CN112832260B - Cutting slope reinforced passive protection system and construction method thereof - Google Patents
Cutting slope reinforced passive protection system and construction method thereof Download PDFInfo
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- CN112832260B CN112832260B CN202011639431.4A CN202011639431A CN112832260B CN 112832260 B CN112832260 B CN 112832260B CN 202011639431 A CN202011639431 A CN 202011639431A CN 112832260 B CN112832260 B CN 112832260B
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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
- 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
Abstract
The utility model relates to a cutting slope reinforced passive protection system and a construction method thereof, relating to the technical field of road construction, wherein the cutting slope reinforced passive protection system comprises retaining walls, upright columns, a reinforcing mesh and an energy storage mechanism for tensioning the reinforcing mesh, one retaining wall is correspondingly provided with two upright columns, the two upright columns are respectively arranged at the two ends of the retaining wall in the length direction, the two ends of the reinforcing mesh in the length direction are respectively arranged on the two upright columns, a gap is formed between the reinforcing mesh and the retaining wall, the reinforcing mesh can relatively move with the upright columns, and the energy storage mechanism is connected with the reinforcing mesh; the construction method comprises the following steps of S01: pre-pouring a retaining wall; s02: pouring the upright post; s03: clamping the retaining wall on the upright post; s04: and connecting the reinforcing mesh with the energy storage mechanism. This application can reduce the falling rocks and pile up the probability in reinforcing bar net department, and then has reduced the probability that the falling rocks oppressed the reinforcing bar net, makes the reinforcing bar net maintain elasticity throughout, and the reinforcing bar net absorbs the effect that the kinetic energy of falling rocks when having improved long-term use.
Description
Technical Field
The application relates to the field of road construction, in particular to a cutting slope reinforced passive protection system and a construction method thereof.
Background
In the field of road construction, an excavated subgrade lower than the original ground is called a cut, and is a subgrade form excavated downward from the original ground. It can play the role of easing the longitudinal slope of the road or controlling elevation by crossing the ridge through the ridge line. Because the cutting is less than former ground for one side or both sides on road surface are formed with the side slope, roll the rubble on the side slope easily to the road surface, consequently need set up the protection system who is used for blockking the rockfall between side slope and road surface.
At present, China patent application with publication number CN111549804A, whose publication number is 08/18/2020, provides a cutting slope reinforced passive protection system and a construction method, wherein the cutting slope reinforced passive protection system comprises a cutting wall, a reinforced gabion retaining wall and a passive protective net, the cutting wall is arranged at the toe of the cutting slope, and the reinforced gabion retaining wall is arranged at the top of the cutting wall; the reinforced gabion retaining wall is composed of a plurality of reinforced gabions, and adjacent reinforced gabions are connected through a folded steel wire rope and a buckle. Among the above-mentioned scheme, fall on the reinforcing bar gabion after, use the toughness of reinforcing bar in the reinforcing bar gabion to absorb the impact force of falling rocks, and then reduce the destruction of falling rocks to cutting wall.
In view of the above-mentioned related art, the inventor believes that when falling rocks are accumulated near the retaining wall of the reinforcement cage, the falling rocks press the reinforcement bars on the retaining wall of the reinforcement cage, so that the amount of deformation of the reinforcement bars is reduced, and the effect of absorbing the impact force of the falling rocks by the reinforcement bars is weakened.
Disclosure of Invention
In order to improve the protection effect when the protection system continuously absorbs the rockfall impact force, the application provides a cutting slope reinforced passive protection system and a construction method thereof.
First aspect, this application provides a cutting slope strenghthened type passive protection system, adopts following technical scheme:
the utility model provides a cutting side slope strenghthened type passive protection system, include barricade, stand, reinforcing bar net and be used for with the taut energy storage mechanism of reinforcing bar net, one the barricade corresponds and sets up two the stand, two the stand sets up respectively the both ends of barricade length direction, reinforcing bar net length direction's both ends set up respectively two on the stand, just the reinforcing bar net with form the clearance between the barricade, the reinforcing bar net can with relative movement takes place for the stand, energy storage mechanism with the reinforcing bar net is connected.
By adopting the technical scheme, the energy storage mechanism always tensions the reinforcing mesh, when falling rocks fall on the reinforcing mesh, the reinforcing mesh deforms, and the reinforcing mesh and the upright post move relatively, so that the impact force of the falling rocks is absorbed; after the kinetic energy of falling rocks is absorbed by the reinforcing mesh, the energy storage mechanism drives the reinforcing mesh to reset, and the falling rocks are flicked by the reinforcing mesh at the moment, so that the probability of the falling rocks accumulating at the reinforcing mesh is reduced, the probability of the falling rocks pressing the reinforcing mesh is further reduced, the reinforcing mesh is always kept elastic, and the effect of absorbing the kinetic energy of the falling rocks by the reinforcing mesh when the reinforcing mesh is used for a long time is improved; if the impact force of falling rocks is large, the reinforcing mesh can be in contact with the retaining wall, so that the retaining wall absorbs the kinetic energy of the falling rocks, and the retaining wall is not easily damaged by the falling rocks and is protected because part of the kinetic energy of the falling rocks is consumed when the reinforcing mesh deforms.
Optionally, the energy storage mechanism includes a steel cable and a gravity piece, the steel cable is connected to one end of the steel mesh in the length direction, the other end of the steel cable penetrates through the upright post and then is connected to the gravity piece, and when the gravity piece naturally droops, the steel mesh is tensioned.
By adopting the technical scheme, when the gravity piece naturally droops, the reinforcing mesh is tensioned; when falling rocks fall on the steel bar mesh, the steel bar mesh deforms and slides towards the retaining wall, at the moment, the gravity piece is pulled up through the transmission of the steel cable, and the kinetic energy of the falling rocks is converted into the gravitational potential energy of the gravity piece; after the kinetic energy of falling rocks is completely absorbed, the gravity piece converts the gravitational potential energy of the gravity piece into the kinetic energy of the reinforcing mesh, and then the falling rocks are bounced off from the reinforcing mesh, so that the probability of the falling rocks accumulated at the reinforcing mesh is reduced, the elasticity of the reinforcing mesh is maintained, and the effect of absorbing the kinetic energy of the falling rocks by the reinforcing mesh in long-time use is improved.
Optionally, the energy storage mechanism further comprises a pulley block, the pulley block is arranged on the upright post, and the steel cable is sleeved on the pulley block.
By adopting the technical scheme, the pulley block can reduce the friction force between the steel cable and the upright column, so that the steel bar mesh deforms more rapidly, and the probability of damaging the steel bar mesh by falling rocks is reduced; meanwhile, the pulley block slows down the abrasion rate of the steel cable and prolongs the service life of the energy storage structure; the maintenance frequency of the reinforcing mesh and the energy storage mechanism is reduced on the whole, and the maintenance cost is reduced.
Optionally, the reinforcing mesh and the steel cable are connected through a turn buckle.
Through adopting above-mentioned technical scheme, at the reinforcing bar net damaged back, can pull down reinforcing bar net from the cable wire through dismantling basket flower bolt, later install new reinforcing bar net on the cable wire through basket flower bolt, shortened the required time of change reinforcing bar net, reduced the probability that maintainer was injures by falling the stone when changing the reinforcing bar net.
Optionally, a protection hole is formed in the upright column, and the turn buckle is arranged in the protection hole in a penetrating manner.
Through adopting above-mentioned technical scheme, when operating condition, the basket of flowers bolt receives the protection in protection hole, has reduced the probability that basket of flowers bolt was corroded by sleet, has improved basket of flowers bolt's intensity and life, and the operating personnel of being convenient for dismantles basket of flowers bolt.
Optionally, the diameter of the protection hole near the end of the mesh reinforcement is larger than the diameter of the protection hole far from the end of the mesh reinforcement.
By adopting the technical scheme, when the reinforcing mesh deforms, the turn buckle can deflect in the protection hole, so that the probability that the turn buckle is blocked in the protection hole is reduced; and in rainy and snowy weather, rainwater is not easy to accumulate in the protective holes, and the probability of corrosion of the turn buckle is further reduced.
Optionally, the gravity piece is arranged on one side of the retaining wall far away from the reinforcing mesh.
When changing the reinforcing bar net, need lift the gravity piece earlier to take out the turn buckle from the guard hole, through adopting above-mentioned technical scheme, when lifting the gravity piece, maintainer receives the protection of barricade, and then is difficult for being hit by falling rocks and hurts, has improved the security.
Optionally, a rock fall groove for storing rock fall is formed in the ground, and the rock fall groove is formed below the reinforcing mesh.
Through adopting above-mentioned technical scheme, the falling rocks that are flicked by the reinforcing bar net fall into the falling rocks groove under the effect of gravity, have reduced the probability that the falling rocks are piled up in the reinforcing bar net bottom, have maintained the elasticity of reinforcing bar net, have improved the effect that the reinforcing bar net absorbed falling rocks kinetic energy when using for a long time.
In a second aspect, the present application provides a construction method, including the following technical solutions:
a construction method comprising:
s01: pre-pouring a retaining wall;
s02: pouring the upright post;
s03: clamping the retaining wall on the upright post;
s04: and connecting the reinforcing mesh with the energy storage mechanism.
By adopting the technical scheme, the retaining wall is precast and molded, and then the retaining wall is inserted between the two adjacent upright columns, so that the time required by a shear force protection system is shortened, and the safety is improved; after the retaining wall is built, the protection system has preliminary rockfall prevention capacity, and when the energy storage mechanism is installed, constructors can perform preprocessing on one side, far away from the reinforcing mesh, of the retaining wall, so that construction safety is improved.
Optionally, in S02, a reserved hole through which the energy storage mechanism passes is reserved when the pillar is poured.
By adopting the technical scheme, the reserved hole is reserved during pouring, so that construction is not required after the upright post is formed, the time required for building a protection system is shortened, and the safety is improved; meanwhile, the integrity of the stand column is improved, and the strength of the stand column is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the arrangement of the energy storage mechanism, after the kinetic energy of falling rocks is absorbed by the reinforcing mesh, the energy storage mechanism drives the reinforcing mesh to reset, so that the falling rocks are bounced off by the reinforcing mesh, the probability that the falling rocks are accumulated at the reinforcing mesh to press the reinforcing mesh is reduced, the elasticity of the reinforcing mesh is always maintained, and the effect of absorbing the kinetic energy of falling rocks by the reinforcing mesh during long-time use is improved.
2. Through the arrangement of the pulley block, the friction force between the steel cable and the upright post is reduced, so that the steel bar mesh deforms more quickly, the probability of damaging the steel bar mesh by falling rocks is reduced, the abrasion rate of the steel cable is slowed down, and the service life of the steel cable is prolonged; the maintenance frequency of the reinforcing mesh and the energy storage mechanism is reduced integrally, and the maintenance cost is reduced.
3. Through the arrangement of the turn buckle, the time for replacing the reinforcing steel bar net is shortened, and the probability of injury caused by falling rocks when the reinforcing steel bar net is replaced by maintenance personnel is reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of an embodiment of the present application when installed on the ground;
FIG. 2 is a schematic diagram of the overall structure from one perspective of an embodiment of the present application;
FIG. 3 is a schematic diagram of the overall structure from another perspective in the embodiment of the present application;
fig. 4 is a partial structural view of the connection portion of the first wire rope and the mesh reinforcement.
Description of reference numerals: 100. a ground surface; 110. side slope; 120. a roadbed; 130. a rockfall groove; 210. retaining walls; 220. a column; 221. a card slot; 222. a placement groove; 223. a protective hole; 230. a reinforcing mesh; 231. a net body; 232. a transverse support bar; 233. a longitudinal support bar; 234. a collar; 235. positioning the bolt; 300. an energy storage mechanism; 310. a steel cord; 311. a first wire rope; 312. a second wire rope; 320. a weight member; 330. a connecting plate; 340. a pulley block; 341. a first fixed pulley; 342. a second fixed pulley; 343. a first protective case; 344. a second protective shell; 350. the turn buckle.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
First, this application embodiment discloses a cutting slope strenghthened type passive protection system. Referring to fig. 1, the cut slope reinforced passive protection system includes a retaining wall 210 for blocking falling rocks, a vertical column 220 for supporting the retaining wall 210, a mesh reinforcement 230 for absorbing kinetic energy of the falling rocks, and an energy storage mechanism 300 for tensioning the mesh reinforcement 230.
Referring to fig. 1 and 2, a roadbed 120 is formed at the lowest part of a ground 100, a side slope 110 is formed at one side or both sides of the roadbed 120, columns 220 are arranged on the ground 100 and between the roadbed 120 and the side slope 110, and the columns 220 are uniformly distributed along the length direction of the roadbed 120. The cross-section of the upright column 220 is square, the upright column 220 is provided with vertically arranged clamping grooves 221 on two end faces in the length direction of the roadbed 120, the retaining wall 210 is arranged between the two upright columns 220, and two ends of the retaining wall 210 in the length direction of the roadbed 120 are respectively inserted into the corresponding clamping grooves 221 of the two adjacent upright columns 220. The mesh reinforcement 230 is disposed on the side of the retaining wall 210 close to the side slope 110, and the mesh reinforcement 230 is disposed parallel to the retaining wall 210, and the length direction of the mesh reinforcement 230 is aligned with the length direction of the roadbed 120.
Referring to fig. 1 and 3, a placement groove 222 for placing an energy storage assembly is formed on one end surface of the column 220 close to the roadbed 120, and the placement groove 222 is vertically arranged. The energy storage assembly comprises a gravity piece 320 and a steel cable 310 connecting the gravity piece 320 and the steel mesh reinforcement 230, wherein the gravity piece 320 is a basket, and the gravity piece 320 is placed in the placement groove 222.
Referring to fig. 3 and 4, the mesh reinforcement 230 includes two transverse support rods 232, two longitudinal support rods 233 and a mesh body 231, the two transverse support rods 232 are respectively disposed at the upper and lower ends of the mesh body 231, the two longitudinal support rods 233 are respectively disposed at the two ends of the mesh body 231 in the length direction, and the transverse support rods 232, the longitudinal support rods 233 and the mesh body 231 are welded to each other. Each longitudinal support bar 233 is sleeved with a plurality of collars 234, and the collars 234 are slidably connected with the longitudinal support bars 233 along the length direction of the longitudinal support bars 233. A positioning bolt 235 is screwed in the axial direction of the collar 234, and one end of the positioning bolt 235, which is far away from the bolt head of the positioning bolt, passes through the collar 234 and abuts against the longitudinal support rod 233.
Referring to fig. 3 and 4, the cable 310 includes a first cable 311 and a second cable 312, one first cable 311 corresponds to one collar 234, and the first cable 311 and the collar 234 are connected by a turn buckle 350. One end of the turn bolt 350 is welded to the outer circumferential surface of the collar 234, and the other end of the turn bolt 350 is welded to the first wire rope 311. The upright column 220 is provided with a protection hole 223 for the turn buckle 350 to pass through, the axis of the protection hole 223 is horizontally arranged, and one end of the turn buckle 350 far away from the lantern ring 234 penetrates into the protection hole 223 and then is connected with the steel cable 310. The end of the first steel cable 311 far away from the collar 234 is welded with a connecting plate 330, the connecting plates 330 are arranged in the placing groove 222, one connecting plate 330 corresponds to one longitudinal support bar 233, and a plurality of collars 234 and the first steel cable 311 are arranged between the connecting plate 330 and the longitudinal support bar 233.
Referring to fig. 3 and 4, the second cable 312 is welded to an end surface of the support plate away from the first cable 311, and the second cable 312 is welded to a middle portion of the support plate. One end of the second cable 312, which is far away from the support plate, is welded to the gravity member 320.
Referring to fig. 3 and 4, the upright column 220 is further provided with a pulley block 340, the sliding shaft includes a first fixed pulley 341 and a second fixed pulley 342, and both the first fixed pulley 341 and the second fixed pulley 342 are rotatably connected to the upright column 220. The first fixed pulleys 341 are provided in plurality, one first fixed pulley 341 corresponds to one first steel cable 311, the first steel cable 311 is sleeved on the outer peripheral surface of the first fixed pulley 341, and the axis of the first fixed pulley 341 is vertically arranged. The second cable 312 is sleeved on the second fixed pulley 342, and the axis of the second fixed pulley 342 is horizontally disposed.
When the system is used, a heavy object is firstly loaded into the object containing basket, and the heavy object can be a stone block so as to be convenient to take. When the basket is used to contain stones, the mesh reinforcement 230 is stretched under the gravity of the stones. When falling rocks fall on the reinforcing mesh 230, the reinforcing mesh 230 moves and deforms toward the retaining wall 210, and the basket slides upward under the pulling action of the steel cables 310, so that the kinetic energy of the falling rocks is converted into the gravitational potential energy of the rocks in the basket. When the kinetic energy of the falling rocks is completely converted, the basket moves downward under the action of the rocks to drive the mesh reinforcement 230 to reposition, and at this time, the mesh reinforcement 230 pushes the falling rocks to the side far away from the retaining wall 210. Thus, when falling rocks fall on the ground 100, the falling rocks are not easily accumulated near the mesh reinforcement 230 to press the mesh reinforcement 230, so that the mesh reinforcement 230 maintains elasticity all the time, thereby improving the effect of absorbing kinetic energy of falling rocks by the mesh reinforcement 230 during long-term use.
When the kinetic energy of falling rocks is large, the reinforcing mesh 230 can be completely moved to be attached to the retaining wall 210, and the retaining wall 210 absorbs the remaining kinetic energy of falling rocks. Because the reinforcing mesh 230 absorbs part of the kinetic energy of the falling rocks, the retaining wall 210 is not easily damaged by the falling rocks, and the reinforcing mesh 230 does not need to completely absorb the kinetic energy of the falling rocks, so that the probability of damage of the reinforcing mesh 230 is reduced, the retaining wall 210 and the reinforcing mesh 230 are mutually protected, and the probability of failure of the protection system is reduced.
Because the loop 234 is arranged between the longitudinal support bar 233 and the first steel cable 311, the loop 234 can be adjusted on the longitudinal support bar 233 according to the position of the first fixed pulley 341, so that the plurality of turn bolts 350 are kept parallel, the stress on the longitudinal support bar 233 is balanced, and the probability that the mesh reinforcement 230 is damaged by falling rocks is reduced. Moreover, as the first steel cable 311 is connected with the longitudinal support bar 233 by the turn buckle 350, after the steel mesh 230 is damaged, the maintenance personnel can quickly disassemble and assemble the steel mesh 230, thereby shortening the time period of the maintenance personnel exposed in the dangerous area and further improving the safety. As the turn buckle 350 is arranged in the protection hole 223 in a penetrating manner, the turn buckle 350 is not easy to be eroded by rain and snow in rainy and snowy weather, the reliability of the turn buckle 350 is improved, and then maintenance personnel can conveniently detach the turn buckle 350.
Due to the arrangement of the placement groove 222, the gravity piece 320 is arranged on the side of the retaining wall 210 away from the mesh reinforcement 230, and when a maintenance worker or a construction worker installs the mesh reinforcement 230, the operator can construct on the side of the retaining wall 210 away from the mesh reinforcement 230, so that the operator is protected by the retaining wall 210, and the safety is improved.
Referring to fig. 2 and 3, the diameter of the protection hole 223 near the end of the mesh reinforcement 230 is larger than the diameter of the protection hole far from the end of the mesh reinforcement 230. Therefore, when the steel mesh 230 deforms, the turn buckle 350 can slide in the protection hole 223, and meanwhile, the turn buckle 350 can deflect in the protection hole 223, so that the probability that the turn buckle 350 is locked in the protection hole 223 is reduced, and the reliability of the steel mesh 230 in absorbing the falling stone kinetic energy is improved. And the lower terminal line of protection hole 223 is the slope setting for difficult water of depositing in the protection hole 223, further reduced the probability that basket of flowers bolt 350 was corroded by sleet, protected basket of flowers bolt 350.
Referring to fig. 3, a first protective case 343 is provided around the first fixed pulley 341, a second protective case 344 is provided around the second fixed pulley 342, the first wire rope 311 is disposed between the first protective case 343 and the first fixed pulley 341, and the second wire rope 312 is disposed between the second protective case 344 and the second fixed pulley 342. When falling rocks impact the reinforcing mesh 230, the kinetic energy of the falling rocks is also converted into the kinetic energy of the gravity piece 320, and when the kinetic energy of the falling rocks is reduced to zero, the gravity piece 320 may move upwards, and due to the arrangement of the first protective shell 343 and the second protective shell 344, the probability that the first steel cable 311 falls off from the first fixed pulley 341 and the probability that the second steel cable 312 falls off from the second fixed pulley 342 can be reduced, so that the stability of the energy storage mechanism 300 is improved, and meanwhile, the service lives of the first steel cable 311 and the second steel cable 312 are prolonged.
Referring to fig. 1 and 2, a rock-fall groove 130 for storing falling rocks may be further formed in the ground 100, and the rock-fall groove 130 is disposed below the mesh reinforcement 230. The falling rocks bounced off by the mesh reinforcement 230 fall into the falling rocks chute 130 under the action of gravity, thereby reducing the probability of the falling rocks accumulating at the bottom of the mesh reinforcement 230, maintaining the elasticity of the mesh reinforcement 230, and improving the effect of absorbing kinetic energy of the falling rocks by the mesh reinforcement 230 during long-term use.
Secondly, the embodiment of the application also provides a construction method, which comprises the following steps
S01: pre-pouring the retaining wall, and pre-forming the retaining wall according to the standard to form strength so as to facilitate subsequent use;
s02: pouring the upright post, namely pouring the upright post at a preset position according to a design scheme, reserving an embedded part for installing a first fixed pulley and a second fixed pulley and reserving an installation hole when pouring the upright post, and installing the first fixed pulley and the second fixed pulley on the upright post after the upright post is formed;
s03: the retaining wall is clamped on the upright post, and the prefabricated retaining wall is clamped on the upright post, so that the construction time is saved;
s04: welding one end of a first steel cable on the connecting plate, penetrating the other end of the first steel cable through the mounting hole, and then connecting the first steel cable with the reinforcing mesh through a turn buckle; and welding one end of a second steel cable on the connecting plate, welding the other end of the second steel cable on the gravity piece, sleeving the first steel cable and the second steel cable sleeve on the second fixed pulley and the second fixed pulley respectively, and finally installing the first protective shell and the second protective shell on the first fixed pulley and the second fixed pulley respectively.
The embodiment of the application discloses a cutting slope enhanced passive protection system and a construction method thereof, and the implementation principle is as follows:
when falling rocks fall on the reinforcing mesh 230, the reinforcing mesh 230 moves and deforms toward the retaining wall 210, and the basket slides upward under the pulling action of the steel cables 310, so that the kinetic energy of the falling rocks is converted into the gravitational potential energy of the rocks in the basket. When the kinetic energy of the falling rocks is completely converted, the basket moves downward under the action of the rocks, and further drives the mesh reinforcement 230 to reposition, and at this time, the mesh reinforcement 230 pushes the falling rocks to the side away from the retaining wall 210. Thus, when falling rocks fall on the ground 100, the falling rocks are not easily accumulated near the mesh reinforcement 230 to press the mesh reinforcement 230, so that the mesh reinforcement 230 maintains elasticity all the time, thereby improving the effect of absorbing kinetic energy of falling rocks by the mesh reinforcement 230 during long-term use.
When the kinetic energy of falling rocks is large, the reinforcing mesh 230 can be completely moved to be attached to the retaining wall 210, and the retaining wall 210 absorbs the remaining kinetic energy of falling rocks. Because the reinforcing mesh 230 absorbs part of the kinetic energy of the falling rocks, the retaining wall 210 is not easily damaged by the falling rocks, and the reinforcing mesh 230 does not need to completely absorb the kinetic energy of the falling rocks, so that the probability of damage of the reinforcing mesh 230 is reduced, the retaining wall 210 and the reinforcing mesh 230 are mutually protected, and the probability of failure of the protection system is reduced.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a cutting side slope strenghthened type passive protection system which characterized in that includes: the energy storage device comprises retaining walls (210), upright columns (220), reinforcing steel bar nets (230) and energy storage mechanisms (300) for tensioning the reinforcing steel bar nets (230), wherein each retaining wall (210) is correspondingly arranged between the two upright columns (220), the upright columns (220) are arranged at two ends of the retaining wall (210) in the length direction, two ends of the reinforcing steel bar nets (230) in the length direction are respectively arranged on the two upright columns (220), gaps are formed between the reinforcing steel bar nets (230) and the retaining wall (210), the reinforcing steel bar nets (230) and the upright columns (220) move relatively, and the energy storage mechanisms (300) are connected with the reinforcing steel bar nets (230);
the roadbed (120) is formed at the lowest position of the ground (100), side slopes (110) are formed on one side or two sides of the roadbed (120), the upright columns (220) are arranged on the ground (100) and between the roadbed (120) and the side slopes (110), the upright columns (220) are uniformly distributed along the length direction of the roadbed (120), the cross sections of the upright columns (220) are arranged in a square shape, the upright columns (220) are provided with vertically-arranged clamping grooves (221) on two end faces in the length direction of the roadbed (120), the retaining wall (210) is arranged between the two upright columns (220), two ends of the retaining wall (210) in the length direction of the roadbed (120) are respectively inserted into the opposite clamping grooves (221) of the two adjacent upright columns (220), the reinforcing mesh (230) is arranged on one side, close to the side slopes (110), of the retaining wall (210), the reinforcing mesh (230) is arranged in parallel to the retaining wall (210), the length direction of the reinforcing mesh (230) is flush with the length direction of the roadbed (120), one side, one upright column (220) close to the roadbed (120) is arranged in the length direction of the roadbed (120) The end face of the energy storage mechanism (300) is provided with a placing groove (222) for placing the energy storage mechanism (300), the placing groove (222) is vertically arranged, the energy storage mechanism (300) comprises a steel cable (310) and a gravity piece (320), the gravity piece (320) is a storage basket, the gravity piece (320) is placed in the placing groove (222), the steel cable (310) is connected with one end of the steel mesh reinforcement (230) in the length direction, the other end of the steel cable (310) penetrates through the upright column (220) and then is connected with the gravity piece (320), and when the gravity piece (320) naturally droops, the steel mesh reinforcement (230) is tensioned;
a rock falling groove (130) used for storing falling rocks is formed in the ground (100), and the rock falling groove (130) is arranged below the reinforcing mesh (230) so that the falling rocks bounced off by the reinforcing mesh (230) fall into the rock falling groove (130) under the action of gravity.
2. The cut slope enhanced passive protection system of claim 1, wherein: the energy storage mechanism (300) further comprises a pulley block (340), the pulley block (340) is arranged on the upright post (220), and the steel cable (310) is sleeved on the pulley block (340).
3. The cut slope enhanced passive protection system of claim 1, wherein: the reinforcing mesh (230) and the steel cable (310) are connected through a turn buckle (350).
4. The cut slope enhanced passive protection system of claim 3, wherein: a protection hole (223) is formed in the upright column (220), and the turn buckle (350) penetrates through the protection hole (223).
5. The cut slope enhanced passive protection system of claim 4, wherein: the diameter of the protection hole (223) near the end of the mesh reinforcement (230) is larger than the diameter of the protection hole far from the end of the mesh reinforcement (230).
6. The cut slope enhanced passive protection system according to any one of claims 1 to 5, wherein: the gravity piece (320) is arranged on one side of the retaining wall (210) far away from the reinforcing mesh (230).
7. A construction method for constructing the cutting slope enhanced passive protection system according to claim 1, comprising:
s01: pre-casting a retaining wall (210);
s02: pouring a stand column (220);
s03: clamping the retaining wall (210) on the upright post (220);
s04: connecting the reinforcing mesh (230) with the energy storage mechanism (300).
8. The construction method according to claim 7, wherein: in step S02, a reserved hole through which the energy storage mechanism (300) passes is reserved when the pillar (220) is poured.
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| CN113756217B (en) * | 2021-09-30 | 2023-02-07 | 应急管理部国家自然灾害防治研究院 | Collapse falling stone protection net structure with toughness energy dissipation function and installation method |
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| CN209010999U (en) * | 2018-07-04 | 2019-06-21 | 四川方成铁建建设工程有限公司 | A kind of soft protecting net system |
| CN208733650U (en) * | 2018-07-07 | 2019-04-12 | 孙来庆 | A kind of side slope protection buffering energy dissipation mechanisms |
| CN210888313U (en) * | 2019-08-19 | 2020-06-30 | 段佳阳 | Novel pumped storage is anticollision barrier for power station |
| CN111997071A (en) * | 2020-09-24 | 2020-11-27 | 招商局重庆交通科研设计院有限公司 | Active and passive net combined flexible protection device |
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2020
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