Cursory seismic drift assessment for buildings
in moderate seismicity regions
Zhu Yong (Öì ÓÂ)1, R.K.L. Su2 and Zhou Fulin (Öܸ£ÁØ)1
1. Earthquake Engineering Research Test Centre and Key Lab of Earthquake
Engineering and Application Technology of Guangdong Province, Guangzhou
University
2. Department of Civil Engineering, The University of Hong Kong
Abstract: This paper outlines a methodology to
assess the seismic drift of reinforced concrete buildings with limited
structural and geotechnical information. Based on the latest and the most
advanced research on predicting potential near-field and far field earthquakes
affecting Hong Kong, the engineering response spectra for both rock and soil
sites are derived. A new step-by-step procedure for displacement-based seismic
hazard assessment of building structures is proposed to determine the maximum
inter-storey drift demand for reinforced concrete buildings. The primary
information required for this assessment is only the depth of the soft soil
above bedrock and the height of the building. This procedure is further extended
to assess the maximum chord rotation angle demand for the coupling beam of
coupled shear wall or frame wall structures, which may be very critical when
subjected to earthquake forces. An example is provided to illustrate calibration
of the assessment procedure by using actual engineering structural models.
Keywords: seismic hazard assessment; response
spectrum; soil site; rock site; displacement-based; inter-storey drift; coupling
beams; chord rotation angle
