CN104153311A - Road guardrail reinforcing device and reinforcing method thereof - Google Patents
Road guardrail reinforcing device and reinforcing method thereof Download PDFInfo
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- CN104153311A CN104153311A CN201410409458.2A CN201410409458A CN104153311A CN 104153311 A CN104153311 A CN 104153311A CN 201410409458 A CN201410409458 A CN 201410409458A CN 104153311 A CN104153311 A CN 104153311A
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Abstract
The invention relates to a road guardrail reinforcing device which comprises a hollow-out basic guardrail vertical column and a wave-shaped guardrail plate and is characterized in that a reinforcing hole is drilled towards a foundation along the center of the hollow-out basic guardrail vertical column, a reinforcing cage is arranged in the reinforcing hole and the hollow-out basic guardrail vertical column, the reinforcing cage is filled with a concrete block, and a heightened guardrail vertical column and a protective beam are arranged on the basic guardrail vertical column. The characteristics of a concrete filled steel tube are made full use of, an encased structure is composed of poured reinforced concrete and the vertical columns, the cross section character of the vertical columns is changed, the capacity of resistance to bending and tensile stress of the vertical columns is enhanced, deep bury of the basic guardrail vertical column is reinforced by the reinforced concrete in the reinforcing hole, and the anti-collision capacity of the vertical column is enhanced. The height of a guiderail can be effectively increased through the protective beam, a vehicle is prevented from rushing out of the guardrail, the protective beam and the wave-shaped guardrail plate bear force together, and therefore, the shortcoming of insufficient anti-collision capacity caused by the insufficient thickness of the guardrail plate is made up. By means of the upgrading and transformation measure, a user does not need to discard a basic guardrail component, original materials are utilized to the largest extent, and an old pulled-out guardrail also can be upgraded and transformed to be used in a new high way, so that cost and waste are reduced.
Description
Technical field
The invention belongs to expressway barrier maintenance technology field, particularly relate to a kind of highway barrier bracing means and reinforcement means thereof.
Background technology
Since the nineties in last century, China's expressway construction fast development, by the end of the year 2006, the total mileage open to traffic of China's speedway oneself nearly 4.5 ten thousand kilometers.These speedways are most of according to the regulation in < < expressway traffic safety facilities design and construction technical specification (JTJ074) the > > of publication in 94 years, the anti-collision level that is speedway ordinary accident or major accident section adopts A, Am standard, crashproof ability is 93 kilojoules, A level trackside corrugated beam barrier wherein, column external diameter 114mm used, wall thickness 4.5mm, buried depth 1100mm.The thickness of guardrail board is 3mm, and obstruction block wall thickness is 3mm.The distance in guardrail inner side to shoulder is 500mm.
But along with new criteria < < highway traffic safety facilities design standard > >, < < highway traffic safety facility construction technique normalizing > > is in the issuing and implementation on September 1st, 2006, the degree of protection of freeway guardrail also improves thereupon, the A level trackside corrugated beam barrier newly-built and reconstruction speedway adopts, crashproof ability is 160 kilojoules, the canonical form of column used is: external diameter 140mm, wall thickness 4.5mm, buried depth 1400mm.The thickness of guardrail board is 4mm, and obstruction block wall thickness is 4.5mm.The distance in guardrail inner side to shoulder is 750mm.
By the ordinary construction of new and old roadside barrier is contrasted to discovery, the 1100mm of the buried depth of fence upright from old standard becomes the 1400mm in new criteria, the 114mm of guardrail aperture from old standard becomes the 140mm in new criteria, the 3mm of the thickness of corrugated guardrail plate from old standard becomes the 4mm in new criteria, the 3mm of obstruction block wall thickness from old standard becomes the 4.5mm in new criteria, the distance in guardrail inner side to shoulder also becomes 750mm from 500mm, be that new guardrail increases the stability of fence upright soil matrix and column anchoring point by increasing effective buried depth and the point of impingement to the distance between shoulder, by increasing fence upright diameter, wave beams thickness of slab and obstruction block wall thickness increase the shearing resistance tensile property of guardrail, to reach the object that promotes crashworthiness.
Old guardrail is also faced with highly not enough problem, in speedway lifetime, repeatedly overlay (or cover) reinforcement maintenance to the serious road of disease.Overlay cover maintenance measure, cause express highway pavement constantly to increase, corrugated beam barrier and the decline of road surface relative altitude, particularly repeatedly after cover, guardrail and road surface relative altitude wretched insufficiency.
Known in sum, manyly according to the guardrail of the existing speedway of old Specification Design, do not met the requirement of new criteria.Rough estimate, the section of 4.5 ten thousand highway high speed highways 75% has adopted corrugated beam barrier, and two-way bilateral is built.All calculate by 4m at roadside barrier column and median barrier column interval.In the built speedway of China, the old fence upright of the Φ 114 making has 4.5 * 75% * 4 * 1000/4=3375 (ten thousand); The old guardrail board of using has 4.5 * 75% * 4=13.5 (ten thousand prolong kilometer).If these old fence uprights and old guardrail board are discarded, newer guardrail are installed, will increase a large amount of construction costs, cause raw-material waste.Referring to Fig. 4 is the structure of existing basic protective guard, therefore, utilize original old guardrail, by to its upgrading, it is reached and even surmount the requirement of new guardrail properties, not only construction cost be can significantly save, the completion pollution, the energy waste that in new material production and old material processed process, cause also can be reduced.
Meanwhile, the underground buried depth of old fence upright part is because long-time water and soil corrodes, and cannot maintenance, has certain corrosion phenomenon, and column buried depth part intensity is the problem of Shortcomings also.
Summary of the invention
The present invention provides a kind of in the situation that not abolishing former basic protective guard for solving the technical problem existing in known technology, basis protective guard carries out upgrading, can reach highway barrier bracing means and the reinforcement means thereof of new criteria to the requirement of degree of protection.
The technical scheme that the present invention takes for the technical problem existing in solution known technology is:
A kind of highway barrier bracing means, comprise and bury the corrugated guardrail plate that is contained in the basis of the hollow type on ground fence upright outside speedway, is arranged on fence upright speedway side by securing member, it is characterized in that: the middle mind-set ground along hollow type basis fence upright sets reinforced hole, the depth distance fence upright basal cross section 100mm～600mm of reinforced hole; In reinforced hole and basic guardrail centre bore, lay reinforcing cage, in described reinforcing cage, be filled with concret block, longitudinal height of described reinforcing cage is 1000mm～2000mm, and the bottom surface of reinforcing cage contacts with reinforced hole bottom surface;
Described reinforcing cage comprise longitudinal reinforcement and and stirrup, above-mentioned reinforcing cage be shaped as circular layout, and described longitudinal reinforcement employing unsymmetric structure, near the spacing between the adjacent longitudinal reinforcement of roadbed center position, be less than near the spacing between the adjacent longitudinal reinforcement of shoulder direction;
On above-mentioned longitudinal reinforcement, bundle stirrup, the spacing between adjacent stirrup is 50mm～200mm; Stirrup in longitudinal reinforcement bottom is less than the spacing between superposed stirrup;
Also include and extend hollow type basis fence upright apart from the fence upright that increases of roadbed upper level, the described fence upright that increases is provided with installation slotted hole, described increasing in the upper port that guardrail is inserted into above-mentioned hollow type basis fence upright, installing hole on it is corresponding with the securing member that corrugated guardrail plate is installed, securing member is installed in above-mentioned installing hole, and by hollow type basis fence upright, increase fence upright and corrugated guardrail plate is fastening as a whole;
Described above-mentioned upper end of increasing fence upright is provided with bending part to roadbed center position, at the adjacent bending part that increases fence upright, by securing member, protection crossbeam is installed.
The present invention can also adopt following technical measures:
The described radius that is positioned at the reinforced hole in basic guardrail column lower end cross section is greater than the radius 50mm～100mm of basic fence upright,
Between described corrugated guardrail plate and hollow type basis fence upright, be provided with obstruction block.
The excircle of described reinforcing cage is provided with positioning supports, and the external diameter of positioning supports equals the internal diameter of reinforced hole.
Reinforcement means based on above-mentioned highway barrier bracing means, the steps include:
1), make reinforcing cage, selecting the diameter of longitudinal reinforcement is 4mm～16mm; Selecting the diameter of stirrup is 4mm～16mm; According to the spacing near between the adjacent longitudinal reinforcement of roadbed center position, be less than the structural configuration near the spacing between the adjacent longitudinal reinforcement of shoulder direction; Stirrup is tied up in the requirement that is 50mm～200mm according to the spacing between adjacent stirrup;
2), remove upright post cap, corrugated guardrail plate, the obstruction block of hollow type basis fence upright;
3), select applicable auger to beat reinforced hole along the center line of hollow type basis fence upright; The depth distance fence upright basal cross section 100mm～600mm of reinforced hole; The location that soil condition is poor, faces the one-sided 50mm～100mm that widens of reinforced hole at basic guardrail column lower end;
4), clear up basic fence upright and reinforced hole, first clear up the earth in above-mentioned basic stand column and reinforced hole; Then the anvil cinder of basic fence upright inwall is cleaned;
5), place step 1) in the reinforcing cage of well in advance along basic fence upright, vertically put into the bottom to reinforced hole, and adjust direction, and pre-fix by positioning supports, be i.e. the longitudinal reinforcement comparatively intensive roadbed side that is placed on of arranging;
6), from the upper port of basic fence upright to joints cement concrete in reinforcing cage, and guarantee the dense state of cement concrete;
7), the upper port plug-in mounting at each basic fence upright increases fence upright, adjust direction simultaneously, make the bending part that increases fence upright upper end towards roadbed side, and install firm, corrugated guardrail plate and obstruction block are installed simultaneously, adjust simultaneously and adjacently increase the height of fence upright and be consistent, the height of measuring distance roadbed meets construction requirement simultaneously; After adjustment, securing member is fastening;
8), at the bending part that increases fence upright, by securing member, protection crossbeam is installed.
Advantage and good effect that the present invention has are: the present invention takes full advantage of steel tube concrete soil characteristics.In basic fence upright, build steel concrete, and partly make and expand basis exceeding column, strengthen the stability of column; The steel concrete of building and column form encased structures, have changed the cross section character of column, have strengthened the ability of the bending resistance tensile stress of column, strengthen the crashproof ability of column.Protection crossbeam is installed at the top of basis fence upright, can effectively increase the height of protective guard, prevents that vehicle from going out guardrail, and protection crossbeam and corrugated guardrail plate are jointly stressed, have made up the defect of the crashproof scarce capacity bringing because of guardrail board thickness deficiency.This upgrading measure, need not abolish guardrail component, farthest utilizes original material, also can after extracting old guardrail upgrading, use in new speedway, reduces expenses, and cuts the waste.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is reinforcement cage structure schematic diagram;
Fig. 3 is reinforced hole bottom enlarged configuration schematic diagram;
Figure 4 and 5 are existing basic guardrail structure schematic diagrames.
In figure: 1, basic fence upright; 2, securing member; 3, corrugated guardrail plate; 4, reinforced hole; 5, reinforcing cage; 5-1 longitudinal reinforcement; 5-2 stirrup; 5-3, positioning supports; 6, concret block; 7, increase fence upright; 7-1, installing hole; 7-2, bending part; 8, securing member; 9, protection crossbeam; 10, obstruction block.
The specific embodiment
For further understanding summary of the invention of the present invention, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1 and Fig. 2, a kind of highway barrier bracing means, comprises burying being contained in the basis of the hollow type on ground fence upright 1 outside speedway, so-called basic protective fence buckstay can be thought old fence upright, also newly-built fence upright; By securing member 2, be arranged on the corrugated guardrail plate 3 of fence upright speedway side, along the middle mind-set ground of hollow type basis fence upright, set reinforced hole 4, the depth distance fence upright basal cross section of reinforced hole is 100mm～600mm; In reinforced hole and hollow fence upright, lay reinforcing cage 5, be filled with concret block 6 in described reinforcing cage, longitudinal height of described reinforcing cage is 1000mm～2000mm, and the bottom surface of reinforcing cage contacts with reinforced hole bottom surface;
Described reinforcing cage 5 comprise longitudinal reinforcement 5-1 and and stirrup 5-2, described reinforcing cage be shaped as circular configuration, and described longitudinal reinforcement adopts unsymmetric structure, near the spacing between the adjacent longitudinal reinforcement of roadbed center position, be less than near the spacing between the adjacent longitudinal reinforcement of shoulder direction;
On above-mentioned longitudinal reinforcement, bundle stirrup, the spacing between adjacent stirrup is 50mm～200mm; Stirrup in longitudinal reinforcement bottom is less than the spacing between superposed stirrup;
The excircle of described reinforcing cage is provided with positioning supports 5-3, and the external diameter of positioning supports equals the internal diameter of reinforced hole.
Also include and extend hollow type basis fence upright and increase fence upright 7 apart from roadbed upper level, the described fence upright that increases is provided with installation slotted hole 7-1, described increasing in the upper port that guardrail is inserted into above-mentioned hollow type basis fence upright, installing hole on it is corresponding with the securing member that corrugated guardrail plate is installed, securing member is installed in above-mentioned installing hole, and by hollow type basis fence upright, increase fence upright and corrugated guardrail plate is fastening as a whole;
Described above-mentioned upper end of increasing fence upright is provided with bending part 7-2 to roadbed center position, at the adjacent bending part that increases fence upright, by securing member 8, protection crossbeam 9 is installed.
Refer to Fig. 3, meet the requirement of different geology in order to meet this bracing means, the soft location of footing for example, is greater than the radius 50mm～100mm of basic fence upright at the described radius that is positioned at the reinforced hole in basic guardrail column lower end cross section,
If above-mentioned former basic protective guard does not have obstruction block, in order to improve crashproof intensity, between described corrugated guardrail plate and hollow type basis fence upright, be provided with obstruction block 10; If former basic protective guard with obstruction block, can continue after reinforcing to retain this obstruction block 10, as Fig. 4 and Fig. 5.
Of the present invention to the upgrading method of basic protective guard and device, not abolish under the condition of the original member of guardrail, the guardrail needing reinforcement is carried out to upgrading, its means that mainly adopt are to utilize the steel concrete block of building to realize, concret block herein plays a key role, be mainly manifested in following two convenience, the one, expand and native around contact area, increase the uplift resistance of basic fence upright, prevent that basic fence upright is because the displacement of the not enough integral inclination of uplift resistance is excessive or sticked up.The 2nd, strengthen the ability that the bending resistance in basic fence upright cross section is drawn.With the protection crossbeam 9 of installing, increase height and the intensity of guardrail, to meet safe distance more than roadbed.
When accident vehicle collision guardrail, under the effect of impact force, corrugated guardrail plate and protection crossbeam deform and absorption portion energy, and protection crossbeam can be shared a part of impact force, reduces the stressed of guardrail board, improves the crashproof ability of guardrail integral body.Because protection crossbeam is arranged on basic fence upright top, effectively raise the height of basic protective guard, prevent that vehicle from going out guardrail and more serious accident occurs.
Impact force is better distributed on a few pile foundation fence uprights that close on by protection crossbeam, basis fence upright is stressed, meeting run-off the straight or flexural deformation, what basis fence upright can be subject to Earth Pressure Around is used for resisting tilt displacement, although the inadequate code requirement of column buried depth, but the steel concrete block pouring into has increased the contact area with surrounding soil, increased the uplift resistance of basic fence upright, basic fence upright is had to well firm effect, while making basic fence upright be subject to excessive impact force, be difficult for sticking up from soil.Steel concrete block and basic fence upright form new structure---encased structures.Change the cross section character of basic fence upright, can bear larger tensile stress and Moment.Therefore, basic fence upright frangibility not when being subject to greater impact power.
The present invention takes full advantage of steel tube concrete soil characteristics.Steel concrete is built in fence upright in basis, and partly makes and expand basis exceeding column, strengthens the stability of column; The steel concrete of building and column form encased structures, have changed the cross section character of basic fence upright, have strengthened the ability of the bending resistance tensile stress of basic fence upright, strengthen the crashproof ability of basic fence upright.Protection crossbeam is installed at the top of basis fence upright, can effectively increase the height of guardrail, has made up the deficiency of the little and crashproof ability of original waveform guardrail board thickness, has also increased the height of basic fence upright simultaneously.Prevent that vehicle from going out guardrail, protection crossbeam and guardrail board are jointly stressed, have made up the defect of the crashproof scarce capacity bringing because of guardrail board thickness deficiency.
This upgrading measure, need not abolish guardrail component, farthest utilizes original material, also can after extracting old guardrail upgrading, use in new speedway, reduces expenses, and cuts the waste.
When basic fence upright is collided power run-off the straight, the existence of concret block increases the soil pressure effect of surrounding soil to basic fence upright, increase basic guardrail Column stability and crashproof ability, and the structure of the basic fence upright reinforced concrete combination Cheng Xin inner with it has steel tube concrete soil characteristics, can effectively resist Moment, make column be not easy to be fractureed.
Specifically, in implementation method, a kind of reinforcement means of above-mentioned highway barrier bracing means, the steps include:
1), make reinforcing cage 5, selecting the diameter of longitudinal reinforcement is 4mm～16mm; Selecting the diameter of stirrup is 4mm～16mm; According to the spacing near between the adjacent longitudinal reinforcement of roadbed center position, be less than the structural configuration near the spacing between the adjacent longitudinal reinforcement of shoulder direction; Stirrup is tied up in the requirement that is 50mm～200mm according to the spacing between adjacent stirrup;
2), remove upright post cap 10, corrugated guardrail plate 3, the obstruction block 10 of hollow type basis fence upright 1;
3), select applicable auger to beat reinforced hole along the center line of hollow type basis fence upright; The depth distance fence upright basal cross section 100mm～600mm of reinforced hole; The location that soil condition is poor, faces the one-sided 50mm～100mm that widens of reinforced hole at basic guardrail column lower end;
4), clear up basic fence upright and reinforced hole, first clear up the earth in above-mentioned basic stand column and reinforced hole; Then the anvil cinder of basic fence upright 1 inwall is cleaned;
5), placement step 1), the reinforcing cage 5 of well in advance is vertically put into the bottom to reinforced hole along basic fence upright, and adjust direction, and pre-fix by positioning supports, after casting complete, do the positioning supports pre-fixing and stay within it, be i.e. the longitudinal reinforcement comparatively intensive roadbed side that is placed on of arranging;
6), from the upper port of basic fence upright to joints cement concrete in reinforcing cage, and guarantee the dense state of cement concrete;
7), the upper port plug-in mounting at each basic fence upright increases fence upright, adjust direction simultaneously, make the bending part that increases fence upright upper end towards roadbed side, and install firm, corrugated guardrail plate and obstruction block are installed simultaneously, adjust simultaneously and adjacently increase the height of fence upright and be consistent, the height of measuring distance roadbed meets construction requirement simultaneously; After adjustment, securing member is fastening;
8), at the bending part that increases fence upright, by securing member, protection crossbeam is installed.
Upgrading type guardrail proposed by the invention, can make original material make full use of in sum, can use new material to improve the cross section performance of former member, makes its integral body meet the requirement of new criteria standard.
Basis fence upright the most easily occur in that maximal bending moment section fractures or due to Earth Pressure Around deficiency displacement excessive or stick up, cause vehicle to go out guardrail and more great accident occur.By build the basic principle that reinforced concrete member strengthens in basic fence upright, be: by increasing the effect of Earth Pressure Around, improve the stability of column, by changing the cross section character of maximal bending moment section, increase the ability of column opposing moment of flexure, improve the intensity of column.
Corrugated beam barrier is in protection accident vehicle, and the height of basic fence upright is not enough, and corrugated guardrail plate thickness is not enough, so its crashproof poor ability, accident vehicle is easily crossed guardrail and more serious accident is occurred.Increasing the horizontal beam action of protection is, has both increased the height of guardrail, has increased again the crashproof ability of guardrail.
Protective guard bracing means involved in the present invention and method thereof also can be used for the trackside Dangerous Areas such as high embankment, high retaining wall, wave beams and concrete guardrail changeover portion etc. need to carry out to corrugated beam barrier the section of upgrading.
The above is only to preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, every foundation technical spirit of the present invention is to any simple modification made for any of the above embodiments, and for example equivalent variations and modification, all belongs in the scope of technical solution of the present invention.
Claims (5)
1. a highway barrier bracing means, comprise and bury the corrugated guardrail plate that is contained in the basis of the hollow type on ground fence upright outside speedway, is arranged on fence upright speedway side by securing member, it is characterized in that: the middle mind-set ground along hollow type basis fence upright sets reinforced hole, the depth distance fence upright basal cross section 100mm～600mm of reinforced hole; In reinforced hole and basic guardrail centre bore, lay reinforcing cage, in described reinforcing cage, be filled with concret block, longitudinal height of described reinforcing cage is 1000mm～2000mm, and the bottom surface of reinforcing cage contacts with reinforced hole bottom surface;
Described reinforcing cage comprise longitudinal reinforcement and and stirrup, above-mentioned reinforcing cage be shaped as circular layout, and described longitudinal reinforcement employing unsymmetric structure, near the spacing between the adjacent longitudinal reinforcement of roadbed center position, be less than near the spacing between the adjacent longitudinal reinforcement of shoulder direction;
On above-mentioned longitudinal reinforcement, bundle stirrup, the spacing between adjacent stirrup is 50mm～200mm; Stirrup in longitudinal reinforcement bottom is less than the spacing between superposed stirrup;
Also include and extend hollow type basis fence upright apart from the fence upright that increases of roadbed upper level, the described fence upright that increases is provided with installation slotted hole, described increasing in the upper port that guardrail is inserted into above-mentioned hollow type basis fence upright, installing hole on it is corresponding with the securing member that corrugated guardrail plate is installed, securing member is installed in above-mentioned installing hole, and by hollow type basis fence upright, increase fence upright and corrugated guardrail plate is fastening as a whole;
Described above-mentioned upper end of increasing fence upright is provided with bending part to roadbed center position, at the adjacent bending part that increases fence upright, by securing member, protection crossbeam is installed.
2. highway barrier bracing means according to claim 1, is characterized in that: described in be positioned at the reinforced hole in basic guardrail column lower end cross section radius be greater than the radius 50mm～100mm of basic fence upright.
3. according to the arbitrary described highway barrier bracing means of claim 1 to 2, it is characterized in that: between described corrugated guardrail plate and hollow type basis fence upright, be provided with obstruction block.
4. highway barrier bracing means according to claim 1, is characterized in that: the excircle of described reinforcing cage is provided with positioning supports, and the external diameter of positioning supports equals the internal diameter of reinforced hole.
5. a reinforcement means for above-mentioned highway barrier bracing means, the steps include:
1), make reinforcing cage, selecting the diameter of longitudinal reinforcement is 4mm～20mm; Selecting the diameter of stirrup is 4mm～16mm; According to the spacing near between the adjacent longitudinal reinforcement of roadbed center position, be less than the structural configuration near the spacing between the adjacent longitudinal reinforcement of shoulder direction; Stirrup is tied up in the requirement that is 50mm～200mm according to the spacing between adjacent stirrup;
2), remove upright post cap, corrugated guardrail plate, the obstruction block of hollow type basis fence upright;
3), select applicable auger to beat reinforced hole along the center line of hollow type basis fence upright; The depth distance fence upright basal cross section 100mm～600mm of reinforced hole; The location that soil condition is poor, faces the one-sided 50mm～100mm that widens of reinforced hole at basic guardrail column lower end;
4), clear up basic fence upright and reinforced hole, first clear up the earth in above-mentioned basic stand column and reinforced hole; Then the anvil cinder of basic fence upright inwall is cleaned;
5), place step 1) in the reinforcing cage of well in advance along basic fence upright, vertically put into the bottom to reinforced hole, and adjust direction, and pre-fix by positioning supports, be i.e. the longitudinal reinforcement comparatively intensive roadbed side that is placed on of arranging;
6), from the upper port of basic fence upright to joints cement concrete in reinforcing cage, and guarantee the dense state of cement concrete;
7), the upper port plug-in mounting at each basic fence upright increases fence upright, adjust direction simultaneously, make the bending part that increases fence upright upper end towards roadbed side, and install firm, corrugated guardrail plate and obstruction block are installed simultaneously, adjust simultaneously and adjacently increase the height of fence upright and be consistent, the height of measuring distance roadbed meets construction requirement simultaneously; After adjustment, securing member is fastening;
8), at the bending part that increases fence upright, by securing member, protection crossbeam is installed.
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| CN107386317A (en) * | 2017-07-03 | 2017-11-24 | 浙江大学城市学院 | Foam concrete lightweight barricade and construction method are excavated after a kind of first precompressed of deep ultra-soft soil |
| CN108035280A (en) * | 2018-01-17 | 2018-05-15 | 张玉建 | A kind of New Concrete pedestal safety barrier apparatus |
| CN109295896A (en) * | 2018-11-27 | 2019-02-01 | 成都工业学院 | Fork road anticollision device, collision-prevention device |
| CN110749431A (en) * | 2019-11-04 | 2020-02-04 | 北京华路安交通科技有限公司 | Method for detecting anchoring strength of guardrail upright post and reinforcing structure |
| CN112942195A (en) * | 2021-02-02 | 2021-06-11 | 赵龙龙 | Guardrail for highway |
| CN114197351A (en) * | 2022-01-17 | 2022-03-18 | 贵州省交通规划勘察设计研究院股份有限公司 | Highway concrete guardrail heightening and reinforcing structure and method thereof |
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| CN104153311B (en) | 2016-08-24 |
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Effective date of registration: 20170419 Address after: 050021 Shijiazhuang Province, Qiaodong District, Hebei construction of South Street, No. 1, building 3, unit 101, No. 70 Patentee after: Zhu Minqing Address before: 300401 Hongqiao District, Hebei Institute of technology, dormitory building, North building, No. 13, No. Patentee before: Cui Hongjun |
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