Dynamic analysis of cutting RC structure with shield disc-cutter: Insights from the coupled simulation and laboratory test verification

IF 4.4 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis Pub Date : 2024-11-23 DOI:10.1016/j.engfailanal.2024.109112

Yidong Guo , Dalong Jin , Dajun Yuan , Zheng Mou

{"title":"Dynamic analysis of cutting RC structure with shield disc-cutter: Insights from the coupled simulation and laboratory test verification","authors":"Yidong Guo , Dalong Jin , Dajun Yuan , Zheng Mou","doi":"10.1016/j.engfailanal.2024.109112","DOIUrl":null,"url":null,"abstract":"<div><div>During shield tunneling in densely populated urban areas, shield machines may unexpectedly encounter obstacles such as reinforced concrete (RC) structure. Cutting through RC structure with a shield machine presents significant challenges due to potential cutter damage and reduced cutting efficiency. In this study, dynamic analyses of cutting RC structure via disc-cutter were performed based on the finite element method-discrete element method (FEM-DEM) coupled approach. In FEM-DEM coupled model, the mechanical behaviour of concrete is represented using DEM, while the influence of the rebar in the concrete is accounted for through FEM. And the precision and dependability of the simulation results were validated through the laboratory experiments. Overall, the numerical outcomes agreed well with the experimental data. Furthermore, a parametric study was conducted, and the effects of the shield working parameters and the geometric configurations of disc-cutter on the cutting performance of the disc-cutter were investigated, respectively. Through the parametric analysis, it is recommended that the shield machine adopts a tunneling pattern with low penetration and medium rotational speed in actual project when cutting the RC structure. The findings of this study may serve as valuable references for cutting RC obstacles with disc-cutters in future applications.</div></div>","PeriodicalId":11677,"journal":{"name":"Engineering Failure Analysis","volume":"168 ","pages":"Article 109112"},"PeriodicalIF":4.4000,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Engineering Failure Analysis","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1350630724011580","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}

引用次数: 0

Abstract

During shield tunneling in densely populated urban areas, shield machines may unexpectedly encounter obstacles such as reinforced concrete (RC) structure. Cutting through RC structure with a shield machine presents significant challenges due to potential cutter damage and reduced cutting efficiency. In this study, dynamic analyses of cutting RC structure via disc-cutter were performed based on the finite element method-discrete element method (FEM-DEM) coupled approach. In FEM-DEM coupled model, the mechanical behaviour of concrete is represented using DEM, while the influence of the rebar in the concrete is accounted for through FEM. And the precision and dependability of the simulation results were validated through the laboratory experiments. Overall, the numerical outcomes agreed well with the experimental data. Furthermore, a parametric study was conducted, and the effects of the shield working parameters and the geometric configurations of disc-cutter on the cutting performance of the disc-cutter were investigated, respectively. Through the parametric analysis, it is recommended that the shield machine adopts a tunneling pattern with low penetration and medium rotational speed in actual project when cutting the RC structure. The findings of this study may serve as valuable references for cutting RC obstacles with disc-cutters in future applications.

查看原文本刊更多论文

使用盾构圆盘切割机切割 RC 结构的动态分析：耦合模拟和实验室测试验证的启示

在人口稠密的城市地区进行盾构掘进时，盾构机可能会意外地遇到钢筋混凝土（RC）结构等障碍物。由于潜在的刀盘损坏和切割效率降低，使用盾构机切割 RC 结构面临巨大挑战。本研究基于有限元法-离散元法（FEM-DEM）耦合方法，对通过圆盘切割机切割 RC 结构进行了动态分析。在 FEM-DEM 耦合模型中，使用 DEM 表示混凝土的力学行为，同时通过 FEM 考虑混凝土中钢筋的影响。模拟结果的精确性和可靠性通过实验室实验得到了验证。总体而言，数值结果与实验数据非常吻合。此外，还进行了参数研究，分别研究了盾构工作参数和圆盘切削机几何配置对圆盘切削机切削性能的影响。通过参数分析，建议盾构机在实际工程中切割 RC 结构时采用低穿透、中转速的掘进模式。本研究的结果可为今后使用圆盘切割机切割 RC 障碍物提供有价值的参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Engineering Failure Analysis 工程技术-材料科学：表征与测试

CiteScore

7.70

自引率

20.00%

发文量

956

审稿时长

47 days

期刊介绍： Engineering Failure Analysis publishes research papers describing the analysis of engineering failures and related studies. Papers relating to the structure, properties and behaviour of engineering materials are encouraged, particularly those which also involve the detailed application of materials parameters to problems in engineering structures, components and design. In addition to the area of materials engineering, the interacting fields of mechanical, manufacturing, aeronautical, civil, chemical, corrosion and design engineering are considered relevant. Activity should be directed at analysing engineering failures and carrying out research to help reduce the incidences of failures and to extend the operating horizons of engineering materials. Emphasis is placed on the mechanical properties of materials and their behaviour when influenced by structure, process and environment. Metallic, polymeric, ceramic and natural materials are all included and the application of these materials to real engineering situations should be emphasised. The use of a case-study based approach is also encouraged. Engineering Failure Analysis provides essential reference material and critical feedback into the design process thereby contributing to the prevention of engineering failures in the future. All submissions will be subject to peer review from leading experts in the field.