On the Loads for Strength Design of Cutterhead of Full Face Rock Tunnel Boring Machine

作     者：Meidong Han Zongxi Cai Chuanyong Qu 

作者机构：School of Aircraft EngineeringNanchang Hangkong UniversityNanchang 330063China School of Mechanical EngineeringTianjin UniversityTianjin 300350China 

基　　金：Supported by National Basic Research Program of China(973 Program,Grant No.2013CB035042) the National Natural Science Foundation of China(Grant No.11672202) 

出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)

年 卷 期：2019年第32卷第6期

页      码：60-71页

摘      要：Cutterhead loads are the key mechanical parameters for the strength design of the full face hard rock tunnel boring machine(TBM).Due to the brittle rock-breaking mechanism,the excavation loads acting on cutters fluctuate strongly and show some *** conventional method that using combinations of some special static loads to perform the strength design of TBM cutterhead may lead to strength failure during working *** this paper,a three-dimensional finite element model for coupled Cutterhead–Rock is developed to determine the cutterhead *** the distribution characteristics and the influence factors of cutterhead loads are analyzed based on the numerical *** is found that,as time changes,the normal and tangential forces acting on cutters and the total torque acting on the cutterhead approximately distribute log normally,while the total thrusts acting on the cutterhead approximately show a normal ***,the statistical average values of cutterhead loads are proportional to the uniaxial compressive strength(UCS)of cutting *** values also change with the penetration and the diameter of cutterhead following a power *** on these findings,we propose a three-parameter model for the mean of cutterhead loads and a method of generating the random cutter *** the strength properties of a typical cutterhead are analyzed in detail using loads generated by the new *** optimized cutterhead has been successfully applied in *** method in this paper may provide a useful reference for the strength design of TBM cutterhead.

主 题 词：TBM cutterhead Strength design Numerical simulation Three-parameter model Random cutter forces 

学科分类：081406[081406] 08[工学] 0814[工学-地质类] 082301[082301] 0823[工学-农业工程类] 

核心收录：

D　O　I：10.1186/s10033-019-0411-1

馆 藏 号：203878735...