Stability Analysis and Parameter Optimization of Deep Excavation Supporting System in Granular Soils
Deep excavations are prone to result in excessive ground surface settlement displacement of surrounding existing structures, which could cause severe economic damage, even casualties. Hence, the optimization of pile parameters and evaluation of the stability of the excavation are of paramount import...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8873655 |
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| author | Manman Dong Pengjiao Jia |
| author_facet | Manman Dong Pengjiao Jia |
| author_sort | Manman Dong |
| collection | DOAJ |
| description | Deep excavations are prone to result in excessive ground surface settlement displacement of surrounding existing structures, which could cause severe economic damage, even casualties. Hence, the optimization of pile parameters and evaluation of the stability of the excavation are of paramount importance. This paper aims to evaluate the security of deep excavation and optimize the parameters of supported piles in granular soils. An excavation case in granular soils is used to evaluate the stability of deep excavation using displacement least squares method. The stability of case history, Changqingqiao subway station, using pile and inner support system is evaluated by using the least square method. Subsequently, the finite element method is used to optimize the critical parameters of the supported piles, and it needs to be emphasized that the correctness and reasonability of the finite element (FE) models are evaluated according to field measurements. The optimum pile diameter and embedment ratio for single- and double-row retaining pile are 1.0 m and 0.4. The maximum vertical displacement of surrounding soil and horizontal displacement of piles can be calculated by the equations obtained in this research which can provide useful guidance for the designing of deep excavation. |
| format | Article |
| id | doaj-art-ff9569715a3c4a61a55d12c0102ba28d |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-ff9569715a3c4a61a55d12c0102ba28d2025-08-20T03:25:55ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88736558873655Stability Analysis and Parameter Optimization of Deep Excavation Supporting System in Granular SoilsManman Dong0Pengjiao Jia1Faculty of Engineering, China University of Geosciences, Wuhan, Hubei, ChinaSchool of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaDeep excavations are prone to result in excessive ground surface settlement displacement of surrounding existing structures, which could cause severe economic damage, even casualties. Hence, the optimization of pile parameters and evaluation of the stability of the excavation are of paramount importance. This paper aims to evaluate the security of deep excavation and optimize the parameters of supported piles in granular soils. An excavation case in granular soils is used to evaluate the stability of deep excavation using displacement least squares method. The stability of case history, Changqingqiao subway station, using pile and inner support system is evaluated by using the least square method. Subsequently, the finite element method is used to optimize the critical parameters of the supported piles, and it needs to be emphasized that the correctness and reasonability of the finite element (FE) models are evaluated according to field measurements. The optimum pile diameter and embedment ratio for single- and double-row retaining pile are 1.0 m and 0.4. The maximum vertical displacement of surrounding soil and horizontal displacement of piles can be calculated by the equations obtained in this research which can provide useful guidance for the designing of deep excavation.http://dx.doi.org/10.1155/2020/8873655 |
| spellingShingle | Manman Dong Pengjiao Jia Stability Analysis and Parameter Optimization of Deep Excavation Supporting System in Granular Soils Advances in Civil Engineering |
| title | Stability Analysis and Parameter Optimization of Deep Excavation Supporting System in Granular Soils |
| title_full | Stability Analysis and Parameter Optimization of Deep Excavation Supporting System in Granular Soils |
| title_fullStr | Stability Analysis and Parameter Optimization of Deep Excavation Supporting System in Granular Soils |
| title_full_unstemmed | Stability Analysis and Parameter Optimization of Deep Excavation Supporting System in Granular Soils |
| title_short | Stability Analysis and Parameter Optimization of Deep Excavation Supporting System in Granular Soils |
| title_sort | stability analysis and parameter optimization of deep excavation supporting system in granular soils |
| url | http://dx.doi.org/10.1155/2020/8873655 |
| work_keys_str_mv | AT manmandong stabilityanalysisandparameteroptimizationofdeepexcavationsupportingsystemingranularsoils AT pengjiaojia stabilityanalysisandparameteroptimizationofdeepexcavationsupportingsystemingranularsoils |