[1]吴军,万再新,沈大庆,等.基于有限差分的银川地区大直径灌注桩承载性状研究[J].西安建筑科技大学学报(自然科学版),2021,53(04):545-551.[doi:10.15986/j.1006-7930.2021.04.011]
　WU Jun,WAN Zaixin,SHEN Daqing,et al.Study on bearing behavior of large diameter bored piles in Yinchuan area based on finite difference[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2021,53(04):545-551.[doi:10.15986/j.1006-7930.2021.04.011]
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基于有限差分的银川地区大直径灌注桩承载性状研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
53
期数:
2021年04期
页码:
545-551
栏目:
出版日期:
2021-08-28

文章信息/Info

Title:
Study on bearing behavior of large diameter bored piles in Yinchuan area based on finite difference
文章编号:
1006-7930(2021)04-0545-07
作者:
吴军1; 万再新2; 沈大庆2; 赵威威2; 王晓峰2
(1.中国铁路西安局集团有限公司,陕西 西安 710054; 2.机械工业勘察设计研究院有限公司,陕西 西安 710043)
Author(s):
WU Jun1; WAN Zaixin2; SHEN Daqing2; ZHAO Weiwei2; WANG Xiaofeng2
(1.China Railway Xi’an Bureau Group Co.,Ltd,Xi’an 710054,China; 2.China JiKan Institute of Engineering Investigations and Design,Co.,Ltd,Xi’an 710043,China)
关键词:
大直径灌注桩;  滑动测微计;  桩承载性状;  数值模拟
Keywords:
large diameter bored pile;  sliding micrometer;  bearing capacity of the pile;  numerical simulation
分类号:
TU45
DOI:
10.15986/j.1006-7930.2021.04.011
文献标志码:
A
摘要:
针对现场采用静载法测试桩身内力和变形,往往不能得到破坏时真实数据这一问题.本文以银川市某工程为背景,现场静载试验采用锚桩法提供反力,滑动测微计测试桩身内力和变形,并与数值计算结果进行对比分析.结果表明:极限荷载作用下桩体压缩变形量接近桩顶沉降的一半; 在承载力特征值作用下可以忽略端阻力的贡献; 提出在极限荷载下桩身侧阻力和端阻力的建议值; 验证了数值模拟的可靠性并一定程度上弥补现场静载试验数据不足的问题.研究结论对银川地区桩基设计具有一定的参考价值.
Abstract:
In view of the problem that the real data of the damaged pile cannot be obtained when the static load method is used to test the internal force and deformation of the pile in the field,this study,based on the background of a project in Yinchuan,uses anchor pile method to provide reaction force in the field static load test,and sliding micrometer to test the internal force and deformation of the pile,and then the test results are compared with the numerical calculation results. The study shows that the compression deformation of pile under ultimate load is close to half of pile top settlement,and the contribution of end resistance can be ignored under the action of characteristic value of bearing capacity. The study also proposes the suggested values of pile side resistance and end resistance under ultimate load,verifies the reliability of numerical simulation and to a certain extent makes up for the lack of on-site static load test data. The research conclusion has a certain reference value for the design of pile foundation in Yinchuan area.

参考文献/References:

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(编辑 桂智刚)

备注/Memo

备注/Memo:
收稿日期:2021-01-09 修改稿日期:2021-07-05
基金项目:陕西省科技统筹创新项目(2015KTCG01-08)
第一作者:吴军(1969-),男,工程师,主要从事工程项目的质量管理工作.E-mail:569939240@qq.com
更新日期/Last Update: 2021-08-28