Concussional movement of the Rokko fault block in Kansai and its dynamic response analysis for seismic isolation block system

• USHIYAMA Naomi

  埼玉大学大学院博士前期課程

• TANIYAMA Hisashi

  埼玉大学大学院理工学研究科

• TSUNODA Fumio

Bibliographic Information

Other Title

• 六甲地塊の強震動とその地震応答解析
• ロッコウチカイ ノ キョウシンドウ ト ソノ ジシン オウトウ カイセキ

Abstract

Ground motion over a loosely coupled swaying faultblock is shown through three-dimensional non-lineardynamic simulations to be strengthened near the peripheral bounding faults. The model is considered the Rokko fault block in West Japan, which has been identified as such a swaying fault block. One of the peripheral faults bounding this block was activated during the 1995 South Hyogo Prefecture Earthquake (M7.3) in Kobe, and high seismicity along the fault appears to have impeded complete cohesion among the blocks in the area. The Rokko fault block rose as a horst structure in the late Pliocene to middle Pleistocene, and is bounded by a steep inward-dipping fracture. Crushed zones associated with other peripheral active faults of the Rokko massif have similar depth and high seismicity, confirming the Rokko block to be a swaying fault block. The strong peripheral ground motion simulated by assuming a vibrating cube adhered loosely to the host rock is in accordance with the prediction of seimic risk for the plain, where fault blocks are similarly embedded with loose adhesion.

Journal

• Earth Science (Chikyu Kagaku)

  Earth Science (Chikyu Kagaku) 63 (6), 343-354, 2009

  The Association for the Geological Collaboration in Japan

Keywords

• 1995 South Hyogo Prefecture Earthquake
• Strong Motion
• Mobilized Fault Massif
• Rokko Fault Block
• Three dimensional Finite Element Method
• Ground Motion Disaster

Details

• CRID: 1390001204234280832
• NII Article ID: 110007503763
• NII Book ID: AN00141269
• DOI: 10.15080/agcjchikyukagaku.63.6_343
• ISSN: 21897212
• ISSN: 03666611
• NDL BIB ID: 10515362
• Web Site: http://id.ndl.go.jp/bib/10515362
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10515362
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed