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深海半潜式钻井平台的垂荡性能是平台作业的制约因素。该文以南海某半潜式平台为例,根据调谐质量阻尼器(TMD)的原理,设计了一种活动式垂荡板,用来减小平台的垂荡响应。该文随后通过AQWA软件计算平台的频率域的水动力参数,并在Simulink平台上建立了该新型平台的时间域模型,根据最小化平台在南海工作海况下的垂荡响应,优化了活动式垂荡板与平台结构连接刚度和阻尼;计算了新型平台在不同海况下的垂荡响应,并与传统半潜式平台和装有固定式垂荡板的半潜式平台的垂荡响应进行比较。结果表明,这种活动式垂荡板结构,在一般海况下的波浪荷载作用下,能够有效降低平台的垂荡响应,且相比安装固定式的垂荡板,有更好的控制效果,为半潜式平台的垂荡响应控制提供了一种新的有效方法。
The heave performance of deep sea semi-submersible drilling rigs is a constraint factor of platform operation. Taking a semi-submersible platform in the South China Sea as an example, based on the principle of tuned mass damper (TMD), a movable heave plate is designed to reduce the platform’s harsh response. Then the hydrodynamic parameters in the frequency domain of the platform are calculated by AQWA software and the time domain model of the new platform is established on the Simulink platform. Based on the dips response of the platform in the South China Sea, The connection stiffness and damping of the swing plate and the platform are calculated. The heave response of the new platform under different sea conditions is calculated and compared with that of the traditional semi-submersible platform and semi-submersible platform with fixed heave plate. The results show that this kind of movable heave plate structure can effectively reduce the heave response of the platform under the wave load under normal sea conditions and has a better control effect than the fixed heave plate, The hedge response control of semi-submersible platform provides a new and effective method.