摘要
采用粒子群算法求出古塔各层的中心点坐标,并对塔层中心进行空间直线拟合.根据拟合直线的方向向量算出塔体每年偏转角度的近似值.对塔层中心的投影点作直线拟合,以投影点在拟合直线上的疏密程度判断塔体局部弯曲程度;以投影点偏离拟合直线的远近及分布判断塔体局部的扭曲程度.研究结果为古塔变形趋势研究提供了新方法.
Using particle swarm optimization algorithm,the pagoda each coordinate of the center point were solved,and space linear fitting on floors of the tower centre was made.According to the direction vector,tower deflection angle approximation of a year was calculated.The projection point of tower center gave a straight line fitting,the local curvature of tower may be jusdged by projected point density in fitting line.Based on projected point distance of deviating fitting line and local distribution, the twist degree of tower local was detemined.The study results provided a new method for studying tower deformation tendency.
出处
《兰州文理学院学报（自然科学版）》
2014年第3期32-36,共5页
Journal of Lanzhou University of Arts and Science(Natural Sciences)
关键词
几何中心
粒子群算法
直线拟合
倾斜
弯曲
扭曲
偏转角
geometric centre
particle swarm algorithm
linear fitting
slope
bent
distortion
the deflection angle
