新暗挖工法“超前模筑初期支护法”研究

结合沈阳某地铁车站,全面介绍该站采用的新暗挖工法的设计及施工技术,阐述采用新暗挖工法的原因,分析该工法与国内传统暗挖工法及NTR工法的区别及其特点,讨论了该工法在国内的应用前景及需要完善的方向。新暗挖工法具有地面沉降小、施工过程安全可靠、适应地层广泛、结构受力明确且造价适中等优点,极具推广价值。

Research on New Subsurface Excavation Method of Advance Formwork Primary Support

With reference to a metro station in Shenyang,this paper introduces the design and construction technology with a new subsurface excavation method applied in this station,describes the reason for choosing the method and analyzes the characteristics and differences of this new method compared with the traditional domestic subsurface excavation method and NTR.The future domestic application and improvement of the method are discussed.The new subsurface excavation method is advantageous in lower ground settlement,higher security and reliability in construction process,wider geological adaptability,clearer structure stress and reasonable cost,and is promising in future application.