新型可更换预埋槽道的结构优化

Structural Optimization of New Replaceable Pre-embedded Channel

为了解决地铁盾构隧道轨旁设备专用可更换预埋槽道的若干技术关键问题,设计一种新型可更换预埋槽道;采用理论计算与有限元分析相结合的手段,设计一种新型可更换预埋槽道结构形式,并对新型可更换预埋槽道的结构优化方案进行设计及有限元分析,确定预埋锚杆的结构和尺寸以及锁紧螺杆、 T型螺栓的型号和规格。结果表明:结构优化方案1的翼缘直径、厚度分别为38、 9 mm,预埋锚杆直径为20 mm,总高度为99 mm,锁紧螺杆规格为M12×60, T型螺栓型号为M12;结构优化方案2的翼缘直径、厚度分别为48、 10 mm,预埋锚杆直径为24 mm,总高度为100 mm,锁紧螺杆规格为M14×60, T型螺栓型号为M14。

To solve some key technical problems of replaceable pre-embedded channel specially used for rail-side equipment of metro shield tunnels, a new type of replaceable pre-embedded channel was designed. By means of theoretical calculation and finite element analysis, a new type of replaceable pre-embedded channel structure was designed, and the structural optimization scheme of the new type of replaceable pre-embedded channel was designed and analyzed by finite element method. The structure and measurement of pre-embedded rock bolt, as well as the model and specification of locking screw and T-type bolt were determined. The results show that the flange diameter and thickness of structural optimization scheme 1 are 38 mm and 9 mm respectively, the diameter of pre-embedded rock bolt is 20 mm, the total height is 99 mm, the specification locking screw is M12×60, and the model of T-type bolt is M12. The flange diameter and thickness of the structural optimization scheme 2 are 48 mm and 10 mm respectively, the diameter of pre-embedded rock bolt is 24 mm, the total height is 100 mm, the specification of locking screw is M14×60, and the model of T-type bolt is M14.