Underwater multipoint excitation pseudo-dynamic testing system

Abstract

The invention discloses an underwater multipoint excitation pseudo-dynamic testing system. The system is characterized in that the system is provided with a transparent water tank, the water tank is supported by a support and filled with water, and a bottom plate of the water tank is of a plane structure; a submerged floating tunnel model floating in the water is arranged in the water tank; a plurality of excitation mechanisms are horizontally arranged below the submerged floating tunnel model and are connected with the submerged floating tunnel model through anchor cables; the excitation mechanisms are longitudinally arranged at intervals and are connected with excitation points of the submerged floating tunnel model through the anchor cables in a one-to-one correspondence mode to form a multipoint excitation mechanism; the system is further provided with a driving mechanism which is used for driving the excitation mechanisms to carry out straight reciprocating motion in the transverse direction, the longitudinal direction and the vertical direction, wherein the longitudinal direction is parallel to the axis of the submerged floating tunnel model. The system can meet requirements for sizes of large-sized structural models, represent seismic oscillation and structural responses and provide a powerful means for studying underwater fine-structure seismic response mechanisms and aseismic design.

Description

technical field [0001] The invention relates to a pseudo-dynamic test system, more specifically to a test system for simulating the structural dynamic response of a slender structure underwater under the action of an earthquake. Background technique [0002] In recent years, the exploitation of marine resources has become increasingly frequent, the number of submarine oil and gas pipelines has increased at an alarming rate, and the construction of submarine oil and gas pipelines has flourished. At the same time, people have also extended the use of the ocean to the transportation field, and the research on floating tunnels in water has begun to enter people's field of vision. [0003] Compared with other means of transportation across rivers, lakes and seas, floating tunnels in the water have unique advantages, such as not affecting waterway shipping during operation; protecting the natural scenery of the original water area; not being affected by bad weather, ensuring norma...

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Problems solved by technology

Considering the spatial effect of multi-point seismic input, the seismic waves at different anchor cables show phase differences, and the span of the slender structure is relatively large, so the shaking table experiment simulation is very difficult. At present, there is no test equipment that can realize this function in China.

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