采用对称和不对称槽形梁的钢-混凝土组合梁试验研究

IF 1.1 Q4 MECHANICS

Curved and Layered Structures Pub Date : 2022-01-01 DOI:10.1515/cls-2022-0019

H. W. Al-Thabhawee

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引用次数: 0

摘要

摘要:本研究旨在探讨混凝土板与对称和不对称城堡梁共同作用的性能。螺栓连接件用于连接混凝土板和钢截面。目前，在建筑施工中，使用连体钢梁来构建钢-混凝土组合梁是一种常见的做法。研究了5根简支组合梁在两点荷载作用下的受力情况。2个标准钢梁试件作为对照试件，3个柱形钢梁试件作为对照试件。其中一个样品是用两个不同的标准截面(IPE120/HEA120)制成的具有不对称截面的城堡形钢梁建造的。各组合试件的混凝土板具有相同的尺寸和性能。试验结果表明，与母截面组合梁相比，组合梁的强度和刚度都有显著提高。IPE120截面复合梁的极限承载能力比母梁高46%，宽缘HEA120截面复合梁的极限承载能力比母梁控制试件高21%。采用不对称柱形梁(IPE120/HEA120)构建的复合试件的极限承载能力比采用标准截面构建的对照试件分别提高了69%和12%。

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Experimental investigation of composite steel–concrete beams using symmetrical and asymmetrical castellated beams

Abstract This study aims to investigate the behavior of concrete slabs acting compositely with symmetrical and asymmetrical castellated beams. Stud connectors are used to connect the concrete slab and steel section. The use of castellated steel beams to build up composite steel-concrete beams is now common practice in building construction. Five simply supported composite beams were examined under two-point loading. Two specimens built up from standard steel beams were used as control specimens and three specimens were built up from castellated steel beams. One of these specimens was built up using a castellated steel beam with an asymmetrical cross-section fabricated from two different standard sections (IPE120/HEA120). The concrete slab of all composite specimens had the same dimensions and properties. The experimental results showed that strength and rigidity were considerably greater for composite castellated steel beams compared to composite beams built up from the parent sections. The ultimate load capacity of a composite castellated beam fabricated from an IPE120 section was 46% greater than that of a composite beam built up using the parent beam, and the ultimate load capacity of a composite castellated beam fabricated from a wide-flanged HEA120 section resulted in an increase of 21% over the parent beam control specimen. The ultimate load capacity of the composite specimen built up using the asymmetrical castellated beam (IPE120/HEA120) achieved increases of 69% and 12%, respectively, compared to the control specimens built up from standard sections.

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来源期刊

Curved and Layered Structures MECHANICS-

CiteScore

2.60

自引率

13.30%

发文量

审稿时长

14 weeks

期刊介绍： The aim of Curved and Layered Structures is to become a premier source of knowledge and a worldwide-recognized platform of research and knowledge exchange for scientists of different disciplinary origins and backgrounds (e.g., civil, mechanical, marine, aerospace engineers and architects). The journal publishes research papers from a broad range of topics and approaches including structural mechanics, computational mechanics, engineering structures, architectural design, wind engineering, aerospace engineering, naval engineering, structural stability, structural dynamics, structural stability/reliability, experimental modeling and smart structures. Therefore, the Journal accepts both theoretical and applied contributions in all subfields of structural mechanics as long as they contribute in a broad sense to the core theme.