考虑中间主应力与约束损失的深埋圆形隧道围岩特征曲线分析
发布时间：2018-08-22 12:26
【摘要】：提出基于统一强度理论和非相关联流动法则,推导同时考虑中间主应力和约束损失两种因素作用下的围岩弹塑性应力-位移解析解.结合算例,分析中间主应力和约束损失对围岩特征曲线的影响规律.结果表明:考虑中间主应力的影响,能够充分发挥围岩的强度;考虑约束损失的影响,计算得到的围岩塑性区径向位移值减小,说明在利用围岩特征曲线进行支护设计时,同时考虑以上两种因素,能够取得较好的经济效益.
[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.
【作者单位】： 华侨大学岩土工程研究所;
【基金】：国家自然科学基金资助项目(51278208) 福建省交通科技发展基金资助项目(200910)
【分类号】：U451.2
[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.
【作者单位】： 华侨大学岩土工程研究所;
【基金】：国家自然科学基金资助项目(51278208) 福建省交通科技发展基金资助项目(200910)
【分类号】：U451.2
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