【摘要】 应用分形几何研究钢筋混凝土结构裂缝扩展形式。研究表明,结构表面裂缝的分形维数与结构力学性能之间存在良好的线性相关性;为了准确测定分形维数,结合工程实例,对比分析了盒计数网格法和数字图像盒维数法测得的分维值,并讨论了各自的优缺点及各自测定的条件,结论对分维值的准确测定能起到一定的指导作用。更多还原

【Abstract】 Fractal geometry is used to investigate the crack evolving process of reinforce concrete structures,and the relationships between the fractal dimension of surface-crack distribution and the mechanical properties of the damaged structure are discussed;in order to determine fractal dimension exactly,by in practical engineering,the fractal dimensions determined by the methods of box-dimension and digital image dimension are analysed.then the advantages and the disadvantages of these methods are analysed;and the determine condition of two methods are obtained.The conclusion gives a new way for determine the fractal dimension.更多还原