【摘要】：提出基于統(tǒng)一強(qiáng)度理論和非相關(guān)聯(lián)流動(dòng)法則,推導(dǎo)同時(shí)考慮中間主應(yīng)力和約束損失兩種因素作用下的圍巖彈塑性應(yīng)力-位移解析解.結(jié)合算例,分析中間主應(yīng)力和約束損失對(duì)圍巖特征曲線的影響規(guī)律.結(jié)果表明:考慮中間主應(yīng)力的影響,能夠充分發(fā)揮圍巖的強(qiáng)度;考慮約束損失的影響,計(jì)算得到的圍巖塑性區(qū)徑向位移值減小,說明在利用圍巖特征曲線進(jìn)行支護(hù)設(shè)計(jì)時(shí),同時(shí)考慮以上兩種因素,能夠取得較好的經(jīng)濟(jì)效益.
[Abstract]:Based on the unified strength theory and the uncorrelated flow rule, the analytical solution of elastic-plastic stress-displacement of surrounding rock under the action of both intermediate principal stress and constraint loss is derived. The strength of surrounding rock can be fully utilized and the radial displacement value of plastic zone of surrounding rock can be reduced by considering the influence of constraint loss, which indicates that the better economic benefit can be obtained by taking the above two factors into account in the design of supporting with surrounding rock characteristic curve.
【作者單位】： 華僑大學(xué)巖土工程研究所;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51278208) 福建省交通科技發(fā)展基金資助項(xiàng)目(200910)
【分類號(hào)】：U451.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前8條

1 許東俊;耿乃光;;巖石強(qiáng)度隨中間主應(yīng)力變化規(guī)律[J];固體力學(xué)學(xué)報(bào);1985年01期

2 劉志欽;余東明;;考慮中間主應(yīng)力和剪脹特性的深埋圓巷彈塑性應(yīng)力位移解[J];工程力學(xué);2012年08期

3 徐德欣;巖石中間主應(yīng)力效應(yīng)的理論分析[J];山地學(xué)報(bào);2003年02期

4 李煜，

本文編號(hào)：2197099