通过轴向拉伸试验,给出了截面为10cm×4cm的砼轴向拉伸应力～应变全曲线。全部试验在自行设计、加工组装的刚性辅助加载装置上进行,该刚性加载辅助装置与普通压力试验机配套使用。采用峰点卸荷的方法,成功地测定了试件截面为10cm×4cm的砼断裂能。避免了砼轴向拉伸试件无法预先确定断裂位置的困难。 Through the axial tensile test, a complete tensile stress-strain curve of the crucible in the cross-section of 10 cm×4 cm is given. All tests were carried out on a self-designed, machined and assembled rigid auxiliary loading device, which is used in conjunction with an ordinary pressure testing machine. Using the method of unloading at the peak point, the fracture energy of the specimen with a section of 10cm×4cm was successfully measured. The difficulty of pre-determining the fracture position of the 砼 axially-stretched specimen is avoided.