船舶常用螺栓预紧力和拧紧力矩的确定

Determination of Pre-tightening Force and Tightening Torque of Common Marine Bolts

基于轴向载荷典型螺栓的受力分析,综合考虑各种影响因素,推导螺栓预紧力和拧紧力矩的计算公式,结合生产实际,有针对性地选取各因素系数,得出简化公式,对比国标和其他设备公司标准,确定该简化公式可行,根据公式编制对应的预紧力和拧紧力矩表,以便设计时选用。

The calculation formulas of the pre-tightening force and tightening torque of the bolts were deduced by analyzing the forces acting on the typical bolts under axial loads and various influencing factors. Asimplified formula was gottenby selecting the coefficients of each factor according to the actual situation of the shipyard. The feasibility of this simplified formula was analyzed by comparing with the national standard and the standard of other equipment companies. The corresponding pre-tightening force and tightening torque table was made,which can be easily used to choose in the design.