Abstract: Accurately assessing the cutter load during the process of shield tunneling cutter cutting reinforced concrete is crucial for controlling structural deformation, adjusting excavation parameters, and optimizing cutter design. Currently, there is no systematic theoretical model to guide the cutting of reinforced concrete by disc cutters, and the actual construction performance is mainly evaluated through indirect feedback of construction parameters. To address this, this study establishes a dynamic load model for disc cutters cutting reinforced concrete by integrating rock-breaking load theory and the failure characteristics of projectile erosion into reinforced concrete materials. A calculation method for the cutter load under dynamic cutting conditions is proposed, and its feasibility is discussed based on previous experimental- 引用格式:张玲,彭芯钰,章瑞环,等.基于Winkler地基梁理论的拼宽公路新老路基差异沉降分析［J］.河北大学学报(自然科学版),2026,46(1):1-12.引用格式:彭凯西,王占生,程诚,等.盾构滚刀切削钢筋混凝土刀具荷载理论模型［J］.河北大学学报(自然科学版),2026,46(1):22-33.DOI:10.3969/j.issn.1000-1565.2026.01.003盾构滚刀切削钢筋混凝土刀具荷载理论模型彭凯西¹,王占生²,程诚¹,史培新¹(1.苏州大学 轨道交通学院,江苏 苏州 215137;2.苏州轨道交通建设有限公司,江苏 苏州 215005)摘 要:在盾构滚刀切削钢筋混凝土的过程中,准确评估刀具荷载对于控制结构变形、优化掘进参数以及改进刀具结构具有重要意义.目前,针对滚刀切削钢筋混凝土的研究尚未形成系统性的理论指导模型,实际施工效果主要依赖施工参数的间接反馈进行评估.本文结合滚刀破岩荷载理论和弹体侵蚀钢筋混凝土材料的破坏特性,建立滚刀切削钢筋混凝土的动态荷载模型,并提出了动态切削作用下的滚刀刀具荷载计算方法.同时,结合前期实验结果探讨了计算方法的可行性.研究结果表明:在一个完整的切削周期内,滚刀的垂直力先增大至峰值,然后逐渐降低;当切削较小直径钢筋时,滚刀切削过程更稳定,且垂直力峰值更小;此外,靠近中心的滚刀荷载比边缘滚刀更稳定.本文所建立的滚刀切削钢筋混凝土动态荷载理论模型得到的计算结果与实验结果吻合较好,垂直力峰值误差约为10%,验证了该模型的准确性.关键词:隧道工程;盾构切墙;理论模型;空腔膨胀理论;滚刀荷载中图分类号:U455 文献标志码:A 文章编号:1000-1565(2026)01-0022-12DOI:10.3969/j.issn.1000-1565.2026.01.003Theoretical model of load on cutter blade of shield tunneling cutter cutting reinforced concretePENG Kaixi¹, WANG Zhansheng², CHENG Cheng¹, SHI Peixin¹(1.School of Rail Transit, Soochow University, Suzhou 215137, China; 2. Suzhou Rail Transit Construction Co., Ltd.,Suzhou 215005, China)Abstract: Accurately assessing the cutter load during the process of shield tunneling cutter cutting reinforced concrete is crucial for controlling structural deformation, adjusting excavation parameters, and optimizing cutter design. Currently, there is no systematic theoretical model to guide the cutting of reinforced concrete by disc cutters, and the actual construction performance is mainly evaluated through indirect feedback of construction parameters. To address this, this study establishes a dynamic load model for disc cutters cutting reinforced concrete by integrating rock-breaking load theory and the failure characteristics of projectile erosion into reinforced concrete materials. A calculation method for the cutter load under dynamic cutting conditions is proposed, and its feasibility is discussed based on previous experimental- 收稿日期:2024-12-09;修回日期:2025-11-13 基金项目:江苏省基础研究计划自然科学基金项目(BK20230500) 第一作者:彭凯西(1999—),男,苏州大学在读硕士研究生,主要从事道路与铁道工程方向研究.E-mail:1819105424@qq.com 通信作者:程诚(1992—),男,苏州大学副研究员,博士,主要从事隧道工程和岩土工程方向研究. E-mail:chengcheng018@suda.edu.cn 第1期彭凯西等:盾构滚刀切削钢筋混凝土刀具荷载理论模型河北大学学报(自然科学版) 第46卷results. The findings show that the vertical force of the disc cutter first increases to a peak and then gradually decreases within a complete cutting cycle. When cutting smaller-diameter steel bars, the disc cutter operates more stably, and the peak vertical force is smaller. Disc cutters closer to the center experience more stable loads compared to those at the edge. The calculated results obtained from the proposed theoretical model are consistent with experimental values, with a peak vertical force error of around 10%, validating the accuracy of the model.

Key words: tunnel engineering, shield machine cutting wall, theoretical model, cavity expansion theory, cutter load