Study on Toughening of Jointed Rock Masses Reinforced with Different Anchor Cables
This paper gives the failure judgment of mini-plastic zones displacement by the mises yielding rule.The anchor cable is simulated by the different link element and inflicting pre-strain according to the difference of mechanism of the consolidated segment and free segment.The stress and strain fields near crack tip of twain collinear cracks of different angle and consolidated condition are simulated by iso-parametric element with eight nodes.The iso-parametric element with eight nodes is degenerated to singular element at crick tip to simulate crack.It is shown that the mini plastic zones displacement near the crack tip begins to increase,then decreases with the increase of the angle of the crack.The better consolidated condition is,the smaller the angle of crack tip is when the mini plastic zones displacement near the crack tip arrives at the biggest value.The mini plastic zones displacement near the crack tip 2 is bigger than that near the crack tip 3.The crack is easier to failure with the increase of load.
Mises yielding rule Ⅰ-Ⅱ mixed crack stress strength gene rock bridge plastic zone
Wang Zhongchang
School of Civil and Safety Engineering, Dalian Jiaotong University, Dalian, Liaoning 116028 China
国际会议
上海
英文
15-15
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）