摘要
随着岩体工程的日益发展,人们愈发认识到岩体裂隙发育情况对工程影响的重要性,而岩体节理裂隙网络模拟是研究该类问题的重要手段。基于节理网络模拟结果,建立岩体力学分析模型,然后开展进一步的数值计算分析,在岩体工程中具有良好的发展前景。在岩体结构统计理论的基础上,自行编制了节理岩体裂隙网络模拟分析程序,直观再现了岩体内部的节理分布情况;将程序生成的可执行数据文件与离散元软件相融合;以含节理岩体的地下洞室为例,分别计算了静力和地震荷载作用下地下洞室围岩在不同时段的应力及位移变化情况。计算方法与结果对含节理岩体地下洞室围岩变形和破坏机制以及抗震工程设计具有指导意义。
With the development of rock engineering,the influence of rock joint development on the project is drawing more and more attention;and network simulation of rock joints is an important means for this kind of problem.Mechanical models can be set up based on discontinuity network models;and then fine numerical simulating work can be carried out,which is an attractive direction in rock mechanics.Based on statistical theory of rock structure,this paper develops its own Visual Basic program for analyzing joint network simulation which can visually represents the mass distribution of joint within the rock,and can creates executable data documents which can be combined with discrete elements software.An example of an underground cavern is analyzed under the condition of static load and earthquake load;and the stress and displacement changes of the surrounding rock of cavern during different periods can be obtained.The studying method and results can be instructive to the research of deformation and failure mechanism of underground cavern surrounding rock and the design of earthquake resistant engineering.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2011年第9期2867-2872,2879,共7页
Rock and Soil Mechanics
基金
国家自然科学基金资助项目(No.41072234)
关键词
节理岩体
网络模拟
离散元
地下洞室
稳定性分析
jointed rock
network simulation
discrete elements
underground cavern
stability analysis
