摘要
盾构机因其开挖效率高、安全环保等优点,已被广泛用于隧道施工。准确计算盾构机扭矩是降低设备成本、保证施工顺利进行的重要保证之一。本文针对目前盾构机刀盘扭矩计算精度较低的问题,分析总结了现有刀盘扭矩计算方法,针对其中刀盘扭矩主要分量——正面摩擦扭矩,提出考虑刀盘实际形状与土压分布的精确积分计算公式,采用图像处理的方式将上述积分公式离散为易于计算的求和公式,并用多种形状刀盘对所提方法进行验证。计算结果证明:采用图像处理的方式可以更为精确与快速的计算出摩擦扭矩,可以替代近似计算方法;32%开口率下不同形状刀盘正面摩擦扭矩最大值可达最小值的1.49倍,实际形状是正面摩擦扭矩计算的关键影响因素,不能忽略。
Shield machine has been widely used in tunnel construction because of its high excavation efficiency,safety and environmental protection.Accurate calculation of shield machine torque is one of the important guarantees to ensure smooth construction and reduce equipment costs.In view of the low calculation accuracy of the current cutter head cutter torque,this paper first analyzes the problems of the existing cutter disc torque calculation method.Secondly,to one of the most critical components,the right side of the friction torque,a calculation formula considering the actual shape of the cutter head and the soil pressure distribution is proposed and then the integral formula is discretized into the sum formula which is easy to calculate by using the image processing method.Finally,the friction torque on the front of the cutter head with different shapes is calculated by using the proposed method.The results show that the image processing method can calculate the friction torque more accurately and quickly,and can replace the approximate calculation method.Under the condition of 32%opening rate,the maximum value of front friction torque of cutter head of different shapes can reach 1.49 times of the minimum value.The actual shape is the key influencing factor of front friction torque calculation,which cannot be ignored.
作者
黄圣
杨泰春
陶建峰
Huang Sheng;Yang Taichun;Tao Jianfeng(Shanghai Tunnel Engineering Co.,Ltd.,Shanghai 200235,P.R.China;School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,P.R.China)
出处
《地下空间与工程学报》
CSCD
北大核心
2020年第S02期710-714,共5页
Chinese Journal of Underground Space and Engineering
基金
上海市2018年度“科技创新行动计划”(18DZ1205500)
关键词
盾构机
刀盘扭矩
摩擦力矩
图像处理
shield machine
cutter head torque
friction torque
image processing
