浅析盾构隧道模型试验的现状与发展

模型试验是盾构隧道相关研究工作中常用的研究手段。文章对目前盾构隧道模型试验所涉及到的问题进行了系统总结分析,将其归结为管片结构的受力问题、隧道结构本身的分析模型问题、结构与围岩的相互作用问题、开挖面稳定问题、结构与邻近结构物的相互作用问题、隧道施工扰动与控制问题,以及其他问题等。通过典型模型试验实例,对每类问题进行了分析阐述,系统归纳了模型试验在盾构隧道相关研究工作中的进展和成果。针对盾构隧道模型试验经常涉及到的诸如结构模型、模型土、模型箱等材料的选择,加载方案的设计,以及试验方案的综合设计等问题进行了阐述分析,并针对性地提出了意见和建议。

Discussion on Present Situation and Development of Model Test of Shield Tunnelling

Model test has been a common approach in the research work of shield tunnelling.The problems related to model test of shield tunnelling are summarized and classified as follows: load conditions of segments,analysis model of tunnel structure,interaction of tunnel structure and surrounding rock,stability of excavation face,interaction of tunnel and neighboring structures,disturbance and control of shield tunnel construction,etc.The research progress and achievements in model test of shield tunnelling are summed up with typical examples.Problems often met in model tests of shield tunnelling are expounded,such as structure model,modeling soil,model boxes selection,loading method,general programming of experiment proposal.Advices for tackling those problems are proposed at the same time.