Reliability of Soil Sublayers Under Earthquake Excitation

Søren R. K. Nielsen, Kim Jørgensen Mørk

Publikation: Bog/antologi/afhandling/rapportBogForskning

Resumé

A hysteretic model is formulated for a multi-layer subsoil subjected to horizontal earthquake shear waves (SH-waves). For each layer a modified Bouc-Wen model is used, relating the increments of the hysteretic shear stress to increments of the shear strain of the layer. Liquefaction is considered as failure event. Cyclic triaxial tests indicate that strength and stiffness of a layer deteriorate proportionally. Further, that liquefaction takes place when the accumulated mechanical energy dissipated per unit volume exceeds a critical value. This quantity is then introduced as a damage indicator for each layer. The horizontal earthquake acceleration process at bedrock level is modelled as a non-stationary white noise, filtered through a time-invariant linear second order filter.
OriginalsprogEngelsk
Udgivelses stedAalborg
ForlagAalborg Universitetsforlag
StatusUdgivet - 1990
NavnR / Inst. for Bygningsteknik, Aalborg Universitetscenter
NummerR9005
ISSN0902-7513

Bibliografisk note

Structural Reliability Theory ; Paper no. 71

Citer dette

Nielsen, S. R. K., & Mørk, K. J. (1990). Reliability of Soil Sublayers Under Earthquake Excitation. Aalborg: Aalborg Universitetsforlag. R / Inst. for Bygningsteknik, Aalborg Universitetscenter, Nr. R9005
Nielsen, Søren R. K. ; Mørk, Kim Jørgensen. / Reliability of Soil Sublayers Under Earthquake Excitation. Aalborg : Aalborg Universitetsforlag, 1990. (R / Inst. for Bygningsteknik, Aalborg Universitetscenter; Nr. R9005).
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abstract = "A hysteretic model is formulated for a multi-layer subsoil subjected to horizontal earthquake shear waves (SH-waves). For each layer a modified Bouc-Wen model is used, relating the increments of the hysteretic shear stress to increments of the shear strain of the layer. Liquefaction is considered as failure event. Cyclic triaxial tests indicate that strength and stiffness of a layer deteriorate proportionally. Further, that liquefaction takes place when the accumulated mechanical energy dissipated per unit volume exceeds a critical value. This quantity is then introduced as a damage indicator for each layer. The horizontal earthquake acceleration process at bedrock level is modelled as a non-stationary white noise, filtered through a time-invariant linear second order filter.",
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Nielsen, SRK & Mørk, KJ 1990, Reliability of Soil Sublayers Under Earthquake Excitation. R / Inst. for Bygningsteknik, Aalborg Universitetscenter, nr. R9005, Aalborg Universitetsforlag, Aalborg.

Reliability of Soil Sublayers Under Earthquake Excitation. / Nielsen, Søren R. K.; Mørk, Kim Jørgensen.

Aalborg : Aalborg Universitetsforlag, 1990. (R / Inst. for Bygningsteknik, Aalborg Universitetscenter; Nr. R9005).

Publikation: Bog/antologi/afhandling/rapportBogForskning

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N2 - A hysteretic model is formulated for a multi-layer subsoil subjected to horizontal earthquake shear waves (SH-waves). For each layer a modified Bouc-Wen model is used, relating the increments of the hysteretic shear stress to increments of the shear strain of the layer. Liquefaction is considered as failure event. Cyclic triaxial tests indicate that strength and stiffness of a layer deteriorate proportionally. Further, that liquefaction takes place when the accumulated mechanical energy dissipated per unit volume exceeds a critical value. This quantity is then introduced as a damage indicator for each layer. The horizontal earthquake acceleration process at bedrock level is modelled as a non-stationary white noise, filtered through a time-invariant linear second order filter.

AB - A hysteretic model is formulated for a multi-layer subsoil subjected to horizontal earthquake shear waves (SH-waves). For each layer a modified Bouc-Wen model is used, relating the increments of the hysteretic shear stress to increments of the shear strain of the layer. Liquefaction is considered as failure event. Cyclic triaxial tests indicate that strength and stiffness of a layer deteriorate proportionally. Further, that liquefaction takes place when the accumulated mechanical energy dissipated per unit volume exceeds a critical value. This quantity is then introduced as a damage indicator for each layer. The horizontal earthquake acceleration process at bedrock level is modelled as a non-stationary white noise, filtered through a time-invariant linear second order filter.

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KW - Random Vibration

KW - Reinforced Concrete Structures

KW - Damage Indicators

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Nielsen SRK, Mørk KJ. Reliability of Soil Sublayers Under Earthquake Excitation. Aalborg: Aalborg Universitetsforlag, 1990. (R / Inst. for Bygningsteknik, Aalborg Universitetscenter; Nr. R9005).