【摘要】 为了确定地铁盾构隧道管片预埋槽道的最佳断面尺寸、槽体材料、防腐层材料、绝缘层材料等关键参数,以便在国内地铁工程中通用,文章以兰州地铁盾构隧道管片预埋槽道的应用案例为基础,通过理论研究和工程实践,提出了地铁盾构隧道管片槽道的抗疲劳、耐火、绝缘和防腐等性能指标,并对盾构隧道管片预埋槽道的断面尺寸、主槽体和防腐层等关键技术问题进行了研究。研究结果表明:(1)采用断面尺寸为30 mm×20 mm的预埋槽道无论在力学性能还是成本方面都是最佳的;(2)兰州地铁盾构隧道管片预埋槽道采用的主槽体材料、防腐等参数是科学合理的;(3)研究成果不仅为相关国家技术标准的建立奠定了基础,也为同类工程的预埋槽道设计、生产和安装等提供了技术依据。更多还原

【Abstract】 In order to determine the key parameters of optimal section dimension,channel material,material of erosion-resistant coating and insulation layer and etc.,the performance indexes of anti-fatigue,fire-resistance,insulation and erosion-resistance were proposed based on the theoretical research and engineering application of the embedded channel for the shield tunnel segment of Lanzhou metro,and the key techniques of section dimension of the segment embedded channel,main channel body and erosion-resistance coating were studied.The results show that it is optimal to have the embedded channel with the section dimensions of 30 mmx20 mm both in terms of mechanical behavior and cost;it is scientific and reasonable regarding the parameters of material for main channel body and erosion resistance of the embedded channel for the segment of shield tunnel of Lanzhou metro;this research provides a foundation of establishing relative national standards and technical basis for the design,production and installation of embedded channel of similar projects.更多还原