摘要
根据Kelvin解,推导了压力型锚杆锚固段的弹性黏结应力和正应力分布方程。在推导过程中,考虑了三向应力状态对锚固段黏结应力的提高作用。经过与现场试验实测数据的对比分析,验证了理论计算公式的可靠性。采用软质岩体条件下的参数,对锚固段应力分布进行了计算,总结了岩石条件下锚固段应力分布特点,并分析了各种岩土参数变化对锚固段应力分布的影响,为压力型锚杆的进一步理论研究和工程实践提供了基础。
According to the Kelvin＇s solution,considering three-dimensional stress state,the distribution formulas of normal stress and shear stress（that is,friction on the interface between the grout and the rock） along bonded length of compression type rock bolt are derived.Comparing with the in-situ experimental data,dependability of the formulas are proved.The stresses distribution along bonded length is analyzed with various parameters of soft rocks.This research offers a basis for the compression type rock bolts.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2008年第6期1517-1520,共4页
Rock and Soil Mechanics
基金
国家自然科学基金项目批准号(No.50378096)
关键词
压力型锚杆
锚固段
黏结应力
弹性分析
compression type rock bolt
bonded length
shear stress
elastic analysis
