Institute of Transportation, MOTC

Title	Refinement for Seismic Liquefaction Risk Assessment Model for Port Area (2/5)-Refinement of Taipei Port Model
Dept	Transportation Technology Research Center
Year	2024
Month	3
Price	200
Summary	The second article of the Disaster Prevention and Rescue Act stipulates that soil liquefaction falls within the scope of natural disasters. This project builds upon the earlier achievements of the Transportation Technology Research Center in establishing the "Documentation of Geotechnical Data in Harbor Areas and Development of an Automated Liquefaction Analysis Module" and conducting research on "Seismic Monitoring in Harbor Areas and Assessment of Soil Liquefaction Potential.." Specifically focusing on ports under the jurisdiction of the Port Authority, the project aims to comprehensively assess liquefaction potential in accordance with current seismic design specifications. This involves updating the geotechnical database.     In the fiscal year 2022, the liquefaction analysis pertaining to Taichung Port has been completed. In the fiscal year 2023, the primary focus will be on evaluating Taipei Port. Within the existing liquefaction assessment methodology, domestically established evaluation methods from the Building Technology Code and internationally recognized deterministic and probabilistic liquefaction potential assessment methods will be incorporated. These include the NCEER method using SPT-N as an indicator, the HBF method from the Central Weather Bureau Seismology Center, and the Cetin probability method.The updated geotechnical database will undergo analyses of liquefied soil layer depths and extents under various ground acceleration values. Additionally, employing the procedure recommended by Ishihara and Yoshimine (1992), the post-liquefaction settlement in free fields will be estimated. The updated on-site seismic monitoring stations within the port area will be integrated to provide rapid post-earthquake liquefaction damage assessment. This will offer information on liquefaction extents, depths, and port settlement values promptly, enabling timely notifications to relevant management personnel for necessary inspections and reviews.  Research Outcome Benefits and Applications: 1. Completion of the addition of geotechnical database usable drilling data to 148 boreholes at Taipei Port. 2. Completion of liquefaction potential assessment for Taipei Port's harbor area using methods compliant with domestic seismic design specifications. 3. Completion of estimating liquefaction risks in Taipei Port's harbor area for various levels of seismic activity. Government Agencies' Utilization Scenarios: 1. Providing seismic safety assessment information for Taipei Port's harbor area as a reference for engineering maintenance     personnel of Taiwan Ports Corporation and Keelung Harbor Bureau for post-earthquake inspections, testing, and disaster     prevention decision-making. 2. The results are provided to the Institute’s subsequent research and application in planning, design and construction of harbor      projects by the Taiwan International Port Corporation and its subsidiaries. 3. The research outcomes provide references for applications across industries, government, academia, and research sectors.
Post date	2024/03/28