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本文通过对一些约束梁、约束柱及连续梁抗剪试验资料的分析研究，采用斜压场模型模拟有反弯点的剪跨区段当斜裂缝出现后剪力作用下的受力状态，并考虑剪跨比的影响及纵筋的暗销作用，导出了剪力、剪切变形、轴力之间的关系。用此模型对不同条件的５８根剪切破坏的约束梁、柱进行了计算比较。同时，将模型引入框架非线性分析中的单元刚度矩阵及固端力列阵，编写了框架非线性全过程分析程序，对一定数量发生弯曲剪切破坏的两跨连续梁进行了计算比较，计算结果与实测结果符合较好。本文进行了三榀门式框架及二根两跨连续梁的试验，用上述程序进行了框架、连续梁考虑斜裂缝对内力重分布及构件变形影响的比较分析。
This paper analyzes the shear test data of some constrained beams, constrained columns and continuous beams, and uses the oblique pressure field model to simulate the force state under the effect of shear force when oblique cracks appear in shear spans with anti-bending points. Taking into account the influence of the shear span ratio and the stud effect of longitudinal reinforcement, the relationship between shear force, shear deformation and axial force was derived. This model was used to calculate and compare the 58 beams with shear failure under different conditions. At the same time, the model was introduced into the element stiffness matrix and the fixed-end force array in the nonlinear analysis of the frame. The nonlinear full-process analysis program for the frame was programmed to calculate and compare the two-span continuous beams subjected to bending shear failure. The results are in good agreement with the measured results. In this paper, three portal frames and two two-span continuous beams were tested. The above-mentioned procedure was used to compare the influence of oblique cracks on internal force redistribution and component deformation.