Prediction of Response of Existing Building Piles to Adjacent Deep Excavation in Soft Clay
This study investigates building settlements near excavations in soft clay. A simplified theoretical method is proposed to predict the additional settlements and axial forces of excavation-adjacent existing building floating piles in soft clay. The soil displacement is simplified as a line or broken...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/8914708 |
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| _version_ | 1832554645167276032 |
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| author | Yao-Ying Liang Nian-Wu Liu Feng Yu Xiao-Nan Gong Yi-Tian Chen |
| author_facet | Yao-Ying Liang Nian-Wu Liu Feng Yu Xiao-Nan Gong Yi-Tian Chen |
| author_sort | Yao-Ying Liang |
| collection | DOAJ |
| description | This study investigates building settlements near excavations in soft clay. A simplified theoretical method is proposed to predict the additional settlements and axial forces of excavation-adjacent existing building floating piles in soft clay. The soil displacement is simplified as a line or broken line along the depth direction, depending on the distance from the excavation. A hyperbolic model is applied to calculate the skin friction and tip resistance induced by the vertical soil displacement. The parameters of the hyperbolic model are corrected to fit data from in-service piles. Based on the load-transfer curve method, the additional settlements and axial forces are determined. The measured data of 17 floating piles from two excavation cases in Hangzhou, China, show good agreement with the calculated values. The results show that the position of the neutral point of the loaded pile varies with the soil settlement. Because of the upper structure, the theoretical settlements for piles near the excavation are larger than those obtained from the measured values; for distant piles, this relationship is reversed. The proposed prediction methodology is expected to guide the design of practical excavations. |
| format | Article |
| id | doaj-art-883e7e0b849c4ffca6089d6c1a5658f7 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-883e7e0b849c4ffca6089d6c1a5658f72025-02-03T05:50:54ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/89147088914708Prediction of Response of Existing Building Piles to Adjacent Deep Excavation in Soft ClayYao-Ying Liang0Nian-Wu Liu1Feng Yu2Xiao-Nan Gong3Yi-Tian Chen4Institute of Foundation and Structure Technologies, Zhejiang Sci-Tech University, Hangzhou 310018, ChinaInstitute of Foundation and Structure Technologies, Zhejiang Sci-Tech University, Hangzhou 310018, ChinaInstitute of Foundation and Structure Technologies, Zhejiang Sci-Tech University, Hangzhou 310018, ChinaResearch Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou 310058, ChinaInstitute of Foundation and Structure Technologies, Zhejiang Sci-Tech University, Hangzhou 310018, ChinaThis study investigates building settlements near excavations in soft clay. A simplified theoretical method is proposed to predict the additional settlements and axial forces of excavation-adjacent existing building floating piles in soft clay. The soil displacement is simplified as a line or broken line along the depth direction, depending on the distance from the excavation. A hyperbolic model is applied to calculate the skin friction and tip resistance induced by the vertical soil displacement. The parameters of the hyperbolic model are corrected to fit data from in-service piles. Based on the load-transfer curve method, the additional settlements and axial forces are determined. The measured data of 17 floating piles from two excavation cases in Hangzhou, China, show good agreement with the calculated values. The results show that the position of the neutral point of the loaded pile varies with the soil settlement. Because of the upper structure, the theoretical settlements for piles near the excavation are larger than those obtained from the measured values; for distant piles, this relationship is reversed. The proposed prediction methodology is expected to guide the design of practical excavations.http://dx.doi.org/10.1155/2019/8914708 |
| spellingShingle | Yao-Ying Liang Nian-Wu Liu Feng Yu Xiao-Nan Gong Yi-Tian Chen Prediction of Response of Existing Building Piles to Adjacent Deep Excavation in Soft Clay Advances in Civil Engineering |
| title | Prediction of Response of Existing Building Piles to Adjacent Deep Excavation in Soft Clay |
| title_full | Prediction of Response of Existing Building Piles to Adjacent Deep Excavation in Soft Clay |
| title_fullStr | Prediction of Response of Existing Building Piles to Adjacent Deep Excavation in Soft Clay |
| title_full_unstemmed | Prediction of Response of Existing Building Piles to Adjacent Deep Excavation in Soft Clay |
| title_short | Prediction of Response of Existing Building Piles to Adjacent Deep Excavation in Soft Clay |
| title_sort | prediction of response of existing building piles to adjacent deep excavation in soft clay |
| url | http://dx.doi.org/10.1155/2019/8914708 |
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