An iterative FEM approach for tunnel shape optimization based on the concept of rational arch axis
文献类型：期刊论文
| 作者 | Bai, Qiangqiang5,6; Chen, Jian1,2,3,4,5,6 |
| 刊名 | STRUCTURES
 |
| 出版日期 | 2021-12-01 |
| 卷号 | 34页码:4634-4651 |
| 关键词 | Rational arch axis Tunnel shape optimization Eccentricity iterative FEM Harmonic hole |
| ISSN号 | 2352-0124 |
| DOI | 10.1016/j.istruc.2021.10.057 |
| 英文摘要 | The shape of tunnel is one of the major factors influencing its stability. Aiming at optimization design of tunnel shape, an iterative FEM approach is proposed based on the concept of rational arch axis, on which the structure is only subjected to axial compressive force without bending moment. In the proposed approach, the eccentricity of each lining node, which is the ratio between bending moment and axial force, is progressively calculated according to the current nodal position until it satisfies a predetermined criterion by continuously changing nodal coordinates. The rational arch axis of lining is then obtained and the optimal tunnel shape is thus determined. Two different tunnels, one with a circular initial shape and the other with a rectangular-like shape, and both with the same stratum and loading conditions, are employed to obtain their optimal shapes by using the proposed method. The optimal shapes obtained are identical and therefore the proposed approach is verified to be effective and robust. Furthermore, this method is applied to the optimization of the shape of a double-hole tunnel. The mechanical responses of tunnel lining and the stress distributions in surrounding rock-soil during the optimization process are investigated as well. The results show that the mechanical behavior of the optimal lining has been improved in terms of force and deformation characteristics, and the rock-soil around the tunnel can be retained in situ avoiding the stress concentration. |
| 资助项目 | National Natural Science Foundation of China[52079135] ; National Natural Science Foundation of China[51909259] ; International Partnership Program of Chinese Academy of Sciences[131551KYSB20180042] ; Science and Technology R & D Project of China State Construction International Holdings Limited[CSCI-2020-Z-21] ; Ningbo Public Welfare Science and Technology Plan-ning Project[2019C50012] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000720477700003 |
| 出版者 | ELSEVIER SCIENCE INC |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/28260]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Chen, Jian |
| 作者单位 | 1.Natl Local Joint Engn Res Ctr Underwater Tunnelli, Wuhan 430063, Peoples R China 2.Ningbo Univ Technol, State Key Lab Geomech & Geotech Engn, Soft Soil Res Ctr, Ningbo 315211, Peoples R China 3.China Pakistan Joint Res Ctr Earth Sci, Islamabad, Pakistan 4.Hubei Key Lab Geoenvironm Engn, Wuhan 430071, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai, Qiangqiang,Chen, Jian. An iterative FEM approach for tunnel shape optimization based on the concept of rational arch axis[J]. STRUCTURES,2021,34:4634-4651. |
| APA | Bai, Qiangqiang,&Chen, Jian.(2021).An iterative FEM approach for tunnel shape optimization based on the concept of rational arch axis.STRUCTURES,34,4634-4651. |
| MLA | Bai, Qiangqiang,et al."An iterative FEM approach for tunnel shape optimization based on the concept of rational arch axis".STRUCTURES 34(2021):4634-4651. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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