Abstract
In order to execute dam safety planning, it is necessary to develop a method to monitor dam health, which considers and simulates the actual physical failure processes of an embankment dam. The objective of this study is to monitor the behaviour of the earthen dam during the impact of ground force through experimental modal analysis. The model of an earthen dam was constructed on a steel plate, which could be easily moved by input force. Accelerometers were installed on the model in many positions to measure respondent acceleration. The post-processing data were processed to show signs such as natural frequency and mode shape using the least-square complex exponential method. Natural frequency shifts were tracked throughout the testing period and the effects of the varying water levels were identified. During vibration, the effect of liquefaction observed in tests was found to be the first factor to deteriorate on the upstream side of the embankment model. The measurement position of the accelerometer was found to be very important for the health monitoring of the embankment dam. The proposed dam health index is the comparison of acceleration at the crest and the upstream side in both time and frequency domains which can identify damage to the embankment dam.
Similar content being viewed by others
References
Aktan AE, Chuntavan C, Lee KL, Toksoy T (1993) Structural identification of steel stringer bridge. Transportation Research Board, Washington, D.C.
Allen DE, Rainer JH (1995) Guidelines for the seismic evaluation of existing buildings. Can J Civ Eng 22(3):500–505
Arango I (1996) Magnitude scaling factors for soil liquefaction evaluations. J Geotech Eng 122(11):929–936
Braja M, Das (1997) Advanced soil mechanics. In: 2nd edn. Taylor & Francis Publishers
Casas JR, Aparicio AC (1994) Structural damage identification from dynamic-test data. J Struct Eng 120(8):2437–2450
Chinnarasri C, Jirakidlert S, Wongwises S (2004) Embankment dam breach and its outflow characteristics. Civ Eng Environ Syst 21(4):247–264
Darbre GR, Proulx J (2002) Continuous ambient-vibration monitoring of the arch dam of Mauvoisin. Earthquake Eng Struct Dynam 31(2):475–480
Ebrahimian B (2011) Numerical analysis of nonlinear dynamic behavior of earth dams. Front Archit Civ Eng China 5(1):24–40
Ewins DJ (2000) Modal testing: theory, practice and application. In: 2nd edn. Research Studies Press Ltd
Flesch RG, Kernbichler K (1988) Bridge inspection by dynamic tests. In: Natke, Yao (eds) Proceedings of the structural safety evaluation based on system identification approaches, held in Lambrecht/Pfalz, Germany, June 29th–July 1st 1987
Gazetas G (1987) Seismic response of earth dams: some recent developments. Soil Dyn Earthquake Eng 6(1):2–47
Golub GH, Van Loan CF (1996) Matrix computation. In: 3rd edn. The Johns Hopkins University Press
He J, Fu Z (2001) Modal analysis. Butterworth-Heinemann, Oxford
Hogue TD, Aktan AE, Hoyos A (1991) Regional identification of constructed facilities. J Struct Eng 117(1):128–148
Iwasaki T (2006) Response analysis of civil engineering structure subjected to earthquake motions. J Disaster Res 1(2):274–295
Kuwabara T, Nakaya M, Koyama S, Sidiq ZM (1987) Study on the vibration characteristics of fill-dam with a rigid core: II Experimental study. Bull Univ Osaka Pref Ser B 39:101–109
Lemos JV, Oliveira S, Mendes P (2008) Analysis of the dynamic behaviour of Cabril Dam considering the influence of contraction joints. In: The 7th European Conference on Structural Dynamics. 7–9 July, Southampton: Paper number E255
Marcuson WF III (1978) Definition of terms related to liquefaction. J Geotech Eng Div ASCE 104(9):1197–1200
Okamoto S, Hakuno M, Kato K, Kawakami F (1969) On the dynamical behavior of an earth dam during earthquake. In: Proceedings of the 4th world conference on earthquake engineering, Santiago
Patjawit A (2005) Structural identification of concrete girder bridge for strength evaluation. D.Eng. Dissertation, Asian Institute of Technology, Thailand
Patjawit A, Chinnarasri C, Kanok-Nukulchai W (2008) Dam health monitoring based on dynamic properties, Geotechnical Special Publication No. 178, GeoCongress 2008, March 9–12, New Orleans, Louisiana, pp. 223–230
Patjawit A, Kanok-Nukulchai W (2005) Health monitoring of highway bridges based on a global flexibility index. Eng Struct 27(9):1385–1391
Raghavendrachar M, Aktan AE (1995) Flexibility by multi-reference impact testing for bridge diagnostics. J Struct Eng 118(8):2186–2203
Sakamoto T, Yoshida H, Yamaguchi Y, Satoh H, Iwashita T, Matsumoto N (2002) Numerical simulation of sliding of an earth dam during the 1995 Kobe Earthquake. In: Proceedings of the 3rd US–Japan workshop on advanced research on earthquake engineering for dams. 22–23 June, San Diego, California
Salane HJ, Baldwin JW (1990) Identification of modal properties of bridges. J Struct Eng 16(7):2008–2021
Salawu OS, Williams C (1995) Bridge assessment using forced-vibration testing. J Struct Eng 121(2):161–173
Samman MM, Biswas M (1994) Vibration testing for nondestructive evaluation of bridges. J Struct Eng 120(1):290–306
Towhata, Ikou (2008) Geotechnical earthquake engineering. Springer-Verlag Berlin Heidelberg
Yang JN, Lei Y, Lin S, Huang N (2004) Identification of natural frequencies and damping of in situ tall building using ambient wind vibration data. J Eng Mech ASCE 130(5):570–577
Acknowledgments
The authors would like to thank the National Research University Project of Thailand’s Office of Higher Education Commission. Partial financial support from the Thailand Research Fund for providing research Grant Number BRG5280001 is highly appreciated.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Patjawit, A., Chinnarasri, C. Simplified evaluation of embankment dam health due to ground vibration using dam health index (DHI) approach. J Civil Struct Health Monit 4, 17–25 (2014). https://doi.org/10.1007/s13349-013-0049-0
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s13349-013-0049-0