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根据25根预应力钢纤维混凝土无腹筋梁和 25根预应力钢纤维混凝土配箍筋梁的试验结果,分析 了预应力、剪跨比、钢纤维含量特征值及配箍特征值等变化对预应力钢纤维混凝土梁斜截面破坏形态和斜截面 承载力的影响规律,提出了预应力钢纤维混凝土无腹筋梁和预应力钢纤维混凝土配箍筋梁的斜截面承载力计算 方法。该成果可作为《钢纤维混凝土结构设计与施工规程》增订相应条款的研究基础,并可供实际工程设计应 用参考。
Based on the test results of 25 prestressed steel fiber reinforced concrete beams without web reinforcement and 25 prestressed steel fiber reinforced concrete beams with stirrups, the prestress, shear-span ratio, characteristic values of steel fiber content, and the characteristic value of the hoop were analyzed. In order to study the influence of oblique section failure and inclined section bearing capacity of steel fiber reinforced concrete beams with stress, the calculation method of the oblique section bearing capacity of prestressed steel fiber reinforced concrete without web reinforcement and prestressed steel fiber concrete with stirrup beams was proposed. This achievement can serve as the basis for the study of the corresponding provisions of the “Steel Fiber Reinforced Concrete Structure Design and Construction Regulations” and can be used as a reference for practical engineering design applications.