Test device for dynamic response of subsea tunnel under simulated tidal load
A subsea tunnel and dynamic response technology, applied in fluid dynamics test, measuring device, soil material test, etc., can solve problems such as danger, complex water and soil pressure response, pore pressure accumulation, etc., achieve low cost, convenient experiment implementation, and reduce The effect of labor intensity
Active Publication Date: 2019-02-22
ZHEJIANG UNIV
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Problems solved by technology
The tidal action not only affects the change of the total stress, but also changes the hydraulic boundary conditions, and for the impermeable soil layer, there is also the problem of pore pressure accumulation. Therefore, under the tidal load, the response of water and soil pressure inside the seepage field is a complex one. The problem
The current design codes often design the highest water level within a return period as a constant water level, but whether this simplification is dangerous or safe, the existing research has not given the answer
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[0043] The present invention will be further described below in conjunction with the accompanying drawings and implementation examples.
[0044] As shown in Fig. 1(a) and Fig. 1(b), the present invention simulates a dynamic response test device of a subsea tunnel under tidal load, including a water level fluctuation system, a model box, a tunnel 28, a support system and a measurement system.
[0045] Such as figure 2 , 3 As shown, the constant water level water tank 1 is a topless water tank formed by bonding 5 square plexiglass plates with AB glue; the top of the first side of the constant water level water tank 1 has a hole for installing the water inlet valve 2; The water inlet pipe valve 2 is connected to the water source through the water inlet pipe 3, and the water inlet speed can be controlled by adjusting the water inlet pipe valve 2; the second side center of the constant water level water tank 1 has a hole for installing the water outlet pipe valve 4; The water pip...
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The invention discloses a subsea tunnel dynamic response test apparatus under a simulated tidal load effect. The subsea tunnel dynamic response test apparatus comprises a water level fluctuation system, a model box, a tunnel, a supporting system and a measurement system. The water level fluctuation system comprises a constant water level water tank, a water inlet pipe valve, a water outlet pipe valve, a communication pipe valve, a vertical rod, a sliding cavity, a curved rod, a circular ring, a speed reducer and the like. The model box comprises a model box bottom plate, angle steel, a model box left side rotating plate, a model box back panel and the like. The supporting system comprises a supporting fork, a supporting pipe and a supporting base. The measurement system comprises a strainsheet, a water inflow box and a pore pressure gauge; the strain sheet is adhered onto the outer surface of the tunnel and used for measuring the deformation of the tunnel; the water inflow box is usedfor measuring a water inflow amount of the tunnel; and the pore pressure gauge is fixed on a sensor fixed support and used for measuring water pressure of a seabed pore. By adopting the subsea tunneldynamic response test apparatus, different tidal load factors can be simulated, and the water pressure response of peripheral seabed pores of the seabed tunnel can be researched under the conditionsof different tunnel embedding depth, different excavation radiuses, different building thicknesses and the like.
Description
technical field [0001] The invention relates to a test device for measuring pore water pressure, tunnel strain and tunnel water inflow in submarine tunnel engineering, especially a model test device for the response of seabed soil pressure and pore water pressure around the submarine tunnel with changes in tidal elements, which can be used for Measure the pore water pressure of the seabed around the subsea tunnel under different tunnel embedment depths, tunnel excavation radii, and lining thicknesses. Background technique [0002] With the acceleration of China's urbanization process, more and more coastal cross-river tunnel projects have appeared in the eastern coastal areas. Compared with cross-sea and cross-river bridges, tunnels have less damage to the environment and are almost immune to weather. conditional impact. But these tunnel projects will all face the same problem, namely the influence of tidal action. The tidal action not only affects the change of the total ...
Claims
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IPC IPC(8): G01N33/24G01M10/00G01L5/00
CPCG01L5/0004G01M10/00G01N33/24
Inventor 应宏伟朱成伟王霄王迪沈华伟许鼎业章丽莎
Owner ZHEJIANG UNIV