摘要
悬浮隧道是未来峡湾跨越、深海通道等重大交通工程建设的重要方式。针对悬浮隧道建设的关键问题,综述近年来国内外悬浮隧道断面结构型式、管节结构动力响应、锚索涡激振动、悬浮隧道试验技术及悬浮隧道适应性等方面的研究进展,总结出悬浮隧道结构动力响应研究存在的关键问题,并对悬浮隧道进一步深入研究的方向进行展望。结果表明: 1)在断面设计方面,耳形或椭圆形断面型式的悬浮隧道在复杂动水环境中稳定性好,但也需要综合考虑管节结构断面型式、浮重比与布置方式等因素;2)在结构与锚索动力响应方面,现有研究方法以理论推导与数值模拟为主,模型试验技术相对薄弱,有必要开展环境荷载-交通荷载-悬浮隧道多荷载耦合下的模型试验,验证理论分析与数值模型;3)在适用性方面,有必要在有条件的水域建设小型悬浮隧道对静态水域开展实体隧道研究,发现并解决问题,为复杂海况下大型悬浮隧道建设提供技术积累。
Construction of submerged floating tunnel (SFT) is one of the major solutions for fjord crossing projects and deep sea crossing projects in the future. Aimed to solve the key problems in SFT construction, the authors present an overview on the progress of the researches made in China and other countries in recent years on cross-section of SFT, dynamic response of SFT segment structure, vortex-induced vibration of anchor cable, testing technique and applicability of SFT, summarize the critical problems in the dynamic response research of SFT structures and make prospect on the trend of further SFT research. Conclusions are drawn as follow:(1) In the aspect of cross-section design, SFT with ear-shaped or elliptical cross-section has good stability in the complex environment of flowing water, with factors comprehensively considered, such as cross-section of SFT segment structures, buoyancy-weight ratio and layout.(2) In the aspect of dynamic response of structures and anchor cables, the current research methods are mainly based on theoretical derivation and numerical simulation, and poorly rely on model-based testing technique;therefore, it is necessary to perform model tests under combined loads from the environment, traffic and SFT, for mutual check between the theoretical analysis and numerical model.(3) In the aspect of applicability, it is necessary to build small SFT in feasible water conditions to make research on the physical SFT in the static waters, to identify problems and to lay a foundation technically for building large SFTs in the complex sea conditions.
作者
丁浩
程亮
李科
DING Hao;CHENG Liang;LI Ke(China Merchants Chongqing Communications Research & Design Institute Co.,Ltd.,Chongqing 400067,China)
出处
《隧道建设（中英文）》
北大核心
2019年第6期901-912,共12页
Tunnel Construction
