Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evaluation of the Influence of Frequency Characteristics of Input Earthquake on Seismic Coefficient for Gravity Quay Wall via Dynamic Centrifuge Tests
The pseudo-static approach has been conventionally applied for the design of gravity type quay walls. In this method, the seismic coefficient (kh), expressed in terms of acceleration due to gravity, is used to convert the real dynamic behavior to an equivalent pseudo-static inertial force for seismic analysis and design. Therefore, the calculation of an appropriate kh considering frequency characteristics of input earthquake is critical for representing the real dynamic behavior. However, the definitions of kh, which is used for simplified analysis in Korea, focus only on convenience, and the frequency characteristics of input earthquake are not reflected in the kh definitions. This paper evaluates the influences of the frequency characteristics of input earthquake on kh by initially reviewing the kh definitions in the existing codes of Japan for port structures and then by performing two dynamic centrifuge tests on caisson gravity quay walls of different earthquake input motions (Ofunato, Hachinohe). A review of the existing codes and guidelines has shown that the kh values are estimated differently according to the frequency characteristics of input earthquake. On the other hand, based on the centrifuge tests, it was found that the permanent displacements of wall are larger when long-period-dominant earthquake is applied.
Evaluation of the Influence of Frequency Characteristics of Input Earthquake on Seismic Coefficient for Gravity Quay Wall via Dynamic Centrifuge Tests
The pseudo-static approach has been conventionally applied for the design of gravity type quay walls. In this method, the seismic coefficient (kh), expressed in terms of acceleration due to gravity, is used to convert the real dynamic behavior to an equivalent pseudo-static inertial force for seismic analysis and design. Therefore, the calculation of an appropriate kh considering frequency characteristics of input earthquake is critical for representing the real dynamic behavior. However, the definitions of kh, which is used for simplified analysis in Korea, focus only on convenience, and the frequency characteristics of input earthquake are not reflected in the kh definitions. This paper evaluates the influences of the frequency characteristics of input earthquake on kh by initially reviewing the kh definitions in the existing codes of Japan for port structures and then by performing two dynamic centrifuge tests on caisson gravity quay walls of different earthquake input motions (Ofunato, Hachinohe). A review of the existing codes and guidelines has shown that the kh values are estimated differently according to the frequency characteristics of input earthquake. On the other hand, based on the centrifuge tests, it was found that the permanent displacements of wall are larger when long-period-dominant earthquake is applied.
Evaluation of the Influence of Frequency Characteristics of Input Earthquake on Seismic Coefficient for Gravity Quay Wall via Dynamic Centrifuge Tests
Lee, Moon-Gyo (Autor:in) / Ha, Jeong-Gon (Autor:in) / Park, Heon-Joon (Autor:in) / Kim, Dong-Soo (Autor:in)
Geotechnical Earthquake Engineering and Soil Dynamics V ; 2018 ; Austin, Texas
07.06.2018
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
| British Library Conference Proceedings | 2018
Seismic Response of Gravity Quay Walls. I: Centrifuge Modeling
| British Library Online Contents | 1998
Seismic Response of Gravity Quay Walls. I: Centrifuge Modeling
| Online Contents | 1998