CN210596984U - Anti-collision buffer member - Google Patents
Anti-collision buffer member Download PDFInfo
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- CN210596984U CN210596984U CN201920461247.1U CN201920461247U CN210596984U CN 210596984 U CN210596984 U CN 210596984U CN 201920461247 U CN201920461247 U CN 201920461247U CN 210596984 U CN210596984 U CN 210596984U
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Abstract
The utility model provides a crashproof buffer member, the material of crashproof buffer member's main part is formed by elastic particle and organic bonding material mixture, and it has the same vertical perforating hole of diameter and horizontal perforating hole to open in this main part, and vertical perforating hole and horizontal perforating hole all arrange according to the rectangle array: the row spacing of the holes is equal to the diameter of the holes, the row spacing of the holes is equal to 3 times of the diameter of the holes, the spacing between each transverse through hole and the longitudinal through holes of the two adjacent rows is equal to the diameter of the holes, and the spacing between each longitudinal through hole and the transverse through holes of the two adjacent rows is equal to the diameter of the holes. When high-speed impact is applied, elastic plastic waves are formed inside the component, so that impact force cannot form impact resultant force on the protection plane at the same time, and impact force is effectively reduced. The component has the characteristics of simple structure, low manufacturing cost, good anti-collision buffering effect and the like.
Description
Technical Field
The utility model relates to an anticollision protection structure especially relates to a collision buffer member for pier protection.
Background
With the development of market economy, traffic is spread all over the country, and in mountainous areas and canyons, as various geological disasters are accompanied, the bridge abutment protection in the areas is not taken an attention all the time, so that the capacity of the bridge for resisting adverse geological disasters is far insufficient, and the bridge safety is seriously tested; municipal road networks in the current city construction process are increasingly dense, various municipal elevated overpasses are complex in complexity, and the risk that a vehicle impacts a pier is greatly increased along with the great increase of traffic volume. In a severe collision accident of a bridge pier, in addition to casualties and huge direct economic losses, indirect economic losses and social influences caused by the fact that traffic lines are blocked are difficult to estimate.
At present, most of pier parts with various collision risks are not specially designed, and only individual piers are provided with simple protective measures according to needs. Although these simple measures can reduce the impact damage of the impactor and the pier to a certain extent, they have many disadvantages and shortcomings due to lack of systematic research. The method comprises the following steps:
the protection structure form that A adopted is simple, destroys the power consumption form singlely, can't effectively protect high energy rammer.
The related pier protection mainly adopts some simple protection measures, such as: steel protects a section of thick bamboo, concrete reinforcement pier and general comparatively simple flexible protection body etc.. When the pier receives the striking, current flexible pier protector simple structure is coarse, and the power consumption form is single, and when the striking of face high energy, most energy still is born by the pier, and the pier still receives great impact, and the impact that the pier received can not effectual reduction of this type of protection to can not play due protection to the pier.
The energy grade B is not clear, and no setting product can be selected by the bridge piers with different protection requirements (anti-collision force or impact energy).
The existing protection device is single and fixed in structure and cannot adjust the rigidity of the protection device according to different protection working conditions to adapt to different protection energy requirements. For protection of different energy levels, foamed aluminum, PMI and polyurethane can only adapt to the energy levels by adjusting the volume of the foamed aluminum, PMI and polyurethane, and can not effectively adapt to the requirements of larger energy levels by changing the structure of the foamed aluminum, PMI and polyurethane in places with special requirements on the protection volume. Thereby causing a limitation in its use.
And C, the production cost, the installation cost and the maintenance cost are high.
PMI materials are expensive, and PMI foam is easy to age along with the time, so that the cost performance is low. More waste materials are easily generated during foaming of the foamed aluminum, so that the production cost of the foamed aluminum is high, and the overall cost performance is low. Meanwhile, the existing protection device is generally installed in an integral manner, large-scale equipment is generally needed during installation, installation cost is increased, and when pier protection is carried out in places with inconvenient traffic, whether the large-scale equipment can conveniently reach or not brings serious examination to the construction period; when local damage occurs, the damaged part cannot be replaced locally, but the damaged part is replaced integrally, so that the maintenance cost is greatly increased.
The Chinese patent document discloses a light anti-seismic hollow prefabricated wall brick (CN201721757935. X): a buffer frame is arranged in the cavity of the cement mortar wall brick main body, and a plurality of buffer cavities formed by the crossed reinforcing ribs are arranged in the buffer frame. The anti-collision brick has the advantages of stable brick structure, enhanced anti-seismic performance and certain anti-seismic buffering effect, but is not suitable for anti-collision protection of large piers.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can reduce striking counter-force, simple structure, the crashproof buffer member that the cost of manufacture is low by a wide margin to prior art's problem.
The purpose of the utility model is realized like this: a crash-proof buffer member, the main body of the crash-proof buffer member is an elastic buffer body, the main body is provided with a longitudinal through hole and a transverse through hole with the same diameter, and the longitudinal through hole and the transverse through hole are arranged in a rectangular array: the row spacing of the holes is equal to the diameter of the holes, the row spacing of the holes is equal to 3 times of the diameter of the holes, the spacing between each transverse through hole and the longitudinal through holes of the two adjacent rows is equal to the diameter of the holes, and the spacing between each longitudinal through hole and the transverse through holes of the two adjacent rows is equal to the diameter of the holes.
The main body of the anti-collision buffer component is a cuboid or a cube, the central connecting lines of each row of longitudinal through holes are parallel to the upper edge and the lower edge of the front side vertical face and the rear side vertical face of the cuboid, the central connecting lines of each row of longitudinal through holes are parallel to the left edge and the right edge of the front side vertical face and the rear side vertical face of the cuboid, the central connecting lines of each row of transverse through holes are parallel to the upper edge and the lower edge of the left side vertical face and the right side vertical face of the cuboid, and the central connecting lines of each row of transverse through holes are parallel to the left edge and the right edge of the left.
Compared with the prior art, the utility model has the following characteristics and advantages:
1. simple structure, low manufacturing cost and convenient popularization and use.
The member body is formed by solidifying organic bonding materials (such as liquid polyurethane) by using elastic particles such as rubber particles (made of waste tires).
2. The collision reaction force can be greatly reduced.
The utility model discloses a buffer device, which is used as a protective structure, the buffer protective device is mainly formed by polymerizing a cementing material and elastic particles according to a certain structure, and the intensity of the buffer structure is changed by adjusting the proportion of the cementing material; when the protection component is impacted at a high speed, elastic plastic waves are formed inside the component, so that impact force cannot form impact resultant force on a protection plane at the same time when the elastic plastic waves are transmitted in the impact direction in the impact process, and impact counter force is reduced. The protective buffer member is mainly used for preventing vehicle collision and flying stone collision.
3. The structure consists of elastic particles A and an organic binding material, namely a polymer material B, and the rigidity of the polymer material is changed by adjusting the ratio of A, B so as to adapt to the buffer protection under different energy levels.
4. The component can be cut in a modular mode according to the shape of a protected object, so that transportation and installation are facilitated, and meanwhile, after the component is damaged by impact, only the damage structure needs to be replaced, and the component does not need to be integrally replaced.
Drawings
Fig. 1 is a front view (cross section) of a crash cushion (cube) according to the present invention.
FIG. 1a is a left side cross-sectional view of FIG. 1 (taken through the center of any row of holes in the figure).
Fig. 2 is a cross-sectional view of a conventional solid monolith for comparison. Drawing (A)
And 2a is the structural impulse reaction force curve of figure 2.
FIG. 3 is a cross-sectional view of a control member having only a longitudinal through-hole array. Drawing (A)
And 3a is the structural impulse reaction force curve of figure 3.
Fig. 4a is a graph of the impulse reaction force of the structure of fig. 1 and 1 a.
Fig. 5 is a cross-sectional view of the crash cushion member based on fig. 1 and satisfying the row-to-column spacing conditions of the hole array of the present invention.
Fig. 5a is a graph of the impact reaction force of the structure of fig. 5.
Detailed Description
Referring to fig. 1, fig. 1a and fig. 5, the main body of the crash-proof buffer member is made of a mixture of elastic particles and organic adhesive materials, the main body is provided with longitudinal through holes and transverse through holes with the same diameter, the central axes of the two types of through holes are vertical in different planes and do not intersect, and the longitudinal through holes and the transverse through holes are arranged in a rectangular array: the row spacing of the holes is equal to the diameter of the holes, the row spacing of the holes is equal to 3 times of the diameter of the holes, the spacing between each transverse through hole and the longitudinal through holes of the two adjacent rows is equal to the diameter of the holes, and the spacing between each longitudinal through hole and the transverse through holes of the two adjacent rows is equal to the diameter of the holes.
Under the condition that the component main body is a cuboid or a cube, the material of the anti-collision buffer component main body is formed by uniformly distributing elastic particles in an organic bonding material; the front side facade and the rear side facade of the cuboid are provided with longitudinal through holes which are arranged according to a rectangular array: the central connecting line of each row of longitudinal through holes is parallel to the upper edge and the lower edge of the front side vertical surface and the rear side vertical surface of the cuboid, the central connecting line of each column of longitudinal through holes is parallel to the left edge and the right edge of the front side vertical surface and the rear side vertical surface of the cuboid, the distance between two adjacent longitudinal through holes in each row of longitudinal through holes is equal to the diameter of the longitudinal through holes, and the distance between two adjacent longitudinal through holes in each column of longitudinal through holes is equal to 3 times of the diameter of the longitudinal through holes; the left and right vertical surfaces of the cuboid are provided with transverse through holes arranged in a rectangular array, the distance between two adjacent transverse through holes in each row of transverse through holes is equal to the diameter of the transverse through holes, and the distance between two adjacent transverse through holes in each column is equal to 3 times of the diameter of the transverse through holes; the distance between each transverse through hole and the longitudinal through holes in two adjacent rows is equal to the diameter of the transverse through hole; the distance between each longitudinal through hole and the transverse through holes of two adjacent rows is equal to the diameter of the longitudinal through hole.
Considering that the pure elastomer material has limited buffer deformation (similar to rubber blocks, polyurethane blocks and the like, good overall compactness and limited deformation displacement), the buffer effect is general. In order to increase the cushioning effect of the elastomer, the elastomer particles are bonded into a designed structure by polymerizing a bonding material, and a certain gap between the elastomer particles (the gap between the particles is adjusted to meet the deformation) and a higher bonding strength (in the case that the elastomer particles are deformed greatly, the structure cannot be deformed and damaged irreversibly due to tensile fracture) are required.
The elastic buffer body is formed by bonding elastic particles and organic polymer bonding materials.
Optional ranges for the elastomeric particulate material: polyurethane particles, rubber particles, and the like.
Organic adhesive material: 189 resin, vinyl resin, polyurethane, AB glue, etc.
The selection principle of elastic particles in the elastic buffer material is effective and economical, and the elastic particles with certain strength can be selected, but the economical efficiency is considered, and the elastic particle material is selected from rubber particle materials (the elastic particles have more production on the market compared with polyurethane particles, and waste tires are generally selected to be made into rubber particles with required meshes).
The strength of the elastomer is mainly determined by the strength, compactness, bonding performance of bonding materials, bonding contact area between particles and the like of the rubber particles.
1. Considering the strength requirement and the bonding area requirement of the buffer body, the mesh number of the used rubber particle material is 3-9 meshes;
2. rubber particles with the mesh number of 5 are adopted to be bonded with different bonding materials, the mass ratio of the rubber particles to the bonding materials is 93:7, the test data is shown in table 1, and the buffering effect after the rubber particles are bonded with the liquid polyurethane material is the best in consideration of buffering displacement;
TABLE 1 Performance test of different bonding materials
3. According to the mass of rubber particles: the mass of the polyurethane is 93: 7-70: 30, the yield stress of the material can be adjusted to be 0.7MPa-5MPa, the buffering of different energy levels is realized by adjusting the proportion of different materials, and the polymerized material is not damaged and can return to the original state after being compressed by 65 percent (in the compression direction) in a static pressure test;
and (4) conclusion: the elastic buffer body is bonded by a rubber particle material with the mesh number of 3-9 and a polyurethane material, and the mass ratio is 93: 7-70: 30.
The protective buffer structure is shown in figure 1, and comprises elastic particles A and a polymer material B which is an organic bonding material, wherein the elastic particles A and the polymer material B are polymerized into a cube (the plane view is square) according to a certain ratio, and criss-cross through holes are formed in the cube.
1. According to the formula A: b93: 7 to a: b is 70:30, the yield stress of the material can be adjusted to be in the range of 0.7MPa-5MPa, the buffering of different energy levels is realized by adjusting different material proportions, and the polymerized material is not damaged and can return to the original state after being compressed by 65 percent (in the compression direction) in a static pressure test;
2. fig. 2 is an integral structure and is integrally made of uniform elastoplastic media, fig. 3 is a longitudinal through hole formed by hollowing according to the array type hollow cylinder, different rigidity gradients and different media distribution are realized in the impact direction, and stress waves of the same wave surface cannot reach a protection surface at the same time under the rigidity gradients and the media gradients under high-speed impact, so that impact counter force is reduced. According to simulation and actual impact test verification (same energy level impact within the buffer protection energy level range), F3＝0.65F2(F3Impact reaction force, F, for the structure of FIG. 32Impact reaction force for the structure of fig. 2).
3. Fig. 4a shows the hollowing of the array hollow cylinders according to the criss-cross arrangement, further achieving different stiffness gradients and different media distributions in the impact direction. According to simulation and actual impact test verification(same energy level impact within the buffer protection energy level range), F4＝0.5F3(F3Impact reaction force, F, for the structure of FIG. 34The impact reaction force for the structure of fig. 4 a).
4. Further improvement of the structure shown in fig. 1 and 1a is shown in fig. 5, the difference between the space △ between the hollow columns and the diameter d of the hollow columns will affect the superposition effect of the elastic-plastic wave on the protective surface, and through calculation simulation and experimental analysis, the buffering effect is the best when △: d is 1:1 (see fig. 5 a).
Claims (2)
1. A crash-proof buffer member is characterized in that the main body of the crash-proof buffer member is an elastic buffer body, the main body is provided with a longitudinal through hole and a transverse through hole which have the same diameter, and the longitudinal through hole and the transverse through hole are arranged in a rectangular array: the row spacing of the holes is equal to the diameter of the holes, the row spacing of the holes is equal to 3 times of the diameter of the holes, the spacing between each transverse through hole and the longitudinal through holes of the two adjacent rows is equal to the diameter of the holes, and the spacing between each longitudinal through hole and the transverse through holes of the two adjacent rows is equal to the diameter of the holes.
2. The crash cushion according to claim 1 wherein the body of the crash cushion is a rectangular parallelepiped or a cube, the connecting lines of the centers of each row of the longitudinal through holes are parallel to the upper and lower edges of the front and rear vertical faces of the rectangular parallelepiped, the connecting lines of the centers of each row of the longitudinal through holes are parallel to the left and right edges of the front and rear vertical faces of the rectangular parallelepiped, the connecting lines of the centers of each row of the transverse through holes are parallel to the upper and lower edges of the left and right vertical faces of the rectangular parallelepiped, and the connecting lines of the centers of each row of the transverse through holes are parallel to the left and right edges of the left and right vertical faces of the rectangular parallelepiped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920461247.1U CN210596984U (en) | 2019-04-08 | 2019-04-08 | Anti-collision buffer member |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920461247.1U CN210596984U (en) | 2019-04-08 | 2019-04-08 | Anti-collision buffer member |
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| CN210596984U true CN210596984U (en) | 2020-05-22 |
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| CN201920461247.1U Expired - Fee Related CN210596984U (en) | 2019-04-08 | 2019-04-08 | Anti-collision buffer member |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080092A (en) * | 2019-04-08 | 2019-08-02 | 西南交通大学 | Anticollision buffer component |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080092A (en) * | 2019-04-08 | 2019-08-02 | 西南交通大学 | Anticollision buffer component |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200522 |