基于桩侧广义剪切模型的大直径超长灌注桩承载变形计算方法

李永辉; 王卫东; 吴江斌

doi:10.11779/CJGE201512004

基于桩侧广义剪切模型的大直径超长灌注桩承载变形计算方法 English Version

1. 郑州大学土木工程学院,河南郑州 450001;
2. 华东建筑设计研究总院,上海 200002

基金项目: 十二五国家科技支撑计划项目（2012BAJ01B02）; 国家自然科学基金项目（51508522）

详细信息

作者简介:
李永辉（1983- ）,男,工学博士,主要从事桩基工程研究与分析。E-mail: liyh109930@163.com。

计量
- 文章访问数: 0286
- HTML全文浏览量: 0
- PDF下载量: 0297
出版历程
- 收稿日期: 2014-09-09
- 发布日期: 2015-12-19

Bearing deformation of large-diameter and super-long bored piles based on pile shaft generalized shear model

1. College of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China;
2. East China Architectural Design & Research Institute, Shanghai 200002, China

摘要

摘要: 大直径超长灌注桩桩身变形较大,桩侧与土体易出现明显的界面滑移,传统剪切位移法难以适合其承载变形计算。基于大直径超长灌注桩桩-土剪切作用性状及桩侧摩阻力发挥特点,采用剪切位移和剪切滑移两阶段法描述其桩侧摩阻力发挥过程,形成桩侧广义剪切模型;在此基础上,采用传递矩阵增量方式建立大直径超长灌注桩承载变形计算方法,并给出计算参数的取值。该方法考虑了桩侧摩阻力发挥的非线性、桩端承载的非线性及桩身材料的非线性,并考虑了桩-土滑移后桩侧摩阻力软化特性及桩端后注浆对桩端承载性状的影响。工程实例计算结果与现场试桩实测值较为吻合,表明基于桩侧广义剪切模型建立的大直径超长灌注桩承载变形计算方法具有合理性与可行性。
- 大直径超长灌注桩 /
- 桩侧摩阻力 /
- 桩侧剪切模型 /
- 承载变形
Abstract: Because of large deformation of large-diameter and super long bored piles, pile soil slip is easy to appear in the pile shaft. Therefore, the traditional shear displacement method is not suitable for load deformation calculation of the piles. According to the shear characters of pile shaft and soils of the large-diameter and super long bored piles, the two-phase approach, shear displacement phase and shear slip phase, is adopted to describe the action process of pile shaft friction. On this account, a pile shaft generalized shear model is established. Then, the method of incremental transfer matrix is used for nonlinear iterative calculation of the pile load deformation. Moreover, values of the same calculating parameters are also given. For this pile load deformation method, nonlinear behaviors of pile shaft friction, pile tip resistance and pile shaft materials are considered. Besides, pile shaft friction softening property and pile tip post-grouted effect mechanism are also considered. Two engineering cases are calculated by the method. The calculated and measured results are very similar. It is shown that the proposed pile shaft generalized shear model and load deformation method for the large-diameter and super long bored piles are reasonable and feasible.
- large-diameter and super-long bored pile /
- pile shaft friction /
- pile shaft shear model /
- bearing deformation

HTML全文

参考文献(22)

[1]	张雁, 刘金波. 桩基手册[M]. 北京: 中国建筑工业出版社, 2009. (ZHANG Yan, LIU Jin-bo. Pile foundation handbook[M]. Beijing: China Architecture and Building Press, 2009. (in Chinese))
[2]	赵明华, 刘齐建, 曹喜仁, 等. 按桩顶沉降量控制超长灌注桩竖向承载力研究[J]. 工程力学, 2006, 23(2): 92-96. (ZHAO Ming-hua, LIU Qi-jian, CAO Xi-ren, et al. Evaluation of vertical bearing capacity of super-long bored single pile by the pile head settlement[J]. Engineering Mechanics, 2006, 23(2): 92-96. (in Chinese))
[3]	吴鹏, 龚维明, 梁书亭. 考虑深度效应的超长单桩荷载传递性状的研究[J]. 岩土力学, 2007, 28(6): 1265-1268. (WU Peng, GONG Wei-ming, LIANG Shu-ting. Study on load transfer law of overlength pile considering depth effect[J]. Rock and Soil Mechanics, 2007, 28(6): 1265-1268. (in Chinese))
[4]	闫静雅, 张子新, 黄宏伟, 等. 大直径超长钻孔灌注桩荷载传递分析[J]. 同济大学学报(自然科学版), 2007, 35(5): 592-596. (YAN Jing-ya, ZHANG Zi-xin, HUANG Hong-wei, et al. Analysis of load transfer behavior of large diameter bored piles[J]. Journal of Tongji University (Natural Science), 2007, 35(5): 592-596. (in Chinese))
[5]	王卫东, 李永辉, 吴江斌. 上海中心大厦大直径超长灌注桩现场试验研究[J]. 岩土工程学报, 2011, 33(12): 1817-1826. (WANG Wei-dong, LI Yong-hui, WU Jiang-bin. Field loading tests on large-diameter and super-long bored piles of Shanghai Center Tower[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(12): 1817-1826. (in Chinese))
[6]	张忠苗, 贺静漪, 张乾青, 等. 温州323 m超高层超长单桩与群桩基础实测沉降分析[J]. 岩土工程学报, 2010, 32(3): 330-337. (ZHANG Zhong-miao, HE Jing-yi, ZHANG Qian-qing, et al. Measured settlements of super-long piles and pile groups for a building of 323 m in height in Wenzhou[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(3): 330-337. (in Chinese))
[7]	李永辉, 王卫东, 黄茂松, 等. 超长灌注桩桩-土界面剪切试验研究[J]. 岩土力学, 2015, 36(7): 1981-1988. (LI Yong-hui, WANG Wei-dong, HUANG Mao-song, et al. Experimental study on pile-soil interface shear behaviors of super-long bored pile[J]. Rock and Soil Mechanics, 2015, 36(7): 1981-1988. (in Chinese))
[8]	RANDOLPH M F, WROTH C P. Analysis of deformation of vertically loaded piles[J]. Journal of the Geotechnical Engineering Division, ASCE, 1978, 104(12): 1465-1488.
[9]	COOKE R W, PRICE G, TARR K. Jacked piles in London Clay-interaction and group behavior under working conditions[J]. Géotechnique, 1997, 47(2): 97-136.
[10]	JGJ 94—2008建筑桩基技术规范[S]. 2008. (JGJ 94—2008 Technical code for building pile foundation[S]. 2008. (in Chinese))
[11]	FAHEY M, CARTER J P. A finite element study of the pressuremeter in sand using a nonlinear elastic plastic model[J]. Canadian Geotechnical Journal, 1993, 30(2): 348-362.
[12]	ZHU H, CHANG M F. Load transfer curves along bored piles considering modulus degradation[J]. Journal of Geotechnical and Geoenvironmental Engineering, ASCE, 2002, 128(9): 764-774.
[13]	POULOS H G, DAVIS E H. Pile foundation analysis and design[M]. New York: John Wiley and Sons, 1980.
[14]	马晔. 超长钻孔灌注桩桩基承载性能的研究[D]. 武汉:武汉理工大学, 2008. (MA Ye. Research on the bearing behavior of super-long drilled pile[D]. Wuhan: Wuhan University of Technology, 2008. (in Chinese))
[15]	YASUFUKU N, OCHIAI H, MAEDA Y. Geotechnical analysis of skin friction of cast-in-place piles[C]// Proceedings of the 14th International Conference on Soil Mechanics and Foundation Engineering. Hamburg, 1997: 921-924.
[16]	JAMIOLKOWSKI M, LANCELLOTTA R, PASQUALINI E. Discussion on “Scale effects of ultimate pile capacity”[J]. Journal of Geotechnical Engineering, ASCE, 1984, 110(8): 1156-1159.
[17]	BARRETT A J, WRENCH B P, LEGGE J D. Back analysis of test piles driven into estuarine sands[C]// Proceedings of the 11th International Conference on Soil Mechanics and Foundation Engineering, 1985: 1347-1352.
[18]	李广信. 高等土力学[M]. 北京: 清华大学出版社, 2004. (LI Guang-xin. Advanced soil mechanics[M]. Beijing: Tsinghua University Press, 2004. (in Chinese))
[19]	DUNCAN J M, BYANE P, WONG K S, et al. Strength, stress-strain and bulk modulus parameters for finite element analysis of stresses and movements in soil masses[R]. Berkeley: Report No.UCB/GT/80-01, College of Engineering Office of Research Service, University of California, 1980.
[20]	张学言, 闫澍旺. 岩土塑性力学基础[M]. 天津: 天津大学出版社, 1994. (ZHANG Xue-yan, YAN Shu-wang. Basis of geotechnical plastic mechanics[M]. Tianjin: Tianjin University Press, 1994. (in Chinese))
[21]	钱家欢. 土力学[M]. 南京: 河海大学出版社, 1990. (QIAN Jia-huan. Soil mechanics[M]. Nanjing: Hohai University Press, 1990. (in Chinese))
[22]	王卫东, 李永辉, 吴江斌. 超长灌注桩桩-土界面剪切模型及其有限元模拟[J]. 岩土力学, 2012, 33(12): 3818-3824. (WANG Wei-dong, LI Yong-hui, WU Jiang-bin. Pile-soil interface shear model of super long bored pile and its FEM simulation[J]. Rock and Soil Mechanics, 2012, 33(12): 3818-3824. (in Chinese))

施引文献(34)

期刊类型引用(17)

1.	任连伟，王书彪，孔纲强，杨权威，邓岳保. 综合管廊始发井能源支护桩热力响应现场试验. 岩土力学. 2025(02): 573-581+612 . 百度学术
2.	吴行州. 基坑围护桩作用下地层支护应力分析及应用. 城市轨道交通研究. 2024(03): 125-129+134 . 百度学术
3.	赵鹏，张东海，李晓昭，张古彬，寇亚飞，高蓬辉. 基于p阶线性模型的地埋管换热器流体温度分布研究. 太阳能学报. 2024(06): 51-59 . 百度学术
4.	马奇杰，周超. 非对称循环温度荷载下2×2能源群桩倾斜性状离心机试验研究. 岩土工程学报. 2024(10): 2158-2165 . 本站查看
5.	唐丽云，邵海涛，唐华明，邱培勇，杜晓奇，张蕾，彭惠. 寒区道路桥梁融雪除冰技术研究综述. 中外公路. 2024(05): 25-38 . 百度学术
6.	谢金利，覃英宏，李颖鹏，蒙相霖，谭康豪，张星月. 能源桩传热特性与热-力响应研究综述. 土木与环境工程学报(中英文). 2023(01): 155-166 . 百度学术
7.	刘春阳，方鹏飞，张日红，谢新宇，娄扬，张秋善，朱大勇. 考虑间歇比的地热能源桩热-力性能试验研究. 浙江大学学报(工学版). 2023(03): 562-572 . 百度学术
8.	周杨，孔纲强，李俊杰. 夏季工况下扩底能量桩单桩热力学响应分析. 中国公路学报. 2023(05): 65-74 . 百度学术
9.	韩志攀，贾新聪，王晓超，牛彦平. 建筑墙体碳排放优化及减碳分析. 建筑结构. 2023(S1): 2356-2360 . 百度学术
10.	陈玉，孔纲强，孟永东，王乐华，刘红程. 间歇与持续加热下含承台能量桩基础现场试验. 深圳大学学报(理工版). 2022(01): 75-84 . 百度学术
11.	陈树森，赵蕾. 能源群桩与单桩热-力学响应特性对比分析. 地下空间与工程学报. 2022(03): 788-800 . 百度学术
12.	吕成钊. 四种保温墙体的动态热响应特性测试. 建筑节能(中英文). 2022(08): 48-51 . 百度学术
13.	任连伟，韩志攀，霍继炜，高宇甲. 桩顶约束下桥梁大直径能量桩热力响应现场试验. 防灾减灾工程学报. 2022(05): 937-944+960 . 百度学术
14.	陈鑫，孔纲强，刘汉龙，江强，杨挺. 桥面融雪除冰能量桩热泵系统换热效率现场试验. 中国公路学报. 2022(11): 107-115 . 百度学术
15.	张精兵，杨军兵，肖勇，海迪，陈智. 深层埋管式能源支护桩埋管形式与换热特性研究. 建筑结构. 2022(S2): 2515-2522 . 百度学术
16.	任连伟，任军洋，孔纲强，刘汉龙. 冷热循环下PHC能量桩热力响应和承载性能现场试验. 岩土力学. 2021(02): 529-536+546 . 百度学术
17.	孟甲. 钢管桩单桩涂料防腐施工质量管控方式探讨. 珠江水运. 2021(05): 59-60 . 百度学术