Self-elevating type offshore platform wind load coefficient test experimental system

Abstract

The invention discloses a self-elevating type offshore platform wind load coefficient test experimental system. The self-elevating type offshore platform wind load coefficient test experimental system comprises an experimental platform, a monitoring platform and a control platform, wherein the experimental platform comprises a simulated wind field channel, an atmospheric boundary layer simulation device and a wind flow generation device; the simulated wind field channel comprises a ventilation pipeline and an offshore platform model arranged inside the ventilation pipeline; the atmospheric boundary layer simulation device comprises a momentum loss device, a lateral mixing device and a ground roughness element; the wind flow generation device comprises an air blower and a flow guiding screen plate; the monitoring platform comprises a wind power, wind pressure and wind velocity signal acquisition and processing unit; and the control platform comprises an air blower control unit which is used for controlling output power of a motor of the air blower so as to product wind flows at different wind velocity gradients under the condition of different power, and a data acquisition and processing unit which is used for acquiring, processing, analyzing and displaying signals from the monitoring platform in real time.

Description

technical field [0001] The invention relates to wind load testing technology, in particular to an experimental system for testing wind load coefficient of a self-elevating offshore platform. Background technique [0002] In the complex and changeable marine natural environment, the jack-up offshore platform will be affected by the loads formed by wind, waves, ocean currents and sea ice. Among them, the wind load is the most important control load in structural design, and it accounts for all environmental loads. The largest proportion. The size of the wind load is directly related to the safety of the platform under working conditions. Under the action of wind load, the platform structure may yield damage due to excessive stress, and at the same time, the platform may suffer fatigue damage due to the dynamic alternating effect of wind load. Therefore, the accurate prediction of wind load is of great significance to the safety and economy of the platform. In order to ensure ...

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Problems solved by technology

my country currently lacks relevant on-site observation data of wind loads on offshore platforms. Although wind tunnel experiments are an effective means to determine wind loads on platforms, the cost of experiments is generally high, and they are not suitable for use in the initial stage of design.

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