LINEAR SEISMIC RESPONSE OF ARCH DAMS TO NON-UNIFORM EXCITATIONS CONSIDERING LOAD COMBINATION EFFECTS

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AKBARI M.; KEYHANI A.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Seminar Paper

Paper Information

Seminar: NATIONAL CONFERENCE ON STRUCTURAL ENGINEERING IRAN
Year:2015 | Issue:1

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Title

LINEAR SEISMIC RESPONSE OF ARCH DAMS TO NON-UNIFORM EXCITATIONS CONSIDERING LOAD COMBINATION EFFECTS

Author(s)

AKBARI M. | KEYHANI A.

Keywords

ARCH DAM

LINEAR ANALYSIS

NON-UNIFORM EXCITATION

SVEGM

Abstract

IN THE PRESENT PAPER, THE EFFECT OF NON-UNIFORM EXCITATION DUE TO SPATIALLY VARYING EARTHQUAKE GROUND MOTIONS (SVEGM) ON LINEAR RESPONSES OF CONCRETE ARCH DAMS IS INVESTIGATED. AN ITERATIVE SCHEME IS UTILIZED TO GENERATE SEISMIC GROUND MOTION TIME-HISTORIES AT SEVERAL LOCATIONS ALONG FOUNDATION BOUNDARIES THAT ARE COMPATIBLE WITH PRESCRIBED TARGET RESPONSE SPECTRA AND ARE CORRELATED ACCORDING TO A GIVEN COHERENCE FUNCTION INCLUDING THE WAVE PROPAGATION EFFECT. A DOUBLE CURVATURE ARCH DAM IS SELECTED AS CASE STUDY IN WHICH THE RESERVOIR IS MODELED AS A COMPRESSIBLE MEDIUM AND THE FOUNDATION IS ASSUMED TO BE MASSLESS. VARIOUS LOAD COMBINATIONS ARE CONSIDERED BASED ON THE CORRESPONDING RESERVOIR WATER LEVELS AND THERMAL LOADS. IT IS OBSERVED THAT USING SVEGM LEADS TO HIGHER VALUES IN BOTH TENSILE STRESSES AND PERCENTAGE OF OVERSTRESSED PARTS WITHIN THE DAM BODY IN COMPARISON WITH UNIFORM EXCITATION AND THEREFORE TO BE MORE REALISTIC IN CALCULATING THE DAM RESPONSE, THIS PHENOMENON SHOULD BE INCORPORATED IN SEISMIC ANALYSES ESPECIALLY IN HIGH SEISMICITY REGIONS.

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APA: Copy

AKBARI, M., & KEYHANI, A.. (2015). LINEAR SEISMIC RESPONSE OF ARCH DAMS TO NON-UNIFORM EXCITATIONS CONSIDERING LOAD COMBINATION EFFECTS. NATIONAL CONFERENCE ON STRUCTURAL ENGINEERING IRAN. SID. https://sid.ir/paper/908447/en

Vancouver: Copy

AKBARI M., KEYHANI A.. LINEAR SEISMIC RESPONSE OF ARCH DAMS TO NON-UNIFORM EXCITATIONS CONSIDERING LOAD COMBINATION EFFECTS. 2015. Available from: https://sid.ir/paper/908447/en

IEEE: Copy

M. AKBARI, and A. KEYHANI, “LINEAR SEISMIC RESPONSE OF ARCH DAMS TO NON-UNIFORM EXCITATIONS CONSIDERING LOAD COMBINATION EFFECTS,” presented at the NATIONAL CONFERENCE ON STRUCTURAL ENGINEERING IRAN. 2015, [Online]. Available: https://sid.ir/paper/908447/en

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