湖南大学学报（自然科学版）2025，Vol.52Issue(7)：38-49,12.DOI:10.16339/j.cnki.hdxbzkb.2025065
钢筋混凝土开洞梁抗剪承载力统一模型及其可靠度分析
Unified Shear Bearing Capacity Model of Reinforced Concrete Beams with Openings and Its Reliability Analysis
摘要
Abstract
To make up for the deficiency of the existing shear bearing capacity model of reinforced concrete beams with openings,a unified shear bearing capacity model was established based on the codes,considering the parameters such as the failure mode,opening shape,opening size,opening position(horizontal and vertical),reinforcement form and concrete strength.Based on 159 test data,the unified shear bearing capacity model was estabished according to the existing codes,and the test data were used to evaluate the existing model and the unified model.The results showed that it was reasonable to establish the shear strength model according to the failure modes.The unified shear bearing capacity model had a high degree of accuracy.The average value AV,the integral absolute error IAE,and the mean relative error MRE of the shear bearing capacity model under the opening side shear compression failure mode were 1.035,0.177,and 0.231,respectively.The AV,IAE,and MRE of the shear bearing capacity model under the shear failure mode of the chord were 1.007,0.166,and 0.212,respectively.With the increase in concrete strength,the reliability index β gradually increased.With the increase of the opening height,the reliability index β decreased gradually.When the opening height was 0.5de(sectional effective height),the reliability index β can still meet the requirements of the code.It is suggested that the opening height should not exceed 0.4de.In a word,the unified shear bearing capacity model established in this paper has high applicability,accuracy,and reliability.关键词
钢筋混凝土开洞梁/加固配筋形式/洞口参数/抗剪承载力/统一模型/可靠度分析Key words
reinforced concrete beam with openings/reinforcement form/opening parameters/shear bearing capacity/unified model/reliability analysis分类
建筑与水利引用本文复制引用
张扬,熊学玉,颜阳,董震..钢筋混凝土开洞梁抗剪承载力统一模型及其可靠度分析[J].湖南大学学报（自然科学版）,2025,52(7):38-49,12.基金项目
国家自然科学基金资助项目(52078364),National Natural Science Foundation of China(52078364) （52078364）
安徽省住房城乡建设科学技术计划资助项目(2022-YF116),Anhui Province of Housing and Urban-Rural Construction Science and Technology Plan Project(2022-YF116) （2022-YF116）
上海市住房和城乡建设管理委员会科研项目(2021-002-022),the Scientific Research Project of Shanghai Housing and Urban-Rural Construction Management(2021-002-022) （2021-002-022）
