A test model and method of a floating tunnel under the joint action of earthquake and wave current

Abstract

A test model and method for a floating tunnel under the joint action of earthquake and wave current. The test model includes a test tank, a test model pipe body, an anchoring system, a vibration generation and transmission system, and a sensing and measuring instrument. The vibration generation and transmission system includes a small Vibrating table, mechanical transmission device and sliding false bottom, the small vibrating table is installed directly above the test water tank through the load-bearing bracket, the table top of the small vibration table is connected with the sliding false bottom through the mechanical transmission device; the sliding false bottom is installed in the test water tank; The test model pipe body is installed on the sliding false bottom through the mooring system; a white background paper is pasted on one end of the test model pipe body; the sensing and measuring instruments include a gyroscope, an acceleration sensor, and a non-contact strain displacement measuring instrument. The invention realizes the dynamic response test of the suspension tunnel under the joint action of various seismic loads and wave current loads, greatly reduces the test cost, and provides a reliable basis for the design and construction of the suspension tunnel in the future.

Description

technical field [0001] The invention relates to the fields of marine engineering and bridge tunnel engineering, in particular to a dynamic response test model and method of a floating tunnel under the joint action of earthquake and wave current. Background technique [0002] Floating tunnel is a traffic structure that crosses straits, lakes and long and deep waters. It generally consists of a tubular structure floating in the water at a certain depth, an anchor cable rod (or floating box on the water) device anchored on the underwater foundation, and an anchor anchor It is composed of the underwater uplift foundation of rods or anchoring devices and the structures connected to both banks. The potential construction areas of floating tunnels are mainly concentrated in the circum-Pacific seismic zone. Under complex factors such as wave loads and earthquakes, the pipe body and anchor cables will have a large dynamic response, which will affect the normal operation of traffic. ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a dynamic response test model and method of a floating tunnel under the joint action of earthquake and wave current, especially for small shaking tables, in view of the above-mentioned shortcomings in the existing floating tunnel dynamic response test. It can realize the dynamic response test of the floating tunnel under the joint action of various seismic loads and wave current loads, greatly reducing the test cost, and providing a reliable reference for the design and construction of future floating tunnels

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