This book conducts research on the overall design of the submerged floating tunnel, structural safety standards, environmental load calculation methods, pipe structure selection, joint structure form, anchoring mode, collision avoidance technology, operation ventilation and disaster prevention, etc., and proposes a preliminary engineering technical plan for the submerged floating tunnel in Qiongzhou Strait. It focuses on the domestic and foreign research status of submerged floating tunnels, model experiment theory and method, experimental system, model design, experimental process, experimental results analysis, and other unique achievements and thoughts. This book is suitable for tunnel engineering scientists, tunnel engineering designers, civil engineers, traffic planning designers, civil engineering students, and teachers. Because submerged floating tunnel is a kind of tunnel structure full of innovation and challenge, research results on suspended tunnels are relatively rare. This book includes the design scheme of submerged floating tunnel, model experiment theory, experimental system, analysis of experimental results, etc., which can provide ideas for the current design of submerged floating tunnel, and also provides useful reference for scholars engaged in the research of basic theory and key technology of submerged floating tunnel and related fields.
1 Overview
1.1 Introduction to Submerged Floating Tunnels
1.2 Development Status of Submerged Floating Tunnels
1.2.1 Research on Submerged Floating Tunnel Cross-Section Design
1.2.2 Research on the Dynamic Response of Submerged Floating Tunnel Structures
1.2.3 Research on Submerged Floating Tunnel Construction Technology
1.3 Current Status of Model Experiments on Submerged Floating Tunnels
1.3.1 Development Status of Model Experimental Platforms
1.3.2 Current Status of Model Experiments
2 Theory of Submerged Floating Tunnels Model Experiment
2.1 Similarity Criteria
2.1.1 Gravity Similarity Criteria
2.1.2 Reynolds Similarity Criteria
2.1.3 Elastic Similarity Criteria
2.1.4 Relationship Among Similarity Criteria
2.2 Determination of the Experimental Section
2.3 Determination of the Experimental Scale Ratio for the Model
2.4 Model Similarity Design
2.4.1 Wave Simulation
2.4.2 Water Flow Simulation
2.4.3 Anchor Cable Simulation
2.4.4 Pipe Segment Simulation
3 Subaqueous Tunnel Model Experimental Platform
3.1 Platform Functions
3.1.1 Submerged Floating Tunnel Experiment
3.1.2 Floating Transportation Experiment of Submerged Floating （Immersed Tube） Tunnel Under the Combined Wave-Current Action
3.1.3 Submersion Experiment of Submerged Floating (Immersed Tube） Tunnel Under the Combined Wave-Current Action
3.1.4 Structural Mechanical Performance Experiment of Submerged Floating (Immersed Tube） Tunnel Under the Combined Wave-Current Action
3.1.5 Underwater Foundation Treatment Experiment of Immersed Tube Tunnel
3.1.6 Underwater Drilling and Blasting, Shield Tunnel Experiment
3.2 Water Tank System
3.3 Flow Generation System
3.3.1 Performance Indicators
3.3.2 System Composition
3.3.3 Flow Generation Parameters
3.4 Wave Generation System
3.4.1 System Composition
3.4.2 Working Principle
3.4.3 Data Collection and Data Processing
3.5 Towing System
3.6 Water Supply and Drainage System
……
4 Two-Dimensional Flume Model Experiments of Submerged Floating Tunnels
5 Model Experiments of Submerged Floating Tunnels under Wave-Current Coupling Condition
6 Conclusions
References
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