纤维混凝土在盾构隧道衬砌管片中的应用研究

由于传统盾构隧道混凝土管片存在的问题,新型管片的研究成为盾构隧道技术研究的一个重要方向.纤维混凝土管片的研究和应用在国内实例较少,尚处于起步阶段.文章通过材料试验,研究了纤维混凝土的抗压性能和高温下的抗爆裂性能,为纤维混凝土管片的应用提供试验依据;通过对纤维混凝土盾构隧道管片的承载力和裂缝宽度的结构分析,得出一些结构设计方面的建议.文章探讨了纤维混凝土管片的应用可能及相关问题,对推动我国新型隧道管片研究和应用具有实际的意义.

Application Study on Shield Tunnel Lining Segment of Fibre Reinforced Concrete

Due to the problems existed in the traditional shield tunnel concrete lining segment, the research of new kind of lining segment becomes an important field of the shield tunneling research. The research of fibre reinforced concrete segment is lacking in application example in China, and still in starting stage. By material tests, the performance of the fibre concrete under compression and temperature are studied, which provides the base for application of the fibre concrete segment. Then on the base of structure analysis on the bearing capacity and the width of crack, some suggestions of structure design for fiber reinforced concrete segment are given. The probability for the application of the fibre reinforced concrete segment and some other related questions are discussed. The fruits will promote the research and the application of new lining segment in our country.