Until now , the domestic and overseas scholar has studied the factors that have effect on performance of steel fiber reinforced concrete corbel such as shear span to depth , strength of concrete , reinforcement ratio ( including longitudinal reinforcement and stirrup ) and ratio of horizontal to vertical load . for calculating the cracking load , and ultimate load domestic and foreign scholar has brought forward a series of calculative formulas and methods have been put forward that based on statistical analysis , flexural model and truss model 到目前为止，国内外学者已研究了剪跨比、混凝土强度、配筋率(包括纵向钢筋和箍筋) 、水平荷载与垂直荷载之比等因素对钢筋钢纤维混凝土牛腿受力性能的影响，对牛腿的抗裂计算和承载力的计算，国内外学者曾提出了基于数理统计分析、弯压模型和桁架模型等的一系列计算方法和计算公式。
When the axial compression ratio increases more than 0 . 42 , the variation of the displacement ductility ratios is small ; when the stirrup ratio per unit volume increases more than 1 . 9 % , the displacement ductility increases slowly ; with increasing the shear span ratio a , the displacement ductility increases for , < 1 . 5 , decreases for > 1 . 5 当轴压力系数增加到0 . 42以后，位移延性的变化较小；体积配箍率增加到1 . 9 %后，位移延性的增长减缓；当剪跨比小于1 . 5时，型钢混凝土柱的延性系数随剪跨比的增加而提高；但当剪跨比大于1 . 5时，随着剪跨比的增加，型钢混凝土柱位移延性系数有所降低。
5 results of an experimental investigation on shear behavior of l , t and + - shaped columns are presented . the effects of shear - span ratio , axial compression ratio , stirrup contents and loading direction on shear behaviors of l , t , and + - shaped columns are discussed . combining with test data of others , the formulas for shear strength of l and + - shaped columns are given 5对l 、 t 、十形柱受剪性能进行了低周反复荷载试验研究，讨论了剪跨比、轴压比、配箍率、荷载作用方向对l 、 t 、十形柱承载力和延性的影响，并结合他人试验结果，提出了l 、十形柱的偏下线受剪承载力公式。
A simplified formula for the shear capacity of rc simply supported beam which strengthened with the cmmr is proposed in this paper . 3 、 the shear capacity of rc beam strengthened with cmmr is studied . though the test of fourteen simply supported reinforced concrete beams and five overhanging reinforced concrete beams with cmmr , it analyses the effects of shear - span ratio , web reinforcement ratio of cmmr , style of loading , preloading on strengthening , and compares them with rc beams using ordinary stirrup 3 、根据本文进行了的14根混凝土简支梁和5根混凝土伸臂梁的水泥复合砂浆钢筋网抗剪加固试验,分析了剪跨比、钢筋网配筋率、加固形式以及持荷状态等因数对整个构件极限抗剪承载力的影响,并与混凝土梁进行了比较。
First , it studies the static experimental study on hollow shear walls of reinforced concrete . its aim is to know hollow shear - walls " performance whose ratio of shear span to effective depth of section is between 1 with 2 , based on the studies of ones whose ratio of shear span to effective depth of section is between less than 1 . by low - cycle and reverse horizontal loading test , their properties , including with strength property , deformation property and energy property , are studied 本课题的试验目的是在先前所做的剪跨比小于1的低矮钢筋混凝土空心剪力墙的基础上，对剪跨比大于1且小于2的中高空心剪力墙有一系统的认识和了解，通过试验掌握中高空心剪力墙在低周反复水平荷载作用下的强度、变形、能量方面的特征。
