EFFECTS OF MEMBER STRENGTH DETERIORATION ON SEISMIC RESPONSES OF EXISTING HIGH-RISE BUILDINGS MADE OF STEEL STRUCTURES AND CFT STRUCTURES SUBJECTED TO SEVERE GROUND MOTIONS

• BAI Yongtao

  九州大学大学院 人間環境学府 空間システム専攻

• KAWANO Akihiko

  九州大学大学院 人間環境学研究院 都市・建築部門

• MATSUO Shintaro

  九州大学大学院 人間環境学研究院 都市・建築部門

Bibliographic Information

Other Title

• 巨大地震に対する既存鉄骨造およびCFT造超高層建築物の応答性状に及ぼす部材耐力劣化の影響

Abstract

Extraordinary earthquakes which have been predicted in recent reports may induce the dissatisfactory of seismic demand and collapse of various existing high-rise buildings caused by the strength deterioration of structural components which is not fully considered in the past research. Various weak-beam planar-models of existing high-rise steel and concrete filled steel tube (CFT) frame buildings with different stories (20F, 30F and 40F) are designed, in which, the effects of strength deterioration after the local buckling of steel and CFT components in high-rise buildings are quantitatively considered to investigate the seismic capacity of high-rise steel and CFT buildings subjected to various high-level ground motions. Results show that the amplified effects of member deterioration on the seismic responses and hysteretic energy were captured in both steel and CFT building models. However, high-rise CFT building models demonstrate better capacity than S building models to avoid the local or global collapse, when the ground motions level is extraordinary. Assessment on the collapse resistant capacity of such tall buildings by incremental dynamic analysis clearly demonstrated the significant effect of local strength deterioration on the global seismic resistant capacity of high-rise building.

Journal

• Kou kouzou rombunshuu

  Kou kouzou rombunshuu 20 (78), 78_1-78_14, 2013

  Japanese Society of Steel Construction

Keywords

• High-rise building
• Strength deterioration
• Extraordinary earthquake
• Dynamic response
• Collapse resistant capacity

Details

• CRID: 1390001205314748928
• NII Article ID: 130004548732
• DOI: 10.11273/jssc.20.78_1
• ISSN: 18840329
• ISSN: 18809928
• Text Lang: en
• Data Source:
  • JaLC
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed