of ground with higher speed.
The reinforced concrete structural slab is pre-embedded
The drain pipes are arranged at intervals of 1500mm, and the end parts of the drain pipes are provided with bagged broken stone reverse filter layers wrapped by geotextile, so that the landscape unit soil body is prevented from losing.
This structure successfully connects into a continuum structure with cascaded structure through concrete structure board, the effectual wholeness and the stability that improves cascaded barricade to solved that traditional disconnect-type barricade structure is big, the cost is high, inhomogeneous settlement leads to technical problem such as crack, thereby obtains a cascaded continuous variable cantilever barricade structure that mechanical strength is big, stability is strong, adaptability is high. Compared with the prior art, the invention has the following advantages:
(1) the corresponding number of the stepped retaining wall units can be set according to the actual engineering situation, and the landscape units can also be designed according to the real-time landscape requirement, so that the method can be applied to various project types.
(2) According to the difference of the height of the soil covering in front of the wall, the reinforced concrete wall body with different thicknesses is designed, the structural design of the wall body thickness is optimized, and the reduction of the engineering investment and the construction cost are facilitated.
(3) The multiple stepped retaining wall units are connected with one another and divided into a whole, so that the structural integrity and stability are greatly improved, and the problems of cracking and the like caused by poor settlement of the separated retaining wall are solved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
the figure includes: the concrete wall comprises a reinforced concrete wall body 1, a reinforced concrete structural slab 2, a plain concrete layer 3, a broken stone cushion layer 4, a backfilling broken stone layer 5, a drain pipe 6, a bagged broken stone reverse filter layer 7, a standard retaining wall 8 and a steel pipe pile 9.
Detailed Description
The following examples are carried out on the premise of the technical scheme, and detailed implementation modes and operation processes are given, but the protection scope of the invention is not limited by the following examples.
A step-type continuous variable cantilever retaining wall structure comprises a step retaining wall unit, wherein the step retaining wall unit comprises a reinforced concrete wall body 1, a reinforced concrete structural slab 2, a 100mm thick C15 plain concrete layer 3, a 150mm thick broken stone cushion layer 4 and a backfilling broken stone layer 5 which are sequentially arranged from top to bottom, the reinforced concrete wall body bears the function of lateral retaining and is connected with the reinforced concrete structural slab through fixed connection, the reinforced concrete structural slab bears vertical pressure, and a drain pipe 6 is embedded in the reinforced concrete structural slab; the end part of the drainage pipe is provided with a bagged broken stone reverse filter layer 7 wrapped by geotextile; the ladder-type continuous variable cantilever retaining wall structure comprises a plurality of ladder retaining wall units with different heights, reinforced concrete structural plates of the ladder retaining wall units are connected into a whole, the concrete wall bodies of two adjacent ladder retaining wall units and the groove-type semi-closed space formed by the concrete structural plates form the landscape units, the relative positions of the concrete structures around the space and at the bottom can be regulated and controlled, and the space can be arranged into entertainment landscape areas such as greening space, fountain heaven and earth according to the overall landscape scheme and requirements. The foremost end of the step-type continuous variable cantilever retaining wall structure is a standard retaining wall 8, and a steel pipe pile 9 is arranged at the bottom of the standard retaining wall 8 to serve as a pile foundation.
Every ladder barricade unit wall top elevation design according to actual demand, the different view effect of accessible difference in height change design, the decrement can be optimized according to the difference in height around to the wall thickness of the reinforced concrete wall of ladder barricade unit to follow following principle: the height difference between the unit wall body and the front unit wall body is more than 1.0m, and the thickness of the wall body is 300 mm; if the height difference between the unit wall body and the front unit wall body is less than or equal to 1.0m, the thickness of the wall body is 200 mm.
When the thickness of the wall body of the stepped retaining wall unit is 300mm, the embedding depth of the earth in front of the wall is 800 mm; when the thickness of the wall body of the stepped retaining wall unit is 200mm, the depth of the earth covering buried in front of the wall is 500 mm.
Each ladder barricade unit wall elevation confirm the back, can confirm reinforced concrete wall height according to each condition, wall height computational formula is as follows:
Li＝Hi-Hi+1+di
wherein L isiRepresents the height of the i-th step retaining wall unit wall body HiRepresent No. i ladder barricade unit elevation, di represents the preceding earthing buried depth of ladder barricade unit wall, and T represents ladder barricade unit wall thickness.
The reinforced concrete structure board elevation of each ladder barricade unit be the difference between wall body top elevation and wall body height, the computational formula as follows:
wherein,
and the elevation of the No. i stepped retaining wall unit structure plate is represented.
The structure plate of the stepped retaining wall structure is an integral structure formed by all stepped retaining wall unit structure plates, and the thickness of the structure plate is 300 mm.
The structure board of the initial unit of the plurality of stepped retaining wall units and the structure board of the terminal unit form the front toe and the back heel of the stepped continuous variable cantilever retaining wall structure, the length of the front toe is determined according to the burial depth of the soil before the wall, when the burial depth of the soil before the wall is 800mm, the length of the structure board is 3m, and when the burial depth of the soil before the wall is 500mm, the length of the structure board is 2 m. The length of the heel is determined according to the rear soil covering height of the terminal unit wall, when the rear soil covering height of the wall is more than or equal to 2 and less than 4, the length of the structural plate is 3m, and when the rear soil covering height of the wall is more than 0 and less than 2m, the length of the structural plate is 2 m.
According to the specific embodiment of the invention, the plane layout of the stepped continuously variable cantilever retaining wall is as shown in fig. 1: the upper side is the living square of eminence, and the square elevation is 270.20m, and the downside is the afforestation planting district of low, and the elevation is 266.20m, arranges the requirement according to the view discrepancy in elevation effect, digests both differences in elevation through setting up the level four ladder, and the level four ladder difference in elevation is 270.20m, 269.60m, 268.80m, 267.0m respectively, according to the difference in elevation between preceding and following ladder barricade unit, earthing height and wall thickness before each ladder barricade unit wall can be confirmed. The width of the landscape unit is set according to landscape needs, and the horizontal distance between the front and rear stepped retaining wall units is adjusted. The landscape units are arranged for greening, so that planting soil is firstly backfilled to a designed elevation, and then flowers and plants are paved, so that citizens or tourists can enjoy and stand, and the harmony between people and nature is embodied.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (8)
1. The utility model provides a continuous variable cantilever retaining wall structure of notch cuttype, includes ladder retaining wall unit, ladder retaining wall unit includes: the reinforced concrete wall body bears the lateral soil retaining function and is connected with the reinforced concrete structural slab through fixed connection, the reinforced concrete structural slab bears the vertical pressure, the drain pipe is embedded in the reinforced concrete structural slab, and a plurality of layers of cushion layers are arranged below the reinforced concrete structural slab; the ladder-type continuous variable cantilever retaining wall structure is characterized by comprising a plurality of ladder retaining wall units with different heights, wherein reinforced concrete structural plates of the ladder retaining wall units are connected into a whole, a groove-type semi-closed space formed by concrete walls of two adjacent ladder retaining wall units and concrete structural plates is formed, and landscape units are formed in the groove-type semi-closed space.
2. The stepped continuously variable cantilever retaining wall structure according to claim 1, wherein the height difference between the reinforced concrete wall of the stepped retaining wall unit and the previous stepped retaining wall unit is greater than 1.Om, and the thickness of the reinforced concrete wall body is 280-320 mm; the height difference between the ladder retaining wall unit and the reinforced concrete wall of the previous ladder retaining wall unit is less than or equal to 1.0m, and the thickness of the reinforced concrete wall body is 180-220 mm.
3. The stepped continuously variable cantilever retaining wall structure according to claim 2, wherein when the thickness of the reinforced concrete wall body of the stepped retaining wall unit is 280-320 mm, the depth of the soil covering and burying in front of the wall should reach 800 mm; when the thickness of the reinforced concrete wall body of the stepped retaining wall unit is 180-220 mm, the depth of the earth covering buried in front of the wall is 500 mm.
4. The stepped continuously variable cantilever retaining wall structure according to claim 1, wherein the reinforced concrete wall height calculation formula is as follows:
Li＝Hi-Hi+1+di
wherein L isiThe height H of the reinforced concrete wall body of the No. i step retaining wall unitiLevel of reinforced concrete wall body representing No. i stepped retaining wall unit, Hi+1The elevation of the reinforced concrete wall body of the previous step unit is adopted, and di represents the depth of the buried soil in the front of the step retaining wall unit wall.
5. The stepped continuously variable cantilever retaining wall structure according to claim 1, wherein the reinforced concrete structural slab elevation of each stepped retaining wall unit is the difference between the reinforced concrete wall body top elevation and the reinforced concrete wall body height, and the calculation formula is as follows:
wherein,
represents the i-th step retaining wall unit reinforced concrete structural slab elevation, LiThe height H of the reinforced concrete wall body of the No. i step retaining wall unitiAnd the elevation of the reinforced concrete wall body of the i-th step retaining wall unit is represented.
6. The stepped continuously variable cantilever retaining wall structure according to claim 1, wherein the thickness of the reinforced concrete structural plate is 280 to 320 mm.
7. The stepped continuously variable cantilever retaining wall structure according to claim 1, wherein the reinforced concrete structural plates of the initial unit and the reinforced concrete structural plates of the terminal unit of the plurality of stepped retaining wall units form a front toe and a rear heel of the stepped continuously variable cantilever retaining wall structure, the length of the front toe is determined according to the burial depth of the wall front soil, the length of the structural plates is 3m when the burial depth of the wall front soil is 800mm, and the length of the structural plates is 2m when the burial depth of the wall front soil is 500 mm; the length of the heel is determined according to the rear soil covering height of the terminal unit wall, when the rear soil covering height of the wall is more than or equal to 2 and less than 4, the length of the structural plate is 3m, and when the rear soil covering height of the wall is more than 0 and less than 2m, the length of the structural plate is 2 m.
8. The stepped continuous variable cantilever retaining wall structure according to claim 1, wherein a C15 plain concrete layer with a thickness of 100mm, a gravel cushion layer with a thickness of 150mm and a backfilled gravel layer are sequentially disposed from top to bottom below the reinforced concrete structural slab.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04118426A (en) * | 1990-09-06 | 1992-04-20 | Arai Gumi Ltd | Gravity type retaining wall and execution thereof |
| CN101240548A (en) * | 2008-03-06 | 2008-08-13 | 重庆交通大学 | Two-stage stack-type cantilevered L-shaped blank wall and construction method thereof |
| WO2008108342A1 (en) * | 2007-03-02 | 2008-09-12 | Toeishokou Kabushiki Kaisha | Foundation structure for retaining wall and other structures, up-and-down boundary structure of retaining wall, and retaining wall |
| CN109162295A (en) * | 2018-11-02 | 2019-01-08 | 浙江省工程物探勘察院 | A kind of cast-in-situ steel reinforced concrete gravity retaining wall structure and its construction method |
| CN211735486U (en) * | 2019-10-31 | 2020-10-23 | 上海市政工程设计研究总院（集团）有限公司 | Step-type continuous variable cantilever retaining wall structure |
-
2019
- 2019-10-31 CN CN201911056948.8A patent/CN110878561B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04118426A (en) * | 1990-09-06 | 1992-04-20 | Arai Gumi Ltd | Gravity type retaining wall and execution thereof |
| WO2008108342A1 (en) * | 2007-03-02 | 2008-09-12 | Toeishokou Kabushiki Kaisha | Foundation structure for retaining wall and other structures, up-and-down boundary structure of retaining wall, and retaining wall |
| CN101240548A (en) * | 2008-03-06 | 2008-08-13 | 重庆交通大学 | Two-stage stack-type cantilevered L-shaped blank wall and construction method thereof |
| CN109162295A (en) * | 2018-11-02 | 2019-01-08 | 浙江省工程物探勘察院 | A kind of cast-in-situ steel reinforced concrete gravity retaining wall structure and its construction method |
| CN211735486U (en) * | 2019-10-31 | 2020-10-23 | 上海市政工程设计研究总院（集团）有限公司 | Step-type continuous variable cantilever retaining wall structure |
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