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Modelling the effects of sediment on the seismic behaviour of Kinta roller compacted concrete dam


Citation

Abdul Malik Thanoon, Huda and Jaafar, Mohd Saleh and Noorzaei, Jamaloddin and Abdul Malik Thanoon, Waleed 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; ESSN: 2231-8526

Abstract / Synopsis

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.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Publisher: Universiti Putra Malaysia Press
Keywords: Seismic analysis; Roller compacted concrete dam; Coupled finite-infinite elements; Sediment; Thin layer interface
Depositing User: Noor Syafini Zamani
Date Deposited: 20 Nov 2015 16:01
Last Modified: 20 Nov 2015 16:01
URI: http://psasir.upm.edu.my/id/eprint/40569
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