CN110106784A - A kind of bridge guardrail structure - Google Patents
A kind of bridge guardrail structure Download PDFInfo
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- CN110106784A CN110106784A CN201910509417.3A CN201910509417A CN110106784A CN 110106784 A CN110106784 A CN 110106784A CN 201910509417 A CN201910509417 A CN 201910509417A CN 110106784 A CN110106784 A CN 110106784A
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- 230000001681 protective effect Effects 0.000 claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims description 6
- 229920006351 engineering plastic Polymers 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 description 9
- 238000007906 compression Methods 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 4
- 206010039203 Road traffic accident Diseases 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 238000013475 authorization Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/103—Parapets, railings ; Guard barriers or road-bridges
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Abstract
本发明涉及桥梁防护技术领域，公开了一种桥梁防护栏结构，设置在桥梁的两侧，包括等间距分布的防撞柱，所述防撞柱的下端与桥梁两侧的钢构架固定连接，所述防撞柱的内侧之间设有横向防护板，横向防护板与每根防撞柱均通过螺栓连接，所述防撞柱的两端内侧均固定有支撑杆，所述支撑杆的外端之间设有支撑柱，所述支撑柱上设有导向辊，所述支撑柱的端部设有连接座，所述支撑杆的外端与连接座的内侧固定连接，支撑杆的内端与防撞柱固定连接，相邻两个连接座之间通过连接板固定连接。本发明防护性能好，车辆碰撞桥梁防护栏时，导向辊对车辆具有引导、导向作用，使得车辆能够最大限度的沿着桥梁边缘处继续前行而避免冲出桥梁外。
The invention relates to the technical field of bridge protection, and discloses a bridge guardrail structure, which is arranged on both sides of the bridge and includes anti-collision columns distributed at equal intervals, and the lower ends of the anti-collision columns are fixedly connected to the steel frames on both sides of the bridge. The inner side of the anti-collision column is provided with a horizontal protective plate, and the horizontal protective plate and each anti-collision column are connected by bolts, and the inner sides of both ends of the anti-collision column are fixed with support rods, and the outer sides of the support rods A support column is provided between the ends, and a guide roller is provided on the support column, and a connecting seat is provided at the end of the support column, the outer end of the support rod is fixedly connected with the inner side of the connecting seat, and the inner end of the support rod It is fixedly connected with the anti-collision column, and the two adjacent connecting seats are fixedly connected through the connecting plate. The protection performance of the invention is good, and when the vehicle collides with the bridge guardrail, the guide roller has the function of guiding and guiding the vehicle, so that the vehicle can continue to move along the edge of the bridge to the greatest extent and avoid rushing out of the bridge.
Description
技术领域technical field
本发明涉及桥梁防护技术领域，尤其涉及一种桥梁防护栏结构。The invention relates to the technical field of bridge protection, in particular to a bridge protection fence structure.
背景技术Background technique
桥梁防护栏是指置于桥梁两侧的护栏，其目的是为了防止失控的车辆越出桥外，具有使车辆不能突破、下穿、翻越桥梁以及美化桥梁建筑的功能。目前桥梁通常都是采用钢构架，桥梁两侧的护栏通常采用钢筋混凝土浇筑而成，然而钢筋混凝土浇筑的刚性护栏，一方面钢筋混凝土重量大，桥梁负荷较大，而且损坏后维修也不方便，因此为了减轻桥梁负荷以及便于安装维修等，现在一些桥梁采用金属防护栏，即金属横杆通过金属连接座固定在桥梁的两侧，然而这种桥梁护栏防撞能力差，车辆车速较快的时候，直接将金属横杆撞断后，整车坠入江河中，车子一旦坠入水中，通常都会造成很大的人员伤亡。例如10.28重庆公交坠江事故，万州长江二桥的护栏非常简易、抗撞性能不足，整个公交车冲出护栏坠江后造成很大的人员伤亡。The bridge guardrail refers to the guardrails placed on both sides of the bridge. Its purpose is to prevent out-of-control vehicles from getting out of the bridge. At present, bridges are usually made of steel frame, and the guardrails on both sides of the bridge are usually made of reinforced concrete. However, the rigid guardrails cast by reinforced concrete, on the one hand, the weight of reinforced concrete is large, the bridge load is relatively large, and it is not convenient to repair after damage. Therefore, in order to reduce the bridge load and facilitate installation and maintenance, some bridges now use metal guardrails, that is, metal crossbars are fixed on both sides of the bridge through metal connecting seats. , After directly breaking the metal cross bar, the whole vehicle fell into the river. Once the car fell into the water, it usually caused great casualties. For example, in the 10.28 Chongqing bus crash into the river, the guardrails of the Second Wanzhou Yangtze River Bridge were very simple and had insufficient anti-collision performance.
例如中国专利授权公告号为CN207828778U，授权公告日为2018/9/7，公开了一种桥梁护栏，包括大立柱、栏杆和栏板单元，栏杆连接相邻的两个大立柱，相邻的两个大立柱之间设有一个或多个排列布置的栏板单元，大立柱为顶端向桥内侧弯折的异形立柱，且向桥内侧弯折的端部开设有通孔，栏杆穿过该通孔连接相邻的两个大立柱。该种护栏缓冲不具备缓冲吸能的效果，车辆碰撞后容易冲破护栏坠入江中。For example, the Chinese patent authorization announcement number is CN207828778U, and the authorization announcement date is 2018/9/7. It discloses a bridge guardrail, including a large column, a railing and a panel unit. The railing connects two adjacent large columns, and the adjacent two There are one or more railing units arranged in a row between the two large columns. The large column is a special-shaped column whose top is bent toward the inner side of the bridge, and a through hole is opened at the end bent toward the inner side of the bridge, through which the railing passes. The through hole connects two adjacent large columns. This kind of guardrail buffer does not have the effect of buffering energy absorption, and the vehicle is easy to break through the guardrail and fall into the river after a collision.
发明内容Contents of the invention
本发明为了解决现有技术中的桥梁护栏存在的上述问题，提供了一种桥梁防护栏结构，该种桥梁防护栏集导向、缓冲吸能与一体，当车辆与桥梁防护栏碰撞时能引导车辆沿着桥面边缘处继续前行，同时吸收垂直于桥梁防护栏方向的撞击力，从而最大限度的防止车辆坠入江中，减小交通事故中的人员伤亡。In order to solve the above-mentioned problems existing in the bridge guardrail in the prior art, the present invention provides a bridge guardrail structure, the bridge guardrail integrates guiding, buffering and energy absorption, and can guide the vehicle when the vehicle collides with the bridge guardrail Continue to move along the edge of the bridge deck, while absorbing the impact force perpendicular to the direction of the bridge guardrail, so as to prevent vehicles from falling into the river to the greatest extent and reduce casualties in traffic accidents.
为了实现上述目的，本发明采用如下技术方案：In order to achieve the above object, the present invention adopts the following technical solutions:
一种桥梁防护栏结构，设置在桥梁的两侧，包括等间距分布的防撞柱，所述防撞柱的下端与桥梁两侧的钢构架固定连接，所述防撞柱的内侧之间设有横向防护板，横向防护板与每根防撞柱均通过螺栓连接，所述防撞柱的两端内侧均固定有支撑杆，所述支撑杆的外端之间设有支撑柱，所述支撑柱上设有导向辊，所述支撑柱的端部设有连接座，所述支撑杆的外端与连接座的内侧固定连接，支撑杆的内端与防撞柱固定连接，相邻两个连接座之间通过连接板固定连接。高速行驶的车辆与该种桥梁防护栏碰撞时，车辆前端首倾斜先碰撞到导向辊上，车辆倾斜的撞击力分解成与桥梁防护栏平行的分力(简称平行分力)、与桥梁防护栏垂直的分力(简称垂直分力)，车辆在平行分力的作用下沿着导向辊继续向前移动，垂直分力通过支撑杆传递给防撞柱以抵消部分垂直分力，若碰撞剧烈，则支撑杆会溃缩(变形或断裂)吸能，车辆继续受到防护板、防撞柱的阻碍而不会坠入江中；该种桥梁防护栏纵向构建多重防护、阻碍，并将碰撞力分解后通过导向辊引导车辆继续沿着桥梁防护栏前进，从而最大限度的防止碰撞桥梁防护栏的车辆冲入护栏坠入江中，减小交通事故带来的人员伤亡。A bridge guardrail structure, which is arranged on both sides of the bridge and includes anti-collision columns distributed at equal intervals, the lower ends of the anti-collision columns are fixedly connected with the steel frames on both sides of the bridge, and the inner sides of the anti-collision columns are arranged There is a horizontal protective plate, and the horizontal protective plate is connected with each anti-collision column by bolts. The inner sides of both ends of the anti-collision column are fixed with support rods, and the outer ends of the support rods are provided with support columns. A guide roller is provided on the supporting column, and a connecting seat is provided at the end of the supporting column, the outer end of the supporting bar is fixedly connected with the inner side of the connecting seat, the inner end of the supporting bar is fixedly connected with the anti-collision column, and two adjacent The connecting seats are fixedly connected through the connecting plate. When a vehicle traveling at high speed collides with this type of bridge guardrail, the front end of the vehicle first tilts and collides with the guide roller, and the impact force of the vehicle's tilt is decomposed into a component force parallel to the bridge guardrail (parallel component force for short), and a component force parallel to the bridge guardrail. Vertical force component (referred to as vertical force component), the vehicle continues to move forward along the guide roller under the action of the parallel force component, and the vertical force component is transmitted to the anti-collision column through the support rod to offset part of the vertical force component. If the collision is severe, Then the support rod will collapse (deform or break) to absorb energy, and the vehicle will continue to be hindered by the protective plate and anti-collision column without falling into the river; Finally, guide the vehicle to continue to advance along the bridge guardrail through the guide rollers, so as to prevent the vehicles that collide with the bridge guardrail from rushing into the guardrail and falling into the river to the greatest extent, and reduce the casualties caused by traffic accidents.
作为优选，所述导向辊包括外筒、内筒，所述外筒与内筒之间设有若干连接筋，所述外筒、内筒、连接筋为一体式结构且由工程塑料制成，所述连接筋将内筒与外筒之间的空间分隔成若干溃缩吸能腔。导向辊本身由工程塑料制成，导向辊本身具有较好的支撑强度，对车辆起到导向作用，而且导向辊受到撞击后其内部的溃缩吸能腔溃缩形变也能吸能，从而吸收一部分车辆垂直碰撞力，减小防撞柱受到的冲击力。Preferably, the guide roller includes an outer cylinder and an inner cylinder, and several connecting ribs are arranged between the outer cylinder and the inner cylinder, and the outer cylinder, the inner cylinder, and the connecting ribs are of an integrated structure and made of engineering plastics, The connecting ribs divide the space between the inner cylinder and the outer cylinder into several collapse energy-absorbing cavities. The guide roller itself is made of engineering plastics. The guide roller itself has good support strength and plays a guiding role for the vehicle. After the guide roller is impacted, the collapse and energy-absorbing cavity inside the guide roller can also absorb energy, thereby absorbing Part of the vertical collision force of the vehicle reduces the impact on the anti-collision pillar.
作为优选，所述内筒的中心设有与支撑柱转动连接的支撑辊，所述支撑辊的圆周面上设有若干支撑筋条，相邻两根支撑筋条之间的部位均填充吸能填料。导向辊受到碰撞后，溃缩吸能腔吸能、支撑筋条形变吸能、吸能填料挤压吸能，吸收车辆的冲击力，减小车辆对防撞柱的冲击力，防止车辆撞断防撞柱而冲出护栏外。As a preference, the center of the inner cylinder is provided with a support roller that is rotatably connected to the support column, and a number of support ribs are provided on the peripheral surface of the support roller, and the positions between two adjacent support ribs are filled with energy-absorbing filler. After the guide roller is collided, the collapsed energy-absorbing cavity absorbs energy, the support rib deforms to absorb energy, and the energy-absorbing filler squeezes and absorbs energy to absorb the impact force of the vehicle, reduce the impact force of the vehicle on the anti-collision column, and prevent the vehicle from being broken The anti-collision pole rushed out of the guardrail.
作为优选，相邻两根防撞柱之间的内侧设有缓冲柱，所述缓冲柱的下端设有法兰座，所述法兰座与桥梁两侧的预埋座固定连接，每根支撑柱上的导向辊有两个，支撑柱上位于两个导向辊之间的部位设有左连接臂、右连接臂，所述左连接臂与该支撑柱左侧的缓冲柱的内侧面固定连接，所述右连接臂与该支撑柱右侧的缓冲柱的内侧面固定连接。从内到外依次构建支撑辊、缓冲柱、防撞柱三道防护，逐级缓冲吸能，使得防撞柱受到的冲击力显著减小，进而防止车辆冲出护栏外而坠江。As a preference, a buffer column is provided on the inner side between two adjacent anti-collision columns, and a flange seat is provided at the lower end of the buffer column, and the flange seat is fixedly connected with the embedded seats on both sides of the bridge. There are two guide rollers on the column, and the position between the two guide rollers on the support column is provided with a left connecting arm and a right connecting arm, and the left connecting arm is fixedly connected with the inner surface of the buffer column on the left side of the support column , the right connecting arm is fixedly connected to the inner surface of the buffer column on the right side of the support column. The support roller, the buffer column and the anti-collision column are successively constructed from the inside to the outside to buffer and absorb energy step by step, so that the impact force on the anti-collision column is significantly reduced, thereby preventing the vehicle from rushing out of the guardrail and falling into the river.
作为优选，所述连接板的外侧固定有吸能杆，所述吸能杆的外端穿过缓冲柱，所述缓冲柱呈中空的方管状，所述吸能杆上位于连接板与缓冲柱之间的部位套设有压簧。垂直分力作用在吸能杆上，吸能杆向外移动，压簧压缩吸能。As a preference, an energy-absorbing rod is fixed on the outside of the connecting plate, the outer end of the energy-absorbing rod passes through the buffer column, and the buffer column is in the shape of a hollow square tube. The energy-absorbing rod is located between the connecting plate and the buffer column. A stage clip is sheathed between the positions. The vertical force component acts on the energy-absorbing rod, the energy-absorbing rod moves outward, and the compression spring compresses the energy-absorbing rod.
作为优选，所述压簧的外侧套设有薄壁防护管。薄壁防护管对压簧起到保护作用，防止雨淋日晒导致压簧失效，同时薄壁防护管溃缩后也能缓冲吸能。Preferably, a thin-walled protective tube is sheathed on the outer side of the compression spring. The thin-walled protective tube protects the compression spring and prevents the compression spring from failing due to rain and sun. At the same time, the thin-walled protective tube can also buffer and absorb energy after collapse.
作为优选，所述缓冲柱的外侧设有吸能缸，所述吸能缸的内端通过U形座与缓冲柱的两侧固定连接，所述吸能缸内设有若干叠合设置的碟簧，所述碟簧的中心设有圆柱滑块，所述圆柱滑块的内端设有凸环，所述圆柱滑块的内端中心设有导向孔，所述吸能杆的外端伸入导向孔内，所述吸能缸的底面中心设有避让孔，避让孔内设有防水盖。吸能杆移动一段距离时，压簧先形变吸能，吸能杆继续移动推动圆柱滑块向外移动，圆柱滑块压缩碟簧二次吸能。As a preference, an energy-absorbing cylinder is provided on the outside of the buffer column, and the inner end of the energy-absorbing cylinder is fixedly connected to both sides of the buffer column through a U-shaped seat, and a number of stacked plates are arranged in the energy-absorbing cylinder Spring, the center of the disc spring is provided with a cylindrical slider, the inner end of the cylindrical slider is provided with a convex ring, the center of the inner end of the cylindrical slider is provided with a guide hole, and the outer end of the energy-absorbing rod extends Into the guide hole, the center of the bottom surface of the energy-absorbing cylinder is provided with a avoidance hole, and a waterproof cover is provided in the avoidance hole. When the energy-absorbing rod moves a certain distance, the compression spring first deforms to absorb energy, and the energy-absorbing rod continues to move to push the cylindrical slider to move outward, and the cylindrical slider compresses the disc spring for secondary energy absorption.
作为优选，所述的连接座包括抱箍Ⅰ、抱箍Ⅱ，抱箍Ⅰ、抱箍Ⅱ扣合后通过螺栓连接，所述抱箍Ⅰ的两端延伸形成第一连接条，所述抱箍Ⅱ的两端延伸形成第二连接条，所述第一连接条、第二连接条之间形成连接间隙，所述连接板插入连接间隙内与第一连接条、第二连接条螺栓连接。该种连接便于模块化施工，而且局部损坏后便于局部维修。Preferably, the connecting seat includes hoop I and hoop II, and the hoop I and hoop II are fastened and connected by bolts, and the two ends of the hoop I extend to form a first connecting strip, and the hoop Both ends of II extend to form a second connecting bar, a connecting gap is formed between the first connecting bar and the second connecting bar, and the connecting plate is inserted into the connecting gap to be bolted to the first connecting bar and the second connecting bar. This kind of connection is convenient for modular construction, and it is convenient for local maintenance after local damage.
作为优选，所述横向防护板的横截面呈C形，横向防护板的开口侧的边缘处与缓冲柱的外侧面固定连接。横截面C形的防护板具有一定的弹性形变能力，能够形变吸能，即缓冲柱受到较大的撞击后，通过防护板也能吸收冲击力，减小防撞柱受到的冲击力。Preferably, the cross-section of the transverse protective plate is C-shaped, and the edge of the opening side of the transverse protective plate is fixedly connected with the outer surface of the buffer column. The protective plate with a C-shaped cross section has a certain elastic deformation capacity and can deform and absorb energy. That is, after the buffer column is subjected to a large impact, the impact force can also be absorbed through the protective plate to reduce the impact force on the anti-collision column.
作为优选，所述防撞柱的横截面呈圆形，防撞柱的圆周面上设有沿轴向分布的加强筋。加强筋增加防撞柱本身的刚性强度。Preferably, the cross-section of the anti-collision column is circular, and the circumferential surface of the anti-collision column is provided with reinforcing ribs distributed in the axial direction. The ribs increase the rigidity of the anti-collision column itself.
因此，本发明具有一下有益效果：(1)车辆与桥梁防护栏碰撞后，导向辊能对车辆起到导向作用，使得车辆能够最大限度的继续沿着桥梁边缘行驶，逐渐实现减速停车；(2)从内到外构建三重防护体系，分别为导向辊防护、缓冲柱防护、防撞柱防护，有效的防止车辆冲出桥梁防护栏外而坠江；(3)从内到外构建多级减震、吸能，导向辊自身吸能、吸能杆上的压簧吸能、吸能缸内的碟簧吸能、支撑柱溃缩吸能、防护板吸能，从而使得最外侧防撞柱受到车辆的冲击力显著减小，碰撞后防撞柱不易倾倒，进而防止车辆冲出护栏而坠江。Therefore, the present invention has the following beneficial effects: (1) after the vehicle collides with the bridge guardrail, the guide roller can guide the vehicle, so that the vehicle can continue to drive along the edge of the bridge to the greatest extent, and gradually realize deceleration and parking; ) Construct a triple protection system from the inside to the outside, which are respectively guide roller protection, buffer column protection, and anti-collision column protection, effectively preventing vehicles from rushing out of the bridge guardrail and falling into the river; Shock and energy absorption, the guide roller itself absorbs energy, the pressure spring on the energy-absorbing rod absorbs energy, the disc spring in the energy-absorbing cylinder absorbs energy, the supporting column collapses and absorbs energy, and the protective plate absorbs energy, so that the outermost anti-collision column The impact force of the vehicle is significantly reduced, and the anti-collision column is not easy to dump after the collision, thereby preventing the vehicle from rushing out of the guardrail and falling into the river.
附图说明Description of drawings
图1为本发明的一种结构示意图。Fig. 1 is a kind of structure diagram of the present invention.
图2为图1的俯视图。FIG. 2 is a top view of FIG. 1 .
图3为吸能杆与缓冲柱的连接示意图。Figure 3 is a schematic diagram of the connection between the energy-absorbing rod and the buffer column.
图4为图1的左视图。Fig. 4 is a left side view of Fig. 1 .
图5为导向辊的横截面示意图。Fig. 5 is a schematic cross-sectional view of a guide roller.
图中：桥梁1、防撞柱2、加强筋200、钢构架3、横向防护板4、缓冲柱5、法兰座500、预埋座6、支撑杆7、支撑柱8、导向辊9、外筒90、内筒91、连接筋92、溃缩吸能腔93、支撑辊94、支撑筋条95、吸能填料96、连接座10、抱箍Ⅰ100、抱箍Ⅱ101、第一连接条103、第二连接条102、连接间隙104、连接板11、左连接臂12、右连接臂13、吸能杆14、压簧15、薄壁防护管16、吸能缸17、U形座18、碟簧19、圆柱滑块20、凸环21、导向孔22、避让孔23、防水盖24。In the figure: bridge 1, anti-collision column 2, reinforcing rib 200, steel frame 3, transverse protective plate 4, buffer column 5, flange seat 500, embedded seat 6, support rod 7, support column 8, guide roller 9, Outer cylinder 90, inner cylinder 91, connecting rib 92, collapse energy-absorbing cavity 93, support roller 94, supporting rib 95, energy-absorbing filler 96, connecting seat 10, hoop I100, hoop II101, first connecting bar 103 , the second connecting bar 102, connecting gap 104, connecting plate 11, left connecting arm 12, right connecting arm 13, energy absorbing rod 14, compression spring 15, thin-walled protective tube 16, energy absorbing cylinder 17, U-shaped seat 18, Disc spring 19, cylindrical slide block 20, protruding ring 21, guide hole 22, escape hole 23, waterproof cover 24.
具体实施方式Detailed ways
下面结合附图和具体实施方式对本发明作进一步描述：The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:
如图1、图2和图4所示的一种桥梁防护栏结构，设置在桥梁1的两侧，包括等间距分布的防撞柱2，防撞柱的下端与桥梁两侧的钢构架3固定连接，防撞柱的横截面呈圆形，防撞柱的圆周面上设有沿轴向分布的加强筋200；防撞柱的内侧之间设有横向防护板4，相邻两根防撞柱2之间的内侧设有缓冲柱5，缓冲柱的下端设有法兰座500，法兰座与桥梁两侧的预埋座6固定连接，预埋座埋入桥梁两侧的混凝土中；横向防护板4的横截面呈C形，横向防护板的开口侧的边缘处与缓冲柱的外侧面固定连接，横向防护板与每根防撞柱均通过螺栓连接；防撞柱的两端内侧均固定有支撑杆7，支撑杆的外端之间设有支撑柱8，支撑柱上设有导向辊9，支撑柱的端部设有连接座10，支撑杆的外端与连接座的内侧固定连接，支撑杆的内端与防撞柱固定连接，相邻两个连接座之间通过连接板11固定连接；连接座10包括抱箍Ⅰ100、抱箍Ⅱ101，抱箍Ⅰ、抱箍Ⅱ扣合后通过螺栓连接，抱箍Ⅰ的两端延伸形成第一连接条103，抱箍Ⅱ的两端延伸形成第二连接条102，第一连接条、第二连接条之间形成连接间隙104，连接板插入连接间隙内与第一连接条、第二连接条螺栓连接。A bridge guardrail structure as shown in Figure 1, Figure 2 and Figure 4 is arranged on both sides of the bridge 1, including anti-collision columns 2 distributed at equal intervals, the lower end of the anti-collision columns and the steel frame 3 on both sides of the bridge Fixedly connected, the cross section of the anti-collision column is circular, and the circumferential surface of the anti-collision column is provided with reinforcing ribs 200 distributed along the axial direction; the inner side of the anti-collision column is provided with a transverse protective plate 4, and two adjacent anti-collision columns A buffer column 5 is provided on the inner side between the strike posts 2, and a flange seat 500 is provided at the lower end of the buffer column. The flange seat is fixedly connected with the embedded seats 6 on both sides of the bridge, and the embedded seats are embedded in the concrete on both sides of the bridge. The cross-section of the transverse protective plate 4 is C-shaped, and the edge of the opening side of the transverse protective plate is fixedly connected with the outer surface of the buffer column, and the transverse protective plate and each anti-collision column are connected by bolts; the two ends of the anti-collision column The inner side is all fixed with support rod 7, is provided with support column 8 between the outer ends of support rod, is provided with guide roller 9 on the support column, and the end of support column is provided with connecting seat 10, and the outer end of support bar and connecting seat The inner side is fixedly connected, the inner end of the support rod is fixedly connected to the anti-collision column, and the two adjacent connecting seats are fixedly connected through the connecting plate 11; the connecting seat 10 includes hoop I 100, hoop II 101, hoop I, hoop II After fastening, it is connected by bolts, the two ends of the hoop I extend to form the first connecting strip 103, the two ends of the hoop II extend to form the second connecting strip 102, and a connecting gap 104 is formed between the first connecting strip and the second connecting strip , the connecting plate is inserted into the connecting gap and bolted to the first connecting bar and the second connecting bar.
如图2和5所示，导向辊9包括外筒90、内筒91，外筒与内筒之间设有若干连接筋92，外筒、内筒、连接筋为一体式结构且由工程塑料制成，本实施例中工程塑料采用ABS工程塑料(也叫塑料合金)，连接筋将内筒与外筒之间的空间分隔成若干溃缩吸能腔93；内筒91的中心设有与支撑柱8转动连接的支撑辊94，支撑辊的圆周面上设有若干支撑筋条95，相邻两根支撑筋条之间的部位均填充吸能填料96，本实施例中吸能填料采用EVA颗粒；每根支撑柱上的导向辊有两个，支撑柱上位于两个导向辊之间的部位设有左连接臂12、右连接臂13，所述左连接臂与该支撑柱左侧的缓冲柱的内侧面固定连接，所述右连接臂与该支撑柱右侧的缓冲柱的内侧面固定连接。As shown in Figures 2 and 5, the guide roller 9 includes an outer cylinder 90 and an inner cylinder 91, and several connecting ribs 92 are arranged between the outer cylinder and the inner cylinder. Made, engineering plastics adopts ABS engineering plastics (also called plastic alloy) in the present embodiment, and the space between inner cylinder and outer cylinder is divided into several collapse energy-absorbing chambers 93 by connecting rib; The center of inner cylinder 91 is provided with The support roller 94 connected by the rotation of the support column 8 is provided with a number of support ribs 95 on the circumferential surface of the support roller, and the positions between two adjacent support ribs are filled with energy-absorbing fillers 96. In this embodiment, the energy-absorbing filler adopts EVA particles; there are two guide rollers on each support column, and the position between the two guide rollers on the support column is provided with a left connecting arm 12 and a right connecting arm 13, and the left connecting arm is connected to the left side of the support column. The inner surface of the buffer column is fixedly connected, and the right connecting arm is fixedly connected with the inner surface of the buffer column on the right side of the support column.
如图3所示，连接板11的外侧固定有吸能杆14，吸能杆的外端穿过缓冲柱5，缓冲柱呈中空的方管状，吸能杆上位于连接板与缓冲柱之间的部位套设有压簧15，压簧的外侧套设有薄壁防护管16；缓冲柱的外侧设有吸能缸17，吸能缸的内端通过U形座18与缓冲柱的两侧固定连接，吸能缸内设有若干叠合设置的碟簧19，碟簧的中心设有圆柱滑块20，圆柱滑块的内端设有凸环21，圆柱滑块的内端中心设有导向孔22，吸能杆的外端伸入导向孔内，吸能缸的底面中心设有避让孔23，避让孔内设有防水盖24。As shown in Figure 3, an energy-absorbing rod 14 is fixed on the outside of the connection plate 11, the outer end of the energy-absorbing rod passes through the buffer column 5, the buffer column is in the shape of a hollow square tube, and the energy-absorbing rod is located between the connection plate and the buffer column The position of the compression spring 15 is sleeved, and the outer side of the compression spring is provided with a thin-walled protective tube 16; the outer side of the buffer column is provided with an energy-absorbing cylinder 17, and the inner end of the energy-absorbing cylinder passes through the U-shaped seat 18 and both sides of the buffer column. Fixed connection, the energy-absorbing cylinder is provided with a number of stacked disc springs 19, the center of the disc springs is provided with a cylindrical slider 20, the inner end of the cylindrical slider is provided with a convex ring 21, and the center of the inner end of the cylindrical slider is provided with Guide hole 22, the outer end of energy-absorbing rod stretches in the guide hole, and the bottom surface center of energy-absorbing cylinder is provided with avoidance hole 23, is provided with waterproof cover 24 in the avoidance hole.
结合附图，本发明的原理如下：该种桥梁防护栏从内到外依次构建三重防护体系，分别为导向辊防护体系、缓冲柱防护体系、防撞柱防护体系，三重防护体系之间既独立又存在关联；当车辆与桥梁防护栏发生轻微碰撞时，车辆前端首倾斜先碰撞到导向辊上，车辆倾斜的撞击力分解平行分力、垂直分力，车辆在平行分力的作用下沿着导向辊继续向前移动，垂直分力较小，一部分垂直分力被导向辊吸收，另一份垂直分力则直接被支撑杆抵消；当车辆与桥梁防护栏发生较强的碰撞时，受到直接碰撞的导向辊溃缩形变，支撑杆会溃缩(变形或断裂)吸能，吸能杆向外移动、压簧压缩吸能，从而将垂直撞击力吸收、抵消，车辆在导向辊的作用下压着水平分力方向继续前行；当车辆与桥梁防护栏发生非常强的碰撞时，吸能杆位移增大，进而带动圆柱滑块移动，通过多个叠合的碟簧吸能，若垂直碰撞力进一步增大时，缓冲柱向外倾倒、横向防护板变形吸能，最终使得最外侧防撞柱受到车辆的撞击力显著减小，而且防撞柱自身强度大，下端又直接与桥梁上的钢构架固定，而且防撞柱下端整体浇入混凝土中，经过多重吸能、减震后的车辆难以撞断防撞柱，从而最大限度的防止碰撞桥梁防护栏的车辆冲入护栏坠入江中，减小交通事故带来的人员伤亡。该种桥梁防护栏也可用于盘山公路危险路段的防护以及高架桥的两侧防护。In conjunction with the accompanying drawings, the principle of the present invention is as follows: this kind of bridge guardrail constructs a triple protection system from the inside to the outside, which are respectively the guide roller protection system, the buffer column protection system, and the anti-collision column protection system, and the triple protection systems are independent. There is also a relationship; when the vehicle collides slightly with the bridge guardrail, the front end of the vehicle first tilts and hits the guide roller first, the impact force of the vehicle tilts into parallel component force and vertical component force, and the vehicle moves along the The guide roller continues to move forward, the vertical component force is small, part of the vertical component force is absorbed by the guide roller, and the other vertical component force is directly offset by the support rod; The collided guide roller collapses and deforms, the support rod will collapse (deform or break) to absorb energy, the energy-absorbing rod moves outward, and the compression spring compresses and absorbs energy, thereby absorbing and offsetting the vertical impact force, and the vehicle is under the action of the guide roller Press the direction of the horizontal component force and continue to move forward; when the vehicle collides with the bridge guardrail very strongly, the displacement of the energy-absorbing rod increases, which in turn drives the cylindrical slider to move, and absorbs energy through multiple stacked disc springs. When the collision force is further increased, the buffer column is tilted outward, and the transverse protective plate is deformed to absorb energy, and finally the outermost anti-collision column is significantly reduced by the impact force of the vehicle, and the anti-collision column itself is strong, and the lower end is directly connected to the bridge. The steel frame is fixed, and the lower end of the anti-collision column is poured into the concrete as a whole. After multiple energy absorption and shock absorption, it is difficult for the vehicle to break the anti-collision column, so as to prevent vehicles colliding with the bridge guardrail from rushing into the guardrail and falling into the river. In order to reduce the casualties caused by traffic accidents. This kind of bridge guardrail can also be used for the protection of the dangerous section of the Panshan Highway and the protection of both sides of the viaduct.
以上仅为本发明的具体实施例，但本发明的技术特征并不局限于此。任何以本发明为基础，为解决基本相同的技术问题，实现基本相同的技术效果，所作出的简单变化、等同替换或者修饰等，皆涵盖于本发明的保护范围之中。The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are covered by the protection scope of the present invention.
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| CN113106794A (en) * | 2021-05-26 | 2021-07-13 | 中南大学 | Train derailing rotary anti-collision barrel, derailing collision energy-absorbing protection device and collision energy-absorbing method |
| CN113106794B (en) * | 2021-05-26 | 2022-02-01 | 中南大学 | Train derailing rotary anti-collision barrel, derailing collision energy-absorbing protection device and collision energy-absorbing method |
| CN114645511A (en) * | 2022-03-03 | 2022-06-21 | 郑广元 | Anti-collision guardrail for road and bridge |
| CN114645511B (en) * | 2022-03-03 | 2023-08-25 | 韶关市富伟工程建设有限公司 | Anti-collision guardrail for road and bridge |
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| CN110106784B (en) | 2021-03-05 |
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