CN113756217B - Collapse falling stone protection net structure with toughness energy dissipation function and installation method - Google Patents
Collapse falling stone protection net structure with toughness energy dissipation function and installation method Download PDFInfo
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- CN113756217B CN113756217B CN202111162761.3A CN202111162761A CN113756217B CN 113756217 B CN113756217 B CN 113756217B CN 202111162761 A CN202111162761 A CN 202111162761A CN 113756217 B CN113756217 B CN 113756217B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
- E01F7/04—Devices affording protection against snowslides, avalanches or falling rocks, e.g. avalanche preventing structures, galleries
- E01F7/045—Devices specially adapted for protecting against falling rocks, e.g. galleries, nets, rock traps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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Abstract
The invention discloses a collapsed rockfall protective net structure with a toughness energy dissipation function, relating to the technical field of toughness energy dissipation protective net structures and comprising the following steps: the supporting columns are arranged in a plurality and are arranged at intervals along a slope supporting track; fences arranged in a plurality at intervals along the length direction of the strut, each of the fences extending along the interval arrangement direction of the strut; a cushioning means for connecting the fence to the post; the steel wire mesh is fixedly arranged on the fence; the buffer devices can perform telescopic buffering, and the telescopic buffering strength of the buffer devices is configured to drive the steel wire mesh to approach to and keep a vertical state after the falling rocks are protected.
Description
Technical Field
The invention relates to the technical field of a flexible energy dissipation protective net structure, in particular to a collapsed rockfall protective net structure with a flexible energy dissipation function and an installation method.
Background
The existing protective net is often directly fixed on a strut, when the strut is vertically fixed in a fixed foundation, the strut does not have a toughness energy dissipation function and cannot face the impact of collapsed falling rocks in a flexible manner; when the supporting column is hinged in the fixed foundation, the supporting column needs to be further supported by using anchor ropes, and the buffer devices are arranged on the anchor ropes, so that the energy dissipation of the collapsed falling rocks can be performed to a certain extent, but the energy dissipation is performed only by the buffer devices on the anchor ropes, the effect is general, and after the collapsed falling rocks are impacted, the weight of the falling rocks also partially acts on the protective net, so that the falling rocks are easy to continuously deform.
Therefore, it is necessary to provide a structure of a rockfall protection net with toughness and energy dissipation function and a method for installing the same to solve the above problems.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a collapse rockfall protection network structure that possesses toughness energy dissipation function, includes:
the supporting columns are arranged in a plurality of numbers, and the supporting columns are arranged at intervals along a slope supporting track;
fences which are configured into a plurality of fences arranged at intervals along the length direction of the strut, and each fence extends along the interval arrangement direction of the strut;
a bumper means for connecting said fence to said post; and
the steel wire mesh is fixedly arranged on the fence;
the buffer devices can perform telescopic buffering, and the telescopic buffering strength of the buffer devices is configured to drive the steel wire mesh to approach to and keep a vertical state after rockfall is prevented.
Further, preferably, the pillars are vertically anchored in a fixed foundation;
and the telescopic buffer strength of each buffer device is kept consistent.
Preferably, the bottom of the pillar is obliquely hinged in the fixed foundation, and an anchor rope is fixed at the top of the pillar and anchored in the slope;
and from top to bottom, the telescopic buffer strength of each buffer device is gradually increased.
Further, preferably, the buffer device includes:
the mounting cylinder is hinged on the support column by adopting a hinge seat;
the connecting seat is hinged on the fence by a hinge seat; and
one end of the connecting rod is connected with the connecting seat, and the other end of the connecting rod is connected with the first energy consumption plug;
a return spring is also arranged between the connecting seat and the mounting cylinder;
the first energy dissipation plug is positioned inside the mounting cylinder, and the connecting rod is connected with the mounting cylinder in a sealing and sliding manner;
the mounting cylinder is filled with a first shear thickening agent.
Preferably, a second energy consumption plug is further sleeved outside the first energy consumption plug, and a through hole is formed in the second energy consumption plug.
Preferably, the outer peripheral surface of the second energy consumption plug is in contact with the inner wall of the installation cylinder, and a resistance increasing pad is embedded in the inner wall of the installation cylinder.
Preferably, the first energy consumption plug is of a cylindrical structure, a third energy consumption plug is arranged in the first energy consumption plug in a sliding mode, the third energy consumption plug is fixed on the inner wall of one side of the installation cylinder through a support rod, the support rod is connected with the first energy consumption plug in a sealing and sliding mode, a through hole is formed in the third energy consumption plug, and a second shear thickening agent is filled in the first energy consumption plug.
Further, preferably, the cross section of the third energy consumption plug is in a circular truncated cone shape;
an inner ring corresponding to the third dissipative plug is embedded in the inner wall of the first dissipative plug;
the support rod is connected to one side, far away from the inner ring, of the third energy dissipation plug.
Further, preferably, the third energy consumption plug is provided with a limit groove, and a limit head corresponding to the limit groove is fixed in the inner wall of the first energy consumption plug;
when the supporting columns are vertically anchored in a fixed foundation, the length of the limiting heads in each buffering device is kept consistent;
and when the supporting columns are obliquely hinged in the fixed foundation, the length of the limiting heads in each buffer device is gradually shortened from top to bottom.
A method for installing a collapsed rockfall protection net structure with a toughness energy dissipation function comprises the following steps:
s1, constructing a fixed foundation: performing trenching and grouting along the direction of a slope supporting track, forming a fixed foundation after grout is solidified, and reserving an anchor hole into which an anchor rod is to be embedded in the fixed foundation;
s2, arranging a plurality of mounting seats along the direction of a fixed foundation, and anchoring the mounting seats in the fixed foundation by using anchor rods, wherein the anchor rods are grouting anchor rods, the anchor rods penetrate through reserved anchor holes of the fixed foundation and then continuously extend into 30cm, and then grouting and anchoring are performed;
s3, correspondingly placing a plurality of pillars on one side of the mounting seat, fixing the bottoms of the pillars on the mounting seat or hinging the bottoms of the pillars on the mounting seat, and when the bottoms of the pillars are hinged with the mounting seat, connecting anchor ropes to the tops of the pillars, and anchoring the other ends of the anchor ropes in the side slope to enable the pillars to slightly incline;
s4, a plurality of fences are arranged at intervals along the length direction of the strut, each fence extends along the interval arrangement direction of the strut, a buffer device is selectively arranged at the position of the intersection of the fence and the strut, at the moment, the fence is hinged at one end of the buffer device by using a hinged seat, and the other end of the buffer device is hinged on the strut by using another hinged seat;
and S5, paving a steel wire mesh on the fence.
Compared with the prior art, the invention provides a collapse rockfall protection net structure with toughness energy dissipation function and an installation method thereof, and the collapse rockfall protection net structure has the following beneficial effects:
in the embodiment of the invention, a large number of buffer devices are arranged between the fence and the pillar, so that the buffer devices can be used for energy consumption protection in a flexible mode, the overall damage degree is reduced, the later maintenance workload is reduced, in addition, the telescopic buffer strength of the buffer devices is configured to be capable of driving the steel wire mesh to be in a vertical state after rockfall is prevented, and the damage degree of the steel wire mesh can be reduced to the maximum extent.
Drawings
FIG. 1 is a schematic view of the overall structure of a collapsed rockfall protection net structure with a toughness energy dissipation function;
FIG. 2 is a first side view of a structure of a collapsed rockfall protection net with a ductile energy dissipation function;
fig. 3 is a second side view structural schematic diagram of a collapse rockfall protection net structure with toughness and energy dissipation functions;
FIG. 4 is a schematic third side view of a collapsed rock fall protection net structure with a flexible energy dissipation function;
FIG. 5 is a schematic structural view of a buffering device in a collapsed rock protective net structure with a flexible energy dissipation function;
in the figure: 1. a pillar; 2. a fence; 3. a buffer device; 4. steel wire mesh; 31. mounting the cylinder; 32. a first dissipative plug; 33. a second dissipative plug; 34. a connecting rod; 35. a connecting seat; 36. a return spring; 37. a resistance increasing pad; 38. a third energy consuming plug; 39. a support bar; 310. an inner ring; 311. a limiting head.
Detailed Description
Referring to fig. 1 to 5, the present invention provides a collapsed rock protective net structure with a toughness energy dissipation function, including:
the supporting columns 1 are arranged in a plurality, and the supporting columns 1 are arranged at intervals along a slope supporting track;
a damping device 3 for connecting the fence 2 to the post 1; and
the steel wire mesh 4 is fixedly arranged on the fence 2;
the buffer devices 3 can perform telescopic buffering, and the telescopic buffering strength of the buffer devices 3 is configured to drive the steel wire mesh 4 to approach and keep a vertical state after rockfall is prevented.
Specifically, as shown in fig. 2, the supporting column 1 is vertically anchored in a fixed foundation;
and the stretching and contracting buffering strength of each buffering device 3 is kept consistent, so that the steel wire mesh 4 is kept in a vertical state.
It should be explained that, in the prior art, the pillar 1 is usually vertically anchored in the fixed foundation, and the steel wire mesh is directly fixed on the pillar 1 or fixed on the pillar 1 by using the rail 2, so that the steel wire mesh can only perform rigid protection, and consumes energy at the cost of deformation of the steel wire mesh itself, which also results in a large amount of post-maintenance workload, in this embodiment, a large number of buffer devices 3 are arranged between the rail 2 and the pillar 1, which is beneficial to performing energy consumption protection in a flexible manner by using the buffer devices 3, thereby reducing the overall damage degree and reducing the post-maintenance workload.
In another embodiment, as shown in fig. 3 and 4, the bottom of the supporting pillar 1 is obliquely hinged in the fixed foundation, and the top of the supporting pillar 1 is fixed with an anchor rope which is anchored in a side slope;
and from top to bottom, the telescopic buffer strength of each buffer device 3 is gradually increased, so that the steel wire mesh 4 approaches to keep a vertical state.
It should be explained that, when the bottom slope of pillar 1 articulates in fixed basis, mainly rely on the hawser to carry on spacingly this moment pillar 1, in the prior art, often set up power consumption mechanism on the hawser and consume energy, consequently when protecting the collapse rock fall, pillar 1 can be more inclined, consequently after the protection, the partial weight of rock fall then can fall on the wire net, lead to the wire net to continue to suffer to destroy and take place the deformation, and in this embodiment, lay a large amount of buffer 3 between rail 2 and pillar 1, be favorable to utilizing buffer 3 to carry out power consumption protection with flexible mode, the holistic damage degree has been reduced, and top-down, the flexible buffer strength of each buffer 3 increases gradually, make wire net 4 approach to and keep vertical state, can reduce the destroyed degree of wire net by at utmost.
In this embodiment, the buffer device 3 includes:
the mounting cylinder 31 is hinged to the support column 1 by a hinge seat;
a connecting seat 35 hinged to the rail 2 by a hinge seat; and
at least one connecting rod 34 having one end connected to the connecting seat 35 and the other end connected to the first damper plug 32;
a return spring 36 is also arranged between the connecting seat 35 and the mounting cylinder 31;
the first energy consumption plug 32 is positioned inside the installation barrel 31, and the connecting rod 34 is connected with the installation barrel 31 in a sealing and sliding way;
the first shear thickening agent is filled in the mounting cylinder 31, the shear thickening agent has a shear thickening effect, the viscosity of the shear thickening agent is increased along with the increase of the shear rate when the mounting cylinder is used, so that high-efficiency energy absorption is realized, and the shear thickening agent can recover automatically after external force disappears.
In this embodiment, a second dissipative plug 33 is further sleeved outside the first dissipative plug 32, and a through hole is formed in the second dissipative plug 33, so that the first dissipative plug and the second dissipative plug can be used for synchronous dissipation.
In a preferred embodiment, the outer circumferential surface of the second energy consumption plug 33 contacts the inner wall of the installation cylinder 31, and a resistance increasing pad 37 is embedded in the inner wall of the installation cylinder 31, so that energy can be consumed by using the friction force between the second energy consumption plug and the resistance increasing pad 37.
In a preferred embodiment, the first dissipative plug 32 is a cylindrical structure, a third dissipative plug 38 is slidably disposed inside the first dissipative plug 32, the third dissipative plug 38 is fixed on an inner wall of one side of the mounting cylinder 31 by a support rod 39, the support rod 39 is connected with the first dissipative plug 32 in a sealing and sliding manner, a through hole is formed in the third dissipative plug 38, and a second shear thickening agent is filled inside the first dissipative plug 32.
In a preferred embodiment, the cross section of the third energy dissipating plug 38 is circular truncated cone;
an inner ring 310 corresponding to the third dissipative plug 38 is also embedded in the inner wall of the first dissipative plug 32;
the support rod 39 is connected to a side of the third energy consumption plug 38 away from the inner ring 310, that is, the third energy consumption plug is further arranged in the first energy consumption plug, the third energy consumption plug is matched with the second shear thickening agent to consume energy, and the cross section of the third energy consumption plug 38 is in a circular truncated cone shape; the inner wall of the first dissipative plug 32 is embedded with an inner ring 310 corresponding to the third dissipative plug 38, so that the friction between the third dissipative plug and the inner ring 310 can be utilized for dissipating energy, and the wedge-shaped engagement between the third dissipative plug and the inner ring is beneficial to gradually increasing the friction between the third dissipative plug and the inner ring.
In this embodiment, a limiting groove is formed on the third energy consumption plug 38, and a limiting head 311 corresponding to the limiting groove is fixed in the inner wall of the first energy consumption plug 32;
when the strut 1 is vertically anchored in a fixed foundation, the length of the limiting head 311 in each buffer device 3 is kept consistent;
and, when the supporting column 1 is obliquely hinged in the fixed foundation, the length of the limiting head 311 in each buffer device 3 is gradually shortened from top to bottom.
A mounting method of a collapsed rockfall protection net structure with a toughness energy dissipation function is characterized in that: which comprises the following steps:
s1, constructing a fixed foundation: performing trenching and grouting along the direction of a slope supporting track, forming a fixed foundation after grout is solidified, and reserving an anchor hole into which an anchor rod is to be embedded in the fixed foundation;
s2, arranging a plurality of mounting seats along the direction of a fixed foundation, and anchoring the mounting seats in the fixed foundation by using anchor rods, wherein the anchor rods are grouting anchor rods, the anchor rods penetrate through reserved anchor holes of the fixed foundation and then continuously extend into 30cm, and then grouting and anchoring are performed;
s3, correspondingly placing a plurality of pillars 1 on one side of the mounting seat, fixing the bottoms of the pillars 1 on the mounting seat or hinging the bottoms of the pillars 1 on the mounting seat, wherein when the bottoms of the pillars 1 are hinged with the mounting seat, the top of each pillar 1 is also connected with an anchor rope, and the other end of each anchor rope is anchored in a side slope, so that the pillars 1 slightly incline;
s4, a plurality of fences 2 are arranged at intervals along the length direction of the strut 1, each fence 2 extends along the interval arrangement direction of the strut 1, a buffer device 3 is selectively arranged at the position of the intersection of the fence 2 and the strut 1, at the moment, the fence 2 is hinged at one end of the buffer device 3 by using a hinge seat, and the other end of the buffer device 3 is hinged on the strut 1 by using another hinge seat;
and S5, paving a steel wire mesh 4 on the fence 2.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (6)
1. The utility model provides a collapse rockfall protective net structure that possesses toughness energy dissipation function which characterized in that: the method comprises the following steps:
the supporting column (1) is configured to be multiple, and the multiple supporting columns (1) are arranged at intervals along a side slope supporting track;
the fences (2) are configured to be arranged in a plurality at intervals along the length direction of the strut (1), and each fence (2) extends along the interval arrangement direction of the strut (1);
-damping means (3) for connecting said fence (2) to said post (1); and
the steel wire mesh (4) is fixedly arranged on the fence (2);
the buffer devices (3) can perform telescopic buffering, and the telescopic buffering strength of the buffer devices (3) is configured to drive the steel wire mesh (4) to approach to and keep a vertical state after rockfall is prevented;
the damping device (3) comprises:
the mounting cylinder (31) is hinged to the support column (1) by a hinge seat;
the connecting seat (35) is hinged on the fence (2) by a hinge seat; and
at least one connecting rod (34) having one end connected to the connecting seat (35) and the other end connected to the first energy consumption plug (32);
a return spring (36) is also arranged between the connecting seat (35) and the mounting cylinder (31);
the first energy dissipation plug (32) is positioned inside the mounting cylinder (31), and the connecting rod (34) is connected with the mounting cylinder (31) in a sealing and sliding manner;
a first shear thickening agent is filled in the mounting cylinder (31);
a second energy consumption plug (33) is sleeved outside the first energy consumption plug (32), and a through hole is formed in the second energy consumption plug (33);
the outer peripheral surface of the second energy consumption plug (33) is in contact with the inner wall of the mounting cylinder (31), and a resistance increasing pad (37) is embedded in the inner wall of the mounting cylinder (31);
the first energy dissipation plug (32) is of a cylindrical structure, a third energy dissipation plug (38) is arranged in the first energy dissipation plug in a sliding mode, the third energy dissipation plug (38) is fixed on the inner wall of one side of the installation barrel (31) through a support rod (39), the support rod (39) is connected with the first energy dissipation plug (32) in a sealing sliding mode, a through hole is formed in the third energy dissipation plug (38), and a second shear thickening agent is filled in the first energy dissipation plug (32).
2. The structure of the collapsed rockfall protection net with toughness and energy dissipation function as claimed in claim 1, wherein: the strut (1) is vertically anchored in a fixed foundation;
and the stretching and contracting buffer strength of each buffer device (3) is kept consistent.
3. The collapse rockfall protection net structure with toughness energy dissipation function according to claim 1, wherein: the bottom of the pillar (1) is obliquely hinged in the fixed foundation, an anchor rope is fixed to the top of the pillar (1), and the anchor rope is anchored in the slope;
moreover, the stretching buffer strength of each buffer device (3) is gradually increased from top to bottom.
4. The structure of the collapsed rockfall protection net with toughness and energy dissipation function as claimed in claim 1, wherein: the cross section of the third energy consumption plug (38) is in a circular truncated cone shape;
an inner ring (310) corresponding to the third dissipative plug (38) is also embedded in the inner wall of the first dissipative plug (32);
the supporting rod (39) is connected to one side, far away from the inner ring (310), of the third energy consumption plug (38).
5. The structure of the collapsed rockfall protection net with toughness and energy dissipation function as claimed in claim 4, wherein: a limiting groove is formed in the third energy consumption plug (38), and a limiting head (311) corresponding to the limiting groove is fixed in the inner wall of the first energy consumption plug (32);
when the strut (1) is vertically anchored in a fixed foundation, the length of the limiting head (311) in each buffer device (3) is kept consistent;
and when the supporting columns (1) are obliquely hinged in the fixed foundation, the length of the limiting heads (311) in each buffer device (3) is gradually shortened from top to bottom.
6. A method for installing a collapsed rockfall protection net structure with toughness energy dissipation function according to any one of claims 1 to 5, wherein: which comprises the following steps:
s1, constructing a fixed foundation: performing grooving grouting along the direction of a slope supporting track, forming a fixed foundation after grout is solidified, and reserving an anchor hole in the fixed foundation for embedding an anchor rod;
s2, arranging a plurality of mounting seats along the direction of a fixed foundation, and anchoring the mounting seats in the fixed foundation by adopting an anchor rod, wherein the anchor rod is a grouting anchor rod, the anchor rod continuously extends into the fixed foundation for 30cm after penetrating through a reserved anchor hole of the fixed foundation, and then grouting and anchoring are carried out;
s3, correspondingly placing a plurality of pillars (1) on one side of an installation seat, fixing the bottoms of the pillars (1) on the installation seat or hinging the pillars to the installation seat, and when the bottoms of the pillars (1) are hinged to the installation seat, connecting anchor ropes to the tops of the pillars (1), and anchoring the other ends of the anchor ropes in a side slope to enable the pillars (1) to slightly incline;
s4, a plurality of fences (2) are arranged at intervals along the length direction of the support column (1), each fence (2) extends along the interval arrangement direction of the support column (1), a buffer device (3) is selectively arranged at the position of the intersection of the fence (2) and the support column (1), at the moment, the fence (2) is hinged to one end of the buffer device (3) through a hinged seat, and the other end of the buffer device (3) is hinged to the support column (1) through another hinged seat;
and S5, paving a steel wire mesh (4) on the fence (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111162761.3A CN113756217B (en) | 2021-09-30 | 2021-09-30 | Collapse falling stone protection net structure with toughness energy dissipation function and installation method |
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| CN202111162761.3A CN113756217B (en) | 2021-09-30 | 2021-09-30 | Collapse falling stone protection net structure with toughness energy dissipation function and installation method |
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| CN113756217B true CN113756217B (en) | 2023-02-07 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115012682B (en) * | 2022-06-20 | 2023-04-25 | 中国科学院、水利部成都山地灾害与环境研究所 | Collapse falling stone protective net structure with toughness energy dissipation function |
| CN115323947B (en) * | 2022-07-27 | 2023-06-20 | 中铁二院工程集团有限责任公司 | Linkage type large-energy-level stone blocking structure and construction method thereof |
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| KR20110130077A (en) * | 2010-05-27 | 2011-12-05 | 관동대학교산학협력단 | Rockfall protection fence for distributing and absorbing impect energy |
| EP2725139A1 (en) * | 2012-10-23 | 2014-04-30 | Geostahl AG | Protection fence for protecting against rock fall |
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