摘要
针对润扬长江公路大桥南汊悬索桥锚碇胶结面抗剪强度(抗剪强度的大小与胶结面粗糙度紧密相关)取值问题,采用室内控制粗糙系数试验的方法,测试了不同粗糙度的花岗岩与混凝土胶结面的抗剪强度.从形态数学原理出发,建立了均方根坡角法(ARMSS)测算岩石与混凝土胶结面轮廓线的分维数,定量描述其粗糙程度.岩石与混凝土胶结面粗糙系数(JRC)可由分形维数D与分形截距A来确定,通过分形分析可以定量估计岩石力学中的JRC值.
For acquiring the shear strength of cementation plane of south anchor of Runyang suspension bridge, an expressway bridge on the Yangtze River, and because the shear strength was decided by the roughness coefficient of cementation plane, the shear strength between different roughness coefficient granites and concrete were obtained in indoor experiments. Based on three-dimensional surface morphology, a new method called Angle of Root Mean Square Slope method （ARMSS） was proposed to calculate fractal dimensions of profiles of cementation plane. Finally the roughness coefficient （JRC） between rock and concrete can be expressed by fractal dimension D and the fractal intercept A, it is a new method to quantify the JRC in geomechanics by using fractal analysis.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2006年第1期20-25,共6页
Journal of China Coal Society
基金
国家自然科学基金资助项目(50479021)
关键词
两相介质
胶结面
粗糙系数
分形描述
分形维数
two-phase medium
cementation plane
roughness coefficient
fractal description
fractal dimension
