Modelling the Effects of Sediment on the Seismic Behaviour of Kinta Roller Compacted Concrete Dam

Abdul Malik Thanoon, Huda and Jaafar, Mohd Saleh and Noorzaei, Jamaloddin and Thanoon, Waleed Abdulmalik and Mohammed, Thamer Ahmed (2010) Modelling the Effects of Sediment on the Seismic Behaviour of Kinta Roller Compacted Concrete Dam. Pertanika Journal of Science & Technology, 18 (1). pp. 43-59. ISSN 0128-7680

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Abstract

An attempt was made in this investigation to trace the dynamic response of roller compacted concrete dam, which is subjected to horizontal ground motion by considering the interactions between flexible foundations, reservoir water, and bottom reservoir sediments. Two-dimensional finite-infinite element was used for the non-linear elasto-plastic dynamic analysis. In this analysis, special emphasis was given to the non-linear behaviour of discontinuities along RCC dam-bedding rock foundation which was modelled by thin layer interface. Analysis was first carried out under static loading (self-weight and hydrostatic pressure), and this this was followed by seismic analysis, with hydrodynamic pressure effect in a dam-reservoir system. Based on the numerical dynamic results, it is concluded that the bottom reservoir sediment has significant effect on the seismic response of the RCC gravity dam. Moreover, there is a redistribution of the stresses at thin layer interface with significant stresses reduction, which is resulted from the release of energy through different modes of deformation in this region. Keywords: Seismic analysis, roller

Item Type:Article
Keyword:Seismic analysis, roller compacted concrete dam, coupled finite-infinite elements, sediment, thin layer interface
Faculty or Institute:Faculty of Engineering
Publisher:Universiti Putra Malaysia Press
ID Code:9558
Deposited By: Anas Yahaya
Deposited On:21 Feb 2011 10:30
Last Modified:27 May 2013 07:42

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