Tunnel reinforcement via topology optimization
Tunnel reinforcement via topology optimization
复制标题
通过拓扑优化加固隧道
DOI：
10.1002/(sici)1096-9853(200002)24:2
复制
发表时间：
2000
影响因子：
4
通讯作者：
T. Guo
中科院分区：
文献类型：
--
作者：
L. Yin;Wei Yang;T. Guo
锚杆支护是隧道支护的基本方法。它加固了原岩，并减小了隧道表面沿着的变形。其布局的拓扑复杂性使得设计方法变得困难。一个数字的方法来加强东道国的理由变得可取。本文提出了一种基于两相单元模型和主接地有限元离散化的拓扑优化方法。该单元由原岩和加固材料组成。设计问题涉及加固材料的分布。优化两相在各单元中的相对比例，以降低隧道的顺应性。
该方法使地下结构支护的计算机辅助设计成为可能。该方法的能力证明了设计，以支持在各种原地应力下的深隧道。结果表明，沿主应力绝对值最大的方向沿着需要定向配筋。版权所有© 2000约翰威利父子有限公司。
Anchoring is a fundamental method for supporting tunnels. It reinforces the original rock mass and reduces the deformation along the tunnel surface. The topological complexity of its layouts renders a design methodology difficult. A numerical approach to reinforce the host ground becomes desirable. The present paper proposes a topology optimization method based on a two-phase cell model and finite-element discretization of the host ground. The element consists of the original rock and the reinforcing material. The design issue involves the distribution of the reinforcing materials. The relative ratios of the two phases in various elements will be optimized to reduce the compliance of the tunnel.
The method enables the computer-aided design for the support of underground structures. The capabilities of the method are demonstrated by the designs to support a deep tunnel under various in situ stresses. The results indicate that oriented reinforcement is needed along the direction of the largest absolute value of the principal stress. Copyright © 2000 John Wiley & Sons, Ltd.