Ambient Vibration Tests at Some Buttress Dams in Romania
(چکیده مقاله) :
Abstract :
t
The paper presents a selection of results from ambient vibration tests performed during the period 2015 – 2016 at three buttress
dams in Romania. The following buttress dams were investigated: (i) Stramtori - Firiza dam on Firiza River (52 m height, 198m
crest length), (ii) Gura Raului dam on Cibin River (74 m height, 328m crest length), (iii) Poiana Uzului dam on Uz River (84 m
height, 507m crest length). Vibration data were acquired in two dam operation conditions: with and without running of hydromechanical equipment. The vibration measurement equipment and setups, the processing of the recorded data and the obtained
results (through spectral analysis) are presented. The main modal frequencies of the investigated buttress dams were estimated.
The modal properties are considered for the monitoring of dams’ dynamic behavior for small amplitude vibrations (elastic behavior)
and for the calibration of the numerical associated models. The measurements campaigns are part of the long-term monitoring of
dams. If such investigation program is repeated every 3÷5 years, the dams ambient vibration response can be used for the
assessment of the structural and/or material degradation, due to ageing or to other alteration processes. As Romania is an earthquake
prone country, such results can also be used as a witness of the dam’s status before a major seismic event
The paper presents a selection of results from ambient vibration tests performed during the period 2015 – 2016 at three buttress
dams in Romania. The following buttress dams were investigated: (i) Stramtori - Firiza dam on Firiza River (52 m height, 198m
crest length), (ii) Gura Raului dam on Cibin River (74 m height, 328m crest length), (iii) Poiana Uzului dam on Uz River (84 m
height, 507m crest length). Vibration data were acquired in two dam operation conditions: with and without running of hydromechanical equipment. The vibration measurement equipment and setups, the processing of the recorded data and the obtained
results (through spectral analysis) are presented. The main modal frequencies of the investigated buttress dams were estimated.
The modal properties are considered for the monitoring of dams’ dynamic behavior for small amplitude vibrations (elastic behavior)
and for the calibration of the numerical associated models. The measurements campaigns are part of the long-term monitoring of
dams. If such investigation program is repeated every 3÷5 years, the dams ambient vibration response can be used for the
assessment of the structural and/or material degradation, due to ageing or to other alteration processes. As Romania is an earthquake
prone country, such results can also be used as a witness of the dam’s status before a major seismic event
(توضیحات تکمیلی) :
(توضیحات تکمیلی) :
Description :
مقاله ISI انگلیسی اصلی
سال انتشار:2017
فایل ISI انگلیسی اصلی ، با فرمت Pdf
تعداد صفحات فایل ISI انگلیسی اصلی: 5 صفحه
سال انتشار:2017
فایل ISI انگلیسی اصلی ، با فرمت Pdf
تعداد صفحات فایل ISI انگلیسی اصلی: 5 صفحه
Authors / Descriptions(نویسندگان/توضیحات): مقاله ISI سال انتشار2017 \ A. Abdulamita S. Demetriua A. Aldeaa C. Neagua * D. Gaftoia
Sent date(تاریخ ارسال) :
1397/10/18 | 1/8/2019
Number of visits(تعداد بازدید):
727
Key words (کلمات کلیدی):
Buttress dams, ambient vibration measurements
Number of pages(تعداد صفحات) :
5
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