Seismic resistance capacity of high-rise buildings subjected to long-period ground motions: E-defense shaking table test

Yu Lin Chung, Takuya Nagae, Toko Hitaka, Masayoshi Nakashima

研究成果: Article同行評審

94 引文 斯高帕斯(Scopus)

摘要

A series of large-scale shaking table tests is conducted for a high-rise building structure subjected to long-period ground motions. A test method is developed to preserve the original dimensions of structural members of a prototype building that has 21 stories with a total height of 80 m. The test specimen consists of a four-story, two-span by one-bay steel moment frame and three substitute layers placed on top of the moment frame. The substitute layers, which consist of concrete slabs and rubber bearings, are arranged to represent the upper stories of the prototype. From preliminary vibration tests, equivalence between the test specimen and the prototype is verified in terms of the lower mode natural periods and corresponding mode shapes. The test specimen when subjected to long-period ground motions exhibits cumulative ductilities more than four times those expected in Japanese seismic design, while the maximum story drifts remain nearly the same as those considered in the design. A number of cyclic inelastic deformations caused fractures at the bottom flanges of beam ends. According to these observations, the combination of large cumulative ductility demand, the weld quality of the field weld connections, and the promotion of strain concentrations at the toe of the bottom flange weld access hole by the presence of floor slabs caused the fractures and resultant smaller cumulative ductility relative to that observed in the bare beam tests.

原文English
頁(從 - 到)637-644
頁數8
期刊Journal of Structural Engineering
136
發行號6
DOIs
出版狀態Published - 2010

All Science Journal Classification (ASJC) codes

  • 土木與結構工程
  • 建築與營造
  • 一般材料科學
  • 材料力學
  • 機械工業

指紋

深入研究「Seismic resistance capacity of high-rise buildings subjected to long-period ground motions: E-defense shaking table test」主題。共同形成了獨特的指紋。

引用此