Collapsing behavior of steel structural buildings beyond stable limit subjected to predictable super mega earthquake

2014 Fiscal Year Final Research Report

• Project/Area Number: 23360247
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Building structures/Materials
• Research Institution: Osaka University
• Principal Investigator: TADA Motohide 大阪大学, 工学(系)研究科(研究院), 教授 (90216979)
• Co-Investigator(Kenkyū-buntansha): KUWAHARA Susumu 大阪大学, 大学院工学研究科, 准教授 (10243172) ; MUKAIDE Seiji 大阪大学, 大学院工学研究科, 助教 (20423204)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: 倒壊 / 超大地震 / 鋼構造建物

Outline of Final Research Achievements

Complete collapse of buildings is worried about in cases of Nankai, Tohnankai, Tohkai and Uemachi-fault mega earthquakes, provided the buildings are structurally checked only for Building Standard Law. This study clarified that degradation behavior of steel tube columns in large deformation range affects the structural performance of complete collapse, and clarified the degradation behavior of steel columns with various types of column bases by loading tests. Numerical analysis programs that can analyze complete collapse were also developed. Conditions of complete collapse of steel building structures were derived by parametric analyses using the developed programs.

Free Research Field

建築構造