EXPERIMENTAL STUDY ON INFLUENCE OF SHEAR SPAN RATIO ON PRESTRESSED UHPC SIMPLY SUPPORTED

摘要：

　　In order to study the influence mechanism of shear span ratio on simply supported prestressed ultra-high performance concrete beams without web reinforcement, four unbonded post-tensioned UHPC prestressed tested beams with different shear span ratios were studied.The relationships between shear span ratio and bearing capacity, inclined angle of oblique crack, crack width, stress increment of prestressed tendons, strain of non-prestressed longitudinal tendons, deflection of loading points are analyzed.The results show that the bearing capacity and oblique crack inclination decrease with the increased of shear span ratio.The ductility, crack width, stress increment of prestressed tendons, strain and deflection of non-prestressed longitudinal tendons increase with the increased of shear span ratio.

关键词： Prestressed UHPC beams Shear span ratio Stress increment

作者: Lingzhi Jin Long Wang

作者单位: Guilin University of science and technology,Guilin 541004,China

会议类型: 国际会议

会议名称: The 2nd International Conference on UHPC Materials and Structures, UHPC2018-China(第二届超高性能混凝土材料和结构国际会议)

会议地点: 福州

会议语种:英文

页码: 650-659

在线出版日期: 2018-11-07（万方平台首次上网日期，不代表论文的发表时间）