Improved performance-based seismic coefficient for gravity-type quay walls based on centrifuge test results
- PDF / 2,836,862 Bytes
- 18 Pages / 595.276 x 790.866 pts Page_size
- 54 Downloads / 161 Views
(0123456789().,-volV)(0123456789(). ,- volV)
RESEARCH PAPER
Improved performance-based seismic coefficient for gravity-type quay walls based on centrifuge test results Moon-Gyo Lee1 • Jeong-Gon Ha2 • Hyung-Ik Cho1 • Chang-Guk Sun1 • Dong-Soo Kim3 Received: 9 April 2020 / Accepted: 22 September 2020 Ó Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Verifying the seismic performance of port structures when the force balance limit is exceeded is important for the performance-based seismic design of gravity-type quay walls. Over the last three decades, performance verification methods have been developed that consider the effects of the design earthquake motion, geotechnical conditions, and structural details on the deformation of a quay wall to accurately predict earthquake-induced damage. In this study, representative performance verification methods (i.e., simplified dynamic analysis methods extending from the Newmark sliding block method and performance-based seismic coefficients developed in Japan) were quantitatively assessed with actual cases of earthquake-damaged quay walls and the results of dynamic centrifuge tests previously conducted under various conditions (i.e., different wall heights, earthquake motions and the thickness of subsoil). The dynamic centrifuge test results suggested directions for improving the performance-based seismic coefficients of the representative methods, while their field applicability and reliability were confirmed according to the actual earthquake records. Keywords Dynamic centrifuge test Gravity-type quay wall Newmark sliding block theory Seismic code Seismic coefficient Time–frequency analysis
1 Introduction Quay walls are a typical mooring facility. Conventionally, their seismic performance is evaluated through simplified analysis based on the pseudo-static method, simplified dynamic analysis based on the sliding block method, or dynamic analysis using finite element or finite difference numerical techniques [2, 9, 12, 14, 22, 23, 37, 38, 40]. Since the Great Hanshin Earthquake-damaged Kobe Port in 1995, significant advances have been made in dynamic analysis, which can comprehensively consider soil–structure interaction and soil nonlinear behavior in response to & Dong-Soo Kim [email protected] 1
Earthquake Research Center, Korea Institute of Geoscience and Mineral Resources, Daejeon, Korea
2
Structural Safety and Prognosis Research Division, Korea Atomic Energy Research Institute, Daejeon, Korea
3
Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea
an earthquake, and performance-based design has been introduced for port structures. However, challenges remain for dynamic analysis in that the results differ depending on the designer’s understanding of the numerical analysis and the selection of input parameters such as those for the constitutive models, mesh discretization, and material properties. Therefore, simplified analysis and simplified dynamic analysis, which offe
Data Loading...
