摘要
运用有限单元法代替传统的试验方法，分析具有不同配筋率、跨高比、剪跨比及加荷形式的无腹筋ＲＣ梁的受剪性能与破坏机理，总结出无腹筋ＲＣ梁受剪性能随跨高比或剪跨比连续变化的规律性。在此基础上，提出了无腹筋ＲＣ梁的受剪失效模式、计算模型及相应的计算方法。通过引入“当量剪跨比”的概念，将均布荷载与集中荷载作用下的无腹筋ＲＣ深梁、短梁及浅梁的受剪承载力计算统一起来。所建议的公式与短梁试验结果符合良好，并与现行《混凝土结构设计规范》（ＧＢＪ１０－８９）有很好的衔接。
This paper substitutes nonlinear analysis method of reinforced concrete finite element for traditional experimental method. Mechanical behaviors and failure properties of reinforced concrete beams are analyzed with different reinforcement ratios, span to height ratios, shear span to height ratios and loading forms. Based on this three mechanical models, corresponding failure models, and calculation methods of reinforced concrete beams are proposed. Moreover, by introducing the concept of 'equivalent shear span to height ratio',a unified analysis method of shearing capacity of R.C. deep, short and shallow beams under concentrated and evenly distributed loads is proposed. It is compatible with experimental results of short beams, and is in line with the current Chinese design code of concrete structure(GBJ10-89).
出处
《郑州工业大学学报》
1998年第2期24-29,共6页
Journal of Zhengzhou University of Technology
