CN103422409B - A kind of long and steep downgrade energy dissipating deceleration road surface and construction technology thereof - Google Patents
A kind of long and steep downgrade energy dissipating deceleration road surface and construction technology thereof Download PDFInfo
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- CN103422409B CN103422409B CN201310304443.5A CN201310304443A CN103422409B CN 103422409 B CN103422409 B CN 103422409B CN 201310304443 A CN201310304443 A CN 201310304443A CN 103422409 B CN103422409 B CN 103422409B
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- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 2
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Abstract
The invention discloses a kind of long and steep downgrade energy dissipating deceleration road surface and construction technology thereof.By direction of traffic, described energy dissipating deceleration road surface arranges that three thermoplasticity protrusion-types perpendicular to direction of traffic shake decelerating area II that I, one to three, decelerating area that graticules form forms perpendicular to the hump formula bituminous concrete base deceleration strip of direction of traffic and the decelerating area III that one to two sections of deceleration railway spikes are formed successively.Described energy dissipating deceleration construction Craft, mainly comprises the steps such as road surface pretreatment, installation road section drawn line, deceleration facilities installation and maintenance.In the present invention, the effect reminding driver to slow down mainly is played in decelerating area I; Forced deceleration effect is mainly played in decelerating area II and III, the fatigue on Driver Vision can be prevented with numb simultaneously, thus accelerate immediately again after preventing driver from just slowing down, reach the object of long distance control speed, and this deceleration road surface is to vehicle fanout free region, slowing down, it is durable in use to arrange, and the construction technology provided is simple, with low cost.
Description
Technical field
The invention belongs to means of transportation technical field, provide a kind of long and steep downgrade energy dissipating deceleration road surface and construction technology thereof.
Background technology
Along with the fast development of communication, China's expressway construction level constantly promotes, and express highway pavement quality is also become better and better, so the road speed on speedway is also more and more faster, but traffic accident also gets more and more.Particularly mountainous area highway, due to the restriction of own geographical condition, speedway creates a lot of complicated driving route in process of construction, and the complexity of mountain area weather, brings huge hidden danger to express way driving safety.Mountainous area highway often containing long slope and long and steep downgrade section, due to the brake failure that excessive velocities and frequently braking cause, causes frequent accidents to occur, causes serious personal injury and property loss.This type of traffic accident is often sufferd heavy losses, and therefore how to realize efficient, the safe function of speedway, one of study hotspot becoming relevant departments.
Correlative study shows the raising along with running velocity, and traffic accident incidence and severity of injuries also increase thereupon, the order of severity of accident casualty and the linear trend increased progressively of speed.Therefore being controlled by running velocity in the scope of reasonable benefit/risk, is improve one of the most effective approach of road safety level.Two kinds of deceleration facilities that thermoplastic vibrations graticule and speed-reducing rubber Dai Shi China speedway are commonly used, but the dynamics of thermoplastic vibrations graticule forced deceleration is inadequate, not too obvious for the truck speed limit effect on speedway; Speed-reducing rubber band has certain control effects to the speed of a motor vehicle, but its poor durability, not only destroy road surface during installation and the injury of hold-down screw to vehicle that carry over after scrapping larger.
Therefore, invent a kind of possess good endurance, control effect good, be easy to construct and the long and steep downgrade energy dissipating deceleration road surface of maintenance and construction technology thereof, for improving the effective utilization of traffic slow-down facility and the safety of long and steep downgrade road is significant and actual demand.
Summary of the invention
For the deficiency that above-mentioned prior art exists, the object of the present invention is to provide a kind of long and steep downgrade energy dissipating deceleration road surface and construction technology thereof, it can not only remind driver to slow down, and the effect forcing driver to be slowed down can be played, also the fatigue on Driver Vision can be prevented with numb simultaneously, thus accelerate immediately again after preventing driver from just slowing down, reach the object of long-time long distance control speed.
To achieve these goals, the technical solution used in the present invention is: a kind of long and steep downgrade energy dissipating deceleration road surface, is characterized in that: arrange that three shake by thermoplasticity protrusion-type the decelerating area III that I, one to three, decelerating area forming of graticule forms perpendicular to the decelerating area II be made up of hump formula bituminous concrete base deceleration strip and one to two sections of deceleration railway spikes of direction of traffic perpendicular to direction of traffic successively by direction of traffic.
By technique scheme, described decelerating area I is 10-15m with decelerating area II spacing, and described decelerating area II is 10-25m with decelerating area III spacing.
By technique scheme, described thermoplasticity protrusion-type vibrations graticule is banded, and be 300-600mm along the longitudinal width of direction of traffic every bar thermoplasticity protrusion-type vibrations graticule, transverse width is width of roadway, projection block height is 3-6mm, and adjacent two thermoplasticity protrusion-types vibrations graticule is spaced apart 4-8m.
By technique scheme, adjacent two hump formula bituminous concrete base deceleration strip spacing are 15-25m, be 20-35mm along direction of traffic Article 1 hump formula bituminous concrete base deceleration strip height, longitudinal width is 50-80mm, Article 2 hump formula bituminous concrete base deceleration strip height is 30-40mm, longitudinal width is 50-80mm, Article 3 hump formula bituminous concrete base deceleration strip height is 30-40mm, longitudinal width is 50-80mm, and the transverse width of every bar hump formula bituminous concrete base deceleration strip is the transverse width on road surface.
By technique scheme, described hump formula bituminous concrete base deceleration strip is banded, and its cross section is the semiellipse type of band rounded corner, scribbles heat molten type reflecting coating at hump formula bituminous concrete base deceleration strip upper surface.
By technique scheme, described heat molten type reflecting coating is sprayed along interval, width of roadway direction by yellowish-white two kinds of colors, often plants reflecting coating spraying length 0.4-0.6m along width of roadway direction, and spraying width is the width of hump formula bituminous concrete base deceleration strip.
By technique scheme, decelerating area III is made up of one to two sections of bituminous concrete base deceleration railway spikes, every section of bituminous concrete base deceleration railway spike is made up of the deceleration railway spike arranged perpendicular to direction of traffic more, the segment length of every section of bituminous concrete base deceleration railway spike is 20-30m, and the spacing of adjacent two sections of bituminous concrete base deceleration railway spikes is 10-20m.
By technique scheme, in described decelerating area III, often adjacent two row's deceleration railway spikes adopt Heterogeneous Permutation, and adjacent two row's deceleration railway spike spacing 0.45-0.65m, often arrange adjacent two railway spike spacing 0.35-0.5m.
By technique scheme, the deceleration railway spike in described decelerating area III is spherical arc shape railway spike, and its bottom surface circular diameter is 0.1-0.12m, and height is 0.03-0.04m.
The construction technology on above-mentioned long and steep downgrade energy dissipating deceleration road surface, is characterized in that it comprises following steps:
1) road surface pretreatment: needed in decelerating area I and decelerating area III position of constructing to clean, ensure that road surface does not have impurity and dust, and road surface is dry, after adopting compressed air to blow off the railway spike paste position in decelerating area III, clean down with acetone again. larger recess railway spike glue is repaired smooth;
2) in construction section setting-out: finish each decelerating area arrangement diagram as mark with line tool on construction section;
3) construction of each decelerating area:
The construction of decelerating area I: the thermoplasticity protrusion-type vibrations graticule graticule line drawing machine in decelerating area I carries out setting-out.
The construction of decelerating area II: road-surface milling is gone out the thickness of setting by the cloth tagging of the deceleration strip of the decelerating area II first using milling machine to finish in step (2), with sander, the road surface after milling is polished flat, then remove residue and dust, finally with mulseal, prefabricated hump formula bituminous concrete base deceleration strip is carried out boning, installing; Install after the time of setting, then adopt graticule line drawing machine to carry out the spraying of heat molten type reflecting coating.
The construction of decelerating area III: prepare a certain amount of epoxy adhesive, road surface is spread upon equably with greasy cutter, again deceleration railway spike is pasted onto according to the position of setting and smears epoxy adhesive place, then by the place's compacting of deceleration railway spike, glue is just extruded from railway spike periphery.
4) maintenance of each decelerating area: after step (3) completes, forbid moving above-mentioned deceleration facilities, and by its maintenance 3-5 hour, can be open to traffic, suitably can increase the curing time of 2-3 hour for overcast and rainy, low temperature bad weather, and rain drop erosion can be prevented with covered rearing with plastic film.
Compared with prior art, the beneficial effect acquired by the present invention is:
1, in the present invention, the effect reminding driver to slow down mainly is played in decelerating area I, also has certain control effect to dilly simultaneously; Forced deceleration effect is mainly played in decelerating area II and III, adopts these two kinds of deceleration facilities that the fatigue on Driver Vision can be prevented with numb simultaneously, thus accelerates immediately again after preventing driver from just slowing down, and reaches the object of long-time long distance control speed.
2, the speed of a motor vehicle can be reduced to 33-58% by deceleration road surface of the present invention, thus serve good slowing effect, improve the safety of driving.
3, the present invention does not hinder car, and preparation is with easy for installation, and cost is cheap, durable in use.
4. the present invention is provided with dissimilar decelerating area, and not only visual effect is remarkable, and driver's vibratory sensation is strong, and driver, must forced deceleration in order to ensure comfortableness and safety.
5. in the present invention, hump formula bituminous concrete base deceleration strip and bituminous concrete base deceleration railway spike all adopt asphalt concrete material to make, and have certain plasticity and pliability, minimum to vehicle damage.
6. the deceleration facilities in the present invention adds the friction on vehicle and ground, can offset the kinetic energy of a part of vehicle, plays the effect of vehicle self reduction of speed.
7, the deceleration railway spike in decelerating area III adopts the mode of Heterogeneous Permutation, and that can effectively avoid driver to have a mind to hides deceleration railway spike and suddenly beat steering wheel, causes the problem of direction sideslip.
Accompanying drawing explanation
Fig. 1 is the general arrangement schematic of an embodiment on long and steep downgrade energy dissipating deceleration road surface provided by the invention.
Fig. 2 is the cross sectional representation of every bar thermoplasticity protrusion-type vibrations graticule in the decelerating area I in Fig. 1.
Fig. 3 is the cross sectional representation of hump formula bituminous concrete base deceleration strip in the decelerating area II in Fig. 1.
Fig. 4 is the arrangement diagram of railway spike of slowing down in decelerating area III.
Fig. 5 is the cross sectional representation after the deceleration railway spike at A place in Fig. 4 amplifies.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
Embodiment 1
Fig. 1 is the general arrangement schematic of first embodiment provided by the invention, as shown in Figure 1, by direction of traffic, long and steep downgrade energy dissipating deceleration road surface arranges that three thermoplasticity protrusion-types perpendicular to direction of traffic shake the decelerating area II that graticules form I, three, decelerating area is formed perpendicular to the hump formula bituminous concrete base deceleration strip of direction of traffic and the decelerating area III be made up of two sections of bituminous concrete base deceleration railway spikes successively.Wherein, long and steep downgrade road surface refers to sustained grade more than 6 kilometers, the descending section of average gradient more than 3%.
Wherein, the interval L of decelerating area I and decelerating area II
1for 10m, the interval L of decelerating area II and decelerating area III
3for 20m.Thermoplasticity protrusion-type vibrations graticule is banded, along the longitudinal width L of direction of traffic every bar thermoplasticity protrusion-type vibrations graticule
5for 600mm, transverse width is width of roadway, and in every bar thermoplasticity protrusion-type vibrations graticule, projection block 1 is 4.5mm relative to the height h of base part 2, the interval L of adjacent two thermoplasticity protrusion-types vibrations graticule
0for 5m.
As shown in Figure 2, the cross section of hump formula bituminous concrete base deceleration strip is the semiellipse type of band rounded corner, scribble heat molten type reflecting coating at every bar hump formula bituminous concrete base deceleration strip upper surface, described heat molten type reflecting coating is formed along the spraying of interval, width of roadway direction by yellowish-white two kinds of colors.Every section of bituminous concrete base deceleration railway spike forms by arranging deceleration railway spike more, and two often adjacent row's deceleration railway spikes adopt Heterogeneous Permutation, and that can effectively avoid driver to have a mind to hides deceleration railway spike and suddenly beat steering wheel, causes the problem of direction sideslip.Wherein, deceleration railway spike is spherical arc shape railway spike.
In decelerating area II, by direction of traffic, Article 1 hump formula bituminous concrete base deceleration strip height H
1(in figure, use H
xrepresent, wherein which bar hump formula bituminous concrete base deceleration x represents) be 30mm, wide W
1(in figure, use W
yrepresent, wherein which bar hump formula bituminous concrete base deceleration y represents) be 60mm, Article 2 and Article 3 hump formula pitch deceleration strip height H
2,h
3for 35mm, wide W
2,w
3for 80mm, adjacent two hump formula deceleration strip interval L
2for 20m.Wherein, often kind of reflecting coating is 0.4m along the spraying length in width of roadway direction.
In decelerating area III, the segment length of two sections of bituminous concrete base deceleration railway spikes is respectively 20m, 30m, every section of bituminous concrete base deceleration railway spike is made up of the deceleration railway spike arranged perpendicular to direction of traffic more, often adjacent two row's deceleration railway spikes adopt Heterogeneous Permutation, adjacent two row's deceleration railway spike spacing a are 0.65m, and often arranging adjacent two railway spike spacing b is 0.5m.Deceleration railway spike diameter D is 100mm, and the overall overhead height of deceleration railway spike is 40mm, two sections of deceleration railway spike interval L
4for 20m.
The effect reminding driver to slow down mainly is played in decelerating area I, also has certain control effect to dilly simultaneously; Forced deceleration effect is mainly played in decelerating area II and III, adopts these two kinds of deceleration facilities that the fatigue on Driver Vision can be prevented with numb simultaneously, thus accelerates immediately again after preventing driver from just slowing down, and reaches the object of long-time long distance control speed.
By testing on long and steep downgrade road surface, when the car that the speed of a motor vehicle is 120km/h passes through, after the I of decelerating area, the speed of a motor vehicle reduces to 110km/h, after the II of decelerating area, the speed of a motor vehicle reduces to 80km/h, after the III of decelerating area, the speed of a motor vehicle reduces to 50km/h, and the car speed of a motor vehicle reduces 58% after by deceleration road surface.
embodiment 2
Embodiment 2 is substantially identical with the layout of embodiment 1, and difference is:
Decelerating area I and decelerating area II interval L
1for 12m, decelerating area II and decelerating area III interval L
3for 25m.
In the I of decelerating area, along the longitudinal width L of direction of traffic every bar thermoplasticity protrusion-type vibrations graticule
5for 400mm, transverse width is width of roadway, and in every bar thermoplasticity protrusion-type vibrations graticule, the height h of projection block 1 is 6mm, the interval L of adjacent two thermoplasticity protrusion-types vibrations graticule
0for 8m.
In decelerating area II, by direction of traffic, Article 1 hump formula bituminous concrete base deceleration strip height H
1for 20mm, wide W
1for 50mm, Article 2 hump formula pitch deceleration strip height H
2for 40mm, wide W
2for 80mm, Article 3 hump formula pitch deceleration strip height H
3for 30mm, wide W
3for 50mm, adjacent two hump formula deceleration strip interval L
2for 15m.Wherein, often kind of reflecting coating is 0.5m along the spraying length in width of roadway direction.
In decelerating area III, the segment length of two sections of bituminous concrete base deceleration railway spikes is 30m, every section of bituminous concrete base deceleration railway spike is made up of the deceleration railway spike arranged perpendicular to direction of traffic more, often adjacent two row's deceleration railway spikes adopt Heterogeneous Permutation, adjacent two row's deceleration railway spike spacing a are 0.5m, and often arranging adjacent two railway spike spacing b is 0.4m.Deceleration railway spike diameter D is 120mm, and deceleration railway spike height is 40mm, two sections of deceleration railway spike interval L
4for 10m.
By testing on long and steep downgrade road surface, when the dolly that the speed of a motor vehicle is 110km/h passes through, after the I of decelerating area, the speed of a motor vehicle drops to 105km/h, and after the II of decelerating area, the speed of a motor vehicle drops to 85km/h, after the III of decelerating area, the speed of a motor vehicle reduces to 55km/h, is finally down to safe speed, reduces 50% altogether by the little vehicle speed in whole deceleration road surface.
embodiment 3
By direction of traffic, the long and steep downgrade energy dissipating deceleration road surface that embodiment 3 provides arranges that three thermoplasticity protrusion-types perpendicular to direction of traffic shake decelerating area II that I, two, decelerating area that graticules form forms perpendicular to the hump formula bituminous concrete base deceleration strip of direction of traffic and the decelerating area III that one section of bituminous concrete base deceleration railway spike is formed successively.
Wherein, the interval L of decelerating area I and decelerating area II
1for 10m, the interval L of decelerating area II and decelerating area III
3for 10m.
Wherein, in the I of decelerating area, thermoplasticity protrusion-type vibrations graticule is banded, along the longitudinal width L of direction of traffic every bar thermoplasticity protrusion-type vibrations graticule
5be 600 (300) mm, transverse width is width of roadway, and in every bar thermoplasticity protrusion-type vibrations graticule, the height h of projection block 1 is 3mm, the interval L of adjacent two thermoplasticity protrusion-types vibrations graticule
0for 4m.
Wherein, the cross section of hump formula bituminous concrete base deceleration strip is the semiellipse type of band rounded corner, scribble heat molten type reflecting coating at every bar hump formula bituminous concrete base deceleration strip upper surface, described heat molten type reflecting coating is formed along the spraying of interval, width of roadway direction by yellowish-white two kinds of colors.Every section of bituminous concrete base deceleration railway spike forms by arranging deceleration railway spike more, and two often adjacent row's deceleration railway spikes adopt Heterogeneous Permutation, and that can effectively avoid driver to have a mind to hides deceleration railway spike and suddenly beat steering wheel, causes the problem of direction sideslip.Wherein, deceleration railway spike is spherical arc shape railway spike.
In decelerating area II, by direction of traffic, Article 1 hump formula bituminous concrete base deceleration strip height H
1for 35mm, wide W
1for 80mm, Article 2 hump formula pitch deceleration strip height H
2for 40mm, wide W
2for 80mm, adjacent two hump formula deceleration strip interval L
2for 15m.Wherein, often kind of reflecting coating is 0.6m along the spraying length in width of roadway direction.
In decelerating area III, the segment length of bituminous concrete base deceleration railway spike is 30m, bituminous concrete base deceleration railway spike is made up of the deceleration railway spike arranged perpendicular to direction of traffic more, often adjacent two row's deceleration railway spikes adopt Heterogeneous Permutation, adjacent two row's deceleration railway spike spacing a are 0.45m, and often arranging adjacent two railway spike spacing b is 0.5m.Deceleration railway spike diameter D is 120mm, and deceleration railway spike height is 30mm.
By testing on long and steep downgrade road surface, average speed is that the medium truck of 90km/h is through this deceleration road surface, after the I of decelerating area, the speed of a motor vehicle has been reduced to 85km/h, after the II of decelerating area, the speed of a motor vehicle is reduced to 65km/h, after the III of decelerating area, the speed of a motor vehicle is reduced to 60km/h, and the speed of a motor vehicle of this process lorry reduces 33%.
embodiment 4
By direction of traffic, the long and steep downgrade energy dissipating deceleration road surface that embodiment 4 provides arranges that three thermoplasticity protrusion-types perpendicular to direction of traffic shake decelerating area II that I, two, decelerating area that graticules form forms perpendicular to the hump formula bituminous concrete base deceleration strip of direction of traffic and the decelerating area III that two sections of bituminous concrete base deceleration railway spikes are formed successively.
Wherein, the interval L of decelerating area I and decelerating area II
1for 15m, the interval L of decelerating area II and decelerating area III
3for 25m.
Wherein, in the I of decelerating area, thermoplasticity protrusion-type vibrations graticule is banded, along the longitudinal width L of direction of traffic every bar thermoplasticity protrusion-type vibrations graticule
5for 500mm, transverse width is width of roadway, and in every bar thermoplasticity protrusion-type vibrations graticule, the height h of projection block 1 is 6mm, the interval L of adjacent two thermoplasticity protrusion-types vibrations graticule
0for 8m.
Wherein, the cross section of hump formula bituminous concrete base deceleration strip is the semiellipse type of band rounded corner, scribble heat molten type reflecting coating at every bar hump formula bituminous concrete base deceleration strip upper surface, described heat molten type reflecting coating is formed along the spraying of interval, width of roadway direction by yellowish-white two kinds of colors.Every section of bituminous concrete base deceleration railway spike forms by arranging deceleration railway spike more, and two often adjacent row's deceleration railway spikes adopt Heterogeneous Permutation, and that can effectively avoid driver to have a mind to hides deceleration railway spike and suddenly beat steering wheel, causes the problem of direction sideslip.Wherein, deceleration railway spike is spherical arc shape railway spike.
In decelerating area II, by direction of traffic, Article 1 hump formula bituminous concrete base deceleration strip height H
1for 30mm, wide W
1for 70mm, Article 2 hump formula pitch deceleration strip height H
2for 35mm, wide W
2for 70mm, adjacent two hump formula deceleration strip interval L
2for 25m.Wherein, often kind of reflecting coating is 0.6m along the spraying length in width of roadway direction.
In decelerating area III, the segment length of every section of bituminous concrete base deceleration railway spike is 30m, bituminous concrete base deceleration railway spike is made up of the deceleration railway spike arranged perpendicular to direction of traffic more, often adjacent two row's deceleration railway spikes adopt Heterogeneous Permutation, adjacent two row's deceleration railway spike spacing a are 0.5m, and often arranging adjacent two railway spike spacing b is 0.45m.Deceleration railway spike diameter D is 100mm, and deceleration railway spike height is 30mm, two sections of deceleration railway spike interval L
4for 15m.
By testing on long and steep downgrade road surface, average speed be the storehouse grating semitrailer of 90km/h by this decelerating area time, after the I of decelerating area, the speed of a motor vehicle remains unchanged substantially, and after the II of decelerating area, the speed of a motor vehicle is reduced to 70km/h, after the III of decelerating area, the speed of a motor vehicle has been reduced to 40km/h, final safety, and whole process speed reduces 55%.
embodiment 5
By direction of traffic, the long and steep downgrade energy dissipating deceleration road surface that embodiment 5 provides arranges that three thermoplasticity protrusion-types perpendicular to direction of traffic shake decelerating area II that I, one, decelerating area that graticules form forms perpendicular to the hump formula bituminous concrete base deceleration strip of direction of traffic and the decelerating area III that two sections of bituminous concrete base deceleration railway spikes are formed successively.
Wherein, the interval L of decelerating area I and decelerating area II
1for 10m, the interval L of decelerating area II and decelerating area III
3for 15m.
Wherein, in the I of decelerating area, thermoplasticity protrusion-type vibrations graticule is banded, along the longitudinal width L of direction of traffic every bar thermoplasticity protrusion-type vibrations graticule
5for 600mm, transverse width is width of roadway, and in every bar thermoplasticity protrusion-type vibrations graticule, the height h of projection block 1 is 5mm, the interval L of adjacent two thermoplasticity protrusion-types vibrations graticule
0for 6m.
Wherein, the cross section of hump formula bituminous concrete base deceleration strip is the semiellipse type of band rounded corner, scribble heat molten type reflecting coating at every bar hump formula bituminous concrete base deceleration strip upper surface, described heat molten type reflecting coating is formed along the spraying of interval, width of roadway direction by yellowish-white two kinds of colors.Every section of bituminous concrete base deceleration railway spike forms by arranging deceleration railway spike more, and two often adjacent row's deceleration railway spikes adopt Heterogeneous Permutation, and that can effectively avoid driver to have a mind to hides deceleration railway spike and suddenly beat steering wheel, causes the problem of direction sideslip.Wherein, deceleration railway spike is spherical arc shape railway spike.
In decelerating area II, by direction of traffic, Article 1 hump formula bituminous concrete base deceleration strip height H
1for 30mm, wide W
1for 80mm.Wherein, often kind of reflecting coating is 0.6m along the spraying length in width of roadway direction.
In decelerating area III, along direction of traffic, the segment length of bituminous concrete base deceleration railway spike is respectively 20m, 30m, bituminous concrete base deceleration railway spike is made up of the deceleration railway spike arranged perpendicular to direction of traffic more, often adjacent two row's deceleration railway spikes adopt Heterogeneous Permutation, adjacent two row's deceleration railway spike spacing a are 0.45m, and often arranging adjacent two railway spike spacing b is 0.5m.Deceleration railway spike diameter D is 100mm, and deceleration railway spike height is 30mm, two sections of deceleration railway spike interval L
4for 10m.
By testing on long and steep downgrade road surface, average speed be the offroad vehicle of 120km/h by this decelerating area time, after the I of decelerating area, the speed of a motor vehicle is reduced to 110km/h, and after the II of decelerating area, the speed of a motor vehicle is reduced to 95km/h, after the III of decelerating area, the speed of a motor vehicle has been reduced to 80km/h, final safety, and whole process speed reduces 33%.
The construction technology on above-mentioned each long and steep downgrade energy dissipating deceleration road surface comprises following steps:
1) road surface pretreatment: needed in decelerating area I and decelerating area III position of constructing to clean, ensure that road surface does not have impurity and dust, and road surface is dry, after adopting compressed air to blow off the railway spike paste position in decelerating area III, clean down with acetone again, repair smooth at larger recess railway spike glue;
2) in construction section setting-out: finish each decelerating area arrangement diagram as mark with line tool on construction section;
3) construction of each decelerating area:
The construction of decelerating area I: the thermoplasticity protrusion-type vibrations graticule graticule line drawing machine in decelerating area I carries out setting-out.
The construction of decelerating area II: road-surface milling is gone out the thickness of regulation by the cloth tagging of the deceleration strip of the decelerating area II first using milling machine to finish in step (2), with sander, the road surface after milling is polished flat, then remove residue and dust, finally with mulseal, prefabricated hump formula bituminous concrete base deceleration strip is carried out boning, installing; After installing half an hour, then graticule line drawing machine is adopted to carry out the spraying of heat molten type reflecting coating.
The construction of decelerating area III: prepare a certain amount of epoxy adhesive, road surface is spread upon equably with greasy cutter, thick about the 2mm of glue, again deceleration railway spike is pasted onto according to the position of setting and smears epoxy adhesive place, then by the place's compacting of deceleration railway spike (artificial pressing 20 seconds), glue is just extruded from railway spike periphery.
4) maintenance of each decelerating area: after step (3) completes, forbid moving above-mentioned deceleration facilities, and by its maintenance 3-5 hour, can be open to traffic, suitably can increase the curing time of 2-3 hour for overcast and rainy, low temperature bad weather, and rain drop erosion can be prevented with covered rearing with plastic film.
In the present invention, because the actual conditions of long and steep downgrade speedway are different, the setting for different length, the gradient and bend deceleration facilities also can have difference.For in easy flights, very long section, ramp suitably can increase decelerating area II and decelerating area III; Comparatively large for the gradient, the number of the deceleration strip in decelerating area II suitably can be reduced in very long section, ramp, increases the length of decelerating area III; The installation of bend should be avoided for the section that camber is larger.
The above; just the present invention is directed to the preferred version of the actual conditions of several different long descending speedway; not any pro forma restriction is done to the present invention; the art personnel utilize the technology contents of above-mentioned announcement to make a little simple amendment; equivalents or modification, all in protection scope of the present invention and so on.
Claims (7)
1. by direction of traffic, a long and steep downgrade energy dissipating deceleration road surface, arranges that many shake by thermoplasticity protrusion-type the decelerating area III that I, one to three, decelerating area forming of graticule forms perpendicular to the decelerating area II be made up of hump formula bituminous concrete base deceleration strip and one to two sections of deceleration railway spikes of direction of traffic perpendicular to direction of traffic successively, it is characterized in that: described decelerating area I is shaken graticule by three thermoplasticity protrusion-types perpendicular to direction of traffic and formed, described thermoplasticity protrusion-type vibrations graticule is banded, shaking the longitudinal width of graticule along direction of traffic every bar thermoplasticity protrusion-type is 300-600mm, transverse width is width of roadway, projection block is 3-6mm relative to the height of base part, and adjacent two thermoplasticity protrusion-types vibrations graticule is spaced apart 4-8m, adjacent two hump formula bituminous concrete base deceleration strip spacing are 15-25m, be 20-35mm along direction of traffic Article 1 hump formula bituminous concrete base deceleration strip height, longitudinal width is 50-80mm, Article 2 hump formula bituminous concrete base deceleration strip height is 30-40mm, longitudinal width is 50-80mm, Article 3 hump formula bituminous concrete base deceleration strip height is 30-40mm, longitudinal width is 50-80mm, the transverse width of every bar hump formula bituminous concrete base deceleration strip is the transverse width on road surface, described hump formula bituminous concrete base deceleration strip is banded, its cross section is the semiellipse type of band rounded corner, heat molten type reflecting coating is scribbled at hump formula bituminous concrete base deceleration strip upper surface.
2. a kind of long and steep downgrade energy dissipating deceleration road surface according to claim 1, is characterized in that: described decelerating area I is 10-15m with decelerating area II spacing, and described decelerating area II is 10-25m with decelerating area III spacing.
3. according to a kind of long and steep downgrade energy dissipating deceleration road surface in claim 1, it is characterized in that: described heat molten type reflecting coating is sprayed along interval, width of roadway direction by yellowish-white two kinds of colors, often plant reflecting coating spraying length 0.4-0.6m along width of roadway direction, spraying width is the width of hump formula bituminous concrete base deceleration strip.
4. a kind of long and steep downgrade energy dissipating deceleration road surface according to claim 1, it is characterized in that: decelerating area III is made up of one to two sections of bituminous concrete base deceleration railway spikes, the segment length of every section of bituminous concrete base deceleration railway spike is 20-30m, the spacing of adjacent two sections of bituminous concrete base deceleration railway spikes is 10-20m, and every section of bituminous concrete base deceleration railway spike is made up of the deceleration railway spike arranged perpendicular to direction of traffic more.
5. a kind of long and steep downgrade energy dissipating deceleration road surface according to claim 4, it is characterized in that: in described decelerating area III, often adjacent two row's deceleration railway spikes adopt Heterogeneous Permutation, adjacent two row's deceleration railway spike spacing 0.45-0.65m, often arrange adjacent two railway spike spacing 0.35-0.5m.
6. a kind of long and steep downgrade energy dissipating deceleration road surface according to claim 4, it is characterized in that: the deceleration railway spike in described decelerating area III is spherical arc shape railway spike, its bottom surface circular diameter is 0.1-0.12m, and height is 0.03-0.04m.
7. the construction technology on a kind of long and steep downgrade energy dissipating deceleration road surface according to claim 1, is characterized in that it comprises following steps:
1) road surface pretreatment: needed in decelerating area I and decelerating area III position of constructing to clean, ensure that road surface does not have impurity and dust, and road surface is dry, after adopting compressed air to blow off the railway spike paste position in decelerating area III, clean down with acetone again, repair smooth at larger recess railway spike glue;
2) in construction section setting-out: finish each decelerating area arrangement diagram as mark with line tool on construction section;
3) construction of each decelerating area:
The construction of decelerating area I: the thermoplasticity protrusion-type vibrations graticule graticule line drawing machine in decelerating area I carries out setting-out;
The construction of decelerating area II: road-surface milling is gone out the thickness of setting by the cloth tagging of the deceleration strip of the decelerating area II first using milling machine to finish in step (2), with sander, the road surface after milling is polished flat, then remove residue and dust, finally with mulseal, prefabricated hump formula bituminous concrete base deceleration strip is carried out boning, installing; Install after the time of setting, then adopt graticule line drawing machine to carry out the spraying of heat molten type reflecting coating;
The construction of decelerating area III: prepare a certain amount of epoxy adhesive, road surface is spread upon equably with greasy cutter, again deceleration railway spike is pasted onto according to the position of setting and smears epoxy adhesive place, then by the place's compacting of deceleration railway spike, glue is just extruded from railway spike periphery;
4) maintenance of each decelerating area: after step (3) completes, forbids moving above-mentioned deceleration facilities, and by its maintenance 3-5 hour, can be open to traffic, and suitably can increase the curing time of 2-3 hour for overcast and rainy, low temperature bad weather.
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| 山区高速公路长大下坡路段交通安全保障设施研究;肖宁;《中国学位论文全文数据库》;20091127;第45-47页 * |
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