摘要
采取自编弹塑性有限元程序,在考虑岩体节理和施工爆破影响的条件下,对常-张高速公路的k135层状岩质边坡的开挖过程进行了模拟,分析了开挖过程中岩体的变形和应力状态及屈服状态,并用降低材料强度储备的有限元强度折减法,对各开挖阶段边坡的整体稳定性进行了评价。通过分析表明,k135边坡在其施工过程中是稳定的。
The simulation of stage excavation of the stratified rock slope of Chang-Zhang expressway is carried out by using our own two-dimensional elastoplastic finite element program, in consideration of the influence of blasting and rock joint. The rock-mass＇s deformation, stresses and yielding state in the excavation process are analyzed respectively. The integral safety of the high slope for every stage excavation is discussed by using the method of lowing material＇s strength safety factor. The results show that the slope is stable in construction process.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2006年第11期1935-1940,共6页
Rock and Soil Mechanics
关键词
层状岩质边坡
开挖过程模拟
弹塑性有限元
有限元强度折减法
整体稳定性分析
stratified rock slope
simulation of stage excavation
elastoplastic finite element method
method of lowing material＇s strength safety factor
stability analysis
