| Author: | Zhang, Qin |
| Title: | The parametric study of tall building fire resulting in a collapse |
| Advisors: | Usmani, Asif Sohail (BSE) |
| Degree: | M.Eng. |
| Year: | 2021 |
| Subject: | Structural failures -- Risk assessment Building failures -- Risk assessment Fire extinction -- Accidents -- Prevention Hong Kong Polytechnic University -- Dissertations |
| Department: | Department of Building Services Engineering |
| Pages: | viii, 90 pages : color illustrations |
| Language: | English |
| Abstract: | Since the severe casualties of tall building collapse induced by fire, the research of tall building fire failure mechanisms is becoming popular these years. Study about the mechanisms of fire-induced collapse helps to learn what happened with the structural elements in the whole fire process and these theoretical principles are the prerequisites of fire-protected applications. Aparametric study is a fundamental method to learn the mechanisms of fire resulting in collapse. Concerning the localized failure resulting in a broader collapse, this project focus on the one-storey fire structure. This project defined eight parameters and used two ways to compare their impact on the collapse mechanisms. The first one is to calculate the pull-in force related to collapse, and the second one is to simulate the collapse temperature. The pull-in force and the collapse temperature can be seen as two essential factors associated with the whole structure collapse. A larger pull-in force indicates the beam is stronger, and lower collapse temperature implies the structure is more vulnerable to fire and result in collapse. The results of the calculation of the pull-in force show that only increasing the universal column size leads to a smaller pull-in force, which results in a weaker beam. Increasing other parameters all lead to a stronger beam. And the simulation results indicate a similar finding-only increasing the UC size sparks off a higher collapse temperature, making the structure harder to collapse. And length of the beam, uniformly distributed load and universal column size are the key parameters resulting in a collapse of the tall building fire. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 5748.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 2.06 MB | Adobe PDF | View/Open |
Copyright Undertaking
As a bona fide Library user, I declare that:
- I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
- I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
- I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.
Please use this identifier to cite or link to this item:
https://theses.lib.polyu.edu.hk/handle/200/11273