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首页> 外文期刊>International journal of steel structures >Flexural Str ength Behaviour of Bolted Built-Up Cold-Formed Steel Beam with Outstand and Extended Stiffener
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Flexural Str ength Behaviour of Bolted Built-Up Cold-Formed Steel Beam with Outstand and Extended Stiffener

机译：带外加加劲肋的螺栓固定冷弯型钢梁的抗弯强度特性

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摘要

Cold-formed steel (CFS) is a popular structural and non-structural material that is utilised as roof truss, wall panel and storage racks. But nowadays, CFS is selected and proposed as column and beam in building construction. CFS with open-section and very thin thickness is prone to deform and buckle in large condition. Therefore, the problem must be solved by proposing a new section that is matched up or formed of two or more open-sections to be one new section, shape and cross-section area. There are two types of channel-section and a connection is used to produce a bolted built-up CFS beam in the study. The first type is jointed with bolt and nut on stiffener or lipped, which is known as outstand stiffener, and another type is connected by locating the bolt and nut on web element and recognised as extended stiffeners. The objective of the study is to determine the flexural strength and load-deformation behaviour of both types of bolted built-up CFS section. Then, the experimental result is verified with the Standard of Practice, American Iron and Steel Institute and BS EN 1993-1-3, Design of steel structures (2006). As a result, bolted built-up CFS beam with extended stiffener and a span of bolt with constant value of 22.5mm is expressed as a good result of flexural strength. In addition, the flexural strength of both beams is dependent only on spacing or bolt location.
机译：冷弯型钢（CFS）是一种流行的结构和非结构材料，被用作屋顶桁架，墙板和储物架。但是如今，CFS被选为建筑施工中的支柱和梁。断面大且厚度很薄的CFS在大条件下易于变形和弯曲。因此，必须通过提出一种新的部分来解决该问题，该新的部分由两个或更多个开口部分匹配或形成为一个新的部分，形状和横截面面积。在研究中，通道截面有两种类型，并且使用连接生成锚固的CFS梁。第一种通过螺栓和螺母在加强筋上或搭接处接合，这被称为“突出加强筋”，另一种通过将螺栓和螺母定位在腹板上而被连接，并被认为是延伸的加强筋。该研究的目的是确定两种类型的螺栓固定CFS型材的抗弯强度和载荷变形行为。然后，通过美国钢铁协会实践标准和BS EN 1993-1-3，钢结构设计（2006）验证了实验结果。结果，螺栓组合的CFS梁加长了加劲肋，螺栓跨度恒定为22.5mm，表现出良好的抗弯强度。另外，两个梁的抗弯强度仅取决于间距或螺栓位置。

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