Test method and special device for longitudinal bending strength of cable-stayed bridge cabin

Abstract

The invention relates to an experiment method and a special device for the total longitudinal bending strength of a cable-stayed bridge cabin, belonging to the technical field of bending strength measurement; the special device for the experiment includes a cabin, a simulated deck, a cable-stayed bridge, a pile foundation platform and a pressure monitoring system; For the two types of experimental conditions of ship arching and sagging, the experimental device for simulating the arching condition and the experimental device for simulating the sagging condition are designed respectively. The difference between the two experimental devices lies in the location of the cable-stayed bridge; it is located under the deck A pressure sensor is arranged at the joint between the buffer rubber pad on the actuator and the deck, and together with the force measuring device on the cable-stayed bridge, real-time pressure data is collected into the loading state monitoring system. Experimental methods include finite element simulation; result analysis and determination of test points; loading load design; step-by-step loading; data extraction and processing. The invention determines the positions of the experimental measuring points in a targeted manner through the finite element simulation method, saves a large amount of experimental resources, and has broad application prospects.

Description

technical field [0001] The invention relates to an experiment method and a special device for the overall longitudinal bending strength of a cable-stayed bridge cabin, belonging to the technical field of bending strength measurement. Background technique [0002] The superstructure refers to the enclosure above the upper deck of the ship, which extends from one side to the other or whose side walls shrink inward from the shell plating by no more than 4% of the ship's breadth. The masts, radar antennas and other equipment of modern ships are generally arranged on the superstructure. As the structural foundation for carrying the above important equipment, the superstructure needs to meet sufficient standards in terms of structural strength and stability. Due to the rapid advancement of material technology, traditional metal materials are gradually withdrawing from the superstructure field of ships. However, due to the short time for new materials to appear and the unique stru...

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Problems solved by technology

However, the methods mentioned in the above papers have several defects: 1. There is a lack of a simulation scheme for the sag condition; 2. A set of practical and effective experimental methods has not been proposed; 3. The setting of the actuator only exists in the numerical simulation In , the loading problem caused by the simulated deck deformation is ignored; 4. The application of the cable loading force in the cable-stayed bridge is ignored;

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