CN107119602A - Suitable for the anticollision guardrail structure and its construction method of Expressway Extension Project - Google Patents
Suitable for the anticollision guardrail structure and its construction method of Expressway Extension Project Download PDFInfo
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- CN107119602A CN107119602A CN201710338165.3A CN201710338165A CN107119602A CN 107119602 A CN107119602 A CN 107119602A CN 201710338165 A CN201710338165 A CN 201710338165A CN 107119602 A CN107119602 A CN 107119602A
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- guardrail
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- bar
- power transmission
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/08—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks
- E01F15/081—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks characterised by the use of a specific material
- E01F15/083—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks characterised by the use of a specific material using concrete
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/08—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks
- E01F15/088—Details of element connection
Abstract
The invention discloses the anticollision guardrail structure and its construction method suitable for Expressway Extension Project, mainly include guardrail basis, guardrail main body, energy-absorbing power transmission rod member, antiglare shield and delineator, wherein, guardrail main body is cast-in-place concrete structure, and the bar-mat reinforcement and reinforced steel of the different ratios of reinforcement are set for highway straight way, bend, big longitudinal gradient section etc.；Described energy-absorbing power transmission rod member is arranged between adjacent barrier, is made up of the service sleeve of two kinds of sizes, round bar transmission rod, the thick welding steels of 5mm；For the invention, Aided design antiglare shield, delineator, after the completion of design security performance detection is carried out using 55 tons of truck field vehicle full scale crash tests, as a result show that the guardrail globality is good, anticollision intensity is high, and construction technology is ripe, can effectively reduce in highway weight, the incidence of especially big pernicious traffic accident caused by motor vehicle passes through median strip, and consider the traffic safety in the bend section of Frequent Accidents, it is worth a wide range of and promotes.
Description
Technical field
The invention belongs to road engineering technical field, it is related to the anticollision guardrail structure suitable for Expressway Extension Project
And its construction method.
Background technology
China's Freeway Traffic Volume had showed the trend of rapid growth since in recent years, the part province volume of traffic year increases
Rate is more than 10%, the close even more than design traffic volume in local section.Shown according to national related accidents statistics, because of road
Median barrier protective capacities is relatively low, it is impossible to stop that large and medium-sized vehicles traverse median barrier is touched with opposed vehicle
The problem of hitting and cause secondary major accident is serious；After traditional corrugated beam barrier crashes, maintenance workload is big,
Construction period influences road passage capability, and may further induce traffic accident.Certain saves highway section 2012 extremely
Add up occur the traffic accident 33 that motor vehicle passes through median barrier in 3 years in 2014,5 dead, 4 wounds are caused altogether, are applied
Accident 458 occurs altogether for work section, and cause casualties 58 people, and such accident shows the trend increased year by year,
Wherein, the accident 15 for median barrier being passed through altogether in 2014, accounts for the one of 2012 ~ 2014 years 3 years accumulative accidents
Half left and right.Because Expressway Central Strip guardrail protective capacities is relatively low, large and medium-sized vehicle occurs traffic accident and easily passes through center
Dividing strip, occurs head-on crash with opposed vehicle and further results in weight, especially big pernicious traffic accident, it has also become harm highway
One of major reason of traffic safety.Thus, it is necessary to study the anticollision guardrail structure suitable for Expressway Extension Project
And its construction method, the need for novel guardrail can not only be satisfied with Expressway Extension Project, and shield can be effectively improved
Column anti-collision level and security performance, it is ensured that driver drives vehicle security.
The content of the invention
The technical problems to be solved by the invention are anticollision guardrail structure of the research and development suitable for Expressway Extension Project
And its construction method, the guard bar structure is directed to practical in highway, the reconstruction and extension project of national trunk highway, it is possible to resolve
The strength problem of existing concrete guard bar structure, improves travel safety.
To achieve the above object, the technical scheme is that：
Suitable for the anticollision guardrail structure and its construction method of Expressway Extension Project, it is characterised in that including guardrail base
Plinth, guardrail main body, energy-absorbing power transmission rod member, antiglare shield, delineator；The guardrail basis, using cast-in-place concrete structure, both sides are adopted
It is connected, guardrail buried depth is 20cm, and is set inside guardrail basis and cast-in-place concrete with road surface with C30 concrete cast-in-situs
Continuity reinforcement(bar) net；Longitudinal reinforcement uses hot rolling plain bar in the guardrail main body, bar-mat reinforcement, and straight way section transverse steel is matched somebody with somebody
Muscle rate span, for the special bend section of accident-prone road section, condition and big longitudinal gradient section, works as circle 0.35 ~ 0.50%
When sweep is 650 ~ 1000m, transverse reinforcement ratio increase by 0.05 ~ 0.15% is horizontal when circular curve radius is below 650m
To rebar ratio increase by 0.20%, respectively add on upper and lower service sleeve top with 4 continuous light circle longitudinal reinforcements, it is ensured that sleeve pipe is steady
Vibration graticule, the top angle of gradient α on guardrail inclined-plane are set away from runway edge line 10cm in the transmission of qualitative and power, left side side trip
For 88 °, bottom angle of gradient β be 54 °；The energy-absorbing power transmission rod member, is made up of, adjacent two service sleeve, power transmission reinforcing bar, steel plate
The processing of plain adapter plus power transmission reinforcing bar is taken between guardrail, one end is fixed in concrete, and one end is fixed in sleeve, it is upper and lower pre-
Bushing burying is respectively Ф 45 and the round steel of Ф 60, and service sleeve is upper and lower to be welded with steel plate, and thickness is 5mm, and width is 240mm, length
For 100mm, two steel plates are coplanar, and place plane intersects at casing axis；The antiglare shield, antiglare shield and pedestal use hard
Alloy composite materials make, and are integrally formed, thickness of slab 3.5mm, and color is green, centrally disposed dividing strip concrete guardrail top, if
Spacing is put for 1m, sets the antiglare shield shading angle with straightway to be no less than 8 °, the flat, lamp shielding angle in vertical curve section should be
8 ° ~ 15 °, for median strip concrete guardrail and bridge list shelving concrete guardrail transition section, median strip concrete guardrail and bridge group
Pier protection guardrail section, anti-dazzle in box-like guardrail transition section, median strip concrete guardrail and bridge corrugated beam barrier changeover portion, bridge
Plate is arranged on the top of upstream side concrete guardrail；The delineator, using adhesive boundary sign, by V classes reflective membrane, support and connection
Part is constituted, and delineator is attached on reinforced concrete fence, fixed by expansion bolt, and other associated specifications should expire
The related request of sufficient design document；The guard bar structure material, is mixed and stirred among process in concrete, the oxidation of incorporation 3.0 ~ 5.0%
Iron oxide red, and in the maintenance work after the completion of construction, on concrete protection column, surface engagement uses concrete coloring agent and coagulation
Native curing agent.
C15 concrete backfills are used in median strip；, need to be to center the need for being set according to median strip concrete guardrail
Dividing strip is excavated planting soil, removed using the backfill of C15 lean concretes after plant, ditch should be constructed for superelevation section simultaneously in；It is suitable
Anticollision guardrail structure for Expressway Extension Project is constructed, and the longitudinal direction construction section length per node guard bar is 30m, adjacent
Connection between two node guard bars uses energy-absorbing power transmission rod member, and transmission rod one end is fixed in concrete, and steel pipe sleeve is inserted in one end
It is interior, should not left and right or crooked up and down to ensure to set in strict accordance with design attitude in the construction of guard rail intensity；Transmission rod is used
Ф 45 and Ф 60 round steel is respectively adopted in hot rolling plain bar, service sleeve 1 and service sleeve 2, and the upper and lower of service sleeve is set
It is equipped with 5mm steel plates, it is ensured that guardrail intensity；Cement in the material mixture ratio of cement mortar：Swelling agent：Water=1：0.1：0.21；It is applied to
The anticollision guardrail structure of Expressway Extension Project uses sliding formwork cast-in-place construction technique；Roadbed and bridge transition section guard, bridge
The anti-column of pier uses fixed form cast-in-place construction technique in beam, and concrete strength is not lower than the 70% of design strength, form removal during form removal
When must not damage the corner of concrete guardrail, and template should be kept intact；Suitable for the anticollision shield of Expressway Extension Project
Column structure, which was used in section construction mode, each long 4km of guardrail construction section scope, same period, sets two guardrails to construct
Section, other sections in addition can carry out the construction such as old pavement Comprehensive Treatment, pavement recycling；Guardrail construction can in sequential
Both intersects with the construction such as old pavement Comprehensive Treatment, pavement recycling, i.e., any one are carried out in advance, but guardrail construct completion when
Between should control before Construction of Asphalt Pavement, to avoid being stained road surface；Suitable for the anticollision barrier of Expressway Extension Project
Structure and its construction method, guard bar structure both sides side trip are poured using C30, and cast-in-place piece should carry out kerve line processing, its surface
Antiskid requirement should meet the indices of concrete road surface, C30 concrete layers cut one of baste, 2 ~ 3cm of depth every 2m；Per 20m
If one of expansion joint, wide 1 ~ 2cm prevents that high temperature from blowing up destruction, Inner fills out expansion joint plate；Baste, expansion joint top perfusion heated bitumen are filled out
Rag is answered on seam, C30 concrete layers surface, anti-skidding with profit；Anticollision guardrail structure and its construction suitable for Expressway Extension Project
Temporary drainage system during method, median strip excavation construction excavates paving using in completely each longitudinal slope sag vertical curve bottom
If horizontal sewer, as during the excavation construction of median strip temporary drainage export, still needed in rainy day work progress
Exposed roadbed is covered with colour bar waterproof cloth, standby water pumper drains the water away in time, prevent that rainwater steeps bad roadbed.
Beneficial effects of the present invention are as follows：
The present invention provides the anticollision guardrail structure and its construction method suitable for Expressway Extension Project, is that solution is public at a high speed
Road vehicles, which pass through to collide with opposed vehicle behind median strip, causes weight, the effective way of especially big pernicious traffic accident；The present invention
The energy-absorbing power transmission rod member of offer is made up of service sleeve, power transmission reinforcing bar, steel plate, and plain adapter plus power transmission are taken between adjacent two guardrail
The processing of reinforcing bar, one end is fixed in concrete, and one end is fixed in sleeve, and Ф 45 and Ф is respectively adopted in upper and lower service sleeve
60 round steel, service sleeve is upper and lower to be welded with steel plate, and thickness is 5mm, and width is 240mm, and length is 100mm, and two steel plates are with flat
Face, place plane intersects at casing axis, and energy-absorbing power transmission rod member can not only realize effective connection of adjacent barrier, and occur
In the case of traffic accident, the collision energy that the seam of guardrail weakness is subject to is absorbed in time and guardrail main body is delivered to, pass through weldering
Connect steel plate in time to disperse, motor vehicle passes through the probability of median strip because of guardrail damage in reduction traffic accident, it is to avoid secondary
Weight, the incidence of especially big traffic accident, force a return to normal direction of traffic.
The guardrail main body that the present invention is provided, the transverse and longitudinal reinforcing bar collocation method of bar-mat reinforcement is to combine fracture mechanics, elastic force
Etc. theory of mechanics, is determined with 55 tons of truck field vehicle full scale crash tests of Abaqus finite element simulation calculations and progress,
The ratio of reinforcement span of straight way section transverse steel is 0.35 ~ 0.50%, for the special bend of accident-prone road section, condition
Section and big longitudinal gradient section, when circular curve radius is 650 ~ 1000m, transverse reinforcement ratio increase by 0.05 ~ 0.15%, circle is bent
When line radius is below 650m, transverse reinforcement ratio increase by 0.20% respectively adds on upper and lower service sleeve top with 4 continuous light
Circle longitudinal reinforcement, it is ensured that casing stability and power transmission, on the premise of crashworthiness is ensured, the ratio of reinforcement is verified by calculating
And experimental verification, construction material consumption is suited measures to local conditions, Guard Rail Structure Design is scientific and reasonable, can effectively save social resources, if
After the completion of meter, 55 tons of truck field vehicle full scale crash tests are carried out, as a result show whether pass through, cross and ride experiment in vehicle
Sample, test specimen component and its depart from fragment and whether invade and whether overturned after vehicle passenger compartment, vehicle collision, after vehicle collision
Wheelmark whether meet guiding roll away from frame requirement, vehicle keep normally travel posture must not occur horizontal turn, u-turn phenomenon etc.
Meet the requirements, the qualification result anticollision guardrail structure high capacity waggon testing inspection index meets in standard HB grades（Seven grades）Protection etc.
The requirement of level.
The guardrail basis that the present invention is provided, both sides are connected using C30 concrete cast-in-situs with road surface, and on guardrail basis and now
Continuity reinforcement(bar) net is set to form it into an entirety inside pouring concrete, guardrail buried depth is 20cm, with traditional F types anticollision barrier
Compared with reinforced F types anticollision barrier, increase the weight of base foundation, foundation area is 1.5 ~ 4 times of conventional guard rail, is improved
The bulk strength and stability of guardrail, the collision energy that effectively can be transmitted top are diffused into ground by basic reinforcement network, and
Collided in large and medium-sized vehicle, when guardrail is had the trend of overturning, guardrail basis with both sides road surface by arrangement of reinforcement company
The unified entirety to be formed is connect, by the basic interlocking of guardrail in pavement structure, effectively can be turned the deadweight of vehicle by pavement structure
The anchorage of guardrail is turned to, reduction causes secondary heavy, especially big traffic accident incidence.
The guardrail main body that the present invention is provided, in the theories of mechanics such as rational mechanics, Elasticity, Abaqus finite element modelling meters
On the basis of calculation, the top angle of gradient α on guardrail inclined-plane is 88 °, bottom angle of gradient β is 54 °, uses such angle design can be with
The effectively break in grade of reduction guardrail, and then the Uplifting amount after large and medium-sized vehicle collides can be significantly decreased, in shield
On the premise of the certain guard rail crashworthiness with guarantee of column upper width, guardrail foundation width is using base during traditional design angle
The 85 ~ 95% of plinth width, occupation of land can be saved in Expressway Extension Project, side trip is further widened, and be driver's experience
More buffering reaction time are provided after fortuitous event, accident rate is reduced.
The guard bar structure material that the present invention is provided, is mixed and stirred among process in concrete, the iron oxide red of incorporation 3.0 ~ 5.0%,
And in the maintenance work after the completion of construction, on concrete protection column, surface engagement uses concrete coloring agent and concrete hardening
Agent, compared with traditional construction technique, the color and luster of the guardrail is obvious, and surface erosion resistance can be higher with anti-permeability, can be at night
Between clearly reflect guardrail-profile under car light irradiation when driving a vehicle, the traffic safety facilities of the novel guardrail setted structure is with more pin
To property, enable to be fully completed and reach after design protective capacities in longer time section, in realization in guard bar structure construction
The practical raising of the security protection ability of central median, reduces the security risk of turnpike driving.
The present invention compared with current conventional corrugated beam barrier structure, can be prevented effectively from through highway projects Construction practices
The traffic accident that motor vehicle passes through median strip and caused, reduction causes secondary heavy, especially big traffic accident incidence, in view of
China's highway is applied to height more in New Jersey's combined type guard bar, the present invention are used big, jackshaft median barrier
The anticollision guardrail structure of fast highway reconstruction and expansion engineering is connected therewith, transition convenient, and it is more convenient to construct, and bulk strength is high, favorably
Comfortable in driving, working drawing review expense is small, the need for being not only satisfied with Expressway Extension Project, and can effectively carry
High guardrail anti-collision level and security performance, it is ensured that driver drives vehicle security.
China 2016《The government work report》It is middle to propose, it will be strengthened infrastructure during " 13 ", with
Continuing to develop for highway in China cause, will have nearly ten thousand kilometers of highways to need to carry out reorganization and expansion, with to safety every year from now on
The theory of driving is increasingly focused on, the anticollision guardrail structure and its construction of the present invention suitable for Expressway Extension Project
Method has a extensive future, and potential social and economic effects are notable.
Brief description of the drawings
Fig. 1 is applied to the anticollision guardrail structure schematic diagram of Expressway Extension Project for the present invention.
Fig. 2 is guardrail reinforcement structure schematic diagram of the present invention.
Fig. 3 is guardrail body interior reinforcement structure schematic diagram of the present invention.
The description of reference numerals of each element is as follows in figure：
1-antiglare shield；2-transverse steel；3-go up service sleeve；4-delineator；5-lower service sleeve；6-5mm welds steel
Plate；7-C30 concrete in-situ layers；8-C15 concrete backfills layer；9-guardrail reinforcement foundation net；10-longitudinal reinforcement；11-upper pre-
Bushing burying tack power transmission reinforcing bar；12-lower service sleeve tack power transmission reinforcing bar.
Embodiment
In order to be better understood from the present invention, the present invention is made further specifically below with reference to drawings and the specific embodiments
Bright, described embodiment is merely illustrative of the technical solution of the present invention, and is not intended to limit the invention.
Embodiment
The anticollision guardrail structure and its construction method suitable for Expressway Extension Project of the present invention, including guardrail base
Plinth, guardrail main body, energy-absorbing power transmission rod member, antiglare shield and delineator.Shown in reference picture 1, C15 coagulations are used in median strip
Earthen backfill, according to median strip actual grade, C15 concrete backfills layer (8) thickness is about 40cm；Median strip concrete
Anticollision barrier is constructed, and the longitudinal direction construction section length per node guard bar is that the connection between 30m, adjacent two guardrail uses energy-absorbing power transmission
Rod member, by upper service sleeve (3), upper service sleeve tack power transmission reinforcing bar (11) and lower service sleeve (5), lower service sleeve tack
Power transmission reinforcing bar (12), 5mm welding steels (6) composition, sets 1 road expansion joint (E.J.), width is 2cm per spacing 30m, addition joint filling in seam
Material；Measurement and positioning, sets wire, and a stake is set per 4m along road axis using total powerstation；It is right in place using slip-form machine
Just, it is voluntarily tentatively rear in place to adjust mould elevation and level, it is allowed to meet design attitude, tightens bolt and fix, adjusts sensor
It is allowed to be close to wire, fixed sensor, slip-form machine aligns finish in place, concrete mixing and transport, the slump of concrete is not
It can exceed that standard slump 1cm；Shown in reference picture 3, the prefabricated work of bar-mat reinforcement of transverse steel (2) and longitudinal reinforcement (10) is carried out
Make, constructed using slip-form machine, guardrail sets 1 road transverse expansion joint at interval of 20m, and width is 2cm, addition joint sealing material in seam, shield
Column sets one of baste, cutting-in 4cm, 3~5mm of slit width at interval of 4m；Curing fluid is first sprayed in maintenance, concrete curing, coordinates coagulation
Native coloring agent and concrete hardener are used, and covering curing cloth sprinkled water maintenance no less than 7 days again, and curing fluid should spray uniformly, spray
Concrete surface after spilling must not have color distortion；Shown in reference picture 2, solidifying soil anticollision guardrail structure both sides side trip uses C30
Pour, C30 concretes in-situ layer answers prefabricated guardrail reinforcement foundation net (9) before being poured with guardrail basis；Install supporting anti-at the top of guardrail
Dizzy plate (1), spacing is 1m, and the facilities such as adhesive boundary sign (4) are installed on guard bar structure.
Claims (2)
1. suitable for the anticollision guardrail structure and its construction method of Expressway Extension Project, it is characterised in that including guardrail base
Plinth, guardrail main body, energy-absorbing power transmission rod member, antiglare shield, delineator；
Described guardrail basis, using cast-in-place concrete structure, both sides are connected using C30 concrete cast-in-situs with road surface, and guardrail is buried
Depth is put for 20cm, and continuity reinforcement(bar) net is set inside guardrail basis and cast-in-place concrete；
Longitudinal reinforcement uses hot rolling plain bar, the ratio of reinforcement of straight way section transverse steel in described guardrail main body, bar-mat reinforcement
Span, for the special bend section of accident-prone road section, condition and big longitudinal gradient section, works as circular curve 0.35 ~ 0.50%
When radius is 650 ~ 1000m, transverse reinforcement ratio increase by 0.05 ~ 0.15%, when circular curve radius is below 650m, horizontal steel
Muscle ratio of reinforcement increase by 0.20%, respectively adds on upper and lower service sleeve top with 4 continuous light circle longitudinal reinforcements, left side side trip it is interior away from
Runway edge line 10cm sets vibration graticule, and the top angle of gradient α on guardrail inclined-plane is 88 °, bottom angle of gradient β is 54 °；
Described energy-absorbing power transmission rod member, is made up of service sleeve, power transmission reinforcing bar, steel plate, and plain adapter is taken between adjacent two guardrail
Plus the processing of power transmission reinforcing bar, one end is fixed in concrete, and one end is fixed in sleeve, and upper and lower service sleeve is respectively Ф 45
With the round steel of Ф 60, service sleeve is upper and lower to be welded with steel plate, and thickness is 5mm, and width is 240mm, and length is 100mm, and two steel plates are same
Plane, place plane intersects at casing axis；
Described antiglare shield, antiglare shield and pedestal are made using hard alloy composite material, are integrally formed, thickness of slab 3.5mm, face
Color is that at the top of green, centrally disposed dividing strip concrete guardrail, setting spacing is 1m, sets the antiglare shield shading angle with straightway
No less than 8 °, the flat, lamp shielding angle in vertical curve section should be 8 ° ~ 15 °, for median strip concrete guardrail and bridge list shelving
Concrete guardrail transition section, median strip concrete guardrail and bridge combined type guard bar changeover portion, median strip concrete guardrail and bridge ripple
Pier protection guardrail section in ellbeam guardrail transition section, bridge, antiglare shield is arranged on the top of upstream side concrete guardrail；
Described delineator, using adhesive boundary sign, is made up of, delineator is attached to V classes reflective membrane, support and connector
On reinforced concrete fence, fixed by expansion bolt, the correlation that other associated specifications should meet design document will
Ask；
Described guard bar structure material, is mixed and stirred among process in concrete, the iron oxide red of incorporation 3.0 ~ 5.0%, and is being constructed
In maintenance work after, on concrete protection column, surface engagement uses concrete coloring agent and concrete hardener.
2. the anticollision guardrail structure and its construction method according to claim 1 suitable for Expressway Extension Project,
It is characterized in that comprising the following steps：
C15 concrete backfills are used in median strip；Longitudinal direction construction section length per node guard bar is 30m, two adjacent sections shield
Connection between column uses energy-absorbing power transmission rod member, and transmission rod one end is fixed in concrete, and one end is inserted in steel pipe sleeve；Power transmission
Bar uses hot rolling plain bar, and service sleeve 1 and service sleeve 2 are respectively adopted Ф 45 and Ф 60 round steel, service sleeve it is upper,
Lower section is provided with 5mm steel plates；Cement in the material mixture ratio of cement mortar：Swelling agent：Water=1：0.1：0.21；Roadbed and bridge mistake
Cross the anti-column of pier in section guard, bridge and use fixed form cast-in-place construction technique, concrete strength is not lower than design by force during form removal
The 70% of degree；Guard bar structure both sides side trip is poured using C30, and cast-in-place piece should carry out kerve line processing, the antiskid requirement on its surface
The indices of concrete road surface should be met, C30 concrete layers cut one of baste, 2 ~ 3cm of depth every 2m；Set flexible together per 20m
Seam, wide 1 ~ 2cm, Inner fills out expansion joint plate；Baste, the perfusion heated bitumen joint filling of expansion joint top, rag is answered on C30 concrete layers surface；Center point
Temporary drainage system during with excavation construction is oozed using the transverse direction in completely each longitudinal slope sag vertical curve bottom digging laying
Ditch, is exported as the temporary drainage during the excavation construction of median strip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710338165.3A CN107119602A (en) | 2017-05-15 | 2017-05-15 | Suitable for the anticollision guardrail structure and its construction method of Expressway Extension Project |
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| CN201710338165.3A CN107119602A (en) | 2017-05-15 | 2017-05-15 | Suitable for the anticollision guardrail structure and its construction method of Expressway Extension Project |
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Cited By (6)
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| CN108346368A (en) * | 2018-04-17 | 2018-07-31 | 广西城市建设学校 | Municipal road bridge builds teaching facilities |
| CN108824272A (en) * | 2018-06-25 | 2018-11-16 | 武汉理工大学 | A kind of combined type low profile guardrail |
| CN109577186A (en) * | 2018-12-17 | 2019-04-05 | 山东汇通建设集团有限公司 | Overpass anti-collision wall crack resistence structure and construction |
| CN110093946A (en) * | 2019-05-10 | 2019-08-06 | 中铁第四勘察设计院集团有限公司 | A kind of underground structure bottom plate-side wall node structure and construction method |
| CN111472305A (en) * | 2018-12-07 | 2020-07-31 | 杭州江润科技有限公司 | Middle pier anti-collision system and construction method |
| CN112982160A (en) * | 2021-04-12 | 2021-06-18 | 中铁十局集团第八工程有限公司 | Road and bridge guardrail device for crossing existing business railway line and construction method |
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| CN2554225Y (en) * | 2002-06-17 | 2003-06-04 | 云南玉元公路建设指挥部 | Seat type road guardrail |
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| CN108346368A (en) * | 2018-04-17 | 2018-07-31 | 广西城市建设学校 | Municipal road bridge builds teaching facilities |
| CN108824272A (en) * | 2018-06-25 | 2018-11-16 | 武汉理工大学 | A kind of combined type low profile guardrail |
| CN111472305A (en) * | 2018-12-07 | 2020-07-31 | 杭州江润科技有限公司 | Middle pier anti-collision system and construction method |
| CN111472305B (en) * | 2018-12-07 | 2022-04-01 | 杭州江润科技有限公司 | Middle pier anti-collision system and construction method |
| CN109577186A (en) * | 2018-12-17 | 2019-04-05 | 山东汇通建设集团有限公司 | Overpass anti-collision wall crack resistence structure and construction |
| CN110093946A (en) * | 2019-05-10 | 2019-08-06 | 中铁第四勘察设计院集团有限公司 | A kind of underground structure bottom plate-side wall node structure and construction method |
| CN112982160A (en) * | 2021-04-12 | 2021-06-18 | 中铁十局集团第八工程有限公司 | Road and bridge guardrail device for crossing existing business railway line and construction method |
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