A Mindlin-Based Improved Newmark Method for the Seismic Stability of Anchored Slopes with Group Anchor Effects
As the lifespan of many anchored slope reinforcements in China approaches its end, there is an increased need for secondary reinforcement. This study addresses the interaction between new and existing anchors, a critical but challenging aspect. The study introduces the Anchor Rod Modified Newmark Sl...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-04-01
|
| Series: | Buildings |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-5309/15/8/1242 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849712500055998464 |
|---|---|
| author | Xuegang Pan Jinqing Jia Shiyuan Ju |
| author_facet | Xuegang Pan Jinqing Jia Shiyuan Ju |
| author_sort | Xuegang Pan |
| collection | DOAJ |
| description | As the lifespan of many anchored slope reinforcements in China approaches its end, there is an increased need for secondary reinforcement. This study addresses the interaction between new and existing anchors, a critical but challenging aspect. The study introduces the Anchor Rod Modified Newmark Sliding Block Method (AMNB), which enhances the traditional Newmark Sliding Block Method (NSBM) by incorporating maximum anchor rod tension, dynamic tension changes, and group anchor effects. This improvement enhances the prediction of seismic displacement in slopes with multiple anchors. The AMNB method represents an innovation in slope stability analysis, as it is the first to integrate these dynamic and interactive factors into a unified framework. Validation through comparison with established seismic permanent displacement calculations and the analysis of three typical seismic motions show the AMNB’s effectiveness in capturing dynamic behaviors under seismic excitation. Additionally, numerical simulations using FLAC3D were conducted to validate the proposed method. The results indicate that considering group anchor effects and dynamic tension changes reduces the predicted seismic permanent displacement by up to 10% compared to traditional methods. The proposed AMNB method aligns more closely with the numerical simulation results. The findings indicate that group anchor effects negatively impact anchor forces, dynamic yield accelerations, and seismic displacements, leading to lower anchor tensions and dynamic yield accelerations. This, in turn, results in larger final slope permanent displacements under the same conditions. |
| format | Article |
| id | doaj-art-59e018e7979046aaaeb565cece7edf9d |
| institution | DOAJ |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-59e018e7979046aaaeb565cece7edf9d2025-08-20T03:14:15ZengMDPI AGBuildings2075-53092025-04-01158124210.3390/buildings15081242A Mindlin-Based Improved Newmark Method for the Seismic Stability of Anchored Slopes with Group Anchor EffectsXuegang Pan0Jinqing Jia1Shiyuan Ju2State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, ChinaState Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, ChinaState Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, ChinaAs the lifespan of many anchored slope reinforcements in China approaches its end, there is an increased need for secondary reinforcement. This study addresses the interaction between new and existing anchors, a critical but challenging aspect. The study introduces the Anchor Rod Modified Newmark Sliding Block Method (AMNB), which enhances the traditional Newmark Sliding Block Method (NSBM) by incorporating maximum anchor rod tension, dynamic tension changes, and group anchor effects. This improvement enhances the prediction of seismic displacement in slopes with multiple anchors. The AMNB method represents an innovation in slope stability analysis, as it is the first to integrate these dynamic and interactive factors into a unified framework. Validation through comparison with established seismic permanent displacement calculations and the analysis of three typical seismic motions show the AMNB’s effectiveness in capturing dynamic behaviors under seismic excitation. Additionally, numerical simulations using FLAC3D were conducted to validate the proposed method. The results indicate that considering group anchor effects and dynamic tension changes reduces the predicted seismic permanent displacement by up to 10% compared to traditional methods. The proposed AMNB method aligns more closely with the numerical simulation results. The findings indicate that group anchor effects negatively impact anchor forces, dynamic yield accelerations, and seismic displacements, leading to lower anchor tensions and dynamic yield accelerations. This, in turn, results in larger final slope permanent displacements under the same conditions.https://www.mdpi.com/2075-5309/15/8/1242multi-anchored slopesearthquake engineeringdynamic tension changesgroup anchor effectAnchor Rod Modified Newmark Sliding Block Method |
| spellingShingle | Xuegang Pan Jinqing Jia Shiyuan Ju A Mindlin-Based Improved Newmark Method for the Seismic Stability of Anchored Slopes with Group Anchor Effects Buildings multi-anchored slopes earthquake engineering dynamic tension changes group anchor effect Anchor Rod Modified Newmark Sliding Block Method |
| title | A Mindlin-Based Improved Newmark Method for the Seismic Stability of Anchored Slopes with Group Anchor Effects |
| title_full | A Mindlin-Based Improved Newmark Method for the Seismic Stability of Anchored Slopes with Group Anchor Effects |
| title_fullStr | A Mindlin-Based Improved Newmark Method for the Seismic Stability of Anchored Slopes with Group Anchor Effects |
| title_full_unstemmed | A Mindlin-Based Improved Newmark Method for the Seismic Stability of Anchored Slopes with Group Anchor Effects |
| title_short | A Mindlin-Based Improved Newmark Method for the Seismic Stability of Anchored Slopes with Group Anchor Effects |
| title_sort | mindlin based improved newmark method for the seismic stability of anchored slopes with group anchor effects |
| topic | multi-anchored slopes earthquake engineering dynamic tension changes group anchor effect Anchor Rod Modified Newmark Sliding Block Method |
| url | https://www.mdpi.com/2075-5309/15/8/1242 |
| work_keys_str_mv | AT xuegangpan amindlinbasedimprovednewmarkmethodfortheseismicstabilityofanchoredslopeswithgroupanchoreffects AT jinqingjia amindlinbasedimprovednewmarkmethodfortheseismicstabilityofanchoredslopeswithgroupanchoreffects AT shiyuanju amindlinbasedimprovednewmarkmethodfortheseismicstabilityofanchoredslopeswithgroupanchoreffects AT xuegangpan mindlinbasedimprovednewmarkmethodfortheseismicstabilityofanchoredslopeswithgroupanchoreffects AT jinqingjia mindlinbasedimprovednewmarkmethodfortheseismicstabilityofanchoredslopeswithgroupanchoreffects AT shiyuanju mindlinbasedimprovednewmarkmethodfortheseismicstabilityofanchoredslopeswithgroupanchoreffects |