摘要
主要是基于在港珠澳大桥岛隧工程沉管隧道E32-E31管节接头处发生异常沉降之后,提出的通过向沉管基础密闭腔内压浆来实现预压基床、抬升管节的构想。在通过大量调研现有国内外相关研究理论成果基础上,首次提出利用近似帕斯卡原理通过压力传递实现沉管姿态的可控调节。该构想在E32-E31管节接头基础后注浆的实施结果中得以证明,起到了基床协调差异沉降、预压密实基床、调控沉降形态的目的。同时,该构想的成功实施创造了一种调控管节沉降的新方法,可为后续类似工程借鉴。
This thesis is mainly based on the concept of preloading foundation bed and lifting pipe joint after the abnormal subsidence occurred at the joint of E32-E31 pipe joint of immersed tunnel of Hong Kong-Zhuhai-Macao Island and Tunnel Project.Based on a large number of existing research results at home and abroad,it is the first time to propose the use of approximate Pascal principle through the pressure transmission to achieve immersed tube attitude regulation.The concept is proved in the results of post-grouting grouting of E32-E31 pipe joints,which plays the role of differential settlement of foundation bed,preloading of compact bed and regulation of settlement form.At the same time,the successful implementation of this idea has created a new method of controlling settlement of pipe joints which is again applied when dealing with the ultimate stiffness of the final joint.
作者
张洪
苏怀平
王李
ZHANG Hong;SU Huai-ping;WANG Li(China Communications 2nd Navigational Bureau 2nd Engineering Co.Ltd.,Chongqing 401121,China)
出处
《公路》
北大核心
2018年第8期95-99,共5页
Highway
关键词
沉管隧道
最终接头
基础后注浆
超低强度水下不分散混凝土
immersed tunnel
final joint
after the foundation grouting
ultra-low strength underwater non-dispersible concrete
