Constitutive modeling of weak interlayer zone subject to unloading stress paths in underground excavation based on modified equivalent plastic work
文献类型：期刊论文
| 作者 | Duan, Shuqian1,4; Wang, Hao4; Gao, Po5; Xu, Dingping3; Jiang, Quan3; Cao, Bei2; Jiang, Xiqing4; Xiong, Jiecheng4 |
| 刊名 | ENGINEERING FAILURE ANALYSIS
 |
| 出版日期 | 2024-06-01 |
| 卷号 | 160页码:23 |
| 关键词 | Weak interlayer zone High geostress Unloading condition Modified equivalent plastic work Constitutive model Numerical simulation |
| ISSN号 | 1350-6307 |
| DOI | 10.1016/j.engfailanal.2024.108179 |
| 英文摘要 | A simple yet innovative constitutive model of the weak interlayer zone (WIZ) is proposed to represent the unloading mechanical response and the failure mechanism of WIZ under complex unloading stress paths in underground excavation based on credible experimental results. The established model employs a modified equivalent plastic work with obvious stress path independency as the hardening parameter to appropriately interpret the effect of stress paths on the unloading plastic strain hardening characteristics of WIZ. Moreover, the deterioration of mechanical parameters with the hardening parameter is simultaneously explored. Additionally, the modified equivalent plastic work hardening constitutive model has been created with the aid of the updated Mogi-Coulomb yield criterion, associated flow rule for tensile failure, and nonassociated flow rule for shear failure, in order to accurately characterize the non-linear properties and significant dilation throughout the entire unloading conditions. The capability and rationality of the established model were then investigated and verified through the finite difference numerical algorithm by comparing several numeric examples with the laboratory unloading triaxial test results and the field deformation monitoring data. The model was then used to simulate and analyze the stability of rock masses with WIZ during the large underground cavern excavations. Results show that the model can effectively characterize the stress redistribution, the large discontinuous deformation of upper and lower rock masses of WIZ, as well as the structural stress -induced failures. The study can offer a crucial scientific foundation for appropriate construction and support optimization of underground engineering affected by WIZ. |
| 资助项目 | National Natural Science Foundation of China[52279114] ; National Natural Science Foundation of China[51909241] ; National Natural Science Foundation of China[52279117] ; National Natural Science Foundation of China[52008376] ; Young Elite Scientists Sponsorship Program by CAST[2023QNRC001] ; China Postdoctoral Science Foundation[2023T160200] ; Henan Province Science and Technology Innovation Talent Program[2023HYTP002] |
| WOS研究方向 | Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001198184700001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40967]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Xu, Dingping |
| 作者单位 | 1.Henan Urban Planning Inst & Corp, Zhengzhou 450044, Peoples R China 2.Shaanxi Publ Resources Trading Ctr, Xian 710000, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 4.Zhengzhou Univ, Sch Civil Engn, Zhengzhou 450001, Henan, Peoples R China 5.Yellow River Engn Consulting Co Ltd, Zhengzhou 450003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Duan, Shuqian,Wang, Hao,Gao, Po,et al. Constitutive modeling of weak interlayer zone subject to unloading stress paths in underground excavation based on modified equivalent plastic work[J]. ENGINEERING FAILURE ANALYSIS,2024,160:23. |
| APA | Duan, Shuqian.,Wang, Hao.,Gao, Po.,Xu, Dingping.,Jiang, Quan.,...&Xiong, Jiecheng.(2024).Constitutive modeling of weak interlayer zone subject to unloading stress paths in underground excavation based on modified equivalent plastic work.ENGINEERING FAILURE ANALYSIS,160,23. |
| MLA | Duan, Shuqian,et al."Constitutive modeling of weak interlayer zone subject to unloading stress paths in underground excavation based on modified equivalent plastic work".ENGINEERING FAILURE ANALYSIS 160(2024):23. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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