摘要
根据边坡柔性主动加固系统的作用模式和莫尔–库仑破坏准则、极限平衡原理,修正并完善了以高强度钢丝格栅和锚杆所构成的GTC型边坡柔性主动加固系统的作用原理,建立了系统的安全性检算条件和承载能力指标的确定方法,提出了不同条件下锚杆锚固力要求的确定方法,从而完善了系统的设计计算原理和方法体系。
There are some obvious errors and incompleteness in the existing（available） dimensioning concept of GTC flexible slope stabilization systems made of high-strength steel wire mesh in combination with anchor bolt. First, the forces on the mesh resulting from partial instabilities are treated as two independent forces that can＇t be mathematically determined because only one equilibrium equation for them can be formulated. One of the two forces has to be artificially assumed. Second, the longitudinal tensile force of the mesh is assumed as only transmitting to the upper nail; that is, the ability of the GTC flexible system transmitting force all around is neglected. The force concentration degree of the mesh at the upper nail is overestimated; and the dimensioning results are too conservative. Third, the existing concept doesn＇t consider the determination of the lowest force against pull-out of nail. In view of this situation, based on the action mode, the Mohr-Coulomb criterion and the limit equilibrium principle, the concepts of the GTC system are corrected and perfected. Furthermore, the safety checking requirements and the methods to determine the bearing resistance of the systems are established; and the methods to determine the anchoring requirement under different conditions are put forward. So the dimensioning concept and method of the flexible slope stabilization system are perfected.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2006年第2期217-225,共9页
Chinese Journal of Rock Mechanics and Engineering
关键词
边坡工程
边坡加固
柔性防护系统
高强度钢丝格栅
作用原理
设计方法
slope engineering
slope stabilization
flexible protection system
high-strength steel wire mesh
action concept
dimensioning method
