Effect of Newly Built Embankments on Existing Bridge Piles Passing through Beaded Karst Caves
Publication: International Journal of Geomechanics
Volume 24, Issue 6
Abstract
This study was part of a preliminary safety assessment for a real project of existing bridge piles passing through beaded karst caves threatened by a nearby newly built embankment. To investigate the severity of the effect of the embankment on the performance of these piles, a series of reduced-scale model experiments of piles considering different cave numbers (n = 0, 1, 2, and 3) near surcharge loads were designed with a similarity ratio of 1:35. Two phases of loading, the vertical loading atop the pile and nearby surcharge loading, were imposed successively to explore the vertical bearing characteristic and lateral response characteristic of the piles passing through beaded karst caves. The effects of cave number, vertical load atop the pile, and nearby surcharge load on the responses of pile and soil were clarified and several fitting functions were presented to characterize the variations of responses with different cave numbers and nearby surcharge loads. The results and conclusions can provide a reference for the design and safety assessment of bridge piles in karst terrains.
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Data Availability Statement
Some or all data, models, or codes that support the findings of this study are available from the corresponding author upon reasonable request including the data in the graph and the code of calculation.
Acknowledgments
This research is part of work supported by grants from the National Natural Science Foundation of China (No. 52108317), the Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences (No. SKLGME022016), the Hunan Provincial Natural Science Foundation of China (Nos. 2022JJ40074, 2020JJ4619), and the Postgraduate Scientific Research Innovation Project of Hunan Province (No. CX20200835).
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Published In
International Journal of Geomechanics
Volume 24 • Issue 6 • June 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Jun 20, 2022
Accepted: Jan 4, 2024
Published online: Apr 10, 2024
Published in print: Jun 1, 2024
Discussion open until: Sep 10, 2024
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