The deformation failure of a shield segment joint can lead to serious leakage, and the joint must therefore be reinforced in advance to control its deformation. The combination of a bolt and positioning tenon, as a new type of reinforcement, can quickly control the deformation of shield segment joints. Numerical simulation is conducted to analyze the variation characteristics of bolt stress, bolt groove stress, and deformation of segment displacement under the vertical load of a preloading bolt. Results indicate that the most important factor in resisting the deformation of segment displacement under a vertical external force is bolt preloading. Greater bolt preloading leads to greater friction resistance between segments and stronger resistance against segment displacement deformation. The positioning tenon can effectively reduce the displacement between shield segments, and the average displacement can be reduced to approximately 60%. The control of the deformation mechanical behavior of shield segment joints by a bolt and tenon provides a theoretical reference for practical engineering.

盾构节段接头变形失效会导致严重渗漏，因此必须提前对接头进行加固以控制其变形。螺栓与定位榫的结合，作为一种新型的钢筋，可以快速控制盾构节段的变形。数值模拟分析了预紧螺栓竖向载荷作用下螺栓应力、螺栓槽应力和管片位移变形的变化特征。结果表明，在垂直外力作用下抵抗管片位移变形的最重要因素是螺栓预紧力。螺栓预紧力越大，节段之间的摩擦阻力越大，节段位移变形的阻力也越大。定位榫可有效减少屏蔽段之间的位移，平均位移可降低到60%左右。螺栓和榫头对盾构节段接头变形力学行为的控制为实际工程提供了理论参考。