3D打印技术在高铁隧道仰拱隆起病害模拟试验中的应用与研究

doi:10.13722/j.cnki.jrme.2019.0947

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摘要高铁隧道仰拱隆起病害频发，严重影响线路正常运营。提出一种用于高铁隧道变形致灾病害试验模拟的新方法，利用3D打印技术构建高铁隧道结构及附属设施精细模型，全方位考虑高铁隧道附属设施的工作状态，并系统介绍3D打印隧道模型的构件类型、打印材料及优选方法、打印流程等多方面内容；依托典型病害案例进行相似模型模拟试验，重现现场病害特征，探讨隧道排水量、结构外水压力和结构位移量的规律特征。研究结果表明：随地下水位的上升，隧道排水量与地下水位呈对数型增长关系；地下水位20 m后隧道排水量增量明显减缓、结构外水压力显著增加(尤其是隧底与拱顶)、底部结构隆起持续增长，且存在“隧底＞内轨＞外轨”的隆起量值特征；至地下水位50 m时试验结果与现场病害特征吻合良好，验证了该方法的可行性与有效性。研究成果可为隧道病害及类似隧道模型试验的精细化模拟提供借鉴。

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	李林毅1
	阳军生1
	王立川1
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	高超1
	蒋买勇3
	王子建1

关键词 ：隧道工程, 3D打印技术, 高铁隧道, 仰拱隆起, 病害模拟, 模型试验

Abstract：Invert heaving diseases occur frequently in high-speed railway (HSR) tunnels，seriously affecting the normal operation of railway lines. A new method for simulating deformation-induced diseases in HSR tunnels was proposed. A refined HSR tunnel model with tunnel structure and accessory facilities was constructed by using 3D printing technology，and the working state of accessory facilities was considered in an all-round way. Those things related to the HSR tunnel model building were described in detail，including the classification of model components，3D printing materials and their selection method，printing process，etc. Based on typical disease cases，disease simulation experiment was carried out to reproduce the disease characteristics of the site，and the characteristics of drainage，external water pressure and structural displacement were also discussed. The results show that，with increasing the groundwater level，the tunnel drainage increases logarithmically.While the groundwater level is more than 20 m，the increment of the drainage decreases obviously，the external water pressure of the structure increases significantly(especially at the bottom and the vault)，and the uplift of bottom structure increases continuously with a feature of tunnel bottom＞inner rail＞outer rail. When the groundwater level is 50 m，the test results are in good agreement with the field disease characteristics，which verifies the feasibility and validity of the method. The research results are expected to provide reference for fine simulation of tunnel diseases and similar tunnel model tests.

Key words： tunnelling engineering')" href="#">

tunnelling engineering 3D printing technology high-speed railway tunnel invert heaving disease simulation ')" href="#">model test

引用本文:

李林毅1，阳军生1，王立川1，2，高超1，蒋买勇3，王子建1. 3D打印技术在高铁隧道仰拱隆起病害模拟试验中的应用与研究[J]. 岩石力学与工程学报, 2020, 39(7): 1369-1384.
LI Linyi1，YANG Junsheng1，WANG Lichuan1，2，GAO Chao1，JIANG Maiyong3，WANG Zijiang1. tunnelling engineering；3D printing technology；high-speed railway tunnel；invert heaving；disease simulation；model test#br#. , 2020, 39(7): 1369-1384.

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http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2019.0947 或 http://rockmech.whrsm.ac.cn/CN/Y2020/V39/I7/1369

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