数值模拟法确定锚固段长度  

Anchoring Depth Determination by Numerical Simulation

作　　者：张德圣[1] 姜玉松[1] 林舸[2] 林斌[1] 

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001 [2]中国科学院广州地球化学研究所,广东广州510640

出　　处：《安徽理工大学学报（自然科学版）》2010年第3期32-35,共4页Journal of Anhui University of Science and Technology:Natural Science

基　　金：安徽理工大学博士科研启动基金资助项目(11050)

摘　　要：为了准确地确定锚固段长度,满足锚索工程的设计与施工。运用数值模拟方法来计算锚固段剪应力和轴力的分布规律,从而进一步确定锚固段长度。模拟结果显示：锚固段剪应力分布曲线基本呈指数函数形式分布;而锚固段轴力在始端较大,并向末端迅速衰减。对于小湾电站片麻岩质边坡预应力锚索（1 000~2 000 kN）来说,其锚固段长度初步确定为：2.5~4.5m。In order to accurately determine anchoring depth,meeting the needs of anchorage cable construction and design,researches on distribution of shearing strength and axial force along anchorage section by numerical simulation were performed to determine anchoring depth.The simulation results indicated that shearing strength curve of anchoring section basically presents exponential function distribution,and the axial force value of anchoring section is biggest at origin of cable,and the force rapidly reduces along anchoring section to the end of cable.For anchorage cable with prestress of 1 000～2 000 kN used in gneiss slope of Xiao-wan Hydropower Station,its anchoring depth can be determined preliminarily as 2.5～4.5 m.

关 键 词：预应力锚索 剪应力 轴力 数值模拟 锚固段长度 

分 类 号：TD352.5[矿业工程—矿井建设]