Elastoplastic Analysis for Circular Tunnel Based on Modified Lade Criterion considering Strain Softening and Dilatancy
Modified Lade criterion can not only describe the strength properties of many kinds of rocks well but also has simple and practical parameters. Although the elastoplastic solution of circular tunnel has been extensively investigated, the method based on modified Lade criterion considering the effect...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/4872558 |
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| author | Yansheng Deng Jianxiu Wang Baoping Zou |
| author_facet | Yansheng Deng Jianxiu Wang Baoping Zou |
| author_sort | Yansheng Deng |
| collection | DOAJ |
| description | Modified Lade criterion can not only describe the strength properties of many kinds of rocks well but also has simple and practical parameters. Although the elastoplastic solution of circular tunnel has been extensively investigated, the method based on modified Lade criterion considering the effect of the intermediate principal stress, strain-softening behavior, and dilatancy has not yet been studied. In this paper, a new numerical procedure based on modified Lade criterion is proposed to calculate the elastoplastic solutions for surrounding rock of the circular tunnel. The comparisons of stress, displacement, and plastic zone radius are carried out between the presented method and published literatures under axisymmetric and nonaxisymmetric original in situ stress field. Finally, a series of parametric analyses are executed and discussed. It can be concluded that the lateral pressure coefficient, λ, influences both the size of plastic zone and the development direction. The plastic zone radius shows a negative power function change with increasing critical deviatoric plastic strain and increases slightly with increasing dilation angle, ψ. |
| format | Article |
| id | doaj-art-2d64e8559a4547cfb8bd4f616309917e |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-2d64e8559a4547cfb8bd4f616309917e2025-02-03T01:24:54ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/48725584872558Elastoplastic Analysis for Circular Tunnel Based on Modified Lade Criterion considering Strain Softening and DilatancyYansheng Deng0Jianxiu Wang1Baoping Zou2School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou 310023, ChinaCollege of Civil Engineering, Tongji University, Shanghai 200092, ChinaSchool of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou 310023, ChinaModified Lade criterion can not only describe the strength properties of many kinds of rocks well but also has simple and practical parameters. Although the elastoplastic solution of circular tunnel has been extensively investigated, the method based on modified Lade criterion considering the effect of the intermediate principal stress, strain-softening behavior, and dilatancy has not yet been studied. In this paper, a new numerical procedure based on modified Lade criterion is proposed to calculate the elastoplastic solutions for surrounding rock of the circular tunnel. The comparisons of stress, displacement, and plastic zone radius are carried out between the presented method and published literatures under axisymmetric and nonaxisymmetric original in situ stress field. Finally, a series of parametric analyses are executed and discussed. It can be concluded that the lateral pressure coefficient, λ, influences both the size of plastic zone and the development direction. The plastic zone radius shows a negative power function change with increasing critical deviatoric plastic strain and increases slightly with increasing dilation angle, ψ.http://dx.doi.org/10.1155/2021/4872558 |
| spellingShingle | Yansheng Deng Jianxiu Wang Baoping Zou Elastoplastic Analysis for Circular Tunnel Based on Modified Lade Criterion considering Strain Softening and Dilatancy Advances in Civil Engineering |
| title | Elastoplastic Analysis for Circular Tunnel Based on Modified Lade Criterion considering Strain Softening and Dilatancy |
| title_full | Elastoplastic Analysis for Circular Tunnel Based on Modified Lade Criterion considering Strain Softening and Dilatancy |
| title_fullStr | Elastoplastic Analysis for Circular Tunnel Based on Modified Lade Criterion considering Strain Softening and Dilatancy |
| title_full_unstemmed | Elastoplastic Analysis for Circular Tunnel Based on Modified Lade Criterion considering Strain Softening and Dilatancy |
| title_short | Elastoplastic Analysis for Circular Tunnel Based on Modified Lade Criterion considering Strain Softening and Dilatancy |
| title_sort | elastoplastic analysis for circular tunnel based on modified lade criterion considering strain softening and dilatancy |
| url | http://dx.doi.org/10.1155/2021/4872558 |
| work_keys_str_mv | AT yanshengdeng elastoplasticanalysisforcirculartunnelbasedonmodifiedladecriterionconsideringstrainsofteninganddilatancy AT jianxiuwang elastoplasticanalysisforcirculartunnelbasedonmodifiedladecriterionconsideringstrainsofteninganddilatancy AT baopingzou elastoplasticanalysisforcirculartunnelbasedonmodifiedladecriterionconsideringstrainsofteninganddilatancy |