Statistical Distribution of Floor Response Spectra due to Different Types of Earthquake Ground Motions

Abstract eng:
Recent earthquakes have demonstrated that damage associated with Non-Structural Components (NSC) constitutes a substantial amount of total loss. Following this, the study of non-structural component has constituted an important component of Performance-based Earthquake Engineering (PBEE). Earthquake loading standards NZ 1170.5:2004 has introduced new provisions for the design of NSCs and building parts. The current provisions include factors for peak floor acceleration along the height, response amplification for different periods of component, ductility of the component itself and its fixings and a risk factor to reflect the failure consequence which is quite different from overseas counter parts. In this study, the response of a ductile low-rise reinforced concrete frame building located in high seismicity area with shallow soil has been presented. The building model is subjected to different sources and types of earthquakes records with two levels of annual probability of exceedence representing life safety or ultimate limit state (ULS) and operational or serviceability limit state (SLS). The statistical distribution of floor response spectra and its amplification peak floor acceleration along the height of the building are observed under ULS and SLS conditions. It is noted that the peak acceleration demand with respect to ground is deamplified up the height of the building. The floor response spectra up the height of the building have shown peaks near the modal periods which are not reflected by code provisions. This effect is observed both in SLS and ULS conditions, but more pronounced in SLS. Hence, different envelopes for component response amplification may be suggested for ULS and SLS conditions.

• Export as: BibTeX | MARC | MARCXML | DC | EndNote | NLM | RefWorks
• Add to your basket