TBM液压管道防共振结构设计流程  

Research on Anti-resonance Structural Design Process for TBM Hydraulic Pipe

作　　者：李强[1,2] 彭欢[2] 齐征宇 

机构地区：[1]湖南工业职业技术学院机械工程系,长沙410208 [2]中南大学机电工程学院,长沙410083

出　　处：《机械设计与研究》2015年第1期106-110,共5页Machine Design And Research

基　　金：国家重点基础研究发展计划资助项目(2013CB035402);湖南省科技计划资助项目(2102GK3094);湖南省教育厅科学研究项目优秀青年专项(14B052)

摘　　要：针对TBM掘进过程中液压管道在强振动环境下发生共振,导致管道振动加剧的问题,建立了基础振动下两端固支输流管道流固耦合数学模型,运用Galerkin方法和Matlab工具对其进行了求解,且对其结果进行了实验验证,得到了管道发生共振的临界固支间距,并分析了基础振动和结构参数对临界固支间距的影响,进而制定了避免管道发生共振的结构设计流程。结果表明:管道发生共振的临界固支间距随基础振动频率的增大而减小;管道内径每增加5 mm,临界固支间距的上界增大0.26 m;管道厚度为3 mm时,厚度每增加1 mm,上界增大2.87%。Aimed at the problem that the TBM hydraulic pipe under the environment of strong vibration during its tunneling process severely vibrates because of the pipe resonance, and the liquid-solid coupling mathematical model of the clamped hydraulic pipe under the foundation vibration is built. The Galerkin method and Matlab tool are utilized to solve the equation, and the correctness of the result is experimentally verified. Meanwhile, the critical clamped span that will result pipe resonance is studied, and the influence of the foundation vibration and structural parameters on the critical clamped span are analyzed. Taking the foundation vibration into account, the structural design process of preventing pipe resonance is put forward. The result indicates that the critical clamped span decreases as the increasing of the frequency of foundation vibration ; when the pipe inner diameter increases by 5 mm, the upper limit of the critical clamped span increases 0.26 m ; and when the pipe thickness is 3 ram, the upper limit of the critical clamped span increases by 2.87% as the thickness increases 1 ram.

关 键 词：基础振动 输流管道 防共振 流固耦合 结构设计流程 

分 类 号：TH113.3[机械工程—机械设计及理论]