铁-木组合梁承载能力

None Karrar K. Abdul Hussein, Abdulkhaliq Jaafer, None Murtaza A. Raheemah
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摘要

本文对钢筋混凝土简支木复合构件进行了试验研究。研究粘接连接。作为剪切连接层,选择合适长度的组合梁,研究其抗剪强度对一点荷载(1.2 m)冲击的影响。采用Sikadur 31触变性环氧树脂胶粘剂。该研究的主要目标是收集数据并提供有关拟议的铁浆木材复合材料(FTC)梁的结构行为的信息。研究了木材梁的厚度和宽度,剪切连接件上是否存在粘结层,以及下垂弯矩和占用弯矩的影响。FTC梁是一种相对较新的土木工程解决方案,其行为应进行研究,以制定相关的方法来计算其阻力。两次推出试验用于初步解决连接器的滑移和峰值负载限制。作者对钢筋混凝土板与木梁连接的刚度和强度进行了研究。这些标准对于组合梁的规划是至关重要的,因为组合梁框架连接的坚固性和质量决定了其性能。对组合梁试件进行三点加载试验。测量还表明,该连接近乎完美,因为在测试期间滑动最小(故障除外)。从下垂到弯曲的转变已经证明,从下垂到弯曲的转变可以减少高达24%的极限载荷。建议梁的荷载已经证明,从下垂到弯曲的转换可以减少高达24%的极限荷载。与他们的体重相比,在测试中表现得很好。环氧树脂(Sikadur 31)可用于在组件之间提供足够的粘合。当木材厚度从90 mm增加到190 mm时,其承载能力增幅最大,为48%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Ferrocement-Timber Composite Beams Loading capacity
This paper presents an experimental study of simply supported ferrocement timber composite members. An adherently bound link is investigated. As a shear connector layer, an appropriate length for this type of composite beam was chosen to study the effect of shear strength on the impact of one point load (1.2 m). Sikadur 31 thixotropic epoxy resin adhesive is used. The research's primary goal is to collect data and provide information on the structural behavior of proposed ferrocement timber composite (FTC) beams. The thickness and width of timber beams, the presence and absence of a bonding layer on the shear connector, and the influence of sagging and hogging bending moments were also investigated. FTC beams are a relatively new civil engineering solution, and their behavior should be investigated to develop relevant methods for calculating their resistance. Two push-out tests were used to tentatively resolve the connector's slip and pinnacle load limits. The stiffness and strength of the connection utilized to bind a ferrocement slab to a timber beam were investigated by the authors. These criteria are critical for composite beam planning because the solidity and quality of a composite beam framework's connections determine its performance. A three-point loading test was performed on the composite beam specimens. Measurements also demonstrate that the connection is near-perfect because the slide is minimal during the test (except at failure). Converting from sagging to It has been witnessed that converting from sagging to hogging bending reduces the ultimate load by up to 24%. The suggested beams' loading It has been witnessed that Converting from sagging to hogging bending reduces the ultimate load by up to 24%.shown to be excellent when compared to their weight in tests. Epoxy resin (Sikadur 31) can be used to provide adequate bonding between the components. The highest gain in the loading capacity was 48% when the timber thickness was increased from 90 to 190 mm.
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