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Integrated BIM-based modeling and simulation of segmental tunnel lining by means of isogeometric analysis
Finite Elements in Analysis and Design ( IF 3.5 ) Pub Date : 2023-11-03 , DOI: 10.1016/j.finel.2023.104070
Hoang-Giang Bui , Jelena Ninić , Christian Koch , Klaus Hackl , Günther Meschke

With the increasing demand for underground transport infrastructures in urban areas, and associated hazards during the construction of these complex structures characterized with a number of uncertainties, there is an acute need for the development of methods and tools that enable efficient and accurate exploration of the design options to minimize risks induced to the environment. Mechanized tunneling, although it requires high initial investments compared to other tunneling methods, offers a safe and productive way to construct urban tunnels. In the mechanized tunneling process, the lining plays a critical role to provide the support for internal structures, i.e roads, facilities. At the same time, it helps stabilize the ground condition. Together with the jacking system, the lining provides the mean to thrust the tunnel shield (TBM) during excavation. In this work, we address the problem of effective modeling and simulation of the tunnel lining segment. The objective is to demonstrate a systematic and versatile approach to analyze the tunnel lining in different practical scenarios. In terms of modeling, a BIM-based approach is used, which connects the user-friendly software interface used in daily engineering practice with effective simulation tools. The proposed approach utilizes high-order definition of geometry in the design model as well as parametric model definitions to reconstruct the corresponding high-order numerical models. This results in a high-accuracy and computationally low-cost model to analyze a complex structure including an interaction with the soil based on a nonlinear surface springs model. In addition, it allows to analyze the stress and bending moment in the lining segment with high accuracy. The numerical results show that negligible modeling efforts and a reduced computational time up to ten times for given accuracy are achieved.



中文翻译:

通过等几何分析对管片隧道衬砌进行基于 BIM 的集成建模和仿真

随着城市地区地下交通基础设施的需求不断增加,以及这些具有许多不确定性的复杂结构施工过程中的相关危险,迫切需要开发能够高效、准确地探索设计的方法和工具。尽量减少对环境造成的风险的选项。尽管与其他隧道施工方法相比,机械化隧道施工需要较高的初始投资,但它为建设城市隧道提供了一种安全且高效的方法。在机械化隧道掘进过程中,衬砌起着至关重要的作用,为内部结构(如道路、设施)提供支撑。同时,它有助于稳定地面状况。衬砌与顶升系统一起提供了在挖掘过程中推动隧道盾构 (TBM) 的方法。在这项工作中,我们解决了隧道衬砌管片的有效建模和仿真问题。目的是展示一种系统且通用的方法来分析不同实际情况下的隧道衬砌。在建模方面,采用基于BIM的方法,将日常工程实践中使用的用户友好的软件界面与有效的仿真工具连接起来。所提出的方法利用设计模型中几何的高阶定义以及参数化模型定义来重建相应的高阶数值模型。这产生了高精度且计算成本低的模型,用于分析复杂结构,包括基于非线性表面弹簧模型与土壤的相互作用。此外,它还可以高精度分析衬砌段中的应力和弯矩。数值结果表明,对于给定的精度,建模工作可以忽略不计,并且计算时间减少了十倍。

更新日期:2023-11-03
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