The Evaluation and Analysis of Performance-Based Design on Evacuation and Smoke Control System in Atrium Buildings

• Main Authors: Chao, Hao, 趙灝
• Other Authors: Chen, Sih-Li
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/32492107263682586457

碩士 === 國立臺灣大學 === 機械工程學研究所 === 91 === Due to the special space of atrium buildings, “performance based” fire safety design, a process is the best precaution to assure the fire safety. However, present fire safety codes in Taiwan only focus on “prescribed codes,” which fails to practice the standard fire safety norm to atrium buildings as other regular buildings. This thesis first surveys theories about evacuation. By taking the concept of safety margin time as the criterion of assessing the life safety, the thesis aims at the “Evaluation Trial Design” stage of performance-based design process, and further presents three evaluation methodologies, algebraic equations, computer model simulation, and reliability analysis. In addition, the example, one atrium in Taipei, is employed all these methods to evaluate its fire safety. The method of algebraic equations is cited from Japanese performance-based codes, but the equations cannot be perfectly applied to atrium buildings. As to the computer model, first the research applies SIMULEX, software for simulation of evacuation, to calculate people’s evacuating time, and then use the outcome to simulate the phenomena that smoke flows in the atrium by PHOENICS, a CFD software. Reliability analysis involves uncertainty concepts from probability. It first builds performance function of life safety reliability. Then variable are treated as random numbers and the probability of failure is obtained by Monde Carlo simulation method. Three methods are evaluated in two viewpoints: how to construct atrium buildings and how to take onto safety design. The thesis concludes that computer model simulation is the best tool to assess the fire safety of atrium buildings, and safety reliability method shows the greatest effects to safety design.