Static behavior of ribbed folded plate roof under vertical uniform load—Experimental study and meshfree method analysis

Renzhong Sun, Kejian Ma, Huagang Zhang, Fang Yu, Qiang Fang
{"title":"Static behavior of ribbed folded plate roof under vertical uniform load—Experimental study and meshfree method analysis","authors":"Renzhong Sun, Kejian Ma, Huagang Zhang, Fang Yu, Qiang Fang","doi":"10.1002/tal.2079","DOIUrl":null,"url":null,"abstract":"Folded plate roofs are widely used in building roofs due to their light weight and high stiffness. However, traditional folded plate roofs are often limited in application due to insufficient stiffness under the current trend of pursuing larger-span roofs. Ribbed folded plate roofs can effectively solve this problem because ribs not only increase the stiffness of the roof and reduce stress concentration, but they are also easy to be formed into various shapes to meet different needs for buildings. Therefore, the detailed analysis was carried out on a reinforced concrete ribbed folded plate roof (RCRFR) under the vertical uniform load to investigate its static behavior. The bearing capacity, failure mode, load–displacement relationship, and strain variation were obtained through the test. Additionally, based on the finite element (FE) method, not only a comparison was conducted between RCRFR and reinforced concrete ribless folded plate roof (RCLFR), but the influence of material nonlinearity and geometric nonlinearity on the structure was also investigated. Moreover, the bending characteristics of RCRFR under design load were analyzed based on the reproducing kernel particle method. The experimental results showed that this structure had good mechanical properties within the design load. In the overload stage, the concrete on the underside of the structure was severely damaged. Furthermore, the yielding of the ribbed plate's reinforcing bars caused the increased vertical deformation difference between the ribbed plate and the top chord, and the ribbed plate and the central ridge beam. Eventually, the failure of the anchorage of the ribbed plate's reinforcing bars anchored in the central ridge beam and the top chord led to the loss of structural load-bearing capacity. The FE analysis results demonstrated that ribs enhance the stiffness of the structure, with material nonlinearity having the primary impact and geometric nonlinearity exerting a secondary effect. The meshfree method analysis was in concordance with the experimental results as well as those of the FE analysis.","PeriodicalId":501238,"journal":{"name":"The Structural Design of Tall and Special Buildings","volume":"1 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Structural Design of Tall and Special Buildings","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1002/tal.2079","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

Folded plate roofs are widely used in building roofs due to their light weight and high stiffness. However, traditional folded plate roofs are often limited in application due to insufficient stiffness under the current trend of pursuing larger-span roofs. Ribbed folded plate roofs can effectively solve this problem because ribs not only increase the stiffness of the roof and reduce stress concentration, but they are also easy to be formed into various shapes to meet different needs for buildings. Therefore, the detailed analysis was carried out on a reinforced concrete ribbed folded plate roof (RCRFR) under the vertical uniform load to investigate its static behavior. The bearing capacity, failure mode, load–displacement relationship, and strain variation were obtained through the test. Additionally, based on the finite element (FE) method, not only a comparison was conducted between RCRFR and reinforced concrete ribless folded plate roof (RCLFR), but the influence of material nonlinearity and geometric nonlinearity on the structure was also investigated. Moreover, the bending characteristics of RCRFR under design load were analyzed based on the reproducing kernel particle method. The experimental results showed that this structure had good mechanical properties within the design load. In the overload stage, the concrete on the underside of the structure was severely damaged. Furthermore, the yielding of the ribbed plate's reinforcing bars caused the increased vertical deformation difference between the ribbed plate and the top chord, and the ribbed plate and the central ridge beam. Eventually, the failure of the anchorage of the ribbed plate's reinforcing bars anchored in the central ridge beam and the top chord led to the loss of structural load-bearing capacity. The FE analysis results demonstrated that ribs enhance the stiffness of the structure, with material nonlinearity having the primary impact and geometric nonlinearity exerting a secondary effect. The meshfree method analysis was in concordance with the experimental results as well as those of the FE analysis.
垂直均布荷载作用下的带肋折叠板屋顶静力行为--实验研究与无网格法分析
折叠板屋顶因其重量轻、刚度高而被广泛应用于建筑屋顶。然而,在当前追求大跨度屋面的趋势下,传统的折叠板屋面往往因刚度不足而应用受限。带肋折叠板屋面能有效解决这一问题,因为肋条不仅能增加屋面刚度,减少应力集中,而且易于形成各种形状,满足建筑物的不同需求。因此,我们对竖向均布荷载下的钢筋混凝土带肋折叠板屋顶(RCRFR)进行了详细分析,以研究其静态行为。通过试验获得了其承载能力、破坏模式、荷载-位移关系和应变变化。此外,基于有限元(FE)方法,不仅对 RCRFR 和钢筋混凝土无肋折叠板屋顶(RCLFR)进行了比较,还研究了材料非线性和几何非线性对结构的影响。此外,还基于再现核粒子法分析了 RCRFR 在设计荷载下的弯曲特性。实验结果表明,该结构在设计荷载范围内具有良好的力学性能。在超载阶段,结构底部的混凝土受到严重破坏。此外,肋板钢筋的屈服导致肋板与上弦、肋板与中央脊梁之间的垂直变形差增大。最终,锚固在中央脊梁和上弦上的肋板钢筋锚固失效,导致结构承载能力丧失。有限元分析结果表明,肋板增强了结构的刚度,材料非线性具有主要影响,几何非线性具有次要影响。无网格法分析与实验结果和有限元分析结果一致。
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
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信