钢筋混凝土梁斜截面受剪承载力分析-结构工程专业论文.docxVIP

西安建筑科技大学硕士学位论文 西安建筑科技大学硕士学位论文 西安建筑科技大学硕士学位论文 西安建筑科技大学硕士学位论文 Research on Inclined Section Shear Capacity of Reinforced Concrete Beams Specialty：Structural Engineering Name： Wang Zheng Instructor： Prof.Shi Qing Xuan ABSTRACT Shear behavior of reinforced concrete beam is complex, including numerous influencing factors. Although lots of researches have been working on shear behavior of beams for years, there is not a perfect shear theory yet. Most shear formulas in current codes are semi-empirical or empirical, rather than clarify shear models, which limits their applicable scope. Therefore, it is necessary to do further research on the shear capacity. Firstly, several theory models on the shear capacity of reinforced concrete beams are reviewed and compared of the advantage and disadvantage, and the shear model of Chinese code, American code and European code was listed, from which it can be seen that shear behavior is insufficiently understanded and the theory model is diversified at home and abroad. By contrast, truss model is widely used, which is the trend of the development of the shear theory.Secondly, the shear capacity calculation method of reinforced concrete beams with stirrups of Chinese code (GB50010-2010), American code (ACI318-08) and the European code ( EN1992-1-1: 2004)were compared, and the effects of the concrete strength, shear-span ratio, longitudinal reinforcement ratio for shear strength of these code was also studied. The effects of the concrete strength, shear-span ratio, longitudinal reinforcement ratio were also studied. According to domestic and international 219 experimental results of the shear capacity of simply supported reinforced concrete beams under pointload, calculation and experimental values of the standard shear capacity are compared and analyzed among Chinese code, American code and European code, and the minimum or maximum stirrup ratio were comparatively analyzed. The results show that shear capacity for reinforced concrete bea