CN112376590A - Anti-skidding structure adaptive to swelling and shrinking deformation of expansive soil slope and application method - Google Patents
Anti-skidding structure adaptive to swelling and shrinking deformation of expansive soil slope and application method Download PDFInfo
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- CN112376590A CN112376590A CN202011435048.7A CN202011435048A CN112376590A CN 112376590 A CN112376590 A CN 112376590A CN 202011435048 A CN202011435048 A CN 202011435048A CN 112376590 A CN112376590 A CN 112376590A
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- deformation
- adaptive
- expansive
- sliding
- elastic supports
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/40—Miscellaneous comprising stabilising elements
Abstract
The invention discloses an anti-skidding structure capable of adapting to swelling and shrinking deformation of an expansive soil slope and an application method thereof, and relates to the technical field of geological disaster prevention and control. The anti-skid structure is characterized by comprising a plurality of stiffness members extending along the same direction, the stiffness members are arranged at intervals as anti-skid structure main bodies, the stiffness members are connected through elastic supports to form an integral anti-skid structure, and the connection directions of at least two elastic supports in the anti-skid structure are parallel. In use, the anti-sliding structure realizes the scaling of the anti-sliding structure through the telescopic deformation of the self-adaptive deformation section of the elastic support so as to adapt to the expansion and contraction deformation of the expansive rock-soil mass and weaken the influence of the expansion and contraction deformation of the expansive rock-soil mass on the anti-sliding structure and other auxiliary structures of the side slope.
Description
Technical Field
The invention belongs to the technical field of geological disaster prevention and control, and particularly relates to an anti-skidding structure for self-adaptive expansive soil slope expansion and shrinkage deformation and an application method thereof.
Background
With the development of economic construction in China, large-scale engineering construction begins to extend to special land areas, such as regional frozen soil, expansive soil and the like. In order to meet engineering construction, the terrains of certain areas need to be thoroughly reformed, and the problem of complicated slopes is inevitable. In order to ensure the safety and reliability of the side slope, a single or comprehensive prevention and control mode has to be adopted to improve the stability of the side slope.
Because the expansive soil has obvious water absorption expansion and water loss shrinkage characteristics, the expansive soil side slope engineering problem and geological disaster frequently occur, and the safety of lives and properties of people is threatened for a long time.
The existing expansive soil slope protection is usually provided with slide-resistant piles. The anti-slide pile is used as a slope reinforcing structure with remarkable anti-slide effect, simple and feasible construction and flexible and changeable arrangement, and is widely applied to landslide control.
Disclosure of Invention
The traditional slide-resistant piles arranged in the expansive soil side slope are influenced by the action of expansive force, have more complex internal force and deformation characteristics and obvious time effect, and are not beneficial to the long-term stability of the slide-resistant piles and other slope auxiliary structures.
Therefore, in the technical field of geological disaster prevention and control, an anti-skid structure which is adaptive to the characteristics of expansive soil and can be correspondingly contracted and expanded and adjusted according to the expansion and contraction deformation of the expansive soil slope is needed. Therefore, the invention provides an anti-skid structure adaptive to the swelling and shrinking deformation of an expansive soil slope and an application method, and the problems are solved by the following technical points:
the anti-slip structure is characterized by comprising a plurality of stiffness members extending in the same direction, the stiffness members are arranged at intervals as anti-slip structure main bodies, the stiffness members are connected through elastic supports to form an integral anti-slip structure, and the connection directions of at least two elastic supports in the anti-slip structure are parallel.
As described above, since the conventional slide-resistant pile disposed in unstable expansive rock-soil mass has high bending rigidity, when expansive soil absorbs water and expands, the expansive soil and the expansive soil form reinforcing constraints with each other, so that expansive force cannot be effectively released, and internal forces of the expansive soil and the slide-resistant pile are further increased, thereby affecting long-term stability of the slide-resistant pile and other auxiliary structures. The invention therefore provides a skid-resistant structure formed by combining a plurality of stiffening elements through elastic support connection, the skid-resistant structure is provided with a plurality of stiffening elements which are arranged along the same direction and are parallel to each other, and the stiffening elements which are separated from each other can weaken the influence of expansion and contraction of expansive soil on the skid-resistant structure through changing the mutual position relationship. The resilient supports connect the various stiffening elements and maintain the integrity of the slip resistant structure, and the resilient supports may be in a range of tensile compression to accommodate variations in the relative positions between the stiffening elements. The arrangement of at least two elastic supports with parallel connecting directions is beneficial to keeping the consistency of the anti-skid structure.
The further technical scheme is as follows:
the cross section of each stiff element is L-shaped, the anti-skid structure comprises four stiff elements, the four stiff elements are enclosed to form the boundary of the anti-skid structure, and the enclosed shape of the four stiff elements is rectangular. In this technical feature, the structural form of the anti-skid structure is specifically defined. The stiffening elements with the L-shaped cross sections are beneficial to assembly between the elements, so that the whole anti-skid structure is more compact.
The elastic support is used for connecting adjacent stiff members and comprises a self-adaptive deformation section, a non-self-adaptive deformation section and a connecting piece, the self-adaptive deformation section is used as the center, the head end and the tail end of the self-adaptive deformation section are connected with the non-self-adaptive deformation section, and the other end of the non-self-adaptive deformation section is provided with the connecting piece used for being connected with the stiff members in an installing mode. In this technical feature, a structure of the elastic support is specifically described, in which the adaptive deformation section can be deformed telescopically as a main structure for realizing the scaling of the anti-skid structure and adapting the expansion and contraction deformation of the expansive soil.
In order to avoid collision of adjacent stiff members, the maximum deformation length of the self-adaptive deformation section is set to be smaller than or equal to the spacing distance between two stiff members connected with the self-adaptive deformation section. In order to enable the adaptive deformation section to exert the adaptive deformation capability of the structure to the maximum extent, preferably, the maximum deformation length of the adaptive deformation section is equal to the spacing distance between the two stiffening elements connected with the adaptive deformation section.
The stiffening member is provided with a mounting groove for mounting the elastic support, the longitudinal section of the connecting piece is I-shaped, and the connecting piece and the mounting groove are clamped and mounted. The fastening installation between connecting piece and the mounting groove makes the assembly between strength nature component and the elastic support simple quick, is favorable to promoting manufacturing, the efficiency of construction of this antiskid structure.
In order to avoid interference generated when the adjacent elastic supports are installed, the two adjacent elastic supports which are arranged at an angle are mutually staggered.
In order to make the connection between the stiffening elements more stable and firm, it is provided that the elastic supports are arranged in the longitudinal extension direction of the stiffening elements. The specific setting position, interval, number and other parameters of the system are determined according to specific use scene measurement and accounting analysis.
The stiff members and the resilient supports have corrosion resistance to provide the slip resistant structure with a longer service life.
An application method of an anti-slip structure capable of self-adapting to swelling and shrinking deformation of an expansive soil slope is based on any one of the anti-slip structures, and is characterized in that the anti-slip structure is applied to an expansive rock-soil body, the position of the anti-slip structure is set to meet the condition that the arrangement trend of at least two stiffness members arranged at intervals is the same as the sliding trend direction of the expansive rock-soil body, and the arrangement of elastic supports meets the condition that the connection trend of at least two elastic supports is the same as the sliding trend direction of the expansive rock-soil body.
Compared with the prior art, the invention has the beneficial effects that:
the invention has scientific and reasonable structure and safe and convenient use. In the invention, the anti-skid structure is formed by connecting a plurality of stiffening components which are arranged in parallel at intervals through the elastic support, and the elastic support is formed by a connecting piece, a non-adaptive deformation section and an adaptive deformation section. In use, the anti-sliding structure realizes the scaling of the anti-sliding structure through the telescopic deformation of the self-adaptive deformation section of the elastic support so as to adapt to the expansion and contraction deformation of the expansive rock-soil mass and weaken the influence of the expansion and contraction deformation of the expansive rock-soil mass on the anti-sliding structure and other auxiliary structures of the side slope.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is an overall three-dimensional schematic view of the anti-skid structure of the present invention;
FIG. 2 is a schematic view of the structure of the flexible support of the present invention;
FIG. 3 is a schematic view of the assembly of the stiffening elements and the elastic supports of the present invention;
FIG. 4 is a schematic structural view of the anti-skid structure applied to an expansive soil slope;
in the figure: 1. sliding the bed; 2. expansive rock-soil mass; 3. an anti-skid structure; 4. a stiffening element; 5. mounting grooves; 6. elastic support; 7. a connecting member; 8. a non-adaptive deformation segment; 9. and (4) self-adapting to a deformation section.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1:
as shown in fig. 1-3, the anti-slip structure capable of adapting to swelling and shrinking deformation of the expansive soil slope is characterized in that the anti-slip structure 3 comprises a plurality of stiff members 4 extending in the same direction, the stiff members 4 are arranged at intervals as main bodies of the anti-slip structure 3, the stiff members 4 are connected through elastic supports 6 to form the integral anti-slip structure 3, and the connection direction of at least two elastic supports 6 in the anti-slip structure 3 is parallel.
As described above, since the conventional slide-resistant pile installed in the unstable expansive rock-soil mass 2 has a high bending stiffness, when the expansive rock-soil mass 2 absorbs water and expands, it forms a reinforcing constraint with the expansive rock-soil mass 2, so that the expansive force cannot be effectively released, and the internal forces of the expansive rock-soil mass 2 and the slide-resistant pile are further increased, thereby affecting the long-term stability of the slide-resistant pile and other auxiliary structures. The invention thus provides a skid-resistant structure 3 formed by connecting and combining a plurality of stiffening elements 4 through elastic supports 6, the skid-resistant structure 3 is provided with a plurality of stiffening elements 4 which are arranged along the same direction and are parallel to each other, and the stiffening elements 4 which are separated from each other can weaken the influence of the expansion and contraction of the expansive rock-soil body 2 on the skid-resistant structure 3 through the change of the mutual position relation. The elastic supports 6 connect the different stiffening elements 4, maintaining the integrity of the anti-skid structure 3, and the elastic supports 6 may be stretched and compressed within a certain range to accommodate the change in relative position between the stiffening elements 4. The provision of at least two elastic supports 6 with parallel connecting runs is advantageous for maintaining the consistency of the anti-skid structure 3.
Example 2:
this example is further defined on the basis of example 1:
the cross section of the stiff element 4 is in an L shape, the anti-skid structure 3 comprises four stiff elements 4, the four stiff elements 4 are enclosed to form the boundary of the anti-skid structure 3, and the enclosed shape is a rectangle. In this technical feature, the structural form of the anti-skid structure 3 is specifically defined. The stiffening elements 4 of the L-shaped cross-section facilitate the assembly from element to element, making the entire anti-skid structure 3 more compact.
The elastic support 6 is used for connecting adjacent stiff members 4, the elastic support 6 comprises a self-adaptive deformation section 9, a non-self-adaptive deformation section 8 and a connecting piece 7, the self-adaptive deformation section 9 is used as the center, the head end and the tail end of the self-adaptive deformation section 9 are connected with the non-self-adaptive deformation section 8, and the connecting piece 7 used for being connected with the stiff members 4 in an installing mode is arranged at the other end of the non-self-adaptive deformation section 8. In this technical feature, the structure of the elastic support 6 is specifically described, wherein the adaptive deformation section 9 can be deformed telescopically as the main structure for realizing the scaling and the expansion and contraction deformation of the anti-skid structure 3.
In order to avoid collision of adjacent stiff elements 4, the maximum deformation length of the adaptive deformation section 9 is set to be less than or equal to the spacing distance between two stiff elements 4 connected with the adaptive deformation section. In order to make the adaptive deformation segment 9 exert the adaptive deformation capability of the structure to the maximum extent, preferably, the maximum deformation length of the adaptive deformation segment 9 is equal to the spacing distance between the two stiffening elements 4 connected with the adaptive deformation segment.
The stiffening member 4 is provided with an installation groove 5 for installing the elastic support 6, the longitudinal section of the connecting piece 7 is I-shaped, and the connecting piece 7 is clamped and installed with the installation groove 5. The fastening installation between the connecting piece 7 and the installation groove 5 enables the stiff components 4 and the elastic supports 6 to be assembled simply and quickly, and is beneficial to improving the manufacturing and construction efficiency of the anti-skid structure 3.
In order to avoid interference between adjacent elastic supports 6 during installation, the two adjacent elastic supports 6 arranged at an angle are staggered.
In order to make the connection between the stiffening elements more stable and firm, it is provided that the elastic supports 6 are arranged in line along the longitudinal extension of the stiffening elements 4. The specific setting position, interval, number and other parameters of the system are determined according to specific use scene measurement and accounting analysis.
The stiff elements 4 and the resilient supports 6 have a corrosion resistance so that the anti-skid structure 3 has a long service life.
Example 3:
as shown in fig. 4, an application method of an anti-skid structure adaptive to swelling and shrinking deformation of an expansive soil slope is based on any one of the anti-skid structures 3, and is characterized in that the anti-skid structure 3 is applied and arranged in an expansive rock-soil body 2, the anti-skid structure 3 is arranged in a position which satisfies that the arrangement direction of at least two stiffening members 4 arranged at intervals is the same as the sliding trend direction of the expansive rock-soil body 2, and the arrangement of the elastic supports 6 satisfies that the connection direction of at least two elastic supports 6 is the same as the sliding trend direction of the expansive rock-soil body 2.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The self-adaptive expansive soil slope expansion and contraction deformation anti-slip structure is characterized in that the anti-slip structure (3) comprises a plurality of stiffness members (4) extending in the same direction, the stiffness members (4) are arranged at intervals as main bodies of the anti-slip structure (3), the stiffness members (4) are connected through elastic supports (6) to form the integral anti-slip structure (3), and the connection directions of at least two elastic supports (6) in the anti-slip structure (3) are parallel.
2. The sliding structure capable of adapting to the expansion and contraction deformation of the expansive soil slope as claimed in claim 1, wherein the cross section of the stiff members (4) is L-shaped, the sliding structure (3) comprises four stiff members (4), and the four stiff members (4) are enclosed to form the boundary of the sliding structure (3), and the enclosed shape is rectangular.
3. The sliding-resistant structure capable of adapting to swelling and shrinking deformation of the expansive soil slope according to claim 2, wherein the elastic support (6) is used for connecting adjacent stiff members (4), the elastic support (6) comprises an adaptive deformation section (9), a non-adaptive deformation section (8) and a connecting piece (7), the adaptive deformation section (9) is a center, the head and tail ends of the adaptive deformation section (9) are connected with the non-adaptive deformation section (8), and the other end of the non-adaptive deformation section (8) is provided with the connecting piece (7) for being installed and connected with the stiff members (4).
4. A sliding-resistant structure for slope expansion and contraction deformation with adaptive expansive soil according to claim 3, wherein the maximum deformation length of the adaptive deformation section (9) is less than or equal to the spacing distance between two stiffening elements (4) connected with the adaptive deformation section.
5. The anti-slip structure capable of adapting to swelling and shrinking deformation of the expansive soil slope according to claim 3, wherein the stiff members (4) are provided with mounting grooves (5) for mounting elastic supports (6), the longitudinal section of the connecting piece (7) is in an I shape, and the connecting piece (7) is clamped and mounted with the mounting grooves (5).
6. A sliding resistance structure to adapt to the expansion and contraction deformation of expansive soil slope according to claim 5, wherein the two adjacent elastic supports (6) arranged at an angle are staggered with each other.
7. A sliding resistance structure adapted to the expansion and contraction deformation of expansive soil slope according to claim 1, wherein the elastic supports (6) are arranged in line along the extending direction of the stiffness elements (4).
8. A sliding resistance structure to adaptive expansive soil slope expansion and contraction deformation according to claim 1, wherein the stiff members (4) and the elastic supports (6) have corrosion resistance.
9. An application method of an anti-skid structure capable of adapting to swelling and shrinking deformation of an expansive soil slope is based on the anti-skid structure (3) of any one of claims 1 to 8, and is characterized in that the anti-skid structure (3) is applied and arranged in the expansive rock-soil body (2), the anti-skid structure (3) is arranged in a position which meets the condition that the arrangement trend of at least two stiffness components (4) which are arranged at intervals is the same as the sliding trend direction of the expansive rock-soil body (2), and the arrangement of the elastic supports (6) meets the condition that the connection trend of at least two elastic supports (6) is the same as the sliding trend direction of the expansive rock-soil body (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011435048.7A CN112376590A (en) | 2020-12-10 | 2020-12-10 | Anti-skidding structure adaptive to swelling and shrinking deformation of expansive soil slope and application method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011435048.7A CN112376590A (en) | 2020-12-10 | 2020-12-10 | Anti-skidding structure adaptive to swelling and shrinking deformation of expansive soil slope and application method |
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| CN112376590A true CN112376590A (en) | 2021-02-19 |
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| CN202011435048.7A Pending CN112376590A (en) | 2020-12-10 | 2020-12-10 | Anti-skidding structure adaptive to swelling and shrinking deformation of expansive soil slope and application method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112922633A (en) * | 2021-01-29 | 2021-06-08 | 宁波朗达工程科技有限公司 | Expansion rock tunnel expansion deformation compensation cushion layer structure |
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| CN209114488U (en) * | 2018-11-01 | 2019-07-16 | 中铁武汉勘察设计研究院有限公司 | Prevent the expansive soil cut slope support structure on landslide |
| CN111501797A (en) * | 2020-05-06 | 2020-08-07 | 中铁二院工程集团有限责任公司 | Anti-skidding structure for reducing deformation of structures on landslide |
| CN111648387A (en) * | 2020-06-10 | 2020-09-11 | 广东省工程勘察院 | Construction method of stiffness variable-section high-pressure jet grouting pile slide-resistant wall |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020138925A1 (en) * | 2001-03-27 | 2002-10-03 | Ming-Huang Chang | Vibration resistive instant responding roadway or bridge expansion joint and construction method of the same |
| US20030188496A1 (en) * | 2002-04-09 | 2003-10-09 | Williams Jonathan P. | Structural slab and wall assembly for use with expansive soils |
| CN209114488U (en) * | 2018-11-01 | 2019-07-16 | 中铁武汉勘察设计研究院有限公司 | Prevent the expansive soil cut slope support structure on landslide |
| CN109137942A (en) * | 2018-11-09 | 2019-01-04 | 西安科技大学 | A kind of the expansive soil slope adaptive draining friction pile of deformation and construction method |
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| CN112922633A (en) * | 2021-01-29 | 2021-06-08 | 宁波朗达工程科技有限公司 | Expansion rock tunnel expansion deformation compensation cushion layer structure |
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Application publication date: 20210219 |