CN117926849A - Construction method and application of high-strength gravity retaining wall - Google Patents
Construction method and application of high-strength gravity retaining wall Download PDFInfo
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- CN117926849A CN117926849A CN202410184623.2A CN202410184623A CN117926849A CN 117926849 A CN117926849 A CN 117926849A CN 202410184623 A CN202410184623 A CN 202410184623A CN 117926849 A CN117926849 A CN 117926849A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
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- 230000002787 reinforcement Effects 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 abstract description 14
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- 238000010008 shearing Methods 0.000 description 2
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Classifications
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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
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
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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
- E02D29/0258—Retaining or protecting walls characterised by constructional features
- E02D29/0275—Retaining or protecting walls characterised by constructional features cast in situ
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
- E03F3/046—Open sewage channels
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- Retaining Walls (AREA)
Abstract
The invention discloses a construction method and application of a high-strength gravity retaining wall, and belongs to the technical field of slope support. The method disclosed by the invention comprises the following steps: s1: the size of the retaining wall structure is designed according to the soil pressure, and the wall body is designed to be a stepped concave section with high inside and low outside; s2: according to a design drawing, excavating a foundation trench, leveling, placing steel bars, mounting and molding a wall body, casting concrete in situ, designing an expansion joint and a water drainage hole on a vertical wall surface, arranging a high-low bottom plate layer between vertical high and low walls, wherein the length of the bottom plate layer is longer than the horizontal distance between the vertical high and low walls, and arranging a support beam in a downward manner on the upper bottom plate layer; a drainage ditch is designed at the bottom of the retaining wall; s3: backfilling planting soil in the wall body groove, and compacting; backfilling the wall body; s4: after backfilling, the wall greening is designed in an 'climbing up and hanging down' mode. The reinforced concrete wall has high structural strength, ensures the wall strength, has low construction difficulty, avoids the repeated masonry of the traditional grouted block stone retaining wall, reduces the labor cost and shortens the construction period.
Description
Technical Field
The invention relates to the technical field of side slope support, in particular to a construction method and application of a high-strength gravity retaining wall.
Background
Gravity type retaining wall refers to a retaining wall which resists soil lateral pressure by means of self weight of a wall body. The gravity type retaining wall can be formed by taking stone blocks, rubble and concrete precast blocks as masonry, or integrally pouring rubble concrete and concrete. The semi-gravity retaining wall can be poured by concrete or low-reinforcement concrete.
Gravity retaining walls can be built from masonry or concrete, and are generally formed into a simple trapezoid. Its advantages are available raw materials, convenient construction and high economic effect. Therefore, the gravity retaining wall is widely applied to projects such as railways, highways, water conservancy, estuaries, mines and the like in China.
In the slope engineering retaining process, the most common retaining structure is a gravity retaining wall, but the traditional gravity retaining wall adopts block stones, sheet stones and concrete precast blocks as masonry, generally does not match with reinforcing steel bars or is only matched with a small amount of reinforcing steel bars in a local range, the height of the wall is below 6m, and the stratum is stable and the safety of adjacent buildings cannot be endangered when earth and stone sides are excavated. The gravity type retaining wall is characterized in that the self gravity of the retaining wall is used for maintaining the stability of the retaining wall under the action of soil pressure, and the retaining wall must have enough overall stability and structural strength to meet the requirements of skid resistance, shearing resistance, anti-overturning and the like, so that the masonry volume of the traditional gravity type retaining wall is larger, the construction period is longer, the cost is higher, meanwhile, the foundation excavation amount is larger, more waste soil is required to be treated, the masonry wall surface is high and steep, the greening is difficult, and the visual landscape is poor. The traditional gravity type retaining wall has obvious defects, long construction period, high construction cost, large foundation excavation amount and difficult re-greening, and the visual perception difference becomes a problem to be solved in the gravity type retaining wall field.
Disclosure of Invention
In view of the above, the invention discloses a construction method and application of a high-strength gravity type retaining wall, which overcomes the defects of long construction period, high construction cost, larger foundation excavation amount, difficult greening and visual perception of the traditional gravity type retaining wall, improves the strength of the retaining wall, reduces the construction period, and simplifies the construction method so as to reduce the labor cost; the gravity retaining wall can be re-greened, and has good sensory experience. Good economic benefit, engineering benefit and environmental benefit can be obtained to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a construction method of a high-strength gravity type retaining wall comprises the following steps:
S1: the size of the retaining wall structure is designed according to the soil pressure, and the wall body is designed to be a stepped concave section with high inside and low outside;
S2: according to a design drawing, excavating a foundation trench, leveling, placing steel bars, mounting and molding a wall body, casting concrete in situ, designing an expansion joint and a water drainage hole on a vertical wall surface, arranging a high-low bottom plate layer between vertical high and low walls, wherein the length of the bottom plate layer is longer than the horizontal distance between the vertical high and low walls, and arranging a support beam in a downward manner on the upper bottom plate layer; a drainage ditch is designed at the bottom of the retaining wall;
s3: backfilling planting soil in the wall body groove, and compacting; backfilling the wall body;
s4: after backfilling, the wall greening is designed in an 'climbing up and hanging down' mode.
Further, in S1, parameters of wall thickness, reinforcement, bottom plate width and transverse support beam spacing are required to be selected according to soil pressure; and selecting the depth and width of the groove according to the total height difference of the wall body and the soil pressure.
Further, the cast-in-place concrete in S2 is not lower than C30.
Further, it is also necessary to provide a sand gravel filtering drainage layer behind the tall vertical wall in S2.
Further, in S2, planting grooves are formed in the bottom plates of the bottom ends of the outer walls of the high and low walls, and drainage ditches are arranged outside the planting grooves.
Further, S3 backfills the planting soil to a sufficient severity of the wall.
Further, in S4, the greening comprises planting a climbing plant on the right side edge of the high wall; arbor is planted on the bottom plate; planting soft plants on the edge of the outer wall; and planting a shrub green belt in the bottom planting groove.
The application of the construction method of the high-strength gravity type retaining wall in the construction of the retaining wall is disclosed.
The retaining wall is constructed by applying the construction method as described above.
Compared with the prior art, the invention has the beneficial effects that:
The construction method of the high-strength gravity type retaining wall has simple steps, and the strength of the wall body is ensured by adding the reinforced structure into the gravity type retaining wall and pouring concrete and utilizing the strength of the reinforced concrete structure; in addition, the addition of the reinforced concrete structure avoids the repeated masonry of the traditional grouted block stone retaining wall, shortens the construction period and reduces the labor cost. The design of wall body section adopts hollow recess section structure, and the planting soil of backfilling has replaced inside block stone of traditional barricade or concrete in the recess, has significantly reduced wall body section reinforced concrete quantity on the one hand to reduced engineering cost, on the other hand has also guaranteed gravity type barricade's has enough severe enough to maintain self stability, and has constructed favourable topography condition for the wall body afforestation. The wall greening adopts climbing up and hanging down and arbor (irrigation) wood shielding, and finally the three-dimensional greening effect is realized. Therefore, the invention can greatly reduce the cost of the retaining wall, reduce the construction period, realize wall greening and obtain better environmental benefit.
The construction method for the high-strength gravity retaining wall, disclosed by the invention, comprehensively considers labor cost, construction period, retaining wall strength, stability and greening effect, has good comprehensive effect, and can obtain good economic benefit, engineering benefit and environmental benefit.
Drawings
Fig. 1 is a schematic perspective view of a reinforced concrete gravity retaining wall structure cast-in-situ by the construction method of the present invention.
Fig. 2 is a schematic sectional view of a cast-in-situ reinforced concrete gravity retaining wall structure.
In the figure: 1-inner wall, 2-outer wall, 3-transverse supporting beam, 4-bottom plate, 5-planting soil, 6-sand gravel reverse filtering layer, 7-water discharge hole, 8-toe drain, 9-backfill soil, 10-climbing plant, 11-soft plant, 12-arbor, 13-shrub greenbelt, 14-planting groove and 15-expansion joint.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
A construction method of a high-strength gravity type retaining wall comprises the following steps:
S1: the size of the retaining wall structure is designed according to the soil pressure, and the wall body is designed to be a stepped concave section with high inside and low outside; the parameters of wall thickness, reinforcement, bottom plate width and transverse support beam spacing are selected according to the soil pressure; and selecting the depth and width of the groove according to the total height difference of the wall body and the soil pressure.
S2: according to a design drawing, excavating a foundation trench, leveling, placing steel bars, mounting and molding a wall body, casting concrete in situ, designing an expansion joint and a water drainage hole on a vertical wall surface, arranging a high-low bottom plate layer between vertical high and low walls, wherein the length of the bottom plate layer is longer than the horizontal distance between the vertical high and low walls, and arranging a support beam in a downward manner on the upper bottom plate layer; a drainage ditch is designed at the bottom of the retaining wall;
a sand gravel filtering drainage layer is arranged behind the high vertical wall; a planting groove is formed in the bottom plate at the bottom end of the outer wall of the high-low wall, and a drainage ditch is arranged outside the planting groove;
And the cast-in-place concrete is not lower than C30.
S3: backfilling planting soil in the wall body groove, and compacting; backfilling the wall body; backfilling the planting soil to the wall body with enough gravity.
S4: after backfilling, wall greening is designed according to an 'climbing up and hanging down' mode: the greening comprises the step of planting climbing plants on the right side edge of the high wall; arbor is planted on the bottom plate; planting soft plants on the edge of the outer wall; and planting a shrub green belt in the bottom planting groove.
Embodiment 2a cast-in-situ reinforced concrete gravity retaining wall structure
Referring to fig. 1 and 2, in the embodiment of the invention, the device comprises a bottom plate (4), an inner wall (1) and an outer wall (2), wherein the bottom plate (4) is used for connecting the inner wall (1) and the outer wall (2) into a whole, drain holes (7) are respectively formed in the middle of the inner wall (1) and the outer wall (2), expansion joints (15) are uniformly formed in the right end of the inner wall (1), a transverse supporting beam (3) is arranged between the middle of the right end of the inner wall (1) and the left top end of the outer wall (2) at intervals, backfilled soil (9) is arranged at the left end of the inner wall (1), planting soil (5) is arranged in a groove in the upper side of the bottom plate (4) between the inner wall (1) and the bottom end of the outer wall (2), a sand gravel filtering layer (6) is arranged in the middle of the left edge of the wall, planting grooves (14) are formed in the bottom side of the right end of the outer wall (2), slope foot drainage grooves (8) are formed in the right end of the inner wall (1), vine plants (10) are arranged on the right side edges of the inner wall (1), and planting grooves (12) are formed in the inner side edges of the bottom plate (14), and the green plants (12) are planted on the inner side edges of the bottom plate (12).
The working principle of the invention is as follows: the cast-in-situ reinforced concrete 'concave' section retaining wall is hollow, so that the reinforced concrete quantity of the section of the wall is greatly reduced, and the construction cost is reduced. The grooves are high and low at the inner side and the outer side to form a step shape, a reinforced concrete transverse support beam is arranged at a certain distance in the middle of the wall body to connect the inner wall and the outer wall to form a whole, and planting soil is backfilled in the grooves in the middle to carry out greening planting. The reinforced concrete cast-in-situ wall body avoids repeated masonry of the grouted block stones, reduces labor cost, greatly shortens construction period and has good quality guarantee effect. Meanwhile, the strength of reinforced concrete is designed and utilized to maintain the integral strength of the wall body and meet the shearing requirement, the wide concave section is utilized to ensure that the bottom of the foundation is fully contacted with the rock-soil body, the wall body is prevented from overturning, and after the soil is planted in the groove in a backfilling mode, on one hand, the wall body is ensured to have enough gravity of the traditional gravity retaining wall, the substrate has enough friction force to prevent the wall body from sliding, on the other hand, the middle backfilling soil replaces the grouted stone or concrete of the traditional gravity retaining wall, and the cost is greatly reduced. On the basis of guaranteeing the overall stability of the wall, steps are formed by utilizing the height difference of the inner wall and the outer wall, planting soil is backfilled in the grooves for tree planting and greening, and the visual landscape is good. The high-strength gravity retaining wall with good comprehensive effect is obtained, and good economic benefit, engineering benefit and environmental benefit can be obtained.
The specific construction method of the invention comprises the following steps:
1. retaining wall structure dimension design
The invention relates to a reinforced concrete retaining wall, wherein the wall body is of a concave section, an inner wall (1) is high, an outer wall (2) is low, the wall body is in a ladder shape, the depth and the width of a groove are designed and determined according to the total height difference of the wall body and the soil pressure, and transverse supporting beams (3) are generally spaced by 3-6 m and are of rectangular sections. The bottom plate (4) connects the inner wall and the outer wall into a whole, and a small planting groove (14) and a slope toe drainage ditch (8) are arranged on the outer wall (2).
2. Reinforced concrete retaining wall design
And (3) lofting according to the design position and the size, and excavating and flattening the foundation trench according to the foundation bearing layer and the foundation burial depth selected by the design. And after the foundation trench is accepted, manufacturing and installing the reinforcing steel bars and molding the wall according to the lofting position, casting in situ according to the specification of designed concrete (the strength is not lower than C30), removing the template after the strength of the concrete reaches the design requirement, and reinforcing the wall for health maintenance. When the wall body is molded and poured, the expansion joint (15) and the water discharge hole (7) are arranged according to the design requirement, the distance between the expansion joints is generally 10-15 m, the joint width is 2-3 cm, three sides of the elastic materials such as asphalt hemp, asphalt bamboo wool or asphalt wood board are adopted for filling, and the depth is not less than 0.15m. The drain hole (7) is preferably made of PVC pipe, and the drain pipe is inclined outwards by 5% in order to ensure smooth drainage.
3. Backfill of planting soil and backfill of backfill soil
After the wall body concrete reaches the design strength, the planting soil (5) can be backfilled in the wall body grooves and the small planting grooves at the bottoms of the wall body grooves, the planting soil is backfilled in layers, the lower soil body is compacted for reducing the sedimentation of the filling soil, the wall body is ensured to have enough gravity, and the quality of the planting soil meets the design requirement.
Backfilling planting soil (5) in the retaining wall groove can be performed after the wall is completed, backfilling soil (9) should be laminated and compacted, and a sand gravel reverse filtering layer (6) is arranged along the wall surface according to design requirements, the thickness of the sand gravel reverse filtering layer is generally not less than 30cm, and smooth drainage is ensured.
4. Greening (greening)
And after backfilling the wall, greening by configuring tree species according to the design. The wall greening is preferably realized by adopting an climbing and hanging mode, namely, the inner side is planted with the climbing plant (10) to climb upwards for growth, and the outer side is planted with the slender soft plant (11) of the branch to hang downwards for growth. A row of arbor (12) is planted in the middle to shade the wall surface, and a planting groove (14) at the basement is planted with a slender small shrub greening (13), so that the effect of three-dimensional greening of the side slope retaining wall is finally realized.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (9)
1. The construction method of the high-strength gravity type retaining wall is characterized by comprising the following steps of:
S1: the size of the retaining wall structure is designed according to the soil pressure, and the wall body is designed to be a stepped concave section with high inside and low outside;
S2: according to a design drawing, excavating a foundation trench, leveling, placing steel bars, mounting and molding a wall body, casting concrete in situ, designing an expansion joint and a water drainage hole on a vertical wall surface, arranging a high-low bottom plate layer between vertical high and low walls, wherein the length of the bottom plate layer is longer than the horizontal distance between the vertical high and low walls, and arranging a support beam in a downward manner on the upper bottom plate layer; a drainage ditch is designed at the bottom of the retaining wall;
s3: backfilling planting soil in the wall body groove, and compacting; backfilling the wall body;
s4: after backfilling, the wall greening is designed in an 'climbing up and hanging down' mode.
2. The construction method of a high-strength gravity retaining wall according to claim 1, wherein parameters of wall thickness, reinforcement, bottom plate width and transverse support beam spacing are selected according to soil pressure in S1; and selecting the depth and width of the groove according to the total height difference of the wall body and the soil pressure.
3. The construction method of a high-strength gravity retaining wall according to claim 1, wherein the cast-in-place concrete in the step S2 is not lower than C30, and the transverse supporting beam is 3-6 m long.
4. The method of constructing a high strength gravity type retaining wall according to claim 1, wherein a sand gravel filtering drainage layer is further provided behind the high vertical wall in S2.
5. The construction method of the high-strength gravity retaining wall according to claim 1, wherein a planting groove is formed in the bottom plate of the bottom end of the outer wall of the high-low wall in the step S2, and a drainage ditch is arranged outside the planting groove.
6. The method of constructing a high strength gravity retaining wall according to claim 1, wherein the S3 backfill planting soil is of sufficient gravity to the wall.
7. The method for constructing a high-strength gravity retaining wall according to claim 1, wherein in S4, the greening comprises planting a climbing plant on the right side edge of the high wall; arbor is planted on the bottom plate; planting soft plants on the edge of the outer wall; and planting a shrub green belt in the bottom planting groove.
8. Use of a method of construction of a high strength gravity retaining wall according to claims 1-7 in construction of a retaining wall.
9. A retaining wall constructed by application of the construction method of claim 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410184623.2A CN117926849A (en) | 2018-11-02 | 2018-11-02 | Construction method and application of high-strength gravity retaining wall |
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| CN201811303313.9A CN109162295A (en) | 2018-11-02 | 2018-11-02 | A kind of cast-in-situ steel reinforced concrete gravity retaining wall structure and its construction method |
| CN202410184623.2A CN117926849A (en) | 2018-11-02 | 2018-11-02 | Construction method and application of high-strength gravity retaining wall |
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| CN110878561A (en) * | 2019-10-31 | 2020-03-13 | 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 |
| CN111034494A (en) * | 2020-01-03 | 2020-04-21 | 上海勘测设计研究院有限公司 | Inverted V-shaped plant planting groove and using method thereof |
| CN111877368A (en) * | 2020-06-29 | 2020-11-03 | 中铁二院重庆勘察设计研究院有限责任公司 | Side slope retaining structure and construction method thereof |
| CN112982296B (en) * | 2021-03-29 | 2023-02-17 | 黄河勘测规划设计研究院有限公司 | Construction method of pile box type retaining wall for slope protection |
| CN113216670B (en) * | 2021-05-14 | 2022-08-23 | 广州市天作建筑规划设计有限公司 | Combined soil retaining structure for protecting existing building and construction method |
| CN115419106A (en) * | 2022-08-19 | 2022-12-02 | 武汉市市政工程机械化施工有限公司 | Vertical retaining wall externally hung plastic-coated steel wire mesh planting vine climbing plant structure and construction method |
| CN115413502A (en) * | 2022-09-27 | 2022-12-02 | 中国五冶集团有限公司 | Assembly type intelligent integrated planting system, control method and installation method |
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| JP3586020B2 (en) * | 1995-09-29 | 2004-11-10 | 東横技研株式会社 | How to plant retaining walls and plantable retaining walls |
| CN205329636U (en) * | 2016-01-16 | 2016-06-22 | 吴海涛 | Hydraulic engineering's retaining wall |
| CN205382508U (en) * | 2016-02-25 | 2016-07-13 | 郭那那 | Dark retaining wall that sluices |
| CN207003363U (en) * | 2017-07-27 | 2018-02-13 | 北京市水利规划设计研究院 | Barrier wall structure and channel revetment system |
| CN209129028U (en) * | 2018-11-02 | 2019-07-19 | 浙江省工程物探勘察院 | A kind of cast-in-situ steel reinforced concrete gravity retaining wall structure |
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2018
- 2018-11-02 CN CN201811303313.9A patent/CN109162295A/en active Pending
- 2018-11-02 CN CN202410184623.2A patent/CN117926849A/en active Pending
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| CN109162295A (en) | 2019-01-08 |
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