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International Journal of Civil Engineering، جلد ۱۱، شماره ۲، صفحات ۱۳۴-۱۴۱
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Geomatics applied to dam safety DGPS real time monitoring |
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| چکیده انگلیسی مقاله |
New advances in geomatics and communications technologies are enabling the development of Automated Auscultation System for structure monitoring. In particular, Differential GPS (DGPS) technique allows real-time monitoring of structures with millimetre accuracy after an appropriate mathematical treatment. The results of real-time DGPS monitoring of a pilot dam over 15 months are presented and compared with the results of pendulums and angular collimation. DGPS monitoring was established to control two points at the top of the dam with reference to an external and stable station. Communications were critical, evolving from initial GPRS connections to more reliable ASDL line in the last months. Real-time DGPS positions were filtered to reach millimetric accuracy through Kalman filter. Two configurations of the filter were tested, one more adapted to predictable and uniform velocity deformations (low frequency) and another more suitable for sudden and large movements (high frequency). Root mean square errors were calculated taking pendulums as a reference. Results show that both DGPS and angular collimation allow monitoring with millimetric accuracy. In the last period, where communications with processing server were stable, a global accuracy of 1.44 and 1.86 mm was reached for real-time DGPS monitoring. RINEX post-processing yielded millimetric results, validating real-time observations. We can affirm that the DGPS system is very useful for dam auscultation and safety as it detects adequately absolute deformations, being a complement to existing methods which should be considered in new safety plans. |
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| کلیدواژه‌های انگلیسی مقاله |
Dam monitoring, Geomatics, DGPS, Structures, Real time. |
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| نویسندگان مقاله |
d galan | d. galan
topography and geomatics laboratory e.t.s.i. caminos canales y puertos technical university of madrid upm ciudad universitaria madrid 28040 spain
m marchamalo | m. marchamalo
topography and geomatics laboratory e.t.s.i. caminos canales y puertos technical university of madrid upm ciudad universitaria madrid 28040 spain
r رودریگویز مارین | r martinez marin
topography and geomatics laboratory e.t.s.i. caminos canales y puertos technical university of madrid upm ciudad universitaria madrid 28040 spain
جبار sanchez sobrino | j a sanchez sobrino
topography and geomatics laboratory e.t.s.i. caminos canales y puertos technical university of madrid upm ciudad universitaria madrid 28040 spain
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| نشانی اینترنتی |
http://ijce.iust.ac.ir/browse.php?a_code=A-10-1151-1&slc_lang=en&sid=en |
| فایل مقاله |
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| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
Water-Hydraulic Structure |
| نوع مقاله منتشر شده |
Technical Note |
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