基于支持向量机的架空直立式码头船舶撞击力预测模型

Inversion model of ship impact force of overhead vertical wharf based on support vector machine

针对现有结构监测方法尚无法对码头的不规范靠泊进行实时监测的问题。提出了一种基于支持向量机的预测模型用于对架空直立式码头船舶撞击力的实时监测。结合架空直立式码头的结构特点,基于广义结构刚度对码头桩基的重要性进行评估,对监测桩基进行优化选择。以重庆新田港码头一期第10结构段为概化研究对象,按1:20的比尺构建码头物理模型,模拟不规范靠泊作用。将采集的优化桩基的应变数据用预测模型进行训练与验证。该预测模型对于撞击力的作用位置识别精度为0.98,对于撞击力的作用强度预测的平均相对误差为0.234%。

The existing structural monitoring methods are still unable to monitor the irregular berthing of wharf in real time.This paper proposed an inversion model based on support vector machine for real-time monitoring of ship impact force in overhead vertical wharf.Combined with the structural characteristics of overhead vertical wharf,the importance of wharf pile foundation is evaluated based on generalized structural stiffness,and the monitoring pile foundation is optimized.In this paper,the 10th structural section of Xintian Port Wharf Phase I in Chongqing is taken as the generalized research object,and the physical model of the wharf is constructed according to the scale of 1:20 to simulate the irregular berthing effect.The collected strain data of optimized pile foundation are trained and verified by inversion model.The accuracy of the inversion model for the position of impact force is 0.98,and the average relative error for predicting the strength of impact force is 0.234%.