[1]张 奎,韩晓雷.黄土地层微型桩水平承载力研究[J].西安建筑科技大学学报：自然版,2015,47(05):694-700.[doi:DOI：10.15986/j.1006-7930.2015.05.015]
　ZHANG Kui,HAN Xiaolei.Research on micropile horizontal bearing capacity in the loess stratum ZHANG Kui1, HAN Xiaolei2[J].J.Xi’an Univ. of Arch. & Tech.：Natural Science Edition,2015,47(05):694-700.[doi:DOI：10.15986/j.1006-7930.2015.05.015]
点击复制

黄土地层微型桩水平承载力研究()
分享到：

西安建筑科技大学学报：自然版[ISSN:1006-7930/CN:61-1295/TU]

卷:
47
期数:
2015年05期
页码:
694-700
栏目:
出版日期:
2015-10-29

文章信息/Info

Title:
Research on micropile horizontal bearing capacity in the loess stratum ZHANG Kui1, HAN Xiaolei2
文章编号:
1006-7930(2015)05-0694-07
作者:
张 奎1; 韩晓雷2
(1. 北京交通大学土木建筑工程学院,北京100044;2. 西安建筑科技大学土木工程学院,陕西 西安 710055)
Author(s):
ZHANG Kui1;  HAN Xiaolei2
 (1. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China)
 (2. School of Civil Engineering, Xi ’an Univ. of Arch.& Tech., Xi’an 710055, China)
关键词:
微型桩; 水平承载力; 室内试验;  回归分析; 假设检验
Keywords:
micropile;  horizontal bearing capacity ;  indoor experiment;  regression analysis;  hypothesis testing
分类号:
TU444
DOI:
DOI：10.15986/j.1006-7930.2015.05.015
文献标志码:
A
摘要:
对于微型桩水平承载力，在目前的研究中尚未有统一的并被工程界普遍接受的表达式，本文就此问题进行了研究．首
先选用西安地区黄土作为试验模型的滑坡介质，在假定干密度保持不变的前提下，选择土体饱和度、桩径和桩间距作为影响
因素，每个因素选取三个试验水平，按照正交试验方案，对微型桩进行了室内试验，得到了不同影响因素和试验水平下的水
平承载力大小关系，并借助MATLAB 数据拟合功能，对水平承载力进行了一次线性和二次非线性函数的回归分析，对回归
函数系数分别运用假设检验的相关原理进行了评价，最后将二次非线性回归函数应用于工程实例中和原设计方案进行了对
比．试验结果表明微型桩的水平承载力与饱和度呈反比、与桩径呈正比关系，且三个因素对水平承载力影响大小的排列顺序
依次为饱和度＞桩径＞桩间距；回归结果展示了二次非线性回归函数相比一次线性能较好地吻合试验结果，且具有较高的拟
合精度；实例对比结果显示了二次非线性回归函数能够满足设计抗滑力的要求．
Abstract:
To start with, this article assumes that l oess in Xi’an is regarded as the slide mass and soil dry density is kept constant. Soil saturation, pile diameter and pile spacing are chosen as three experimental factors and there are three levels for every factor , so orthogonal experimental plan is made ; and the micropile horizontal bearing capacity was obtained by indoor test under this plan. Secondly, with the aid of MATLAB, the linear and quadratic nonlinear function of regression analysis are obtained, and the coefficients of two regression functions are evaluated by the application of relevant principle of hypothesis test; Finally, the quadratic non-linear regression function is applied to an engineering example and compared with the original design scheme. The experimental result s indicate that the horizontal bearing capacity has an inverse relationship with soil saturation and a positive relationship with the pile diameter, and the descending order is soil saturation, pile diameter and pile spacing according to t he significant effect of these factors on horizontal bearing capacity . Furthermore, the analysis result shows that the quadratic polynomial fitting trend can well fit the test results compared with linear polynomial and the quadratic nonlinear polynomial can have higher fitting accuracy, However the scheme manifests that it can meet the requirements of the design of sliding resistance.

参考文献/References:

参考文献 References
[1] CADDEN A, GOMEZ J, BRUCE D, et al. Micropiles:
recent advances and future trends[C]. Current Practices
and Future Trends in Deep Foundations. ASCE, 2004:
140-165.
[2] ARMOUR T，GRONECK P，KEELEY J，et al. Micropile
design and construction guidelines implementation manual[
R]. USA: publication NO.FHWA-SA-97-070. 2000.
[3] 陈正，梅岭，梅国雄．柔性微型桩水平承载力数值模
拟[J]．岩土力学，2011，32（7）：2219-2224
CHEN Zheng, MEI Ling, MEI Guoxiong. Numerical
simulation of lateral bearing capacity of flexible
micropile[J]. Rock and Soil Mechanics, 2011, 32(7):
219-2224.
[4] 胡毅夫，王庭勇，马莉．微型抗滑桩双排单桩与组合
桩抗滑特性研究[J]．岩石力学与工程学报，2012，
31(7):1499-1505.
HU Yifu, WANG Tingyong, MA Li. Research on anti-
sliding of single characteristics double-row and composite
anti-slide micropiles[J].Chinese Journal of Rock
Mechanics and Engineering, 2012, 31(7): 1499-1505.
[5] ROTHBAUER M J, RIchards Jr T D. Lateral loads on pin
Piles (micropiles)[C]. GeoSupport 2004: Innovation and
Cooperation in the Geo-Industry, 2004.
[6] XIANG B, ZHANG L M, ZHOU L R, et al. Field lateral
load tests on slope-stabilization grouted pipe pile
groups[J]. Journal of Geotechnical and Geoenvironmental
Engineering, 2014.
[7] WOLOSICK J R. Ultimate micropile bond stresses observed
during load testing in clays and sands[J]. Proc.,
GeoFlorida 2009: Contemporary Topics in Deep Foundations,
2009: 12-22.
[8] 杨文智．微型桩水平承载性状研究[D]．北京：中国地
质大学，2011：73-74.
YANG Wenzhi. Behavior of laterally loaded micropile
foundation[D]. Beijing: China University of Geosciences,
2011:73-74.
[9] 孙书伟，朱本珍，郑静．基于极限抗力分析的微型桩
群加固土质边坡设计方法[J]．岩土工程学报，2010，
32(11)：1671-1677.
SUN Shuwei, ZHU Benzhen, ZHENG Jing. Design
method of micropile group for soil slope stabilization
based on ultimate resistance of analysis[J]. Chinese Journal
of Geotechnical Engineering, 2010, 32(11): 671-1677.
[10] 苏荣臻，鲁先龙，郑卫锋．微型桩杆塔基础水平承载
力试验研究[J]．工业建筑，2012，42 增刊:381-384.
SU Rongzhen, LU Xianlong, ZHENG Weifeng. Experimental
study on horizontal bearing capacity of micropile
foundation for transmission tower[J]. Industrial Construction,
2012, 42(Suup.): 381-384.
[11] 方开泰，马长兴．正交及均匀试验设计[M]．北京：科
学出版社，2001.
FANG Kaitai, MA Changxin. Orthogonal and Uniform
Experimental Design[M].Beijing: Science Press, 2001.
[12] 钱鸿缙，王继唐，罗宇生，等．湿陷性黄土地基[M]．北
京：中国建筑工业出版社，1985.
QIAN Hongjin, WANG Jitang, LUO Yusheng, et al. Collapsible
Loess Foundation[M]. Beijing: China Arch
tecture & Building Press,1985.
[13] 张奎．黄土地层微型桩桩土共同作用模型试验及数值
模拟分析[D]．西安：西安建筑科技大学，2014:57-58.
ZHANG Kui. The model test and numerical analysis research
about the interaction of micropile and soil in the
loess stratum[D]. Xi’an: Xi’an University of Architecture
and Technology, 2014:57-58.
[14] 周品，赵新芳．MATLAB 数理统计分析[M]．北京：
国防工业出版社，2009：270-287.
ZHOU Pin, ZHAO Xinfang. Matlab Mathematical Statistical
Analysis[M]. Beijing: National Defence Industry
Press, 2009:270-287

相似文献/References:

[1]曹卫平,葛 欣.水平受荷斜桩承载变形性状及荷载传递机理分析[J].西安建筑科技大学学报：自然版,2017,49(05):624.[doi:10.15986/j.1006-7930.2017.05.002]
　CAO Weiping,GE Xin.Analyss of bearing capacity and load transfer mechanism of horizontally loaded batter piles[J].J.Xi’an Univ. of Arch. & Tech.：Natural Science Edition,2017,49(05):624.[doi:10.15986/j.1006-7930.2017.05.002]

备注/Memo

备注/Memo:
收稿日期：2015-03-03 修改稿日期：2015-10-11
作者简介：张奎（1989-），男，博士生，主要从事岩土防灾减灾及动力方面的研究．E-mail:zhangkui@bjtu.edu.cn
更新日期/Last Update: 2015-12-14