Simplified reliability assessment approach for tunnel structures considering the effects of adjacent excavation and soil uncertainty
文献类型：期刊论文
| 作者 | Tian, Ning1,2,3; Chen, Jian1,3; Zhou, Ningxi1,3; Lan, Peng2,4; Huang, Jinsong2 |
| 刊名 | STRUCTURES
 |
| 出版日期 | 2023-12-01 |
| 卷号 | 58页码:15 |
| 关键词 | Tunnel structure Soil uncertainty Reliability analysis Direct Monte-Carlo simulation Response surface method Adjacent excavation Soil-structure interaction |
| ISSN号 | 2352-0124 |
| DOI | 10.1016/j.istruc.2023.105514 |
| 英文摘要 | Reliability assessment of tunnel structures is a fundamental concern in civil engineering, as tunnels are inevitably affected by adjacent excavation projects, resulting to additional deformations. The complexity of this subject is further amplified when considering the soil uncertainty. In this study, a direct Monte-Carlo simulation (DMCS) approach is proposed to evaluate the reliability of tunnels structures after disturbed by adjacent excavation. Random variables are employed to capture the uncertainty in soil mechanics parameters, while the tunnel is modeled as a Timoshenko beam placed on a Pasternak foundation, allowing for the consideration of generalized deflections and shearing deformation, as well as the bending deformation. A comparison between DMCS, Response Surface method (RSM) and First-order Second-moment (FOSM) method is performed through a typical engineering example. The results demonstrate that DMCS accurately captures the reliability of tunnel structures and requires less computational effort, as it eliminates the need for re-establishing response surface functions through numerical simulations. Further parametric analysis investigates the influence of coefficient of variation (COV), cross-correlation, and probability distribution types of soil parameters on reliability of tunnel, which indicated that the COV and probability distribution types had a significant influence, while the impact of cross correlation was limited. The reliability of tunnel structures is more sensitive to the variability of elastic modulus. Additionally, the reliability results obtained when assuming soil parameters follow a normal distribution are lower than those obtained when considering them as log-normal distributions. The proposed method offers an accurate and practical tool for evaluating the reliability of operational tunnel structures in the presence of adjacent excavations. |
| 资助项目 | Na- tional Natural Science Foundation of China[52079135] ; University of Chinese Academy of Sciences |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001115013800001 |
| 出版者 | ELSEVIER SCIENCE INC |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40068]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Chen, Jian |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Univ Newcastle, Coll Engn Sci & Environm, Discipline Civil Surveying & Environm Engn, Callaghan, NSW 2308, Australia 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Cent South Univ, Sch Civil Engn, Changsha 410075, Hunan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tian, Ning,Chen, Jian,Zhou, Ningxi,et al. Simplified reliability assessment approach for tunnel structures considering the effects of adjacent excavation and soil uncertainty[J]. STRUCTURES,2023,58:15. |
| APA | Tian, Ning,Chen, Jian,Zhou, Ningxi,Lan, Peng,&Huang, Jinsong.(2023).Simplified reliability assessment approach for tunnel structures considering the effects of adjacent excavation and soil uncertainty.STRUCTURES,58,15. |
| MLA | Tian, Ning,et al."Simplified reliability assessment approach for tunnel structures considering the effects of adjacent excavation and soil uncertainty".STRUCTURES 58(2023):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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