钢筋混凝土悬臂梁采用倒t形截面的优点

Q1 Engineering
Abdul Kareem Muhammad Al-Shammaa, Ghusoon Sadiq Al-Qaisee, Bashar Rasheed Al-Hamami
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引用次数: 0

摘要

本研究的目的是寻找一种简单、快速、经济的方法来设计钢筋混凝土悬臂梁,以取代传统的方法。通常,混凝土梁被设计成t形截面,因此其翼缘在受压区内失效,并嵌入钢筋混凝土板。结构工程师可以为每个跨长选择合适的截面,但试错法可能会花费更多的精力和时间。悬臂梁的经济选择变得更加困难,特别是大跨度悬臂梁,由于它们已经暴露在显著的挠度。为了解决这一问题,目前对一些局部常见的不同配筋率的悬臂RC梁的t形截面进行了理论研究,并根据ACI -19的规定对其持续和即时挠度进行了校核。通过创建一个算法并使用Python 3.4软件,已经为每个所需的跨度长度确定了允许的部分。绘制了三条曲线,方便了倒t形和倒t形截面的最佳尺寸选择。此外,通过比较发现,倒t型截面的选择比倒t型截面的选择更经济,可以提供更大的跨度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Advantages of Using Inverted T-Sections to Construct Cantilever RC Beams
The aim of this study is to find a simple, fast, and economical method for designing RC cantilever beams instead of the traditional methods. Generally, the concrete beams have been designed as T-sections so that their flange has failed within the compression zone, which has embedded with reinforced concrete slab. The structural engineer can select the appropriate section for each span length, but the trial and error method may be used with more effort and time. The economic selection has been become more difficult for cantilever beams especially with a large span due to the significant deflections they have been exposed to. In order to solve this problem, a current theoretical study has been conducted on a number of locally common dropped and inverted T-sections for cantilever RC beams that reinforced with a different reinforcement ratios and their sustained and immediate deflections have been checked according to the ACI -19 provisions. By creating an algorithm and using the Python 3.4 software, the allowable sections have been identified for each required span length. Three curves have been drawn to choose the optimum dimensions for both dropped and inverted T-sections easily. In addition, by comparison, it has been found out that the selection of inverted T-sections has more economy to provide longer spans than dropped sections.
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来源期刊
CiteScore
2.90
自引率
0.00%
发文量
34
期刊介绍: The International Review of Civil Engineering (IRECE) is a peer-reviewed journal that publishes original theoretical papers, applied papers, review papers and case studies on all fields of civil engineering. The scope of the Journal encompasses, but is not restricted to the following areas: infrastructure engineering; transportation engineering; structural engineering (buildings innovative structures environmentally responsive structures bridges stadiums commercial and public buildings, transmission towers, television and telecommunication masts, cooling towers, plates and shells, suspension structures, smart structures, nuclear reactors, dams, pressure vessels, pipelines, tunnels and so on); earthquake, hazards, structural dynamics, risks and mitigation engineering; environmental engineering; structure-fluid-soil interaction; wind engineering; fire engineering; multi-scale analysis; constitutive modeling and experimental testing; construction materials; composite materials in engineering structures (use, theoretical analysis and fabrication techniques); novel computational modeling techniques; engineering economics. The Editorial policy is to maintain a reasonable balance between papers regarding different research areas so that the Journal will be useful to all interested scientific groups.
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