Seismic Safety of Aged Concrete Gravity Dams Considering Fluid-Structure Interaction

Gogoi, Indrani; Maity, Damodar

doi:10.1080/13632460509350560

Cited by 10 publications

(13 citation statements)

References 18 publications

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“…It has become a major factor in the planning and designing of new dams, proposed to be built in seismic regions and for safety evaluation of existing dams in these regions. To prevent the failure of a dam, it is important to assess its behaviour at any age during its lifetime [8,9], so that remedial measures can be undertaken to strengthen or perhaps decommission the dam at the right time. For the design of an earthquake resistant dam and the evaluation of the safety of an existing dam, it is important to use a rational and reliable dynamic analysis procedure.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on nonlinear dynamic response of concrete gravity dam-reservoir system

Mridha

Maity

2014

Engineering Structures

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Section: Introductionmentioning

confidence: 99%

Experimental investigation on nonlinear dynamic response of concrete gravity dam-reservoir system

Mridha

Maity

2014

Engineering Structures

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“…Following Bangert et al [13] and Kuhl et al [19], dam concrete is treated as an ideal mixture of pore space and skeleton in considering the degradation caused by the chemical and mechanical damage during resconstruction, f  is the normalized compressive strength of concrete against time based on ref. [20] 1 0.0805ln( ) f t    (6) and t is time in years.…”

Section: Modeling Of Chemo-mechanical Damage Of Aging Damsmentioning

confidence: 99%

“…[19,20], the initial porosity is assumed to be  0 = 0.2. The characteristic aging times  a = 100 a and  r = 100 a are selected.…”

Section: Parameters For Aging Concretementioning

confidence: 99%

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Seismic safety of arch dams with aging effects

Wang

Feng

Zhang

2011

Sci. China Technol. Sci.

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Arch dams suffer time-varying external loadings and harsh environment that harm their physical properties. With the aging of such dams, damage accumulates and concrete degradation inevitably appears. In this paper, a model is proposed for simulating concrete degradation with aging because of chemo-mechanical damage. The seismic response of an arch dam with aging effects is analyzed using the proposed model. The results show that the damage caused by the aging of arch dams may result in an increase in tensile cantilever stresses during earthquakes. Meanwhile, the dynamic displacement and joint opening also clearly increase in comparison with those without damage. Thus, the seismic safety of arch dams is reduced by aging effects.arch dams, seismic safety, aging, damage, joint opening Citation:

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“…More recently, the safety evaluation of existing dams has appeared to be a crucial issue in many countries (Chuhan, Guanglun, Shaomin, & Yuexing, 2002;Gogoi & Maity, 2005;Jiang, Du, & Liu, 2009;Léger & Javanmardi, 2006;Mills-Bria, Nuss, & Chopra, 2008;Tekie & Ellingwood, 2003). On the other hand, seismic design of dams still remains an important challenge in many countries worldwide where new dams are being built, such as China and Turkey (Akpinar, Aldemir, & Binici, 2011;Dursun & Gokcol, 2011;Hong, Du, & Jiang, 2011).…”

Section: Introductionmentioning

confidence: 97%

Comparison of the expected damage patterns from two- and three-dimensional nonlinear dynamic analyses of a roller compacted concrete dam

Arıcı

Binici

Aldemir

2013

Structure and Infrastructure Engineering

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The seismic performance of the tallest roller-compacted concrete gravity dam in Turkey is investigated in this study. For this purpose, two-and three-dimensional nonlinear dynamic finite element analyses were conducted to investigate the expected damage under simulated ground motions. Based on the results of finite element simulations, it was found that the threedimensional behaviour of the dam is substantially different from the idealised two-dimensional monolith behaviour, even for a dam having monoliths separated with transverse joints. In addition, it was determined that in order to limit the cracking at the base of the dam, higher strength grout-enriched concrete must be used on the upstream and downstream faces. This study demonstrates the importance of three-dimensional modelling for gravity dams built in relatively narrow valleys along with the significance of the modelling of the nonlinear response for seismic performance assessment.

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Seismic Safety of Aged Concrete Gravity Dams Considering Fluid-Structure Interaction

Cited by 10 publications

References 18 publications

Experimental investigation on nonlinear dynamic response of concrete gravity dam-reservoir system

Experimental investigation on nonlinear dynamic response of concrete gravity dam-reservoir system

Seismic safety of arch dams with aging effects

Comparison of the expected damage patterns from two- and three-dimensional nonlinear dynamic analyses of a roller compacted concrete dam

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