为研究型钢混凝土T形柱负弯矩区的抗剪性能,设计4个T形试件进行静力单调加载试验,主要考虑剪跨比、配钢形式、配箍率、截面形式4个变化参数,试验过程中捕捉到混凝土应变、型钢应变、角钢应变、跨中挠度等一系列重要数据,并绘制出剪力-挠度,荷载-应变等重要关系曲线,给出混凝土截面应变的分布情况,采用能量等值法分析试件的剪切延性,探讨设计参数对抗剪承载力的影响,给出型钢混凝土T形柱斜截面承载力的计算公式。试验研究和理论分析结果表明:型钢混凝土T形柱的破坏形态有弯剪破坏、剪切粘结破坏,混凝土平均应变沿截面高度分布符合平截面假定;基于叠加法得到的受剪承载力计算公式可以用于计算型钢混凝土T形柱的斜截面剪切强度。 In order to study the shear resistance of the T-shaped column in the negative moment region, four T-shaped specimens were designed to carry out static monotonic loading tests. The main factors of shear span ratio, steel distribution, stirrup ratio and cross-section During the test, a series of important data such as concrete strain, steel strain, angle strain and mid-span deflection were captured and the shear stress-deflection, load-strain and other important curves were plotted. The energy ductility method is used to analyze the shear ductility of the specimen. The influence of design parameters on the shear capacity is discussed. The formula for calculating the bearing capacity of the T-shaped section of SRC columns is given. Experimental results and theoretical analysis show that the failure forms of T-shaped steel columns include bending shear failure, shear bond failure, and the average strain along the cross-section height distribution conforms to the assumption of flat section. Based on the formula of shear strength It can be used to calculate the oblique shear strength of T-shaped steel columns.