基于光滑粒子流方法的全断面岩石掘进机盘形滚刀侧向力研究  

Research on side force of tunnel boring machine disc cutter based on smoothed particle hydrodynamics

作　　者：赵晓旭 贾春强 孙佳 侯祥林 ZHAO Xiaoxu;JIA Chunqiang;SUN Jia;HOU Xianglin(School of Mechanical Engineering,Shenyang Jianzhu University,Shenyang 110168,Liaoning,China)

机构地区：[1]沈阳建筑大学机械工程学院,辽宁沈阳110168

出　　处：《中国工程机械学报》2021年第1期25-31,共7页Chinese Journal of Construction Machinery

基　　金：住房和城乡建设部科学技术资助项目(2015-K3-006)。

摘　　要：侧向力对全断面岩石掘进机(TBM)盘形滚刀和刀盘设计具有重要影响。根据盘形滚刀空间运动规律,利用D-H矩阵法分析滚刀侧向受力的运动学原因,基于岩石断裂力学理论,采用光滑粒子流(SPH)方法和有限元方法混合建模,模拟盘形滚刀动态破岩过程,得到滚刀侧向力。利用试验和美国科罗拉多矿业学院的预测模型(CSM),验证数值模型的准确性和可行性。通过仿真得到不同刀位安装半径的侧向力分布规律,进而分析了刀间距及滚刀加载次序对侧向力的影响。结果表明:内侧滚刀先行破岩时侧向受力较小,可为TBM滚刀设计、刀盘优化布局和实际施工提供理论参考。The side force is an important parameter for disc cutter and cutterhead design of tunnel boring machine(TBM).According to the principle of space kinematics,the mathematical model of side displacement of rock breaking point was built by Denavit-Hartenberg(D-H)method.Then,with the rock fracture mechanics theory,a composite model based on smooth particle hydrodynamics(SPH)and the finite element method was carried out in order to model and simulate the rock breaking process of disc cutter.The accuracy and feasibility of the numerical model were verified by linear cutting machine(LCM)test data and a predictive model from the Colorado School of Mines(CSM).After the simulation,the distribution of side force on disc cutter with different tool installation radius is obtained,and the influence of different cutter spacing and the different loading modes on the side force is analyzed.The results show that the side force is smaller when the inner disc cutter is loaded first.This provides a theoretical reference for the cutter design,cutterhead’layout optimization and the practical construction of the TBM.

关 键 词：全断面岩石掘进机 盘形滚刀 侧向力 光滑粒子流方法 数值模拟 

分 类 号：TH122[机械工程—机械设计及理论]