期刊
JOURNAL OF STRUCTURAL ENGINEERING
卷 142, 期 6, 页码 -出版社
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)ST.1943-541X.0001476
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
资金
- Australian Research Council [DP120103366]
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. (C) 2016 American Society of Civil Engineers.
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