Decelerations of Passenger Vehicles on Gravel Arrester Beds

Ambrož, Miha; Trajkovski, Jovan; Kunc, Robert

doi:10.3390/su12051761

Cited by 6 publications

(5 citation statements)

References 10 publications

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“…The use of aggregate (19/50 mm range [15]), gravel or crushed, is a common feature for truck arrestor beds, when the wheels must displace well the material and sink inside it, with more favorable results for round aggregates due to its small friction angle [16], [17]. Round aggregates cause a high and quick deacceleration [18]; recent studies for passengers' vehicles have shown values of 0.3 g and 0.9 g for, respectively, coasting vehicles and in braking action [19]. However, in opposite to traditional and efficient use of round gravels in truck arrestor, aggregate spray launched to dissipate energy can be a major concern since one can foresee the aircraft fuselage damage risks due to gravel launchings during an overrun, besides the unavoidable risks for the gears systems.…”

Section: Engineered Materials Arresting Systems For Airportsmentioning

confidence: 99%

Feasibility of pervious concrete as engineered material arresting system for airport runway safety areas

Balbo

2024

Rev. IBRACON Estrut. Mater.

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From the late 1960’s airport engineers developed special paving material for arresting aircraft gears in event of overrun as a partial extension of a runway end safety area. Such pavement surface material, inverting a general concept, should be crushed over the first pass of gear wheels resulting the aircraft to sink and being promptly arrested resulting in abrupt loss of velocity, preferability avoiding loss of lives and injuries as well as with minimum risks for the airplane structural integrity. Herein is analyzed and discussed the possible application of pervious concrete for such a task by simulating an actual situation (Congonhas airport) and understanding the structural effects on the crushable concrete surface layer, pointing out stresses, deflections and required strengths for the material. Simulations regarded the critical aircraft A 320-200 as well as fire-fighters cars over the pavements. Analysis complied to Federal Aviation Administration requirements for non-standard pavement structures as well simulation of stresses trough the finite element method for medium-thickened plates. Compressive stresses along with flexural excessive stresses, besides predictable punching shear stresses allowed to conclude by the feasibility of using low strength pervious concrete as alternative for engineered material to be built as arresting system.

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Section: Engineered Materials Arresting Systems For Airportsmentioning

confidence: 99%

Feasibility of pervious concrete as engineered material arresting system for airport runway safety areas

Balbo

2024

Rev. IBRACON Estrut. Mater.

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“…Incidents on the road often result in unpredictable consequences, including a series of losses involving rescue personnel, vehicles, and road safety measures after the collision [4]. Among these accidents, loss of vehicle control is one of the critical reasons for serious crashes, and vehicle braking problems is one of the 10 key factors leading to the loss of vehicle control [5].…”

Section: Introductionmentioning

confidence: 99%

Development of a Runaway Vehicle Protective Barrier System Using Simulation and Full-Scale Crash Testing

Zhang

Zhao

et al. 2023

Sustainability

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Effective road safety plays an important role in achieving sustainable development goals worldwide. A large number of accidents occur on roads every year, resulting in countless losses of people, vehicles, and roads; as such, the problem of loss of vehicle control has increasingly attracted the attention of scholars. Different vehicle protective measures, such as increasing the friction of tires or applying energy-absorbing materials, have been applied; however, their application is not yet fully effective. In this paper, a flexible protective barrier system is proposed for the protection of runaway vehicles, which can successfully stop the vehicle and ensure the safety of passengers. At the same time, the system can be recycled, which means that costs can be saved, to a certain extent. Accurate finite element simulation and real vehicle tests are conducted to verify the effectiveness of the protective system. The proposed flexible protection system is found to be effective in intercepting different types of runaway vehicles, while no major damage occurred to the vehicle itself, thus indirectly ensuring the safety of the occupants. The research lays a foundation for subsequent road safety protection and maintenance of sustainable development.

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“…Miha Ambrož used a passenger car to carry out a real vehicle test of emergency stop in truck escape ramps. According to the test results, they concluded that: when the roundness of the aggregate particles of the arrester bed is large and the particle size is small, the deceleration after the vehicle enters is greater [17]. Filippo A et al made deformable units through cementitious materials to replace the gravel aggregate of the traditional truck escape ramps.…”

Section: Introductionmentioning

confidence: 99%

Influence of Aggregate Pollution in Truck Escape Ramps on Stopping Distance of Uncontrolled Vehicles

Qin

et al. 2022

Sustainability

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Migration of fine materials such as soil from the roadbed and the ground will gradually pollute the aggregate in the arrester bed of truck escape ramps. However, there are few studies on the impact of aggregate pollution of the arrester bed on the stopping distance of runaway vehicles. This paper uses the discrete element method to study the influence of aggregates with different degrees of pollution on parking distance by taking silty cohesive soil as a typical pollutant. In this paper, the parking process of the uncontrolled vehicle on the arrester bed with different pollution levels was numerically simulated. The simulation results show that the uncontrolled vehicle’s parking distance increases with the contaminated aggregate’s soil content. The simulation results show that when the soil content in the contaminated aggregate is less than 15%, the increase in the parking distance of the uncontrol vehicle is less than 5%; when the soil content is 20–25%, the parking distance of the uncontrolled vehicle increases by more than 20%; and when the soil content is 30–35%, the parking distance of uncontrol vehicle increases by more than 50%. Different maintenance measures should be taken according to the increase in parking distance.

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Decelerations of Passenger Vehicles on Gravel Arrester Beds

Cited by 6 publications

References 10 publications

Feasibility of pervious concrete as engineered material arresting system for airport runway safety areas

Feasibility of pervious concrete as engineered material arresting system for airport runway safety areas

Development of a Runaway Vehicle Protective Barrier System Using Simulation and Full-Scale Crash Testing

Influence of Aggregate Pollution in Truck Escape Ramps on Stopping Distance of Uncontrolled Vehicles

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