摘要
采用预应力锚杆加固边坡,锚杆的蠕变特性会使锚杆产生应力松弛的破坏性变形.因此,建立锚杆加固边坡蠕变力学模型,利用MSCMarc软件对所建立的模型进行蠕变分析,研究锚杆蠕变特性对锚杆预应力松弛的影响,详细给出在不同弹性模量及蠕变参数下锚杆的蠕变曲线和应力松弛曲线,从而进一步评价锚杆加固边坡的安全性能,为有效控制边坡的有害变形提供理论参考.
If the prestressed anchor is used to reinforce slope, the destructive deformation may be produced by prestressed relaxation due to anchor＇s creep characteristics. The creep mechanics model is established for anchor-reinforcing slope, in which the software MSC Marc is used to analyze creep characteristics. The prestressed relaxation of anchor is studied under the influence of creep characteristics. The creep curves and stress relaxation curves of anchor are presented under different Young＇ s modulus and creep parameter. The safety performance of reinforced slope is further evaluated. The analysis provides theoretical reference for controlling the injurious deformation of slopes effectively.
出处
《计算机辅助工程》
2007年第2期8-10,27,共4页
Computer Aided Engineering
基金
国家自然科学基金(10372071)
关键词
边坡
蠕变
应力松弛
预应力锚杆
有限元
slope
creep
stress relaxation
prestressed anchor
finite element
MSC Marc
