钢筋钢纤维高强混凝土梁受弯承载力研究  

Research on flexural capacity of steel fiber reinforced high-strength concrete beams

作　　者：谢鹏宇 Xie Pengyu(Shaanxi Provincial Land Engineering Construction Group,Xi’an 710075,China)

机构地区：[1]陕西省土地工程建设集团有限责任公司

出　　处：《山西建筑》2019年第22期46-48,共3页Shanxi Architecture

摘　　要：钢纤维高强混凝土作为一种新型材料,综合了钢纤维混凝土和高强混凝土优点,相比于普通混凝土,具有更好的刚度、延性、抗裂度、耐久性等性能。选取22根钢筋钢纤维高强混凝土试件梁及3根钢筋高强混凝土对比梁受弯承载力进行研究,对其开裂弯矩和极限弯矩进行计算,将计算值与试验值进行对比分析,对计算公式进行优化并提出新的计算方法。结果表明,运用新方法计算出的结果,开裂弯矩和极限弯矩的试验值理论值之比的平均值均为1. 00,标准差分别为0. 13和0. 05,整体吻合较好。对于钢筋钢纤维高强混凝土梁受弯承载力的计算,提出新的计算方法具有较高的精度和稳定性。Steel fiber high-strength concrete is a new type of material integrated the advantages of both steel fiber concrete and high-strength concrete. Compared with the common concrete,steel fiber high-strength concrete have better performances such as stiffness,ductility,crack resistance capacity,durability. This paper selected 22 steel fiber reinforced high-strength concrete test beams and 3 reinforced high-strength concrete comparative beams as the research object. The cracking bending moment and ultimate bending moment is calculated and compared with the experimental values. Then optimization the formula in this paper and put forward the new calculation method. The results show that good agreement between prediction results and test results for cracking bending moment and ultimate bending moment is achieved with an average ratio of test results to predicted results being both 1. 00,the standard deviation being 0. 13 and 0. 05. The new calculation method has the high accuracy and stability on the calculation of flexural capacity of steel fiber reinforced high-strength concrete beams.

关 键 词：钢纤维 高强混凝土 受弯 计算方法 

分 类 号：TU375.1[建筑科学—结构工程]