盾构机直接切削玻璃纤维筋洞门进洞技术

玻璃纤维筋是一种非常适用于NOMST工法的材料。文章介绍了玻璃纤维筋的物理力学性质。以珠江三角洲城际轨道交通广州至佛山段土建12标(西朗—鹤洞)盾构区间工程为应用背景,介绍了玻璃纤维筋围护桩的施工技术及盾构机采用NOMST工法直接切削玻璃纤维筋围护桩洞门进洞的施工技术。初步探讨了进洞过程中盾构推力对车站接收端墙的作用,采用有限元法进行了模拟分析,并在此基础上提出了NOMST工法进洞时盾构推力的确定方法。

The Entrance Technology of Directly Cutting Glass Fiber Reinforced Plastic Tunnel Hole by Shield Machine

Glass fiber reinforced plastic is appropriately applicable to NOMST technique.The paper focuses on the introduction to its physical and mechanical properties.Taking the civil engineering,12 contract section(from Xilang to Hedong) which is one section of Pearl River Delta intercity orbit transportation from Guangzhou to Foshan as an example,the paper introduces the construction technique of glass fiber reinforced plastic enclosure piles and employing NOMST technique to cut glass fiber reinforced plastic enclosure piles tunnel hole direcdy by shield machine.Further,based on the analysis of by means of finite element method,the paper explores the action of the thrust of shield machine on the received wall of the station, and puts forward some methods on how to identify the thrust of shield machine while excavating tunnel holes by NOMST technique.