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Analysis of Falling Weight Deflectometer Tests at Denver International Airport.
| 题名： | Analysis of Falling Weight Deflectometer Tests at Denver International Airport. |
| 作者： | dong, m. hayhoe, g. f. |
| 关键词： | deflection, slabs, strains, joints, load analysis, design, specifications |
| 摘要： | Data collected from heavy weight deflectometers (HWD) tests at the Federal Aviation Administration (FAA) instrumented Portland cement concrete (PCC) pavement test site at Denver International Airport (DIA) are used to analyze the deflection response of the pavement. The HWD tests are conducted routinely for slabs in both the traffic and the nontraffic area. The deflection measurements show that a linear relationship exists between surface deflection and load at the center of the slabs and at the mid-points of the joints. Some of the tests were also run with the HWD weight dropped directly over multidepth deflectometers (MDDs) in the pavement. Deflections at the interior, joints, and corners of a slab measured by the HWD are compared to those measured by the MDDs at different depths. The analysis shows that the movement of an anchor at 3 meter (10 feet) below the slab surface had significant effects on the measured pavement surface deflection while the effects of movement of an anchor at 6-meter (20-feet) depth may be negligible. The analysis also indicates that a gap existed between the bottom of the PCC slab and the top of the econocrete base layer at the slab corners and at the joints. / Supplementary Notes: Prepared in cooperation with Federal Aviation Administration Technical Center, Atlantic City, NJ. Airport Technology Research and Development Branch. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| 总页数： | u0820；15p |
| 报告类型： | 科技报告 |
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