Bearing Capacity and Deformation of Micropiles Considering Plastic Hinge
This study systematically investigates the plastic deformation behavior and load-bearing mechanisms of micropiles through integrated scaled physical modeling and nonlinear finite element analysis, with particular emphasis on quantifying plastic hinge characteristics. The development of plastic defor...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-04-01
|
| Series: | Buildings |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-5309/15/7/1168 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849730829797818368 |
|---|---|
| author | Yipaliya Abuduweili Li Ma Kaixin Shi Xinlin Zhu |
| author_facet | Yipaliya Abuduweili Li Ma Kaixin Shi Xinlin Zhu |
| author_sort | Yipaliya Abuduweili |
| collection | DOAJ |
| description | This study systematically investigates the plastic deformation behavior and load-bearing mechanisms of micropiles through integrated scaled physical modeling and nonlinear finite element analysis, with particular emphasis on quantifying plastic hinge characteristics. The development of plastic deformation in laterally loaded micropiles was analytically described using plastic hinge theory, complemented by experimental-numerical validation. The key findings demonstrate the following points. (1) Existing empirical formulas for plastic hinge length, based on sectional parameters, show significant discrepancies, with experimental calibration establishing an optimized length of 2D. (2) Parametric FEM studies of three diameter groups (3–7% longitudinal reinforcement ratio) reveal that cross-sectional geometry and reinforcement configuration collectively govern nonlinear ultimate capacity, where ≤0.1% reinforcement ratio variation induces <5% bearing capacity deviation. (3) Square sections exhibit 12–18% higher capacity than circular equivalents of the equivalent dimensions, with this advantage amplifying with increasing pile size. (4) While excessive reinforcement ratios (>6%) impair structural performance, emergent scale effects effectively mitigate associated capacity reduction. These findings provide critical insights for optimizing micropile design in geotechnical applications through coordinated consideration of geometric, material, and scale parameters. |
| format | Article |
| id | doaj-art-777bb47fa5434a1d9fa4167abbec430e |
| institution | DOAJ |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-777bb47fa5434a1d9fa4167abbec430e2025-08-20T03:08:44ZengMDPI AGBuildings2075-53092025-04-01157116810.3390/buildings15071168Bearing Capacity and Deformation of Micropiles Considering Plastic HingeYipaliya Abuduweili0Li Ma1Kaixin Shi2Xinlin Zhu3CSCEC Xinjiang Civil Engineering Co., Ltd., Urumqi 830054, ChinaCollege of Architecture and Civil Engineering, Xinjiang University, Urumqi 830017, ChinaCollege of Architecture and Civil Engineering, Xinjiang University, Urumqi 830017, ChinaCollege of Architecture and Civil Engineering, Xinjiang University, Urumqi 830017, ChinaThis study systematically investigates the plastic deformation behavior and load-bearing mechanisms of micropiles through integrated scaled physical modeling and nonlinear finite element analysis, with particular emphasis on quantifying plastic hinge characteristics. The development of plastic deformation in laterally loaded micropiles was analytically described using plastic hinge theory, complemented by experimental-numerical validation. The key findings demonstrate the following points. (1) Existing empirical formulas for plastic hinge length, based on sectional parameters, show significant discrepancies, with experimental calibration establishing an optimized length of 2D. (2) Parametric FEM studies of three diameter groups (3–7% longitudinal reinforcement ratio) reveal that cross-sectional geometry and reinforcement configuration collectively govern nonlinear ultimate capacity, where ≤0.1% reinforcement ratio variation induces <5% bearing capacity deviation. (3) Square sections exhibit 12–18% higher capacity than circular equivalents of the equivalent dimensions, with this advantage amplifying with increasing pile size. (4) While excessive reinforcement ratios (>6%) impair structural performance, emergent scale effects effectively mitigate associated capacity reduction. These findings provide critical insights for optimizing micropile design in geotechnical applications through coordinated consideration of geometric, material, and scale parameters.https://www.mdpi.com/2075-5309/15/7/1168micropilesplastic hingedeformationbearing capacityplastic hinge length |
| spellingShingle | Yipaliya Abuduweili Li Ma Kaixin Shi Xinlin Zhu Bearing Capacity and Deformation of Micropiles Considering Plastic Hinge Buildings micropiles plastic hinge deformation bearing capacity plastic hinge length |
| title | Bearing Capacity and Deformation of Micropiles Considering Plastic Hinge |
| title_full | Bearing Capacity and Deformation of Micropiles Considering Plastic Hinge |
| title_fullStr | Bearing Capacity and Deformation of Micropiles Considering Plastic Hinge |
| title_full_unstemmed | Bearing Capacity and Deformation of Micropiles Considering Plastic Hinge |
| title_short | Bearing Capacity and Deformation of Micropiles Considering Plastic Hinge |
| title_sort | bearing capacity and deformation of micropiles considering plastic hinge |
| topic | micropiles plastic hinge deformation bearing capacity plastic hinge length |
| url | https://www.mdpi.com/2075-5309/15/7/1168 |
| work_keys_str_mv | AT yipaliyaabuduweili bearingcapacityanddeformationofmicropilesconsideringplastichinge AT lima bearingcapacityanddeformationofmicropilesconsideringplastichinge AT kaixinshi bearingcapacityanddeformationofmicropilesconsideringplastichinge AT xinlinzhu bearingcapacityanddeformationofmicropilesconsideringplastichinge |