CN111851368A - Anti-collision wall with crushing energy-absorbing structure - Google Patents
Anti-collision wall with crushing energy-absorbing structure Download PDFInfo
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- CN111851368A CN111851368A CN202010743823.9A CN202010743823A CN111851368A CN 111851368 A CN111851368 A CN 111851368A CN 202010743823 A CN202010743823 A CN 202010743823A CN 111851368 A CN111851368 A CN 111851368A
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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
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/08—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks
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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
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/08—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks
- E01F15/081—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks characterised by the use of a specific material
- E01F15/083—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks characterised by the use of a specific material using concrete
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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
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/08—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks
- E01F15/088—Details of element connection
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/02—Methods or installations for obtaining or collecting drinking water or tap water from rain-water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/0232—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means with at least one gas spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/046—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means using combinations of springs of different kinds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
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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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
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- General Engineering & Computer Science (AREA)
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- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
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Abstract
The invention relates to an anti-collision wall with a crushing energy-absorbing structure, and belongs to the field of traffic engineering. The anti-collision wall with the crushing energy-absorbing structure comprises a back wall, a crushing energy-absorbing layer, an outer anti-collision body and a traveling crane guide block; a crushing energy absorption layer is arranged between the back wall and the outer anti-collision body; the other side end face of the outer anti-collision body relative to the crushing energy absorption layer is a curved surface end face, and a traveling crane induction block is arranged at the bottom end of the curved surface end face. The anti-collision wall with the crushing energy-absorbing structure can fully absorb the impact energy of a vehicle, and the energy-absorbing member is of a disposable structure, so that the energy-absorbing member cannot be recycled after the structure is damaged in collision, and the safety of a road is guaranteed. The related components have low cost, simple preparation and easy replacement. Adopt the steerable striking orbit that strikes the vehicle of driving guide piece to effectively guide the impact to reasonable crashproof guide piece department, more effectual crashproof wall improvement energy-absorbing effect that lets.
Description
Technical Field
The invention relates to an anti-collision wall with a crushing energy-absorbing structure, and belongs to the field of traffic engineering.
Background
Steel anticollision barrier can absorb partial energy among the current anticollision equipment, but when the speed of a motor vehicle was too fast, steel anticollision barrier can lose the guard action after plastic deformation to the steel sheet after the deformation introduces into the vehicle easily and brings danger for inside personnel.
Still be equipped with anti-collision barrel at road bifurcation department, inside packs grit etc. when the vehicle striking, anti-collision barrel can absorb partial impact energy, but anti-collision barrel's volume is limited, in case hit the back, the vehicle can pass anti-collision barrel and continue to drive to the road outside.
Disclosure of Invention
The invention provides an anti-collision wall with a crushing energy-absorbing structure, which aims to make up the defects of the existing anti-collision barrel and the existing steel anti-collision guardrail.
The invention adopts the following technical scheme:
the anti-collision wall with the crushing energy-absorbing structure comprises a back wall, a crushing energy-absorbing layer, an outer anti-collision body and a traveling crane guide block; a crushing energy absorption layer is arranged between the back wall and the outer anti-collision body; the other side end face of the outer anti-collision body relative to the crushing energy absorption layer is a curved surface end face, and a traveling crane induction block is arranged at the bottom end of the curved surface end face.
According to the anti-collision wall with the crushing and energy absorbing structure, the plurality of guide rod mounting openings are formed in the curved surface end surface of the outer anti-collision body and are arranged in a straight line, and the plurality of guide rod mounting openings arranged in the straight line are parallel to the horizontal ground.
According to the anti-collision wall with the crushing energy-absorbing structure, the crushing energy-absorbing layer is formed by mutually combining and laminating a plurality of crushing energy-absorbing blocks, and the crushing energy-absorbing blocks are of a cubic structure; the crushing energy absorption block is internally provided with a hollow cavity structure, and the cavity structure forms two ladder-shaped cavity structures with top edges oppositely arranged; the side walls of the crushing energy absorption blocks at two bevel edges of the cavity of the trapezoidal cavity structure form triangular groove end surfaces which are folded inwards; the side walls of the crushing energy absorption blocks at two bottom edges of the cavity corresponding to the trapezoidal cavity structure form I-shaped structure end faces;
the crushing energy absorption blocks are transversely spliced with each other from left to right and longitudinally spliced with each other from front to back to form a single-layer crushing energy absorption layer, and the back wall and the outer anti-collision body are mutually superposed by a plurality of single-layer crushing energy absorption layers.
According to the anti-collision wall with the crushing energy-absorbing structure, the end faces of the I-shaped structure of the single-layer crushing energy-absorbing layer face the inner side wall of the back wall and the inner side wall of the outer anti-collision body respectively. Hard transition is formed at the change position of the end section in the single-layer crushing energy absorption layer, so that stress concentration is formed at the abrupt change position of the section, and the energy absorption unit is induced to be damaged.
According to the anti-collision wall with the crushing energy-absorbing structure, the crushing energy-absorbing block is made of a porous cement-based composite material, the strength of the cement-based composite material is not more than 3MPa, and the strain rate is more than 1%; the porosity of the crushing energy absorption block is less than or equal to 60 percent; wherein the proportion of non-occluded pores should exceed 50% of the total number of pores.
According to the anti-collision wall with the crushing energy-absorbing structure, the contact groove is formed in the inner side wall of the back wall, and the contact groove is formed in the inner side wall of the outer anti-collision body.
According to the anti-collision wall with the crushing energy-absorbing structure, the driving induction block is of a curved-edge triangular structure, the top surface of the driving induction block is a driving arc-shaped road surface, the arc linearity of the arc-shaped road surface is the same as that of the driving surface, and the included angle between the arc-shaped road surface and the driving surface is smaller than or equal to 30 degrees.
According to the anti-collision wall with the crushing energy-absorbing structure, the anti-collision guide block is arranged in the guide rod mounting hole.
According to the anti-collision wall with the crushing energy-absorbing structure, the anti-collision guide block comprises two steel plates which are arranged oppositely, namely a first steel plate and a second steel plate, and an energy-absorbing member is arranged between the two steel plates; the energy-absorbing member is formed by arranging a plurality of hexagonal steel pipes, and the hexagonal steel pipes are arranged perpendicular to the steel plate; the outer side of one of the steel plates is provided with a connecting ring.
According to the anti-collision wall with the crushing energy-absorbing structure, the two top edges of the crushing energy-absorbing block are oppositely provided with the energy-absorbing crushing points at the bending parts in the trapezoidal cavity structure, and the energy-absorbing medium is filled in the trapezoidal cavity structure in the crushing energy-absorbing block. The filling medium is as follows: balloons, and the like; the energy absorbing medium comprises various air bags or balloons which are matched with the structure size of the cavity in the trapezoidal state. The air bag or the balloon can be filled with inert energy absorption media. For example mixtures of sand, water, grease, crushed rubber and sand
Advantageous effects
The anti-collision wall with the crushing energy-absorbing structure can fully absorb the impact energy of a vehicle, and the energy-absorbing member is of a disposable structure, so that the energy-absorbing member cannot be recycled after the structure is damaged in collision, and the safety of a road is guaranteed. The related components have low cost, simple preparation and easy replacement.
According to the anti-collision wall with the crushing energy-absorbing structure, the driving guide block is adopted to control the collision track of a collision vehicle, so that the collision force is effectively guided to the reasonable anti-collision guide block, and the energy-absorbing effect of the anti-collision wall is improved more effectively.
The anti-collision wall with the crushing energy-absorbing structure provided by the invention adopts the accumulated arrangement of the independent crushing energy-absorbing blocks to form a better buffering energy-absorbing layer, each independent crushing energy-absorbing block has a good crushing energy-absorbing structure, and the impact is gradually absorbed and transmitted through each independent crushing energy-absorbing block, so that the impact force is gradually relieved, and the effect of the anti-collision wall is better than that of different energy-absorbing anti-collision bodies.
According to the anti-collision wall with the crushing energy-absorbing structure, the energy-absorbing medium is filled in the independent crushing energy-absorbing blocks, so that the anti-collision wall can cope with impact forces caused by different masses, and the applicability of the anti-collision is further improved.
According to the anti-collision wall with the crushing energy-absorbing structure, the materials prepared by the crushing energy-absorbing blocks are reasonable, so that the overall price of the anti-collision wall is low, the anti-collision wall is more suitable for road sections, and the manufacturing cost is saved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the back wall construction of the present invention;
FIG. 3 is a schematic structural view of an outer bump guard of the present invention;
FIG. 4 is a schematic view of the crush absorber block of the present invention;
FIG. 5 is a side view schematic of the crash guide block of the present invention;
fig. 6 is a front view structural schematic diagram of the collision avoidance guide block of the present invention.
In the figure, 1 is a back wall, 2 is a crushing energy absorption layer, 3 is an outer anti-collision body, 4 is a traveling crane guide block, 5 is a guide rod mounting opening, 6 is a contact groove, 7 is an anti-collision guide block, 71 is a first steel plate, 72 is a second steel plate, 73 is an energy absorption component, 74 is a connecting ring, 8 is a crushing energy absorption block, 81 is a ladder-shaped cavity structure, 82 is a triangular groove end face, and 83 is an I-shaped structure end face.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
As shown in fig. 1-2: an anti-collision wall with a crushing energy-absorbing structure comprises a back wall 1, a crushing energy-absorbing layer 2, an outer anti-collision body 3 and a driving guide block 4; a crushing energy absorption layer 2 is arranged between the back wall 1 and the outer anti-collision body 3; the other side end face of the outer anti-collision body 3 relative to the crushing energy absorption layer 2 is a curved end face, and a traveling crane guide block 4 is arranged at the bottom end of the curved end face.
The driving induction cushion block 4 is of a curved-edge triangular structure, the top surface is a driving road surface, the arc line of the driving induction cushion block is linearly tangent to the driving surface, and the included angle between the arc line and the driving surface is not more than 30 degrees; the composition material is a porous structure, the porosity is not more than 60%, the strength is 1-3MPa, the driving induction cushion block 4 is not more than 2m generally, and the gradient design is not more than 10 degrees. When the overspeed vehicle collides, the driving induction cushion block 4 has lower strength, and the wheels crush the cushion block under the action of the gravity of the vehicle to absorb certain energy and guide the vehicle to collide with the anti-collision crushing energy absorption layer 2.
As shown in fig. 3: the outer anti-collision body 3 is prepared by foam materials, preferably foam concrete materials, the material strength is not higher than 3MPa, the porosity is more than 40%, the height of the wall body is 0.8-1.2m, and the thickness is not more than 40 cm; the anti-collision guide block is characterized in that the anti-collision surface is an irregular curved edge, the vertical cross section is approximately trapezoidal, the anti-collision guide arc line is arranged at the bottom of the anti-collision guide block at the position of the anti-collision surface facing the roadway, the anti-collision guide block mounting opening 5 is arranged at the middle position (a step with the width of 5cm is arranged at the position about 10-30cm away from the ground), the anti-collision guide block mounting opening 5 is arranged at the rear side of the step. The guide rod mounting openings 5 are arranged in a straight line, and the guide rod mounting openings 5 arranged in a straight line are parallel to the horizontal ground.
As shown in fig. 4, the energy absorbing and crushing layer is formed by mutually combining and laminating a plurality of energy absorbing and crushing blocks 8, wherein the energy absorbing and crushing blocks 8 are of cubic structures; the crushing energy absorption block 8 is internally provided with a hollow cavity structure, and the cavity structure forms two ladder-shaped cavity structures 81 with opposite top edges; triangular groove end surfaces 82 which are folded inwards are formed on the side walls of the crushing energy absorption blocks at two bevel edges of the cavity of the trapezoidal cavity structure; the side walls of the crushing energy absorption blocks at two bottom edges of the cavity corresponding to the trapezoidal cavity structure 81 form I-shaped structure end surfaces 83; when the crushing energy-absorbing block 8 is of a solid structure made of porous materials or a cavity structure made of plates, and the I-shaped structure end face 83 of the crushing energy-absorbing block 8 is impacted and squeezed, the bending part I on one side or two sides of the trapezoid-shaped cavity structure 81 absorbs impact force and transmits the impact force to the bending part II and the bending part III; at the moment, the bending part I, the bending part II and the bending part III deform until the bending part I, the bending part II and the bending part III are cracked to release the absorbed impact, and the external impact energy is absorbed by using the brittle fracture or plastic deformation of the material. The porosity is more than 40%, and the strength is not higher than 2 MPa.
As a preferable scheme of the crash wall with the crushing and energy absorbing structure, the trapezoid-shaped cavity structure 81 in the crushing and energy absorbing block 8 can be in a non-filling state, or the trapezoid-shaped cavity structure 81 can be filled with a structure, and the filling materials can be balloons, air bags and the like. The energy absorbing medium comprises various air bags or balloons which are matched with the structure size of the cavity in the trapezoidal state. The air bag or the balloon can be filled with inert energy absorption media. Such as a mixture of sand, water, grease, crushed rubber and sand.
As can be seen from fig. 4, the plurality of crushing energy-absorbing blocks are transversely spliced with each other in the left-right direction and longitudinally spliced with each other in the front-back direction to form a single-layer crushing energy-absorbing layer, and the back wall and the outer anti-collision body are mutually overlapped by a plurality of single-layer crushing energy-absorbing layers.
As shown in fig. 5-6: the anti-collision guide block 7 comprises two steel plates which are oppositely arranged, namely a first steel plate 71 and a second steel plate 72, and an energy-absorbing member 73 is arranged between the two steel plates; the energy absorbing member 73 is formed by arranging a plurality of hexagonal steel pipes which are arranged perpendicularly to the steel plate; the outer side of one of the steel plates is provided with a connecting ring 74.
In order to better transmit energy to the crushing energy absorption layer at the rear side, the back of the anti-collision body is provided with alternate contact grooves 6, the width of each contact groove 6 is 2cm, the depth of each contact groove is 1cm, and the spacing distance is 2 cm. When the anti-collision guide block 7 deforms and can not absorb impact energy, the anti-collision guide block 7 deforms backwards along with the collision of the vehicle to guide the vehicle to collide with the anti-collision body, and the energy absorption effect is better than that of the anti-collision guide block because the anti-collision body is made of foam material. At the moment, the impact surface of the vehicle is enlarged, the anti-collision body is rapidly dispersed in the impact, partial impact energy is absorbed by crushing materials, the anti-collision body can move backwards under the impact action due to the fact that the anti-collision body is arranged on the road side, and the impact energy is transmitted to the crushing energy absorption block through the contact groove.
The back wall 1 is a concrete cast wall body, and the middle lower part of the wall body is provided with an enlarged wall corner to stabilize the wall body and improve the supporting force; the thickness of the wall body is not less than 10cm, and the side, facing the vehicle, of the wall body is provided with continuous spacing ribs so as to increase the interaction between the wall body and the energy-absorbing building blocks; the rib width is not more than 2cm, and the spacing size is not more than 2 cm.
The external anti-collision body and the energy-absorbing building block are made of porous materials and are directly arranged at a use position after being made, the porosity in the anti-collision body is between 30 and 70 percent, the strength is between 0.3 and 3MPa, the pore distribution of the anti-collision body is increased along the height from the ground in actual use, and the pore content is increased; the porosity of the energy-absorbing building block is not lower than 50%, and the strength is not higher than 2 MPa. The pore structure of the anti-collision body can drain rainwater accumulated on the traffic lane, retain sundries in the rainwater, play an initial filtering role on the rainwater and be beneficial to environmental protection.
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 changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides an anticollision wall that contains broken energy-absorbing structure which characterized in that: comprises a back wall, a broken energy absorbing layer, an outer anti-collision body and a traveling crane guide block; a crushing energy absorption layer is arranged between the back wall and the outer anti-collision body; the other side end face of the outer anti-collision body relative to the crushing energy absorption layer is a curved surface end face, and a traveling crane induction block is arranged at the bottom end of the curved surface end face.
2. The crash wall with a crush energy-absorbing structure according to claim 1, wherein: the middle part of the curved surface end surface of the outer anti-collision body is provided with a plurality of guide rod mounting openings, the guide rod mounting openings are arranged in a straight line, and the guide rod mounting openings arranged in the straight line are parallel to the horizontal ground.
3. The crash wall with a crush energy-absorbing structure according to claim 1, wherein: the energy absorption crushing layer is formed by mutually combining and laminating a plurality of energy absorption crushing blocks, and the energy absorption crushing blocks are of spatial three-dimensional structures; the crushing energy absorption block is internally provided with a hollow cavity structure, and the cavity structure forms two ladder-shaped cavity structures with top edges oppositely arranged; the side walls of the crushing energy absorption blocks at two bevel edges of the cavity of the trapezoidal cavity structure form triangular groove end surfaces which are folded inwards; the side walls of the crushing energy absorption blocks at the two bottom edges of the cavity of the trapezoidal cavity structure keep a plane, which is beneficial to the energy transmission of the anti-collision body;
the crushing energy absorption blocks are transversely spliced with each other from left to right and longitudinally spliced with each other from front to back to form a single-layer crushing energy absorption layer, and the back wall and the outer anti-collision body are mutually superposed by a plurality of single-layer crushing energy absorption layers.
4. The crashworthy wall containing the crushing energy-absorbing structure according to claim 3, wherein: the end surfaces of the single-layer crushing energy absorption layer face the inner side wall of the back wall and the inner side wall of the outer anti-collision body respectively.
5. The crashworthy wall containing the crushing energy-absorbing structure according to claim 3, wherein: the crushing energy absorption block is prepared from a porous cement-based composite material, the strength of the crushing energy absorption block is not more than 3MPa, and the strain rate is more than 1%; a porosity in the member of less than or equal to 60%; wherein the proportion of non-occluded pores exceeds 50% of the total number of pores.
6. The crash wall with a crushing and energy absorbing structure according to claim 1 or 4, wherein: the inside wall of back wall be equipped with the contact groove, the inside wall of outer collision avoidance body is equipped with the contact groove.
7. The crash wall with a crush energy-absorbing structure according to claim 1, wherein: the driving inducing block is of a triangle structure with curved edges, the top surface of the driving inducing block is a driving arc-shaped road surface, the arc line of the arc-shaped road surface is the same as the driving surface, and the included angle between the arc-shaped road surface and the driving surface is less than or equal to 30 degrees.
8. The crash wall with a crush energy-absorbing structure according to claim 2, wherein: and an anti-collision energy-absorbing guide block is arranged in the guide rod mounting port.
9. The crash wall with a crush energy-absorbing structure according to claim 8, wherein: the anti-collision guide block comprises two steel plates which are oppositely arranged, namely a first steel plate and a second steel plate, and an energy-absorbing member is arranged between the two steel plates; the energy-absorbing member is formed by arranging a plurality of hexagonal steel pipes, and the hexagonal steel pipes are arranged perpendicular to the steel plate; the outer side of one of the steel plates is provided with a connecting ring.
10. The crashworthy wall containing the crushing energy-absorbing structure according to claim 3, wherein: the two top edges of the crushing energy-absorbing block are oppositely arranged, each bent part in the trapezoidal cavity structure is an energy-absorbing crushing point, and energy-absorbing media are filled in the trapezoidal cavity structure in the crushing energy-absorbing block; the energy absorption medium comprises various air bags or balloons which are matched with the structure size of the cavity in the trapezoidal state; the air bag or the balloon is filled with inert energy absorption media.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010743823.9A CN111851368B (en) | 2020-07-29 | 2020-07-29 | Anti-collision wall with crushing energy-absorbing structure |
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| CN202010743823.9A CN111851368B (en) | 2020-07-29 | 2020-07-29 | Anti-collision wall with crushing energy-absorbing structure |
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| CN111851368A true CN111851368A (en) | 2020-10-30 |
| CN111851368B CN111851368B (en) | 2022-05-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112554100A (en) * | 2020-11-30 | 2021-03-26 | 重庆交通大学 | Anti-collision protection system for long and large descending section of highway |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| JP2001159108A (en) * | 1999-12-03 | 2001-06-12 | Toray Ind Inc | Impact energy absorbing member for structure on road and the structure on road provided with the absorbing member |
| CN106988245A (en) * | 2017-05-15 | 2017-07-28 | 中南大学 | A kind of central guardrail of removable friction-type and preparation method thereof |
| CN107762220A (en) * | 2017-10-23 | 2018-03-06 | 沈阳建筑大学 | Consume energy anti-collision wall in garage |
| CN109137832A (en) * | 2018-10-26 | 2019-01-04 | 武汉海威船舶与海洋工程科技有限公司 | Bridge pier protection guard |
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| CN112554100A (en) * | 2020-11-30 | 2021-03-26 | 重庆交通大学 | Anti-collision protection system for long and large descending section of highway |
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| CN111851368B (en) | 2022-05-27 |
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