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材料导报  2025, Vol. 39 Issue (22): 24100092-9    https://doi.org/10.11896/cldb.24100092
  无机非金属及其复合材料 |
不锈钢筋珊瑚海水混凝土梁抗剪性能试验及抗剪承载力计算
区王生1, 徐炜圣2, 覃钦泉2, 陈宗平1,2,*
1 南宁学院土木与建筑工程学院,南宁 530200
2 广西大学土木建筑工程学院,南宁 530004
Shear Performance Tests and Shear Bearing Capacity Calculation of Stainless Steel Reinforced Coral Aggregate Concrete
OU Wangsheng1, XU Weisheng2, QIN Qinquan2, CHEN Zongping1,2,*
1 College of Architecture and Civil Engineering, Nanning University, Nanning 530200, China
2 College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China
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摘要 为对不锈钢筋珊瑚海水混凝土(SSRCAC)梁的抗剪性能进行研究,考虑剪跨比、面积配箍率、纵筋配筋率和钢筋种类设计了10个试件,其中包括8个SSRCAC梁试件以及2个普通钢筋珊瑚海水混凝土梁试件;通过剪切性能试验获取了各试件的荷载-跨中挠度曲线,并分析了其抗剪承载力、应变分布以及剪切延性。试验结果表明,SSRCAC典型破坏形态为剪压破坏,但各试件中不锈钢箍筋未能达到屈服强度;不同剪跨比λ下,裂缝的发展以及数量的差异不大,但剪跨比对抗剪承载力以及剪切延性的影响较明显。与普通钢筋试件相比,剪跨比λ为1.0和2.0的情况下,不锈钢筋试件的抗剪承载力分别比普通钢筋试件高18.4%和64.4%。纵筋配筋率对抗剪承载力的贡献不大。最后,考虑不锈钢筋和珊瑚海水混凝土的影响,提出了SSRCAC抗剪承载力计算方法,可为此类构件在海洋工程方面的应用提供试验基础。
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区王生
徐炜圣
覃钦泉
陈宗平
关键词:  不锈钢筋  珊瑚海水混凝土  梁  抗剪性能  抗剪承载力    
Abstract: In order to investigate the shear performance of stainless steel reinforced coral aggregate sea-sand-sea water concrete beams (SSRCAC), ten specimens of SSRCAC beams were designed considering the effects of shear span ratio, spacing of stirrups, reinforcement ratio, and types of reinforcing steel, which included eight specimens with stainless steel reinforcing bars and two specimens with steel reinforcing bars. Through the test, load-displacement curves were obtained, and the shear capacity, strain distribution, and shear ductility were analyzed. The results show that the typical failure mode of the SSRCAC under shear is shear-compression failure, and the stainless steel stirrups of all specimens basically do not reach the yield strength. The development and the number of cracks in specimens with different shear span ratios show no significant differences. Shear span ratio has a large influence on the shear capacity and shear ductility of the specimens. With the shear span ratio λ of 1.0 and 2.0, the shear capacity of stainless steel reinforcement specimens is 18.4% and 64.4% higher than that of carbon steel reinforcement, respectively. The longitudinal reinforcement ratio has little influence on the shear capacity. Finally, considering the effects of stainless steel reinforcement and coral aggregate concrete, a design method for the shear capacity of SSRCAC beams was proposed, which can provide test basis for the application of such structures in marine engineering.
Key words:  stainless steel reinforcement    coral aggregate concrete    beam    shear performance    shear bearing capacity
出版日期:  2025-11-25      发布日期:  2025-11-14
ZTFLH:  TU398+.9  
基金资助: 国家自然科学基金(51578163);广西科技计划(桂科AD25069072)
通讯作者:  *陈宗平,博士,广西大学土木建筑工程学院教授、博士研究生导师。主要从事结构工程、海洋工程方面教学与研究工作。zpchen@gxu.edu.cn   
作者简介:  区王生,南宁学院土木与建筑工程学院高级工程师,在陈宗平教授的带领下开展研究。目前主要研究领域为海洋及近海混凝土结构。
引用本文:    
区王生, 徐炜圣, 覃钦泉, 陈宗平. 不锈钢筋珊瑚海水混凝土梁抗剪性能试验及抗剪承载力计算[J]. 材料导报, 2025, 39(22): 24100092-9.
OU Wangsheng, XU Weisheng, QIN Qinquan, CHEN Zongping. Shear Performance Tests and Shear Bearing Capacity Calculation of Stainless Steel Reinforced Coral Aggregate Concrete. Materials Reports, 2025, 39(22): 24100092-9.
链接本文:  
https://www.mater-rep.com/CN/10.11896/cldb.24100092  或          https://www.mater-rep.com/CN/Y2025/V39/I22/24100092
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