题名: |
Development of Suitable Test Methods for the Screw Connections in Cold-Formed Steel Roof Battens |
正文语种: |
英文 |
作者: |
Mayooran Sivapathasundaram;and Mahen Mahendran |
作者单位: |
Queensland Univ |
关键词: |
Cold-formed steel structures; Light-gauge steel roofing systems; Steel roof battens; Pull-through failures; Test methods; Experimental study; Metal and composite structures. |
摘要: |
The roofing systems of low-rise buildings are commonly made of thin, high-strength steel roof sheeting and battens. These light-gauge steel roofing systems are subjected to high-wind uplift loads during tropical cyclones and thunderstorms. In recent times, roof batten-to-rafter or truss connection failures have been identified as a major cause of severe roof failures during high-wind events. Most of these connection failures are in the form of localized pull-through failures of the bottom flanges of steel roof battens at their screw connections. The design practice at present is based on expensive and time-consuming full-scale tests or inappropriate small-scale tests. Hence, there is an urgent need to develop suitable test methods to determine the pull-through capacity of roof battens. This paper presents the details of an experimental study undertaken to investigate pull-through failures of light-gauge steel roof battens using both full-scale and small-scale tests. The investigation showed that the design capacity equations and test methods given in current cold-formed steel design standards for single-screw connections cannot be used for roof batten pull-through failures. This paper recommends suitable small-scale test methods and associated calculation methods to determine the pull-through capacities of roof battens. DOI: 10.1061/(ASCE)ST.1943-541X .0001476. © 2016 American Society of Civil Engineers. |
出版日期: |
2016.06 |
出版年: |
2016 |
期刊名称: |
Journal of Structural Engineering |
卷: |
Vol.142 |
期: |
NO.06 |
页码: |
04016025 |