CN102879169A - Field dynamic load testing method for collision resistance and safety of highway corrugated beam barriers - Google Patents
Field dynamic load testing method for collision resistance and safety of highway corrugated beam barriers Download PDFInfo
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- CN102879169A CN102879169A CN2012103826160A CN201210382616A CN102879169A CN 102879169 A CN102879169 A CN 102879169A CN 2012103826160 A CN2012103826160 A CN 2012103826160A CN 201210382616 A CN201210382616 A CN 201210382616A CN 102879169 A CN102879169 A CN 102879169A
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- 230000008878 coupling Effects 0.000 claims abstract description 46
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 29
- 238000005259 measurement Methods 0.000 claims abstract description 23
- 238000001514 detection method Methods 0.000 claims description 13
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Abstract
The invention discloses a field dynamic load testing method for collision resistance and safety of highway corrugated beam barriers. The method comprises the steps of selecting a collision point; arranging a steel coupling block, a high-speed camera and a displacement measurement scale; colliding a weight against the steel coupling block to obtain measurement results and the like. According to the field dynamic load testing method for collision resistance and safety of highway corrugated beam barriers, safety performances of highway corrugated beam barriers can be tested in the engineering field, and the testing method is not limited by places and highway conditions; and not only the implementation cost is low, but also the testing operation is convenient and rapid, the testing efficiency is high, and testing results are accurate and reliable. The field dynamic load testing method can help highway operation management units grasp security performances of traffic safety facilities of governed highway sections, and can also serve as an approach for quality supervision units to supervise and check barrier construction quality randomly.
Description
Technical field
The invention belongs to the highway communication technical field, specifically, particularly a kind of road waved guardrail security performance on-site measurement method is mainly used in the in-site measurement of road waved guardrail security performance.
Background technology
Highway in China is when promoting the national economy fast development, and higher road traffic accident incidence and mortality ratio have brought safely many adverse effects also for the continual and steady and the people's lives and property of rapid development of economy, society.Especially the barrier type of highway is take corrugated beam steeled protection fence as main for highway, and many serious traffic hazards all betide vehicle and rush open guardrail, and are run-off-road.So the security performance of guardrail has great significance for the protection traffic safety.
The country that external highway communication is flourishing just gets down to the research of guardrail at the initial stage that highway occurs.These countries mainly contain the U.S., France, Britain, Germany, Japan etc.A large amount of data and rich experience have been accumulated at aspects such as the guardrail scope of application, structural design, functional requirement, construction and installation.
The aspect such as design, production and construction that China began for freeway guardrail in the enforcement period of the seventh five-year plan conducts a research.Research Institute of Highway, Ministry of Communications has carried out systematic study since 1984 to corrugated beam barrier.1992, drafted " corrugated beam barrier real vehicle collision test scheme ", carry out more than a year subsequently for the first time Task of real vehicle full size impact test, and set up a whole set of experimental technique and facility.At the beginning of 1994, China has formulated industry standard (JTJ 074-94) " expressway traffic safety facilities design and construction technical manual ".2000 year traffic sections write and have issued " highway three corrugated beam steeled protection fences " industry standard and apply, and are mainly used in the landform disadvantages such as the high highway section of heavy goods vehicles, large car ratio and mountainous area highway.
In recent years, domesticly formulating many new industry standards, national standard aspect the highway traffic safety facility, perhaps original standard is revised, as " highway traffic safety facilities design detailed rules and regulations " (JTGD81-2006), " freeway guardrail security performance evaluation criterion " (JTG/TF83-01-2004) and " highway traffic safety facility construction technique normalizing " (JTG F71-2006) etc.These standards, standard are since implementing, under the common promotion of construction unit, supervisor, unit in charge of construction and traffic quality supervision and inspection body, obtained generally promoting and extensively adopting in the whole nation, become highway barrier and hand over (completing) worker to check and accept the major technique foundation of the work such as grade estimation, obtained the approval of industry.
Above-mentioned standard is based upon in the ecotopia the evaluation of highway barrier security performance, has generally directive significance for the design and construction of highway barrier.In Practical Project, after guardrail installs even use security performance after a period of time also to be subject to the impact of the factors such as road line style (flat, vertical), stability of foundation, installation quality, the security performance appraisal procedure during this and technology also belong to blank.Almost the annual domestic vehicle that all can occur is repeatedly crossed the reality that guardrail causes major traffic accidents, also has higher requirement with assessment technology to the security performance detection of highway in China guardrail from the another one angle.
At present, the security performance detection for highway barrier mainly contains full-scale crash test method and computer emulation method two classes.Although the full-scale crash test method is acknowledged as the most direct and effective method, can only carry out in the laboratory, and be destructive test, experimental cost is high, and the result of experiment is difficult to the guardrail security performance of engineering site is assessed.Although computer simulation emulation has higher theory directive significance, the check that still must obtain putting into practice with the anastomose property of real road security system.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of method that the road waved guardrail security performance is detected at engineering site.
Technical scheme of the present invention is as follows: the on-the-spot dynamic load detection method of a kind of road waved guardrail anti-collision safety may further comprise the steps:
1) point midway of selecting corrugated beam barrier (1) to be positioned between two root posts (2) is rum point, and steel coupling block (3) is installed at the rum point place, and this steel coupling block (3) is positioned on the inboard side of corrugated beam barrier (1);
2) in steel coupling block (3) top high-speed camera (8), the position that is impacted of the alignment lens corrugated beam barrier (1) of this high-speed camera (8) are set;
3) next door of the rum point on corrugated beam barrier (1) installation position shift measurement scale (9), and make displacement measurement scale (9) and corrugated beam barrier (1) perpendicular;
4) strike on the steel coupling block (3) with weight;
The displacement situation of the corrugated beam barrier (1) that the dynamic image of 5) taking according to high-speed camera (8) and displacement measurement scale (9) are measured, can learn deformation extent and the displacement of corrugated beam barrier (1), with deformation extent and displacement and the comparison of canonical reference value that obtains, can judge the anti-collision safety performance of this corrugated beam barrier (1).
Adopt above technical scheme, weight is by steel coupling block bump corrugated beam barrier, high-speed camera is aimed at the impingement position of corrugated beam barrier and is taken, and effect is degree and the displacement that helps to judge when corrugated beam barrier is impacted, and concrete displacement can record by the displacement measurement scale.Impingement position arranges the steel coupling block, so that bump strength is evenly distributed to the section of whole corrugated beam barrier, the result who detects like this is truer, accurate.The invention process cost is cheap, it is not only convenient but also quick to detect operation, and it is short to detect the time that spends, can satisfy the on-the-spot needs that detect in real time of corrugated beam barrier security performance of different location, different road conditions, can help highway operation management unit to grasp the safety guarantee performance of jurisdiction road section traffic volume safety installations, also can be used as a kind of means that quality supervision unit exercises supervision and spot-check the guardrail construction quality.
Described steel coupling block (3) is box structure, has wave shape groove at steel coupling block (3) towards the surface of corrugated beam barrier (1), and the shape of this wave shape groove and corrugated beam barrier (1) adapts.Steel coupling block processing and fabricating is easy on the one hand for above structure, and cost is low; On the other hand, can guarantee that the be impacted each several part at place of corrugated beam barrier is stressed evenly, with accuracy and the reliability of further raising testing result.
Described steel coupling block (3) is by articulating or the mode of clamping is fixedly mounted on the corrugated beam barrier (1), and the dismounting of steel coupling block is all very convenient like this, and it is firm to guarantee that the steel coupling block is connected with corrugated beam barrier.
Described weight is steel ball (6), and this steel ball (6) is lifted on the inboard of corrugated beam barrier (1), and near steel coupling block (3); Steel ball (6) is freely sagging when initial, and steel ball (6) and steel coupling block (3) are on the same level height.Adopt steel ball as rammer, selection is convenient, and processing and fabricating is easy; The strength of above structural steel ball impact on the steel coupling block is concentrated, and makes the steel coupling block equably impact be passed to corrugated beam barrier, thereby guarantees the accuracy of testing result.
At the highway that described corrugated beam barrier (1) is inboard the first column (4) is installed, the upper end of this first column (4) is fixed with vertical with it first crossbeam (5), in the below of first crossbeam (5) steel ball (6) is set, steel ball (6) fixes with the lower end of swing arm (7), and the upper end of swing arm (7) is hinged on the cantilever end of first crossbeam (5).The mounting structure of above scheme one side steel ball is simple, is conducive to assemble fast at the scene, when reducing experimentation cost, can improve the efficient that detects; On the other hand, can guarantee that by the swing mode steel ball motion flexibly, reliably.
Described high-speed camera (8) is installed on an end of second cross beam (10), the upper end of the other end of second cross beam (10) and the second column (11) fixes, the second column (11) is perpendicular with second cross beam (10), and the second column (11) lower end is fixed on the highway.High-speed camera is installed by other crossbeam and column, and in the process of weight bump steel coupling block, it is static that high-speed camera keeps, and can not affect shooting effect because of shake like this.
Described displacement measurement scale (9) is installed in the upper end of the 3rd column (12), and the 3rd column (12) is perpendicular with displacement measurement scale (9), and the lower end of the 3rd column (12) is fixed on the highway.The displacement measurement scale does not contact with corrugated beam barrier, the deflection that can the Measurement accuracy corrugated beam barrier be impacted.
Beneficial effect: the present invention can detect in the security performance of engineering site to road waved guardrail, is not subjected to the restriction of place, road conditions, and not only implementation cost is cheap, and detects convenient to operationly, and detection efficiency is high, testing result accurately, reliable.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is collision theory figure of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
As shown in Figure 1 and Figure 2, the on-the-spot dynamic load detection method of road waved guardrail anti-collision safety may further comprise the steps:
Embodiment 1
1) selecting the point midway of corrugated beam barrier 1 between two adjacent upright posts 2 is rum point, and steel coupling block 3 is installed at the rum point place, and this steel coupling block 3 is positioned on the side of corrugated beam barrier 1 inboard (towards a side of highway).Steel coupling block 3 is box structure, have wave shape groove at steel coupling block 3 towards the surface of corrugated beam barrier 1, the section of the shape size of this wave shape groove and corrugated beam barrier 1 adapts, and the medial surface of wave shape groove and steel coupling block 3 is fitted fully.Steel coupling block 3 can be articulated on the corrugated beam barrier 1 by the hook that its upper end arranges, and steel coupling block 3 also can be connected on the corrugated beam barrier 1 by the buckle of its upper and lower side setting.Certainly, as the replacement that is equal to, steel coupling block 3 also can adopt alternate manner to be connected with corrugated beam barrier 1, as long as steel coupling block 3 can be fixed on the corrugated beam barrier 1.
2) on the next door of first crossbeam 5 high-speed camera 8 is set, the position that is impacted of the alignment lens corrugated beam barrier 1 of this high-speed camera 8.Described high-speed camera 8 is installed on an end of second cross beam 10, and the upper end of the other end of second cross beam 10 and the second column 11 fixes, and the second column 11 is perpendicular with second cross beam 10, and the second column 11 lower ends are fixed on the highway.
3) installation position, the rum point on corrugated beam barrier 1 next door shift measurement scale 9, displacement measurement scale 9 can be above corrugated beam barriers 1, also can be below corrugated beam barrier 1.One end of displacement measurement scale 9 is fixed on the upper end of the 3rd column 12, and the 3rd column 12 is perpendicular with displacement measurement scale 9, and the lower end of the 3rd column 12 is fixed on the highway, and displacement measurement scale 9 is perpendicular with corrugated beam barrier 1.
4) strike on the steel coupling block 3 with weight.Described weight is steel ball 6, this steel ball 6 fixes with the lower end of swing arm 7, the upper end of swing arm 7 is hinged on the cantilever end of first crossbeam 5, first crossbeam 5 the other end and the upper end of the first column 4 fix, and first crossbeam 5 and the first column 4 are perpendicular, and the first column 4 is fixed on the highway of corrugated beam barrier 1 inboard, and the first column 4 parallels with the column 2 of guardrail.Can be connected by structures such as bearing or universal joint or pins between described swing arm 7 and the first crossbeam 5, if guarantee swing arm 7 relatively first crossbeam 5 in the perpendicular perpendicular to corrugated beam barrier 1, freely swing.When initial, steel ball 6 is freely sagging, makes steel ball 6 near steel coupling blocks 3, and close distance determines according to actual needs, and steel ball 6 and steel coupling block 3 be on the same level height, and steel ball 6 is over against steel coupling block 3; When detecting, by lifting gear steel ball 6 is risen (lifting process steel ball 6 and swing arm 7 swing clockwise around pin joint such as Fig. 1 of swing arm 7 upper ends), make steel ball 6 and swing arm 7 on the same level face, and swing arm 7 is vertical with corrugated beam barrier 1.Lifting gear can be motor+stayed structure, also can be other similar structure, as long as steel ball 6 and swing arm 7 can be risen to assigned position and firmly stable; Discharge steel ball 6, steel ball 6 falls (steel ball 6 and swing arm 7 are around pin joint such as Fig. 1 counter-clockwise swing of swing arm 7 upper ends) naturally, and steel ball 6 can strike on the steel coupling block 3.
5) process that is impacted of 8 pairs of steel coupling blocks 3 of high-speed camera and corrugated beam barrier 1 is taken, the displacement that shift measurement scale 9 can measured waveform beam guardrail 1 be impacted.The displacement situation of the corrugated beam barrier 1 that the dynamic image of taking according to high-speed camera 8 and displacement measurement scale 9 are measured, can learn deformation extent and the displacement of corrugated beam barrier 1, with deformation extent and displacement and the comparison of canonical reference value that obtains, can judge the anti-collision safety performance of this corrugated beam barrier 1: if the anti-collision safety of the corrugated beam barrier 1 that the deformation extent that obtains and displacement in the scope of canonical reference value, then detect meets the requirements; Otherwise then do not meet.The canonical reference value be in the code test field in strict accordance with behind the standard fabrication and installation corrugated beam barrier, the value that measures according to above-mentioned steps.
Embodiment 2
The step 4 of present embodiment) in, weight is selected casting pig, and this casting pig is striking on the steel coupling block 3 under the effect of catapult-launching gear elastic force.All the other steps of present embodiment are identical with embodiment 1, and therefore not to repeat here.The concrete structure of described catapult-launching gear can be selected existing structure according to actual needs, as long as can provide elastic force to weight.
Embodiment 3
The step 4 of present embodiment) in, weight is selected steel column, and this steel column is striking on the steel coupling block 3 under the effect of draw-gear tractive force.All the other steps of present embodiment are identical with embodiment 1, and therefore not to repeat here.The concrete structure of described draw-gear can be selected existing structure according to actual needs, as long as can provide tractive force to weight.
Although below by reference to the accompanying drawings the preferred embodiments of the present invention are described; but the invention is not restricted to above-mentioned embodiment; above-mentioned embodiment only is schematic rather than determinate; those of ordinary skill in the art is under enlightenment of the present invention; under the prerequisite of aim of the present invention and claim; can make and representing like the multiple types; as change the structure of weight; perhaps change the mode that drives weight bump steel coupling block; perhaps high-speed camera is changed into general video camera etc., such conversion all falls within protection scope of the present invention.
Claims (7)
1. the on-the-spot dynamic load detection method of a road waved guardrail anti-collision safety is characterized in that may further comprise the steps:
1) point midway of selecting corrugated beam barrier (1) to be positioned between two root posts (2) is rum point, and steel coupling block (3) is installed at the rum point place, and this steel coupling block (3) is positioned on the inboard side of corrugated beam barrier (1);
2) in steel coupling block (3) top high-speed camera (8), the position that is impacted of the alignment lens corrugated beam barrier (1) of this high-speed camera (8) are set;
3) next door of the rum point on corrugated beam barrier (1) installation position shift measurement scale (9), and make displacement measurement scale (9) and corrugated beam barrier (1) perpendicular;
4) strike on the steel coupling block (3) with weight;
The displacement situation of the corrugated beam barrier (1) that the dynamic image of 5) taking according to high-speed camera (8) and displacement measurement scale (9) are measured, can learn deformation extent and the displacement of corrugated beam barrier (1), with deformation extent and displacement and the comparison of canonical reference value that obtains, can judge the anti-collision safety performance of this corrugated beam barrier (1).
2. the on-the-spot dynamic load detection method of road waved guardrail anti-collision safety according to claim 1, it is characterized in that: described steel coupling block (3) is box structure, have wave shape groove at steel coupling block (3) towards the surface of corrugated beam barrier (1), the shape of this wave shape groove and corrugated beam barrier (1) adapts.
3. the on-the-spot dynamic load detection method of road waved guardrail anti-collision safety according to claim 1 and 2 is characterized in that: described steel coupling block (3) is by articulating or the mode of clamping is fixedly mounted on the corrugated beam barrier (1).
4. the on-the-spot dynamic load detection method of road waved guardrail anti-collision safety according to claim 1 and 2, it is characterized in that: described weight is steel ball (6), this steel ball (6) is lifted on the inboard of corrugated beam barrier (1), and near steel coupling block (3); Steel ball (6) is freely sagging when initial, and steel ball (6) and steel coupling block (3) are on the same level height.
5. the on-the-spot dynamic load detection method of road waved guardrail anti-collision safety according to claim 4, it is characterized in that: at the highway that described corrugated beam barrier (1) is inboard the first column (4) is installed, the upper end of this first column (4) is fixed with vertical with it first crossbeam (5), in the below of first crossbeam (5) steel ball (6) is set, steel ball (6) fixes with the lower end of swing arm (7), and the upper end of swing arm (7) is hinged on the cantilever end of first crossbeam (5).
6. according to claim 1 and 2 or the on-the-spot dynamic load detection methods of 5 described road waved guardrail anti-collision safeties, it is characterized in that: described high-speed camera (8) is installed on an end of second cross beam (10), the upper end of the other end of second cross beam (10) and the second column (11) fixes, the second column (11) is perpendicular with second cross beam (10), and the second column (11) lower end is fixed on the highway.
7. the on-the-spot dynamic load detection method of road waved guardrail anti-collision safety according to claim 1, it is characterized in that: described displacement measurement scale (9) is installed in the upper end of the 3rd column (12), the 3rd column (12) is perpendicular with displacement measurement scale (9), and the lower end of the 3rd column (12) is fixed on the highway.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022249121A1 (en) * | 2021-05-27 | 2022-12-01 | Anas S.P.A. | System for testing road protection barriers |
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Cited By (1)
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| WO2022249121A1 (en) * | 2021-05-27 | 2022-12-01 | Anas S.P.A. | System for testing road protection barriers |
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