小剪跨比钢筋混凝土牛腿承载力研究进展

Advances in Research of Strength of Reinforced Concrete Corbels Having Small Shear Span Ratio

针对小剪跨比钢筋混凝土牛腿承载力的研究状况,对国内外相关研究的理论方法等进行总结,详细介绍了目前国内外常用的桁架模型法以及剪摩理论等计算方法,分析了其各自的特点及适用条件,给出了有待研究的问题。指出加强小剪跨比牛腿受剪机理研究、计算模型的改进和完善、数值分析和试验相结合是小剪跨比牛腿受剪承载力研究的发展方向,为有关小剪跨比牛腿规范条文的修订提供更加合理的依据。

Based on a review of current situation about the research work, an introduction is given to some theoretical methods commonly used at home and aboard ,with emphasis placed on the strut- and-tie method and the shear friction method as well as their characteristics and applicability, and some problems needed for further study are put forward. It is pointed out that the perfection of shearing mechanism model, the improvement of computational method, and the combination of numerical analysis with experimental study are the trend of further research on reinforced concrete corbels of small shear span ratio. The present study provides a train of thought for further research on the building code of reinforced concrete corbels having small shear span ratio.