摘要
针对全断面岩石隧道掘进机(Tunnel boring machine,TBM)在施工作业过程中掘进轨迹经常偏离预设轨迹、严重影响掘进精度及效率的问题,研究其支撑-推进-换步机构刚度半解析建模方法。从分析机构的变形协调条件入手,构造出计及所有支链构件及末端自身弹性贡献的半解析静刚度模型,该模型综合考虑了复杂物理边条(围岩)、机械系统刚度及液压系统刚度。通过算例揭示整机静刚度在掘进全域随位姿的变化规律,并借助有限元分析软件验证了所建模型的正确性。
To solve the problem that trajectories often deviate from the default trajectory in the construction process of tunnel boring machine(TBM), which seriously affects the accuracy and efficiency of tunneling, a semi-analytical stiffness model of the gripping-thrusting-regripping mechanism is formulated by analyzing the deformation compatibility conditions. This stiffness model accounts for the compliances of all limb components and moving platform, and considers the complex physical boundary condition(surrounding rock) and mechanical system stiffness and rigidity of the hydraulic system. The computational results are validated by finite element software.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2018年第1期56-65,共10页
Journal of Mechanical Engineering
基金
国家重点基础研究计划(973计划,2013CB035403)
国家高技术研究发展计划(863计划,2012AA041803)资助项目
