CN216041219U - A multistage retaining structure for side slope is administered - Google Patents
A multistage retaining structure for side slope is administered Download PDFInfo
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- CN216041219U CN216041219U CN202121498175.1U CN202121498175U CN216041219U CN 216041219 U CN216041219 U CN 216041219U CN 202121498175 U CN202121498175 U CN 202121498175U CN 216041219 U CN216041219 U CN 216041219U
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Abstract
A multi-stage retaining structure for slope management comprises a first-stage retaining structure located at a low position, a second-stage retaining structure located at a high position and slope protection in the middle, wherein the first-stage retaining structure comprises a first cast-in-situ bored pile, a crown beam and a cantilever type retaining plate and is suitable for slope toe retaining, the retaining side can be made vertical, the structure bearing capacity is high, and the retaining height is large; the middle slope protection comprises slope protection bricks and a cushion layer, spray anchor support can be adopted if necessary, the stress mode of a primary and secondary retaining structure can be improved by the middle slope protection, and the vertical retaining height is reduced; the secondary retaining structure comprises two rows of second cast-in-situ bored piles, a pile top bearing platform and an upper gravity type retaining wall, and is suitable for retaining on the slope top, and the retaining height is large. The integral structure of the utility model integrates a plurality of retaining forms such as side slope protection, a row pile retaining wall, a retaining wall and the like, is safe and reliable, is particularly suitable for side slope management engineering with limited space, and has good integral stability and practicability.
Description
Technical Field
The utility model relates to the field of slope management, in particular to a multi-stage retaining structure for slope management.
Background
The west, the top, the east and the bottom of the country are vertical and horizontal. Many urban terrains in China fluctuate, and mountain terrains are common in municipal engineering projects. For mountain landforms, slope management is the first place to rush, and slope management modes are various and are most widely used in slope protection and building and spray anchor support. However, the method of slope protection by simply putting a slope occupies a lot of fields, in many projects, the urban construction land is limited, and only slope protection cannot be utilized, so that a vertical retaining structure is needed; the vertical retaining structure can save site conditions to the maximum extent, but the application conditions are limited, the vertical retaining structure cannot be used when exceeding a certain height, and the manufacturing cost is higher than that of slope protection. In order to solve the problem of slope management in a limited area of a site, the best mode is to combine slope protection with a vertical retaining structure, make full use of respective points and design the most appropriate retaining structure.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model aims to provide a multistage retaining structure for slope management, under a front dike which ensures the safety and stability of a slope, a vertical retaining structure and slope protection are combined, the construction land occupied by the slope multistage protection can be optimized to the maximum extent, the first-stage retaining structure and the second-stage retaining structure are reasonable in stress and flexible in height setting, the middle slope protection mode can be flexibly adjusted according to the height, the multistage retaining structure is particularly suitable for the slope management engineering with limited space, and the multistage retaining structure has good overall stability and practicability.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the utility model provides a multistage retaining structure for side slope is administered which characterized in that: the urban road slope protection system comprises a primary retaining structure located between a low municipal road and a side slope, a secondary retaining structure located between a high municipal road and the side slope, and a middle side slope protection arranged along the side slope;
the primary retaining structure comprises a cantilever type retaining plate, a pile top crown beam and a first cast-in-situ bored pile, the first cast-in-situ bored pile is arranged at the joint of the side slope and the low municipal road, the pile top crown beam is arranged at the top of the first cast-in-situ bored pile, and the cantilever type retaining plate is arranged at the top of the pile top crown beam;
the secondary retaining structure comprises a retaining wall, a pile top bearing platform, a bearing platform cushion layer and a second cast-in-situ pile, wherein the retaining wall is positioned between the high municipal road and the side slope, the pile top bearing platform is arranged at the bottom of the retaining wall, the second cast-in-situ pile is arranged at the bottom of the pile top bearing platform, and the bearing platform cushion layer is arranged between the bottom of the pile top bearing platform and the top of the second cast-in-situ pile;
the middle slope protection comprises a slope protection step arranged along the slope and a slope cushion layer positioned at the bottom of the slope protection step.
Furthermore, the cantilever type soil retaining plate, the pile top crown beam, the first cast-in-situ bored pile, the pile top bearing platform and the second cast-in-situ bored pile are all made of reinforced concrete; the protection and building are concrete protection and building or grouted rubble protection and building, and the side slope cushion layer and the bearing platform cushion layer are made of plain concrete.
Further, the second cast-in-situ bored piles are arranged in at least two rows.
Furthermore, the side slope protection at the middle part is also provided with a spray anchor, and the protection building is a reinforced mesh concrete spraying structure.
Furthermore, the retaining wall is a vertical retaining structure, and the retaining wall is preferably a gravity retaining wall or a cantilever type reinforced concrete slab.
The primary retaining structure comprises cantilever type retaining plates, pile top crown beams and first cast-in-place bored piles, the lateral bearing capacity of the row pile retaining wall formed by combination is high, the retaining height is large, the retaining plates can avoid water and soil loss of an upper slope body, and the slope stability is guaranteed; the secondary retaining structure comprises second cast-in-situ bored piles, a pile top bearing platform and a retaining wall, and the existence of two rows of second cast-in-situ bored piles improves the overall stability of the retaining structure so that the retaining structure can be stably located on the top of a side slope; the middle slope protection can only set up protection step and bed course when the condition allows, can set up the spray anchor when the condition is restricted and strut, and its height and slope rate can be adjusted according to the place with the ground condition is nimble, uses with first grade, second grade retaining structure cooperation and more can exert its economic nature.
Compared with the traditional slope management mode, the multistage retaining structure for slope management has the advantages that:
1, the utility model can reduce the occupied area, reduce the requirements of the slope management scheme on the construction site and has wider application range. According to the traditional multistage slope-releasing treatment scheme, the slope rate of the slope has the standard limit requirement, the slope rate is generally slow, the occupied area is large, and the application in the municipal field in cities is limited. The utility model better solves the problem.
2, perpendicular fender structure can furthest's saving site condition, but the application condition is comparatively limited, exceeds a take the altitude and just can't use, and the standard has more restriction to the simple stack use of multilayer perpendicular fender structure. According to the utility model, the multiple layers of retaining structures are skillfully stacked together by using the cast-in-place bored piles, so that the requirements of the relevant regulations in section 5.4 of building foundation design Specifications (GB50007-2011) can be met, and a larger retaining height can be borne.
3, the protection scheme of the middle side slope can adopt prefabricated hexagonal blocks or concrete protection and building, and can also adopt spray anchor support, the measures can be weak or strong, the slope rate of the side slope can be flexibly adjusted, and the applicability is further enhanced.
4, the utility model has flexible overall arrangement, safe and reliable structure and controllable quality, and can effectively ensure the stability of the side slope.
Drawings
FIG. 1 is a sectional view of a multi-stage retaining structure for slope treatment in the embodiment.
The components in the figures are numbered as follows: the low municipal road 001, the high municipal road 002, the first-level retaining structure 100, the middle slope protection 200 and the second-level retaining structure 300; wherein, one-level fender 100 structure includes: cantilever type soil retaining plates 11, pile top crown beams 12 and first cast-in-situ bored piles 13; middle part side slope protection 200 includes: a protective masonry 21, a slope cushion layer 22 and a spray anchor 23; the secondary retaining structure 300 includes: retaining wall 31, pile top cushion cap 32, cushion cap layer 33, second bored concrete pile 34.
Detailed Description
For a better understanding of the present invention, the following detailed description of the present invention is provided in connection with specific examples.
Referring to fig. 1, the multistage retaining structure for slope management of the present embodiment includes a first-stage retaining structure 100 located between a low municipal road 001 and a slope, a second-stage retaining structure 300 located between a high municipal road 002 and the slope, and a middle slope protection 200 disposed along the slope; the three-level supporting and retaining construction measures can determine the height of each supporting and retaining according to the engineering site conditions.
As shown in fig. 1, the primary retaining structure 100 in this embodiment includes: cantilever type soil retaining plates 11, pile top crown beams 12 and first cast-in-situ bored piles 13; the first cast-in-situ bored pile 13 is arranged at the joint of a side slope and a low municipal road 001, the pile top crown beam 12 is arranged at the top of the first cast-in-situ bored pile 13, and the cantilever type soil retaining plate 11 is arranged at the top of the pile top crown beam 12.
The first cast-in-situ bored pile 13 is a main stress member, bears most of lateral water and soil pressure, and has high rigidity and high deformation resistance. One-level retaining structure sets up cantilever type and keeps off native board 11, can effectual reduction engineering cost, and the structure is seamless, and it is better to keep off the native loss of soil of effect, avoids the upper portion slope body. The pile top crown beam 12 of the primary retaining structure serves as a connecting component between the row piles and also serves as a foundation of the cantilever type retaining plate, and the load on the cantilever type retaining plate is transmitted to the cast-in-situ bored pile.
The cantilever type retaining plate 11 is generally 1/2 with the retaining height of 100 of a primary retaining structure, the thickness of the cantilever type retaining plate is 300-500 mm, the section of the cantilever type retaining plate is gradually changed, a surface slope is formed, and the retaining plate on the upper portion can effectively avoid water and soil loss of surface soil of the middle slope; the first cast-in-situ bored pile 13 has stronger lateral stiffness, the length, diameter and distance of the pile are determined by controlling the deformation (the 13.2.9 specified deformation limit value is 10mm in GB50330-2013 technical Specification for building slope engineering) of the pile at the position where the pile exits from the ground, and the compressive and flexural bearing capacity of the pile body is calculated to determine the reinforcement; the pile diameter is 800-1200 mm, the pile spacing is 1000mm, in addition, the row pile retaining wall also has to ensure that the deep sliding of the side slope does not occur, and the reinforcement of the first cast-in-situ bored pile 13 is determined according to the bending moment and the shearing force with the worst cross section; the top of the cast-in-place pile 13 is provided with a crown beam 12 which is used as a foundation of the cantilever type retaining plate 11 and is also used as a connecting component between the first cast-in-place piles 13 to enhance the integrity of the primary retaining structure 100, and the width of the pile top crown beam 12 is +200mm, and the height is generally 1000 mm.
Referring to fig. 1, the middle slope protection 200 in this embodiment includes a slope protection 21 disposed along a slope and a slope pad 22 disposed at the bottom of the slope protection 21.
The middle slope protection 200 determines the slope rate of the slope by calculating the anti-slip stability coefficient of the slope, when the engineering construction site is abundant, a slow slope rate can be adopted, and then a simpler construction measure is adopted on the slope to construct a slope protection step 21 and a protection step slope cushion layer 22; when the engineering construction site is limited and the site does not have enough construction site, a steep slope rate can be adopted, and then the slope surface adopts the support measures of the spray anchors 23, so that the space is saved, and the slope stability is ensured.
The side slope protection and building is generally prefabricated hexagonal blocks or concrete protection and building or grouted rubble protection and building, the spray anchor support is an anchor rod, the slope surface is provided with a reinforcing mesh, and then concrete is sprayed.
Referring to fig. 1, the secondary retaining structure 300 in this embodiment includes a retaining wall 31, a pile top cap 32, a cap cushion 33, and a second cast-in-situ bored pile 34. Retaining wall 31 is located between eminence town road 002 and the side slope, retaining wall 31 bottom is provided with pile bolck cushion cap 32, pile bolck cushion cap 32 bottom is provided with second bored concrete pile 34, is provided with cushion cap bed course 33 between pile bolck cushion cap 32 bottom and the second bored concrete pile 34 top.
The second cast-in-situ bored piles 34 are the foundation of the retaining wall, and the arrangement of two rows of the second cast-in-situ bored piles enhances the overall stability of the retaining structure; generally, there are many restrictions on the slope top for setting up the retaining wall, and this problem can be solved effectively to adopt double row bored concrete piles + pile bolck cushion cap, and bored concrete piles enable the retaining wall to sit firmly in the slope top.
As a preferred scheme, the retaining wall 31 of the secondary retaining structure is a vertical retaining structure, which can bear a higher retaining height and reduce the occupied area. Pile bolck cushion cap 32 of second grade fender structure is the biography power platform between retaining wall and the second bored concrete pile, also is the even component of being between the second bored concrete pile, can effectively transmit the structural load, and the fender structure is linked as a whole with the second grade, is the indispensable partly of campshed foundation.
Two rows of second cast-in-situ bored piles 34, which serve as foundations for the upper retaining wall 31, share the water and soil pressure transmitted from the upper portion; the foundation is a deep foundation and resists the integral instability of the side slope together with the first cast-in-situ bored pile 13 in the primary retaining structure 100, the safety and the stability of the secondary retaining structure 300 positioned at the top of the side slope can be ensured, and the pile length, the pile diameter and the reinforcement are calculated by checking the anti-slip stability performance and the compressive and anti-bending bearing capacity of the pile body. The pile top bearing platform 32 is mainly used as a connecting component of the upper retaining wall 31 and the cast-in-situ bored pile, and needs to meet the bearing capacity requirements of vertical force and horizontal water and soil pressure and also needs to meet certain construction requirements. The retaining wall 31 is a vertical retaining structure, and can adopt a gravity type retaining wall when the retaining height is smaller or the soil quality is better, and can adopt a cantilever type reinforced concrete slab when the retaining height is larger or the soil quality is worse, and the section size of the retaining wall is determined by checking the anti-slip and anti-overturning stability. The cushion 33 of the platform is a structural requirement.
The cantilever type soil retaining plate 11, the pile top crown beam 12, the first cast-in-situ bored pile 13, the pile top bearing platform 32 and the second cast-in-situ bored pile 34 are all made of reinforced concrete; the protective masonry 21 is a concrete protective masonry or a grouted rubble protective masonry, and when the concrete protective masonry is a spray anchor support, the protective masonry 21 is a reinforced mesh concrete spraying structure; the retaining wall 31 may be a gravity type retaining wall such as plain concrete, grouted rubble, or a cantilever type reinforced concrete slab; the slope cushion layer 22 and the bearing platform cushion layer 33 are made of plain concrete.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make several variations and modifications without departing from the inventive concept of the front bank, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. The utility model provides a multistage retaining structure for side slope is administered which characterized in that: the urban road protection system comprises a first-level retaining structure (100) located between a low municipal road (001) and a side slope, a second-level retaining structure (300) located between a high municipal road (002) and the side slope, and a middle side slope protection (200) arranged along the side slope;
the primary retaining structure (100) comprises a cantilever type retaining plate (11), a pile top crown beam (12) and a first cast-in-situ pile (13), wherein the first cast-in-situ pile (13) is arranged at the joint of a side slope and a low municipal road (001), the pile top crown beam (12) is arranged at the top of the first cast-in-situ pile (13), and the cantilever type retaining plate (11) is arranged at the top of the pile top crown beam (12);
the secondary retaining structure (300) comprises a retaining wall (31), a pile top bearing platform (32), a bearing platform cushion layer (33) and a second cast-in-situ pile (34), wherein the retaining wall (31) is positioned between a high municipal road (002) and a side slope, the pile top bearing platform (32) is arranged at the bottom of the retaining wall (31), the second cast-in-situ pile (34) is arranged at the bottom of the pile top bearing platform (32), and the bearing platform cushion layer (33) is arranged between the bottom of the pile top bearing platform (32) and the top of the second cast-in-situ pile (34);
the middle side slope protection (200) comprises a side slope protection step (21) arranged along the side slope and a side slope cushion layer (22) located at the bottom of the side slope protection step (21).
2. The multistage retaining structure for side slope management according to claim 1, wherein the cantilever type retaining plate (11), the pile top crown beam (12), the first cast-in-situ bored pile (13), the pile top bearing platform (32) and the second cast-in-situ bored pile (34) are all made of reinforced concrete; the protective masonry (21) is prefabricated hexagonal blocks or concrete protective masonry or grouted rubble protective masonry, and the side slope cushion layer (22) and the bearing platform cushion layer (33) are made of plain concrete.
3. A multi-stage retaining structure for slope treatment according to claim 2, wherein the second bored piles (34) are arranged in at least two rows.
4. The multi-stage supporting and retaining structure for side slope management according to claim 1, wherein the side slope protection (200) in the middle part is further provided with a spray anchor (23), and the revetment (21) is a steel mesh concrete-sprayed structure.
5. The multistage retaining structure for slope treatment according to claim 1, wherein the retaining wall (31) is a vertical retaining structure, and the retaining wall (31) is a gravity retaining wall or a cantilever reinforced concrete slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121498175.1U CN216041219U (en) | 2021-07-02 | 2021-07-02 | A multistage retaining structure for side slope is administered |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121498175.1U CN216041219U (en) | 2021-07-02 | 2021-07-02 | A multistage retaining structure for side slope is administered |
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| Publication Number | Publication Date |
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| CN216041219U true CN216041219U (en) | 2022-03-15 |
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| CN202121498175.1U Active CN216041219U (en) | 2021-07-02 | 2021-07-02 | A multistage retaining structure for side slope is administered |
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