Experimental and numerical investigation on flexural behavior of non-prestressed concrete precast bottom slab with a section steel and two ribs

IF 3.4 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Materials and Structures Pub Date : 2024-08-13 DOI:10.1617/s11527-024-02436-5

Ming Li, Jianan Zhang, Biao Song, Yifan Li

{"title":"Experimental and numerical investigation on flexural behavior of non-prestressed concrete precast bottom slab with a section steel and two ribs","authors":"Ming Li, Jianan Zhang, Biao Song, Yifan Li","doi":"10.1617/s11527-024-02436-5","DOIUrl":null,"url":null,"abstract":"<div><p>This study introduces a novel non-prestressed concrete precast bottom slab with a section steel and two ribs, designated as NPBS2R. The research aimed to evaluate the effect of section steel form and steel trusses on the flexural performance of NPBS2R. A comprehensive analysis, including three-point static loading tests and numerical simulations, was conducted on five full-scale specimens. The findings reveal that all NPBS2R specimens satisfy the free support construction requirements. Compared to conventional non-prestressed precast bottom slabs with steel trusses (NPB), the NPBS2R’s cracking moment improved by 43.5–59.5%. The section steel, remaining unyielded in tests, demonstrates potential for reuse, with its form exerting minimal impact on the overall flexural stiffness of NPBS2R. The presence of steel trusses was observed to marginally enhance the flexural behavior, contributing to a 15.0% increase. The numerical study highlights that the section size of the section steel, the chord diameter of the steel truss, and the truss quantity significantly influence NPBS2R’s flexural performance. The theoretical values derived from the study closely align with the experimental and numerical outcomes, confirming the established calculation formula’s accuracy and reliability for practical engineering applications.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"57 7","pages":""},"PeriodicalIF":3.4000,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials and Structures","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1617/s11527-024-02436-5","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

This study introduces a novel non-prestressed concrete precast bottom slab with a section steel and two ribs, designated as NPBS2R. The research aimed to evaluate the effect of section steel form and steel trusses on the flexural performance of NPBS2R. A comprehensive analysis, including three-point static loading tests and numerical simulations, was conducted on five full-scale specimens. The findings reveal that all NPBS2R specimens satisfy the free support construction requirements. Compared to conventional non-prestressed precast bottom slabs with steel trusses (NPB), the NPBS2R’s cracking moment improved by 43.5–59.5%. The section steel, remaining unyielded in tests, demonstrates potential for reuse, with its form exerting minimal impact on the overall flexural stiffness of NPBS2R. The presence of steel trusses was observed to marginally enhance the flexural behavior, contributing to a 15.0% increase. The numerical study highlights that the section size of the section steel, the chord diameter of the steel truss, and the truss quantity significantly influence NPBS2R’s flexural performance. The theoretical values derived from the study closely align with the experimental and numerical outcomes, confirming the established calculation formula’s accuracy and reliability for practical engineering applications.

Abstract Image

查看原文本刊更多论文

带型钢和双肋的非预应力混凝土预制底板抗弯行为的实验和数值研究

本研究介绍了一种新型非预应力混凝土预制底板，带有型钢和两根肋条，命名为 NPBS2R。研究旨在评估型钢模板和钢桁架对 NPBS2R 抗折性能的影响。对五个全尺寸试样进行了全面分析，包括三点静态加载试验和数值模拟。研究结果表明，所有 NPBS2R 试件都能满足自由支撑结构的要求。与带钢桁架的传统非预应力预制底板（NPB）相比，NPBS2R 的开裂力矩提高了 43.5-59.5%。在测试中保持未屈服的型钢具有再利用的潜力，其形式对 NPBS2R 整体抗弯刚度的影响极小。据观察，钢桁架的存在略微增强了抗弯行为，增加了 15.0%。数值研究表明，型钢的截面尺寸、钢桁架的弦直径和桁架数量对 NPBS2R 的抗弯性能有显著影响。研究得出的理论值与实验和数值结果密切吻合，证实了所建立的计算公式在实际工程应用中的准确性和可靠性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Materials and Structures 工程技术-材料科学：综合

CiteScore

6.40

自引率

7.90%

发文量

222

审稿时长

5.9 months

期刊介绍： Materials and Structures, the flagship publication of the International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), provides a unique international and interdisciplinary forum for new research findings on the performance of construction materials. A leader in cutting-edge research, the journal is dedicated to the publication of high quality papers examining the fundamental properties of building materials, their characterization and processing techniques, modeling, standardization of test methods, and the application of research results in building and civil engineering. Materials and Structures also publishes comprehensive reports prepared by the RILEM’s technical committees.