Highly-Developed Utilization of the digital National Land Information for Seismic Microzoning

2001 Fiscal Year Final Research Report Summary

• Project/Area Number: 12650567
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Building structures/materials
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: MIDORIKAWA Saburoh Tokyo Institute of Technology, Interdisplinary Graduate School of Science and Engineering, Professor, 大学院・理工学研究科, 教授 (00143652)
• Co-Investigator(Kenkyū-buntansha): FUJIMOTO Kazuo Tokyo Institute of Technology, Interdisplinary Graduate School of Science and Engineering, Research Associate, 大学院・理工学研究科, 助手 (00313362)
• Project Period (FY): 2000 – 2001
• Keywords: DIGITAL NATIONAL LAND INFORMATION / AVERAGE SHEAR-WAVE VELOCITY / GEOMORPHOLOGICAL CONDITION / SOIL DATA

Research Abstract

In order to estimate the distribution of site amplification covering all over Japan more accurately, the applicability of the method for estimating the site amplification from the geomorphological conditions is examined. The soil data on shear-wave velocity are collected from every region of Japan. From this data, average shear-wave velocity in the upper 30mof the ground is calculated. Using the Digital National Land Information, the relationship between the average shear-wave velocity and the elevation for each geomorphological condition is examined. The regional variation is found in the relationships for some geomorphological conditions and is incorporated into the method. Accordingly, the average shear-wave velocity estimated from the method considering the regional variation shows better agreement with the measured shear-wave velocity.