Water length and height effects on the earthquake behavior of arch dam-reservoir-foundation systems

In this study, water length and height effects on the earthquake behavior of arch dam-reservoir-foundation systems are purposed. The study can be classified into two parts. In the first part, in order to obtain a realistic 3D arch dam-reservoir-foundation model, water length effects on the behavior of the arch dam systems are investigated. For this purpose a double curvature arch dam is modeled by forming four different water lengths related to dam Height (H) as H, 2H, 3H and 4H. Each model is analyzed in time domain and the realistic model is obtained according to the analyses results. In the second part, water height effects on the behavior of the arch dam system are investigated. The arch dam obtained from first part of the study is modeled by forming four different water heights related to dam Height (H) as 0H, 0.33H, 0.66H and H. The behavior of the dam, reservoir and foundation are expressed in terms of displacements using Lagrangian approach. The foundation is taken into account as massless; behavior of reservoir is assumed to be linearly elastic, inviscid and irrotational. In this study, all systems are modeled by ANSYS finite element program and analyses are performed using IMPVALL/I-ELC180 component of Imperial Valley (1940) earthquake. Dynamic equations of motions are solved by using Newmark integration algorithm. It is seen that both water length and height affect the earthquake behavior of the arch dams considerably.

[1]  H. Saunders,et al.  Book Reviews : DYNAMICS OF STRUCTURES R.W. Clough & J. Penzien McGraw-Hill Book Co., New York, New York (1975) , 1976 .

[2]  P. Paultre,et al.  An experimental investigation of water level effects on the dynamic behaviour of a large arch dam , 2001 .

[3]  Hasan U. Akay,et al.  Applicability of general-purpose finite element programs in solid-fluid interaction problems , 1979 .

[4]  H. Saunders,et al.  Finite element procedures in engineering analysis , 1982 .

[5]  Rui Faria,et al.  Numerical simulation of collapse scenarios in reduced scale tests of arch dams , 2006 .

[6]  A Shahkarami,et al.  Study of the compression and tension factors of safety with a 3d fem model for an arch dam and rock foundation: a case study of the karuniii arch dam in iran , 2004 .

[7]  R. Dungar.  An efficient method of fluid–structure coupling in the dynamic analysis of structures , 1978 .

[8]  J. Nasserzare,et al.  Computation of natural frequencies and mode shapes of arch dams as an inverse problems , 2000 .

[9]  P. S. Bulson,et al.  Engineering structures : developments in the twentieth century : a collection of essays to mark the eightieth birthday of Sir Alfred Pugsley , 1983 .

[10]  H. Westergaard.  Water Pressures on Dams During Earthquakes , 1933 .

[11]  Anil K. Chopra,et al.  Earthquake analysis of arch dams including dam–water interaction, reservoir boundary absorption and foundation flexibility , 1986 .

[12]  Steven R Biegalski,et al.  Neutron depth profiling of cathode materials from lithium ion cells, invited , 2008 .

[13]  A. Chopra.  Earthquake Behavior of Reservoir-Dam Systems , 1968 .

[14]  Vahid Lotfi,et al.  Seismic analysis of concrete arch dams by combined discrete crack and non-orthogonal smeared crack technique , 2004 .

[15]  R. Clough,et al.  Dynamics Of Structures , 1975 .

[16]  J. Z. Zhu,et al.  The finite element method , 1977 .

[17]  Nonuniform earthquake input for arch dam–foundation interaction , 1999 .

[18]  A. A. Dumanoglu,et al.  Reservoir water level effects on nonlinear dynamic response of arch dams , 2008 .

[19]  Vahid Lotfi,et al.  Comparison of non-orthogonal smeared crack and plasticity models for dynamic analysis of concrete arch dams , 2003 .

[20]  Edward L. Wilson,et al.  Finite elements for the dynamic analysis of fluid‐solid systems , 1983 .

[21]  I. Moore,et al.  New techniques for modelling reservoir-dam and foundation-dam interaction , 1997 .

[22]  John F. Hall,et al.  System identification of a concrete arch dam and calibration of its finite element model , 2006 .