Strength and Deformability of Structural Steel for Use in Construction

Civil Engineering Journal Pub Date : 2024-03-01 DOI:10.28991/cej-2024-010-03-09

B. Kulbayev, Vladimir Lapin, Alexander Shakhnovich, Yeraly Shokbarov, T. Tuleyev, S. Aldakhov, Yerken Aldakhov, Alimzhan Ali

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Abstract

The purpose of the study is an experimental determination of the stress-related characteristics of the structural steel produced in the Republic of Kazakhstan for use in conventional and earthquake-resistive construction. Since 2015, the construction industry has been using European regulatory documents—Eurocodes—as a statutory framework. In particular, the Eurocode 1993 for steel structures and the Eurocode 1998 for the design of earthquake-resistant structures However, the study of stress-related properties of structural steel using experimental methods of ISO standards has not been performed. Therefore, in the construction industry of the Republic of Kazakhstan, steel-work structures have been used in fairly limited volume since 2015. The experimental studies were conducted on 7 types of structural steel with thicknesses of 8, 10, and 20 mm manufactured by Arcelor Mittal. The yield strength, ultimate tensile strength (breaking stress), and tensile strength at break were studied. The experimental studies were carried out on the basis of ISO standards. In each test run, 5 samples were used. In two series, 20 samples each were tested, which made it possible to estimate the yield strength and strength distribution functions. The correlation relationships between Brinell hardness and yield and strength limits have been studied. As a result of experimental studies, it was found that the strength and deformability parameters fully comply with the requirements of Eurocode 1993. Based on the application of the Student's test, it is revealed that the distribution functions of yield strength and resistance correspond to the normal law (Gaussian function). The calculation of a three-story, two-span residential building with box section columns for construction in an area with a seismicity of 8 points is performed by the finite element method. The work results will significantly increase the scope of Kazakhstani structural steel use in seismic and conventional areas of the Republic of Kazakhstan. Doi: 10.28991/CEJ-2024-010-03-09 Full Text: PDF

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建筑用结构钢的强度和变形性

本研究的目的是通过实验确定哈萨克斯坦共和国生产的用于传统建筑和抗震建筑的结构钢的应力相关特性。自 2015 年以来，建筑行业一直使用欧洲规范文件--欧洲规范作为法定框架。特别是关于钢结构的《欧洲规范 1993》和关于抗震结构设计的《欧洲规范 1998》。然而，尚未使用 ISO 标准的实验方法对结构钢的应力相关特性进行研究。因此，自 2015 年以来，在哈萨克斯坦共和国的建筑行业中，钢结构的使用量相当有限。实验研究针对 Arcelor Mittal 公司生产的厚度为 8、10 和 20 毫米的 7 种结构钢进行。研究了屈服强度、极限拉伸强度（断裂应力）和断裂拉伸强度。实验研究是根据 ISO 标准进行的。每次试验使用 5 个样品。在两个系列中，每个系列测试了 20 个样品，从而可以估算出屈服强度和强度分布函数。还研究了布氏硬度与屈服强度和强度极限之间的相关关系。实验研究结果表明，强度和变形性参数完全符合《欧洲规范 1993》的要求。根据学生试验的应用，发现屈服强度和阻力的分布函数符合正态分布（高斯函数）。采用有限元法计算了在地震烈度为 8 点的地区建造的三层两跨箱形截面柱住宅楼。工作成果将大大提高哈萨克斯坦共和国地震区和常规地区的哈萨克斯坦结构钢使用范围。Doi: 10.28991/CEJ-2024-010-03-09 全文：PDF

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Civil Engineering Journal

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