8048

7483

كارشناسي ارشد

راه و ترابري

اصفهان: دانشگاه صنعتي اصفهان، دانشكده عمران

1391

چهارده،84ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

مهدي ابطحي ،بهروز كوشا

مجيد صباغ زاده

30/7/92

غلامعلي رييسي، محمدرضا جعفري

مهندسي عمران

ID7483

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

Assessment of Heavy Vehicle Operations on Transportation Facilities of Iran Farhang Jalali Coldplay 364@yahoo com Date of Submission March 16 2013 Department collage of Civil Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor Dr Seyed Mehdi Abtahi mabtahi@cc iut ac ir Dr Behrooz Koosha cgkoosha @cc iut ac ir Abstract The suitable functioning of transportation facilities is based on having good infrastructure trusted fleet and regulations In many countries due to lack of research and also resource limitations intensive field work has not been performed and from the beginning edition of pavement design codes carried out with the help of codes prepared in developed countries It seems it is in such a condition that proper coordination among fleet pavement condition and weight rules does not exist This results in economic loss decreased safety and traffic chaos We should consider that generally all the society could sense the benefits of freight shipping but governments are usually paying to provide and upkeep the infrastructure It seems pavement damages constitute a major contribution in transportation cost therefore damage Assessment does help to find the effective strategies to reduce related costs different classes of heavy vehicles define and evaluate efficiency among different vehicles and Also proposing obtimum proportions of heavy vehicles based on load spectra Two approaches are considered here to evaluate load related damages on pavements First using permitted axle weights and second assessing related damages based on load spectra Also a comparison in damages resulting from enforcing past and new regulations has been done The results indicate that there would be an optimum proportion of heavy vehicles in traffic stream that minimize the load related pavement damages Also in shipping a constant tonnage of goods smaller numbers of fleet would be sufficient In addition designing pavements based on permitted axle weights are safe and conservative Keywords load spectra permitted truck weight weight in motion optimum truck fleet PDF created with pdfFactory trial version www pdffactory com

مهدي ابطحي ،بهروز كوشا

مجيد صباغ زاده

غلامعلي رييسي، محمدرضا جعفري