钢结构用国产自锁式8.8级单向螺栓承载性能
Bearing Performance of Domestic Class 8.8 Self-lock One-side Bolt for Steel Structure

研制开发出钢结构用国产自锁式8.8级单向螺栓STUCK-BOM，并针对6种不同型号的8.8级单向螺栓进行了单个螺栓的轴向拉伸和剪切的静力试验，每个螺栓均进行了多种钢板厚度的试验。通过试验得到了国产自锁式8.8级单向螺栓在轴向拉力和剪力作用下的荷载-位移曲线，由此获取了单个单向螺栓抗拉极限承载力、抗剪极限承载力及初始刚度等力学性能指标。结果表明：除了用于连接钢板较薄的情况，国产自锁式8.8级单向螺栓的抗拉承载力和同等级承压型高强螺栓相同，抗剪承载力优于同等级承压型高强螺栓，满足工程应用的需求，为钢结构用国产自锁式8.8级单向螺栓的工程应用提供基础数据和依据。
The domestic class 8.8 self-lock one-side bolt STUCK-BOM was developed. The axial tensile and shear static tests of single bolt for 6 different types of class 8.8 self-lock one-side bolts with varied steel plate thicknesses were carried out. The load-displacement curves of domestic class 8.8 self-lock one-side bolt under axial tension and shear force were obtained through experiments. The mechanical properties, such as ultimate tension bearing capacity, ultimate shear bearing capacity and initial stiffness of single one-side bolt were obtained. The results show that except for the thinner connection steel plate, the tension bearing capacity of one-side bolt is equal to the same grade high-strength bolt and the shear bearing capacity is better. The one-side bolt can meet the requirements of engineering application. The research can provide basic data and basis for the engineering application of domestic class 8.8 self-lock one-side bolt for steel structure