钢筋增强高韧性水泥基复合材料梁受剪延性分析

摘要

为分析钢筋增强超高韧性水泥基复合材料简支梁在集中荷载作用下的受剪承载力和延性性能，对9根超高韧性水泥基复合材料梁和1根混凝土梁开展了集中荷载作用下不同配筋率、不同配箍率及不同剪跨比的抗剪试验研究。结果表明，钢筋增强超高韧性水泥基复合材料梁较之普通钢筋混凝土梁具有更好的抗剪性能和延性性能。介绍了加载试验中试件规格、加载方式及测量设备等，分析了影响试件受剪延性性能的因素。%In order to study the anti-shear capacity of reinforced ultra-high toughness cement-base simple-supported composite-material beam under concentrated load, a series of shear tests were conducted for nine composite-material beams and one normal concrete beam. Through the tests, the influence evaluation from parameters of reinforcement ratio, stirrup ratio and shear-span ratio on beam's shear performance are conducted. The results show that compared with normal concrete beam, the composite-material beam possesses better anti -shear and ductility performance. The specimen size, loading mode and measuring instruments are presented, the influential factors on anti-shear and ductility performance were studied.