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Study on the Vehicle Axial Load Distribution of Highway in Henan Province

Author: ShaoWei
Tutor: ChenZhongDa
School: Chang'an University
Course: Traffic and Transportation Engineering
Keywords: High-grade highways Asphalt Pavement Overload Axle load spectrum Axle load conversion Road performance Control Measures
CLC: U416.217
Type: Master's thesis
Year: 2010
Downloads: 138
Quote: 3
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Abstract


With the rapid development of China's market economy , trade increased , leading to the rapid development of motor transport undertakings . Especially in recent years , the proportion of large goods vehicles transport vehicles increasing , the truck overloading phenomenon has become more and more serious , increasing the heavy overloaded vehicles caused serious damage to the pavement structure , causing the road surface to produce varying degrees early damage. Highway overload problem has become an urgent problem . In this paper, the existence of high-grade highways vehicle overloading, overloading of transport phenomena , first set out to investigate and analyze the axis of the vehicle on the four high-grade highway in Henan Province , four high-grade highways axle load spectrum and vehicle overloading on this basis , the analysis of the four trunk highway vehicle axle load distribution . The axle load conversion specification formulas given formula and related literature on the axle load distribution , use , overloaded , overloading the role of road life of ; overloaded on four high-grade highways , serious overloading the actual situation, Ansys finite element model and rutting prediction model were overloaded , overloading of the asphalt pavement surface deflection , the variation of the tensile stress in the structure of the layers of the end of the pavement rutting calculated analysis and get relevant conclusions. The study shows that under overload , the way of the asphalt pavement surface deflection Shen , the sharp increase of the structural layers of bottom stress and pavement rutting will seriously affect the performance and service life of the asphalt pavement , resulting in premature failure of the pavement . Finally, the combination of axle load spectrum analysis and ANSYS finite element analysis software and rutting model calculations , the article from the fatigue damage and ultimate destruction of two specific analysis of the overloaded , overloading hazards of asphalt pavement , and for these possible hazards proposed the corresponding countermeasures to combat the problem of overloading at the technical level .

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CLC: > Transportation > Road transport > Road works > Roadbed, pavement engineering > Pavement Engineering > Road : use of the material points > Asphalt Pavement
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