Seismic Vulnerability Assessment of Non-structural Components using Bow-Tie Analysis

摘要

The importance of failure of non-structural building components during earthquake has generated considerable attention from decision makers. Non-structural components can be categorized into architectural, mechanical and electrical components. This paper will present a bow-tie based earthquake risk assessment analysis for mechanical and electrical non-structural component failure in buildings. Bow-tie approach integrates a fault tree and an event tree to represent causes, threats (hazards) and consequences in a common platform. Fault tree will investigate the scenarios (such as, site specific seismic hazard and non-structural component vulnerability) leading to failure. The event tree quantifies the sequence of events in the consequence analysis. The output of that bow-tie analysis is the consequence or outcome event probabilities. These probabilities will represent probability of losses due to mechanical and electrical non-structural components damage for a seismic event. The proposed bow-tie framework has been implemented for two case study buildings with different heights and seismic code design levels.