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首页> 外文期刊>Arabian Journal for Science and Engineering >Deformation Behavior of Shield Segment Joint Controlled by Bolt and Positioning Tenon
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Deformation Behavior of Shield Segment Joint Controlled by Bolt and Positioning Tenon

机译：螺栓和定位榫控制屏蔽段关节的变形行为

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摘要

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.
机译：屏蔽段接头的变形故障可能导致严重泄漏，因此必须预先加强接头以控制其变形。螺栓和定位榫的组合，作为一种新型的加固，可以快速控制屏蔽段关节的变形。进行数值模拟以分析螺栓应力，螺栓槽应力和分段位移在预加载螺栓的垂直载量下的变形的变形特性。结果表明，在垂直外力下抵抗段位移变形的最重要因素是螺栓预载。更大的螺栓预加载导致区段之间的摩擦阻力较大，抗段位移变形的耐抗性更大。定位榫可以有效地降低屏蔽段之间的位移，并且平均位移可以减小到大约60％。通过螺栓和榫屏幕接头的变形力学行为的控制为实际工程提供了理论参考。

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