基于LS-SVM的高速铁路BIM数据建模研究
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摘要
对高速铁路建设的三维场景进行实时绘制和建模,是BIM技术在工程设计施工可视化中的重要内容。针对工程建设管理中所用网络带宽无法满足大量BIM三维场景数据处理的问题,此文以高速铁路横断面局部坐标系和相对角度为时序变量,建立BIM数据的时序预测模型,并基于改进的最小二乘支持向量机(LS-SVM)的BIM数据建模和传输方法,使模型参数和训练样本数据代替原始数据进行传输,提高数据传输效率。以郑武线部分路段的切向角建模进行数据建模试验,验证此方法的可行性。
Real-time rendering and modeling of three-dimensional scene of high-speed railway construction is an important part of BIM technology in engineering design and construction visualization. But the network bandwidth used in engineering construction management can not satisfy the massive BIM three-dimensional scene data processing. Therefore,the time series prediction model of high BIM data is established by taking the local coordinate system and relative angle of high-speed railway cross-section as time series variables. And based on the improved least squares support vector machine( LS-SVM) BIM data modeling and transmission method,the original data are replaced by the model parameters and training sample data to improve data transmission efficiency. The feasibility of this method is verified by the data modeling experiment carried out based on the tangential angle of some sections of Zhengzhou-Wuhan high-speed railway.
Real-time rendering and modeling of three-dimensional scene of high-speed railway construction is an important part of BIM technology in engineering design and construction visualization. But the network bandwidth used in engineering construction management can not satisfy the massive BIM three-dimensional scene data processing. Therefore,the time series prediction model of high BIM data is established by taking the local coordinate system and relative angle of high-speed railway cross-section as time series variables. And based on the improved least squares support vector machine( LS-SVM) BIM data modeling and transmission method,the original data are replaced by the model parameters and training sample data to improve data transmission efficiency. The feasibility of this method is verified by the data modeling experiment carried out based on the tangential angle of some sections of Zhengzhou-Wuhan high-speed railway.
引文
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