盾構機刀盤高強度螺栓預緊力不足對螺釘影響的仿真分析研究

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摘 要:針對盾構機中常用的高強度緊固螺栓預緊力展開相關研究,介紹了螺紋緊固件扭緊力矩與預緊力之間的關系,以及螺紋緊固件的常用預緊力控制方法,并針對盾構機刀盤噴口的螺紋緊固進行了有限元仿真分析,得出了螺栓預緊力不足對螺栓工作載荷的影響。
關鍵詞:盾構機;高強度螺栓;有限元仿真
Simulation Study on the Influence of
Insufficient Preload on High Strength Bolt of Cutter Head of Shield Machine
Du Guozheng1 Lu Qingliang1 Xu Jingwei1 Du Jiyong1 Jia Yan1 Deng Xiaojie2
1.Jinan Heavy Industry Co.,Ltd.Intelligent Tunneling Technology Equipment and Research Institute
ShandongJi’nan 250109;
2.Jinan Rail Transit Group Construction Investment Co.,Ltd. ShandongJi’nan 250000
Abstract:The preload of highstrength fastening bolts commonly used in rectangular shield machine was studied,The relationship between the tightening torque and preload of threaded fasteners was introduced,as well as the common preload control method of threaded fasteners.The finite element simulation analysis was carried out for the bolt fastening of the cutter head nozzle of rectangular shield machine,and the influence of insufficient preload of bolt on the working load of bolt was obtained.
Keywords:Shield machine;Highstrength bolt;Finite element simulation
1 概述
非開挖技術在市政給、排水管道、排污管道、電力、石油化工管道、水利管道等領域都有用武之地,它利用先進的巖土鉆掘技術,不必開挖地面就能高效、環(huán)保地鋪設地下管道。(剩余3067字)