Seismically Induced Overturning of Objects and Filtering Effects of Buildings
عنوان مقاله: Seismically Induced Overturning of Objects and Filtering Effects of Buildings
شناسه ملی مقاله: JR_JSEE-7-2_005
منتشر شده در در سال 1384
شناسه ملی مقاله: JR_JSEE-7-2_005
منتشر شده در در سال 1384
مشخصات نویسندگان مقاله:
David Franke - Department of Civil and Environmental Engineering, University of Melbourne
Nelson Lam - University of Melbourne
Emad Gad - Department of Civil and Environmental Engineering, University of Melbourne
Adrian Chandler - Centre for Earthquake Engineering Research (CEER), Department of Civil Engineering, University of Hong Kong
خلاصه مقاله:
David Franke - Department of Civil and Environmental Engineering, University of Melbourne
Nelson Lam - University of Melbourne
Emad Gad - Department of Civil and Environmental Engineering, University of Melbourne
Adrian Chandler - Centre for Earthquake Engineering Research (CEER), Department of Civil Engineering, University of Hong Kong
The seismic performance of unrestrained objects is critically dependent on the displacement demand behaviour of the building floor. The risk of an object overturning can be estimated from the dual independent criteria of object width and height, as opposed to the usual single criterion of the object aspect ratio (or slenderness ratio) based on static analysis. An object is at risk from overturning if the displacement demand of the floor exceeds one-third of the width of the object. According to floor amplification clauses in earthquake codes of practice, the filtering effects of a building amplify ground motions up its height. However, the building may also behave as an isolation medium, which attenuates the transmitted motions. These two perceptions seem contradictory. This paper aims to resolve this significant dilemma and hence contribute to improving the fundamental understanding of the dynamical processes of damage to building contents. Floor spectra of buildings, as presented in the paper, demonstrate both amplification and isolation actions.
کلمات کلیدی: Non-structural Components, Building Contents, Overturning, Rocking, Displacement Floor Response Spectra
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/1303979/