WIM Based Calibration of AASHTO LRFD Live Load Model (HL-93) for Highway Bridges Design of Pakistan

Authors

  • Kamran Ahmed Dept. of Civil Engineering, University of Engineering & Technology Peshawar, Pakistan
  • Syed Muhammad Ali Dept. of Civil Engineering, University of Engineering & Technology Peshawar, Pakistan
  • Muhammad Usman Shafi Dept. of Civil Engineering, University of Engineering & Technology Peshawar, Pakistan

Keywords:

Live Load Model, AASHTO LRFD, WIM, Calibration, Acceleration, Probability, Traffic

Abstract

Among the impermanent loads on bridge structures, the most frequent one is a vehicular live load and plays a
key role in design of the bridge components Most of the developed countries have a comprehensive highway bridge
design specification while other countries adopt certain renowned design codes but with certain adjustments to meet
their demands. Live Load Models are either modified or calibration factors are proposed for them. In Pakistan two
different codes are being followed for highway bridge design i.e. West Pakistan Code of Practice for Highway Bridge
(1967) and AASHTO LRFD. Both the codes live load models do not represent the actual load and traffic pattern in
Pakistan. In this study a WIM data is analyzed, extrapolated to the design period and HL93 live load model is calibrated
to represent the true traffic condition of Pakistan.

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Published

2017-09-25

How to Cite

Kamran Ahmed, Syed Muhammad Ali, & Muhammad Usman Shafi. (2017). WIM Based Calibration of AASHTO LRFD Live Load Model (HL-93) for Highway Bridges Design of Pakistan. International Journal of Advance Engineering and Research Development (IJAERD), 4(9), 178–185. Retrieved from https://ijaerd.org/index.php/IJAERD/article/view/3623

Issue

Vol. 4 No. 9 (2017): Volume 4 Issue 9 SEPTEMBER 2017

Section

Articles