Pushover analysis of structures subjected to combined actions of earthquake and wind

Research output: Contribution to journalArticle

Authors

Colleges, School and Institutes

External organisations

  • Beijing Jiaotong University

Abstract

This paper puts forward a framework to investigate the structural performance of buildings subject to the combined action of earthquakes and wind. The study uses a pushover analysis to determine strength capacities of low- and medium-rise concrete structures to compare versus their strength, as inferred from the Chinese code for seismic design. The analysis addresses soil-structure interactions through the scrutiny of fixed-base and flexible-base conditions of three soil types ranging between dense and soft. The parametric study covers micro meteorological winds whose mean value spans between 0.5m/s and 20m/s. The simulated multi-load scenarios induce ductility levels going from 1 to 6 to totalise 288 case studies. The proposed framework reveals that consideration of earthquake and wind simultaneous effects could modify performance levels used for design through enhancing ductility demands. This evidences that, under current design recommendations, structures located in earthquake prone areas susceptible to unexpected levels of damage.

Details

Original languageEnglish
Article number111034
JournalEngineering Structures
Volume221
Early online date11 Jul 2020
Publication statusE-pub ahead of print - 11 Jul 2020

Keywords

  • Pushover analysis, Earthquake and wind actions, Performance-based earthquake engineering, Strength reduction factor, Soil-structure interaction