Horizontal bearing characteristics of near-fault single pile based on centrifugal model test

被引：0
|
作者：
Zhang C. [1 ]
Feng Z.-J. [1 ]
Wang F.-C. [1 ]
Guan Y.-H. [2 ]
Zhang F.-Q. [3 ]
机构：
[1] Highway School, Chang’an University, Xi’an
[2] SCEGC Mechanized Construction Group Limited Company, Xi’an
[3] Hainan Province Transportation Hall, Haikou
来源：
Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2023年 / 57卷 / 03期
关键词：
centrifugal model test; fault; horizontal bearing characteristics; pile foundation; single pile;
D O I：
10.3785/j.issn.1008-973X.2023.03.012
中图分类号：
学科分类号：
摘要：
In order to explore the horizontal bearing characteristics and stress mechanism of bridge pile foundations in fault development areas, through the geotechnical centrifugal model test, the selected variables were horizontal distance between the fault and the pile foundation, and the buried depth of the fault . The variation rules of horizontal ultimate bearing capacity, pile side soil resistance, pile bending moment, and pile shear force of a single pile near-fault bridge were studied. Test results show that the existence of faults inhibits the development of soil resistance on the side of the pile, and affects the horizontal bearing characteristics of a single pile. When the horizontal distance between the fault and the pile foundation increased from 1 to 5 times the pile diameter, the influence degree of the horizontal ultimate bearing capacity of the single pile on both sides of the fault was 1.38%－61.47%. The bending moment of the pile decreased gradually and attenuated rapidly, and the shearing force of the pile decreased gradually. When the buried depth of the fault was reduced from 0 cm to 28 cm, the influence degree of the horizontal ultimate bearing capacity of the single pile on both sides of the fault was 13.07%－ 51.60%. In the design of horizontal bearing capacity of the single pile near-fault, the critical value of the horizontal distance between fault and pile foundation and reasonable pile length can be determined according to the range of rock and soil affected by the fault. © 2023 Zhejiang University. All rights reserved.
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页码：542 / 551
页数：9
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