Settlement calculation of rock-socketed piles considering softening characteristics of pile-rock bonded interface

被引：0
作者：
Liu Y. [1 ,2 ]
Zhou C. [1 ]
Zhou J. [1 ]
Lü G. [1 ]
机构：
[1] Faculty of Engineering, China University of Geosciences (Wuhan), Wuhan
[2] Wuhan Geotechnical Engineering and Surveying Co. Ltd., Wuhan
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2022年 / 53卷 / 11期
基金：
中国国家自然科学基金;
关键词：
bond; load-transfer; rock-socketed piles; settlement; side resistance;
D O I：
10.11817/j.issn.1672-7207.2022.11.020
中图分类号：
学科分类号：
摘要：
The multi-piecewise bonding(MPB) model for pile-rock bonded interface was proposed on the basis of the shear tests results of concrete-rock bonded samples and compared with the existing hyperbolic model and generalized nonlinear softening model. The value of model parameters was determined The iterative computer program based on these three models was developed for analysis of load-settlement calculation. The program rationality was verified by the documented field tests data with different geologic formations. The results show that the proposed MPB model is more suitable for load transfer calculation of rock-socketed piles with large proportion or complete rock-socketed piles. The ultimate relative pile-rock displacement shows a higher irregular effect on load-settlement curves in MPB model than the other two models. Residual ratio of side resistance has the increased effect on load-settlement curves with increasingly external axial load. The settlement calculated by the proposed model increases when the residual ratio of side resistance decreases. © 2022 Central South University of Technology. All rights reserved.
引用
收藏
页码：4401 / 4411
页数：10
相关论文
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