CN112942153A - Road safety island and construction method thereof - Google Patents
Road safety island and construction method thereof Download PDFInfo
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- CN112942153A CN112942153A CN202110105773.6A CN202110105773A CN112942153A CN 112942153 A CN112942153 A CN 112942153A CN 202110105773 A CN202110105773 A CN 202110105773A CN 112942153 A CN112942153 A CN 112942153A
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- island
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- road safety
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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
- E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
- E01F13/02—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions free-standing; portable, e.g. for guarding open manholes ; Portable signs or signals specially adapted for fitting to portable barriers
- E01F13/024—Removable barriers with permanently installed base members, e.g. to provide occasional passage
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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
- E01F1/00—Construction of station or like platforms or refuge islands or like islands in traffic areas, e.g. intersection or filling-station islands; Kerbs specially adapted for islands in traffic areas
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Abstract
The application provides a road safety island, which comprises a base part and a protection part, wherein the base part is of an annular frame structure and comprises a plurality of supporting pieces, at least one supporting piece and a plurality of connecting pieces, a first mounting hole extending along the vertical direction is formed in each connecting piece, each supporting piece and each connecting piece are detachably connected with the corresponding supporting piece, each protection part comprises at least one protection island head and a plurality of protection columns, each protection island head is detachably sleeved at the upper end of each supporting piece, and the lower end parts of the protection columns are detachably inserted into the corresponding first mounting holes; the application also provides a construction method of the road safety island. According to the road safety island and the construction method thereof, the supporting piece, the connecting piece, the protective island head and the protective column can be prefabricated in a factory, rapid assembly is achieved on a construction site, and only pits matched with the shape and the size of the base portion need to be dug on a road during construction, so that the technical problems that the existing road safety island is low in construction efficiency and too much construction waste is generated during construction are solved.
Description
Technical Field
The application belongs to the technical field of passive safety protection devices, and particularly relates to a road safety island and a construction method thereof.
Background
In recent years, with the rapid development of economy in China, urban population is increasing, vehicle holding capacity is increasing, urban roads are challenged greatly, and safety islands are used on the urban roads in large quantities in order to improve the passing efficiency of vehicles. The road safety island is a place which is arranged between the two running roads for pedestrians to temporarily stay when crossing the road, and is generally divided into a canalization island and a secondary street crossing island. And a protection device is arranged in a road safety island area, so that the safety of pedestrians in the island can be protected.
At present, the existing road safety island is mainly divided into fence type, column type, stone pier type, combined type, large pier type, marking line type and the like, and the common points are as follows: the safety island has an isolation function and a warning function, and the hit-causing vehicle is prevented from rushing into the safety island by adopting a rigid stopping mode, but the problems that drivers and passengers of the hit-causing vehicle are easily injured by the rigid stopping, the construction efficiency is low, the traffic is obstructed, the construction waste generated during construction is excessive, pedestrians are easily obstructed, and the like exist.
Disclosure of Invention
The application aims to provide a road safety island and a construction method thereof, which comprises but is not limited to solving the technical problems that the existing road safety island is low in construction efficiency and excessive in construction waste generated during construction.
In order to achieve the above object, the present application provides a road safety island, comprising:
the base part is of an annular frame structure and comprises a plurality of supporting parts, at least one supporting part and a plurality of connecting parts, the supporting parts are horizontally arranged, the supporting parts are vertically arranged, first mounting holes extending along the vertical direction are formed in the connecting parts, and the supporting parts and the connecting parts are respectively detachably connected with the supporting parts; and
the protective part comprises at least one protective island head and a plurality of protective columns, the protective island head is detachably sleeved at the upper end of the support piece, and the lower ends of the protective columns are detachably inserted in the first mounting holes;
after the road safety island is installed, the supporting piece, the lower end part of the supporting piece and the connecting piece are buried below the road horizon, and the upper end parts of the protective island head and the protective column are exposed above the road horizon.
Optionally, through holes for bolts to pass through are respectively formed in the two end walls of the supporting member, the lower end portion of the supporting member, and the at least two side walls of the connecting member.
Optionally, the connector comprises:
the top plate is provided with the first mounting hole;
the bottom plate is parallel to the top plate and is arranged at intervals; and
the four side plates are arranged along the circumferential direction, the two opposite ends of each side plate are respectively fixedly connected with the top plate and the bottom plate, and the through holes are formed in the side plates.
Optionally, the base portion comprises:
a plurality of first supporting members for connecting the supporting members and the connecting members or connecting adjacent two of the connecting members; and
a plurality of second supports for detachable connection with the support and/or the first support and/or further second supports;
the two end walls of the first supporting piece, the body of the second supporting piece and the two end walls of the second supporting piece are respectively provided with the through holes.
Optionally, the distance between two adjacent connectors close to one side of the supporting member is smaller than the distance between two adjacent connectors far from one side of the supporting member.
Optionally, the protective island head comprises:
the energy absorption element is a multi-cell energy absorption material piece or a porous solid material piece, and a second mounting hole for the support piece to be inserted is formed in the middle of the energy absorption element.
Optionally, the protective island head further comprises:
the first elastic body is of a cylindrical structure and is sleeved on the outer side of the energy absorption element; and/or
And the first skin is wrapped on the outer side of the energy-absorbing element.
Optionally, the guard post comprises:
the column body is a hollow round pipe piece, and concrete is filled in the column body;
the second elastic body is of a cylindrical structure and is rotatably sleeved at the upper end part of the column body; and
the cover body is detachably connected to the top end of the column body and used for limiting the second elastic body to be separated from the column body.
Optionally, the protective post further comprises:
the positioning piece is sleeved in the middle of the column body and used for limiting the installation height of the second elastic body; and/or
And the second skin is wrapped on the outer side of the second elastic body.
The application also provides a construction method of the road safety island, which comprises the following steps:
s1, assembling the supporting piece, the supporting piece and the connecting piece into a base part;
s2, sleeving the protective island head on the upper end part of the support and inserting the protective column into the first mounting hole of the connector;
s3, digging out a pit with a horizontal projection shape matched with that of the base part and a depth larger than the height of the connecting piece between the two vehicle lanes of the road;
s4, placing the foundation part into the pit;
and S5, backfilling the soil excavated in the step S3 into the pit, and tamping the road surface.
The application provides a road safety island and a construction method thereof, which has the beneficial effects that: the supporting member, the connecting member, the protective island head and the protective column can be prefabricated in a factory, then rapid assembly is realized on a construction site, during construction, only pits matched with the shape and the size of the foundation part need to be dug on a road, pits with various sizes and quantities do not need to be dug at multiple positions according to the design of the protective island head and the protective column, and soil dug from the road is finally used for backfilling the pits without pouring concrete on site, so that the quantity of auxiliary facilities in construction engineering is effectively reduced, the technical problems of low construction efficiency of the conventional road safety island and excessive construction waste generated during construction are solved, the engineering cost of the road safety island is reduced, and the engineering efficiency of the road safety island is improved; the supporting member, the connecting member, the protective island head and the protective column are in standard modular structural forms and are all prefabricated structures, the construction and maintenance period is not needed, only damaged parts need to be replaced after the road safety island is damaged due to a collision accident, and the maintenance period is short, so that the obstruction of the maintenance of the road safety island to traffic is reduced to the maximum extent; and because the foundation portion has adopted whole annular frame structural style, reserve the installation interface in the position of installation protection island head and protection post for protection island head, protection post and foundation portion can be connected for wholly effectively, thereby provide the impact resistance jointly, can solve the island head of independent foundation design or the collision avoidance post and topple easily and endanger pedestrian's safety problem in the island.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic perspective view of a road safety island according to an embodiment of the present application;
fig. 2 is a schematic perspective view of a road safety island according to another embodiment of the present application;
FIG. 3 is a schematic front view of the road safety island of FIG. 1;
FIG. 4 is a schematic front view of the road safety island of FIG. 2;
fig. 5 is a partially exploded schematic view of a road safety island provided in the embodiment of the present application;
FIG. 6 is a schematic top view of the road safety island of FIG. 1;
FIG. 7 is a schematic longitudinal section of a protective island head provided in accordance with an embodiment of the present application;
fig. 8 is a schematic perspective view of a protective island head provided in an embodiment of the present application;
FIG. 9 is a schematic longitudinal cross-sectional view of a protective column provided in accordance with an embodiment of the present application;
fig. 10 is a schematic view of an operating state of a road safety island construction method according to an embodiment of the present application;
fig. 11 is a flowchart of a method for constructing a road safety island according to an embodiment of the present application.
Wherein, in the figures, the respective reference numerals:
1-road safety island, 2-road, 10-foundation part, 20-protection part, 30-concrete, 11-bearing part, 12-bearing part, 13-connecting part, 14-reinforcing part, 21-protection island head, 22-protection column, 100-through hole, 111-first bearing part, 112-second bearing part, 130-first mounting hole, 131-top plate, 132-bottom plate, 133-side plate, 200-pit, 210-second mounting hole, 211-energy absorbing element, 212-first skin, 213-first elastomer, 221-column, 222-second elastomer, 223-cover body, 224-second skin, 225-positioning part.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application more clearly apparent, the present application is described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It should be noted that: when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience of description only and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and therefore are not to be construed as limiting the patent, the particular meaning of which terms will be understood by those skilled in the art as appropriate. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The term "plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 to 5, a road safety island 1 provided by the present application includes a base portion 10 and a protective portion 20, wherein the base portion 10 is an annular frame structure, the base portion 10 includes a plurality of supporting members 11, at least one supporting member 12 and a plurality of connecting members 13, wherein the supporting members 11 are horizontally disposed, the supporting members 12 are vertically disposed, the connecting members 13 are provided with first mounting holes 130 extending vertically, the supporting members 12 and the connecting members 13 are detachably connected to the supporting members 11, that is, when the road safety island 1 is required, the base portion 10 can be assembled by the supporting members 11, the supporting members 12 and the connecting members 13; the protection part 20 comprises at least one protection island head 21 and a plurality of protection columns 22, wherein the protection island head 21 is detachably sleeved at the upper end part of the support 12, the lower end parts of the protection columns 22 are detachably inserted into the first mounting holes 130 of the connecting pieces 13, namely, the protection island heads 21 are in one-to-one fit with the support 12, and the protection columns 22 are in one-to-one fit with the connecting pieces 13; after the road safety island 1 is installed, the supporting member 11, the lower end of the supporting member 12 and the connecting member 13 are buried below the road horizon, and the upper ends of the protection island head 21 and the protection column 22 are exposed above the road horizon. It can be understood that the supporting member 11, the supporting member 12, the connecting member 13, the protective island head 21 and the protective column 22 can be made into standard members with various shapes and sizes, and during actual construction, the supporting member 11, the supporting member 12, the connecting member 13, the protective island head 21 and the protective column 22 with suitable shapes and sizes are selected according to the actual situation of the road, so that the road safety island 1 meeting the actual application requirements can be assembled.
In particular, the support 11, the support 12 and the connection 13 may be made of steel; as shown in fig. 1, in one embodiment of the present application, the road safety island 1 is a trenched island, which is used for being installed at a turn of a T-shaped intersection or a crossroad and is composed of a base 10, at least two protective island heads 21 and three sets of protective columns 22 arranged at the edge of the trenched island at intervals; in another embodiment of the present application, as shown in fig. 2, the road safety island 1 is a secondary street-crossing island, is installed between two parallel lanes, and is composed of a base 10, at least one protective island head 21, and two sets of protective columns 22 arranged at two opposite long sides of the secondary street-crossing island at intervals.
When a road safety island 1 needs to be arranged on a road 2, please refer to fig. 1 to 4, 10 and 11 together, the following steps can be adopted for construction:
s1, assembling the support member 11, the support member 12, and the connection member 13 into the base portion 10;
s2, sleeving the protection island head 21 on the upper end of the support 12 and inserting the protection column 22 into the first mounting hole 130 of the connecting piece 13;
s3, digging out a pit 200 between the two roadways of the road 2, and matching the horizontal projection shape of the pit 200 with the horizontal projection shape of the base part 10, wherein the depth of the pit 200 is larger than the height of the connecting piece 13;
s4, placing the foundation part 10 into the pit 200;
and S5, backfilling the soil excavated in the step S3 into the pit 200, and tamping the road surface.
It is understood that the numbers in S1, S2, … … and S5 do not represent the operation sequence, and in the present construction method, the operation sequence from step S1 to step S4 can be determined according to specific situations, and if the road 2 has a large working area and the pedestrian is ensured to be parked and safe to pass, the step S1 can be performed first: assembling the base unit 10 at the work site, and performing step S3 while assembling the base unit 10: pit 200 is dug in road 2, and then step S4 is performed: the base part 10 is placed in the recess 200, and then the step S2 is performed: sleeving the protection island head 21 on the upper end part of the support 12 and inserting the protection column 22 into the first mounting hole 130 of the connecting piece 13; if the lane of the road 2 is narrow and the working area is limited, the step S3 may be performed first: the pit 200 is dug in the road 2, and then the entire road security island 1, which is assembled at the factory (i.e., steps S1 and S2 are completed at the factory), is transported to the destination, and then step S4 is performed: the base part 10 is placed in the recess 200.
The road safety island 1 provided by the application is assembled by the base part 10 and the protection part 20, the supporting part 11, the supporting part 12, the connecting part 13, the protection island head 21 and the protection post 22 can be prefabricated in a factory, then, the rapid assembly is realized on the construction site, during the construction, only the pits 200 matched with the shape and the size of the foundation part 10 need to be dug on the road 2, the pits with various sizes and quantities do not need to be dug at a plurality of positions according to the design of the protective island heads 21 and the protective columns 22, and the soil dug from the road 2 is finally used for backfilling the pit 200 without pouring concrete on site, thereby effectively reducing the number of auxiliary facilities in the construction engineering, therefore, the technical problems that the existing road safety island is low in construction efficiency and excessive in construction waste generated during construction are solved, the engineering cost of the road safety island 1 is reduced, and the engineering efficiency of the road safety island 1 is improved; in addition, the supporting member 11, the supporting member 12, the connecting member 13, the protective island head 21 and the protective column 22 adopt a standard modular structure form and are all prefabricated structures, the construction and maintenance period is not needed, only damaged parts need to be replaced after the road safety island 1 is damaged due to a collision accident, and the maintenance period is short, so that the obstruction of the maintenance of the road safety island 1 to traffic passage is reduced to the maximum extent; and because foundation portion 10 has adopted the form of whole annular frame structure, reserves the installation interface in the position of installation protection island head 21 and protection post 22 for protection island head 21, protection post 22 can be connected as an organic whole with foundation portion 10 effectively, thereby provide the impact resistance jointly, can solve the island head of independent foundation design or the collision avoidance post and overturn easily to endanger pedestrian's safety problem in the island.
Optionally, referring to fig. 5, as a specific embodiment of the road safety island provided by the present application, through holes 100 for bolts to pass through are respectively formed on two end walls of the supporting member 11, a lower end portion of the supporting member 12, and at least two side walls of the connecting member 13. Specifically, the number of the through holes 100 on both end walls of the supporting member 11, the lower end portion of the supporting member 12 and at least two side walls of the connecting member 13 may be one or more, the screw-threaded end of the bolt may be screwed with the nut after passing through the through hole 100 of one of the end walls of the supporting member 11 and the through hole 100 of the lower end portion of the supporting member 12 in order to connect the supporting member 11 and the supporting member 12 together, or the screw-threaded end of the bolt may be screwed with the nut after passing through the through hole 100 of one of the end walls of the supporting member 11 and the through hole 100 of one of the side walls of the connecting member 13 in order to connect the supporting. That is, the coupling of the supporting member 11 and the supporting member 12 or the coupling of the supporting member 11 and the coupling member 13 can be rapidly performed through the through-hole 100.
Optionally, referring to fig. 5, as a specific embodiment of the road safety island provided by the present application, the connecting member 13 includes a top plate 131, a bottom plate 132, and four side plates 133, wherein a first mounting hole 130 is formed on the top plate 131, the bottom plate 132 is parallel to the top plate 131 and is disposed at an interval, the four side plates 133 are disposed along a circumferential direction, two opposite ends of each side plate 133 are respectively fixedly connected to the top plate 131 and the bottom plate 132, and a through hole 100 is formed in each side plate 133. Specifically, four side plates 133 are arranged between the top plate 131 and the bottom plate 132 at equal intervals around the center line of the first mounting hole 130, the upper end and the lower end of each side plate 133 are respectively welded to one edge of the top plate 131 and one edge of the bottom plate 132, one or more through holes 100 are formed in each side plate 133, a gap is left between two adjacent side plates 133, and the width of the gap is enough for a wrench to pass through, so that the mounting of a bolt or a nut is facilitated; the bottom plate 132 may be provided with a first mounting hole 130 or a positioning groove, and the first mounting hole 130 or the positioning groove of the bottom plate 132 corresponds to and is coaxial with the first mounting hole 130 of the top plate 131, which is beneficial to ensuring that the protection column 22 is in a vertical state after being mounted.
Optionally, referring to fig. 1 and fig. 6, as an embodiment of the road safety island provided by the present application, the foundation portion 10 includes a plurality of first supporting members 111 and a plurality of second supporting members 112, the plurality of first supporting members 111 are used for connecting the supporting members 12 and the connecting members 13 or connecting two adjacent connecting members 13, and the plurality of second supporting members 112 are used for being detachably connected with the supporting members 12 and/or the first supporting members 111 and/or another second supporting members 112; through holes 100 are opened in both end walls of the first support 111, the body of the second support 112, and both end walls of the second support 112, respectively. Specifically, the number of the through holes 100 on the two end walls of the first support 111 and the two end walls of the second support 112 may be one or more, the number of the through holes 100 on the body of the second support 112 is plural, and the plural through holes 100 are arranged at intervals on the body of the second support 112, two support members 12, plural connection members 13, plural first supports 111, and three second supports 112 may be assembled to the base 10 of the trenched island, on the base 10 of the trenched island, the three second supports 112 are connected end to end in sequence to form a triangular frame structure, and the plural first support members 111 arranged at intervals in the length direction of the second support members 112 are vertically connected to the body of each second support member 112, one end of the first support member 111 remote from the second support member 112 is fixedly connected to the connection member 13, the adjacent two connection members 13 are connected by one first support member 111, the two supporting members 12 are respectively connected to two corners of the base 10, where the volumes of the two supporting members 12 are different, the supporting member 12 with a larger volume is respectively and fixedly connected to the two first supporting members 111 and the second supporting member 112, the supporting member 12 with a smaller volume is respectively and fixedly connected to the two first supporting members 111, the protective island 21 sleeved on the supporting member 12 with a larger volume is a sector-shaped column, the protective island 21 sleeved on the supporting member 12 with a smaller volume is a cylinder, in order to ensure the installation firmness of the protective island 21 with a sector-shaped cross section, the base 10 further includes three reinforcing members 14, and the three reinforcing members 14 are respectively connected between the protective island 21 with a sector-shaped cross section and the two first supporting members 111 and between the protective island 21 with a sector-shaped cross section and the second supporting member 112.
Alternatively, referring to fig. 1 and fig. 6, as an embodiment of the road safety island provided by the present application, the distance between two adjacent connecting members 13 near the supporting member 12 is smaller than the distance between two adjacent connecting members 13 far from the supporting member 12. That is, if the spacing between two adjacent connectors 13 of the plurality of connectors 13 distributed close to the support 12 is s1 and the spacing between two adjacent connectors 13 of the plurality of connectors 13 distributed away from the support 12 is s2, then s1< s2, since the fender post 22 on the side close to the fender head 21 is more likely to receive the impact of the hit vehicle first, and the smaller the spacing between two adjacent connectors 13, the denser the arrangement of the fender post 22, the more effectively the distribution of the energy of the crash generated by the impact, and thus the better the protection of the pedestrian in the road island 1.
Optionally, referring to fig. 7 and 8, as an embodiment of the road safety island provided by the present application, the protective island head 21 includes an energy absorbing element 211, the energy absorbing element 211 is a multi-cell energy absorbing material or a porous solid material, and a second mounting hole 210 for inserting the support 12 is opened in the middle of the energy absorbing element 211. In particular, the energy absorber element 211 can be a multi-cell energy absorbing material such as: aluminum honeycomb, etc., or porous solid material pieces such as: foamed aluminum and the like have larger compression stroke, when being impacted by a hit-cause vehicle, the energy-absorbing element 211 can replace the hit-cause vehicle to generate sufficient plastic deformation, and the damage energy generated by the impact is converted into self plastic deformation energy, so that the hit-cause vehicle is ensured to stop before invading the road safety island 1, meanwhile, rigid stop is avoided, the extrusion of the impact on the living space inside the hit-cause vehicle is effectively reduced, and the personal safety of drivers and passengers is ensured; and because the support 12 is preferably a large-diameter high-strength steel pipe, and the steel pipe is filled with high-strength concrete, the protective island head 21 can resist the high-speed frontal impact of the hit-and-run vehicle under the support of the support 12, and the impact resistance of the road safety island 1 is improved.
Optionally, referring to fig. 7 and fig. 8, as an embodiment of the road safety island provided by the present application, the protective island head 21 further includes a first elastic body 213 and/or a first skin 212, where the first elastic body 213 is a cylindrical structure and is sleeved on an outer side of the energy absorbing element 211; the first skin 212 is wrapped around the outside of the energy absorber element 211. Specifically, the first elastic body 213 is preferably a high-elasticity polymer composite material, is cylindrical, is sleeved on the outer wall of the energy-absorbing element 211, and can absorb the destructive energy generated by impact through elastic deformation of the first elastic body 213, so that the energy-absorbing and buffering performance of the protection island head 21 is further improved, and under the impact with low strength, the first elastic body 213 can independently complete energy absorption without the participation of the energy-absorbing element 211, so that the replacement frequency of the energy-absorbing element 211 can be reduced, and the maintenance cost of the protection island head 21 is effectively reduced; the first skin 212 is preferably a steel sleeve or an elastic polymer composite material sleeve, and is wrapped on the outer wall of the energy absorbing element 211 or the outer wall of the first elastic body 213, so that the energy absorbing element 211 can be prevented from being eroded by dust and rainwater, the service life of the protective island head 21 can be effectively prolonged, the absorption of destructive energy can be participated, the energy absorbing and buffering performance of the protective island head 21 can be further improved, and the aesthetic feeling of the appearance of the protective island head 21 can be further improved.
Optionally, referring to fig. 9, as an embodiment of the road safety island provided by the present application, the protection column 22 includes a cylinder 221, a second elastic body 222, and a cover 223, where the cylinder 221 is a hollow circular tube, concrete is filled in the cylinder 221, the second elastic body 222 is a cylindrical structure, the second elastic body 222 is rotatably sleeved on an upper end of the cylinder 221, and the cover 223 is detachably connected to a top end of the cylinder 221 and is used for limiting the second elastic body 222 from being separated from the cylinder 221. Specifically, the column 221 is preferably a high-strength steel pipe, the inside of the steel pipe is filled with high-strength concrete, the lower end part of the column 221 is provided with a through hole 100, and a bolt penetrates through the through hole 100 and can be fastened and connected with the connecting piece 13, so that the underground part of the whole road safety island 1 is connected into a whole, the impact resistance of the protective column 22 is improved, and the protective column 22 can be prevented from overturning into the island to threaten the safety of pedestrians; the second elastic member 222 is preferably a cylindrical, high-elasticity polymer composite member, the inner diameter of which is larger than the outer diameter of the pillar 221 and can rotate around the pillar 221, when the accident vehicle impacts the protective pillar 21, the second elastic member 222 can rotate around the pillar 221 while undergoing compression elastic deformation, so that the transmission direction of the impact force and the displacement direction of the accident vehicle are changed, the accident vehicle is guided to slide away along the outer side of the road safety island 1, most of energy generated by the impact force is taken away, the energy exchange in the 'vehicle-island' impact process is greatly reduced, and the accident vehicle can be effectively prevented from invading into the road safety island 1; the cover 223 has a circular cross section and an outer diameter larger than an inner diameter of the second elastic body 222, and the cover 223 is detachably connected to the top end of the column 221, so that the second elastic body 222 can be effectively prevented from being separated from the column 221 during the process of receiving the impact of the hit-and-run vehicle.
Optionally, referring to fig. 9, as an embodiment of the road safety island provided by the present application, the guard post 22 further includes a positioning member 225 and/or a second skin 224, wherein the positioning member 225 is sleeved on a middle portion of the post body 221 for defining an installation height of the second elastic body 222, and the second skin 224 is wrapped on an outer side of the second elastic body 222. Specifically, the positioning member 225 may be welded or bolted to the column 221, and the positioning member 225 is fixed to a portion of the column 221 exposed above the road horizon to support the second elastic body 222 to define the installation height of the second elastic body 222; the second skin 224 is preferably a steel cylinder or an elastic polymer composite material cylinder, and is wrapped on the outer wall of the second elastic body 222, so that the second elastic body 222 can be prevented from being eroded by dust and rainwater, the service life of the protective column 22 is effectively prolonged, the absorption of energy can be damaged, the energy absorption and buffering performance of the protective column 22 is further improved, and the aesthetic feeling of the appearance of the protective column 22 can be improved.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A road safety island, characterized in that: the method comprises the following steps:
the base part is of an annular frame structure and comprises a plurality of supporting parts, at least one supporting part and a plurality of connecting parts, the supporting parts are horizontally arranged, the supporting parts are vertically arranged, first mounting holes extending along the vertical direction are formed in the connecting parts, and the supporting parts and the connecting parts are respectively detachably connected with the supporting parts; and
the protective part comprises at least one protective island head and a plurality of protective columns, the protective island head is detachably sleeved at the upper end of the support piece, and the lower ends of the protective columns are detachably inserted in the first mounting holes;
after the road safety island is installed, the supporting piece, the lower end part of the supporting piece and the connecting piece are buried below the road horizon, and the upper end parts of the protective island head and the protective column are exposed above the road horizon.
2. The road safety island according to claim 1, wherein: through holes for bolts to penetrate through are respectively formed in the two end walls of the supporting piece, the lower end part of the supporting piece and the at least two side walls of the connecting piece.
3. The road safety island according to claim 2, wherein: the connector includes:
the top plate is provided with the first mounting hole;
the bottom plate is parallel to the top plate and is arranged at intervals; and
the four side plates are arranged along the circumferential direction, the two opposite ends of each side plate are respectively fixedly connected with the top plate and the bottom plate, and the through holes are formed in the side plates.
4. The road safety island according to claim 2, wherein: the base portion includes:
a plurality of first supporting members for connecting the supporting members and the connecting members or connecting adjacent two of the connecting members; and
a plurality of second supports for detachable connection with the support and/or the first support and/or further second supports;
the two end walls of the first supporting piece, the body of the second supporting piece and the two end walls of the second supporting piece are respectively provided with the through holes.
5. The road safety island according to claim 1, wherein: the distance between two adjacent connecting pieces close to one side of the supporting piece is smaller than the distance between two adjacent connecting pieces far away from one side of the supporting piece.
6. Road safety island according to any one of claims 1 to 5, characterized in that: the protective island head comprises:
the energy absorption element is a multi-cell energy absorption material piece or a porous solid material piece, and a second mounting hole for the support piece to be inserted is formed in the middle of the energy absorption element.
7. The road safety island according to claim 6, wherein: the protective island head further comprises:
the first elastic body is of a cylindrical structure and is sleeved on the outer side of the energy absorption element; and/or
And the first skin is wrapped on the outer side of the energy-absorbing element.
8. The road safety island according to claim 6, wherein: the guard post includes:
the column body is a hollow round pipe piece, and concrete is filled in the column body;
the second elastic body is of a cylindrical structure and is rotatably sleeved at the upper end part of the column body; and
the cover body is detachably connected to the top end of the column body and used for limiting the second elastic body to be separated from the column body.
9. The road safety island according to claim 8, wherein: the protective column further comprises:
the positioning piece is sleeved in the middle of the column body and used for limiting the installation height of the second elastic body; and/or
And the second skin is wrapped on the outer side of the second elastic body.
10. A construction method of a road safety island is characterized by comprising the following steps: the method comprises the following steps:
s1, assembling the supporting piece, the supporting piece and the connecting piece into a base part;
s2, sleeving the protective island head on the upper end part of the support and inserting the protective column into the first mounting hole of the connector;
s3, digging out a pit with a horizontal projection shape matched with that of the base part and a depth larger than the height of the connecting piece between the two vehicle lanes of the road;
s4, placing the foundation part into the pit;
and S5, backfilling the soil excavated in the step S3 into the pit, and tamping the road surface.
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| CN202110105773.6A CN112942153A (en) | 2021-01-26 | 2021-01-26 | Road safety island and construction method thereof |
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| CN202110105773.6A CN112942153A (en) | 2021-01-26 | 2021-01-26 | Road safety island and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114481915A (en) * | 2022-01-26 | 2022-05-13 | 合肥工业大学 | Daily collision recovery type anti-collision column and construction method thereof |
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| CN114481915A (en) * | 2022-01-26 | 2022-05-13 | 合肥工业大学 | Daily collision recovery type anti-collision column and construction method thereof |
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