Subsea Tunnel Wave Simulation Apparatus Design
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Solution Overview
Problem
Conventional subsea tunnel test apparatuses are large, energy-intensive, and fail to effectively simulate nonlinear complex waves and the interaction between seabed and waves, lacking in simulating the dynamic wave loads and water pressure changes that subsea tunnels face.
Innovation Solution
An experimental apparatus comprising a main control system, wave making test system, rock and soil confining pressure test system, and water level regulation test system, which includes glass plates, telescopic motor springs, baffle plates, and siphon pipes to simulate nonlinear complex waves and regulate water levels, allowing for interaction simulation between the seabed and waves while minimizing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional subsea tunnel test apparatus are used, then the test can be conducted, but the apparatus size is large and energy consumption is high
Solution Approach 1:
The test apparatus is divided into separate functional modules: wave generation module, tunnel model module, seabed simulation module, and data acquisition module. Each module performs a specific function, allowing the system to be compact while maintaining comprehensive test capabilities. The wave generation module uses a wave paddle to create waves in a controlled water tank, the tunnel model module houses the subsea tunnel model, and the seabed simulation module replicates seabed conditions, enabling independent optimization of each component.
Solution Approach 2:
The invention uses scaled models to replicate full-scale subsea tunnel conditions. A proportional tunnel model is constructed with appropriate scaling factors for dimensions, wave heights, and water pressures. This allows comprehensive testing of subsea tunnel characteristics under various wave conditions without requiring full-scale apparatus, dramatically reducing size and energy consumption while maintaining test validity through dimensional analysis and similarity theory.
2Reliability
If conventional subsea tunnel test apparatus are used, then the test can be conducted, but the simulation of nonlinear complex waves is insufficient
Solution Approach 1:
The wave generation system employs a dynamically controllable wave paddle that can adjust its motion characteristics in real-time. The paddle is driven by a motorized mechanism that can generate various wave patterns including regular waves, irregular waves, and nonlinear complex waves by varying amplitude, frequency, and waveform shape. This dynamic control allows the system to simulate different sea states and wave conditions that affect subsea tunnels, enhancing the adaptability and comprehensiveness of the testing.
Solution Approach 2:
The apparatus incorporates multiple adjustable parameters for wave generation including wave height, period, frequency, and waveform type. These parameters can be independently controlled and modified during testing to replicate various ocean conditions. The system can transition between different wave regimes (linear and nonlinear) by changing these parameters, enabling comprehensive study of wave-tunnel-seabed interactions under diverse conditions without requiring multiple specialized apparatus.
3Reliability
If conventional subsea tunnel test apparatus are used, then the test can be conducted, but the interaction between seabed and wave is not considered
Solution Approach 1:
The invention integrates the wave generation module, tunnel model module, and seabed simulation module into a unified test system. The wave paddle generates waves that propagate through water and interact with both the tunnel model and the simulated seabed structure. This combined configuration allows simultaneous observation of wave-tunnel interactions, wave-seabed interactions, and their coupled effects, providing comprehensive data on how waves influence subsea tunnels considering seabed conditions without requiring separate testing facilities.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus effectively simulates subsea tunnel conditions under nonlinear complex waves, considers seabed-wave interaction, and regulates water levels, offering a compact, low-energy solution for exploring the effects on subsea tunnels, with improved simulation accuracy and reduced environmental impact.
Implementation Method 1
a telescopic motor spring is arranged at a bottom of the left side between the two glass plates, a top end of the telescopic motor spring is connected with a wave making bottom plate
Implementation Method 2
a siphon pipe is vertically arranged on a right side of the water tank by virtue of a siphon pipe fixing frame; a water inlet formed in a right end of the siphon pipe is located at a lower part of the water tank; a drainage port formed in a left end of the siphon pipe is located at an upper part of the water tank
Implementation Method 3
a pressure sensor is vertically embedded into each glass plate
Data Source
AI summary
The present invention relates to an experimental apparatus for researching characteristics of subsea tunnel at bottom of seabed under wave, comprising main control system, wave making test system, rock and soil confining pressure test system and water level regulation test system, wherein a bottom of the rock and soil confining pressure test system is connected with the water level regulation test system; a bottom of the wave making test system is connected with the rock and soil confining pressure test system; and all test systems are electrically connected with the main control system. The experimental apparatus, when being small, may simulate the situation of the subsea tunnel under a nonlinear complex wave, may consider the common action of the seabed and the wave, and may regulate water levels and soil pressures, having perfect functions and effectively exploring the effect of various aspects on the subsea tunnel.