Indoor model test system for interaction between ice and jacket structure

Abstract

The invention discloses an indoor model test system for interaction between ice and a jacket structure, and the system includes a jacket structure model, an ice force loading system and a test measurement system. The model selects and uses an acrylic material to reduce the fundamental frequency of the model. The ice acting position of the jacket structure model is provided with a mounting supportto realize the simulation of different jacket structure models and ice acting process. The ice force loading system includes a support device, an ice tank and a loading system; the support device includes a support plate, a support frame and a guide rail; rollers are mounted at two sides of the ice tank to move relative to the guide rail; and the loading system includes a triangular support, an electric driving device, a transmission shaft and a pull rope. The test measurement system includes a video measurement module, an ice force measurement module, a displacement measurement module, an acceleration measurement module, an inclination angle measurement module and a structural strain measurement module. The systems of the indoor model test system are independent of each other, the expandability is high, and the process of interaction between different types of structures and sea ice can be simulated by replacing related components.

Description

technical field [0001] The invention belongs to the field of marine engineering and relates to an indoor model test system for the interaction between ice and jacket structures. The main purpose is to conduct indoor model test research on the interaction between ice and jacket structures in a laboratory based on the system. Based on the test system, it is possible to observe the crushing form of the interaction between ice and the jacket structure, the ice vibration response of the structure, and carry out related research such as ice force and structural response analysis. Background technique [0002] The interaction between sea ice and the jacket structure will cause fracture, overlap and accumulation, which will have a relatively serious impact on the offshore platform in a short period of time. The ice load is the control load of the offshore platform in the ice area, and it is also the main factor restricting the design of the ice-resistant structure. Under the action...

AI Technical Summary

Problems solved by technology

At present, the existing indoor model test methods have the following deficiencies: First, the existing test methods simply consider the theory of model similarity, but the difference in model tests is not only reflected in the geometric size, but more importantly, the reduction of the scale has changed many important factors. The structural parameters, motion parameters and dynamic parameters of the model test, which means that the model test may not necessarily reflect the real structure; secondly, most of the existing test technologies use passive loading methods (the model ice plate is fixed, and the model structure is driven through the ice plate method), without considering the impact of structural model stiffness on ice breaking and ice force form; finally, the existing model test methods require low-temperature test chambers and ice pools, which consume a lot of cooling energy and test costs are high

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