Computer simulation and field measurement of dynamic pavement loading |
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| Affiliation: | 1. Université Grenoble Alpes, Irstea, UR ETNA, 2 rue de la Papeterie, BP76, F-38402 Saint-Martin-d’Hères, France;2. Department of Geography & Environmental Development, Ben Gurion University of the Negev, Beer Sheva, Israel;1. Department of Hydraulic and Environmental Engineering, The Norwegian University of Science and Technology, Trondheim, Norway;2. Department of Hydraulic and Water Resources Engineering, Budapest University of Technology and Economics, Budapest, Hungary;3. Hydraulic Laboratory, DICAM Department, Bologna University, Bologna, Italy;1. Disaster Prevention Research Institute, Kyoto University, Japan;2. Civil Engineering Research Institute for Cold Region, Public Works Research Institute, Japan;3. CTI Engineering Co., Ltd., Japan;1. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, College of Mechanics and Materials, Hohai University, Nanjing 210098, China;2. College of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013, China |
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| Abstract: | Two methods, i.e. computer simulation and field measurement, are used in this paper to investigate dynamic pavement loading (DPL) generated by vehicle–pavement interaction. A profilometer is used for measuring road surface roughness. Based on the power spectral density of the measured surface roughness, a computer simulation program is developed using quarter vehicle model. In field measurement methods, an experiment is designed to gain the time history of DPL. An IVECO vehicle is taken as a test vehicle and eight vibration cells were used to pick up vertical accelerations of vehicle body and axle. The test data are collected and recorded while the test vehicle is moving along 11 different pavement sections of highway and bridge at six different speeds. Statistical characteristics of vertical accelerations and DPL of the test vehicle are obtained and analyzed by means of random process theory. The result of computer simulation matches the result of field measurement very well. It is found that DPL is primarily concentrated between 1.8 and 14.8 Hz and coefficient of variation of DPL falls into the range of 5–35% of static vehicle load. An approximate relationship between coefficient of variation of DPL and vehicle speed and road surface roughness is established. |
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