喷灌挤压组合桩工作机理现场试验研究∗

李连祥

您当前的位置：

首页 >

文章列表页 >

喷灌挤压组合桩工作机理现场试验研究∗

更新时间：2025-09-25

- 喷灌挤压组合桩工作机理现场试验研究∗
- Study on Work Mechanism and In-situ Test of Pressure-grouting and Squeeze Combined Pile
- 防灾减灾工程学报 2020年第1期页码：18-28
- 作者机构：
  
  山东大学基坑与深基础工程技术研究中心,山东,济南,250061
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目（51508310）、山东省优秀中青年科学家科研基金（BS2013SF024）、济南市科技计划项目（201201145）资助
- DOI：
  中图分类号： TU443
- 纸质出版：2020
- 稿件说明：
移动端阅览
李连祥,黄亨利,李金良,王雷,孙帅帅.喷灌挤压组合桩工作机理现场试验研究∗[J].防灾减灾工程学报,2020,(1):18-28

LI Lianxiang. Study on Work Mechanism and In-situ Test of Pressure-grouting and Squeeze Combined Pile[J]. 2020, (1): 18-28.
李连祥,黄亨利,李金良,王雷,孙帅帅.喷灌挤压组合桩工作机理现场试验研究∗[J].防灾减灾工程学报,2020,(1):18-28 DOI：

LI Lianxiang. Study on Work Mechanism and In-situ Test of Pressure-grouting and Squeeze Combined Pile[J]. 2020, (1): 18-28. DOI：

摘要

通过5棵喷灌挤压组合桩破坏性静载试验，获得该桩工作机理，明确荷载传递机制、桩身轴力、侧摩阻力分布规律。不同荷载作用下，轴力沿桩身逐渐减小，在翼板顶轴力小幅度增大；桩身侧摩阻力随着外载的增加而逐渐增大，上部土体侧阻力先于下部土体发挥作用；揭示喷射注浆效应范围为7～8 m。喷灌挤压综合效应承载力增长显著，主要表现在侧摩阻：存在翼板时，喷射注浆与翼板共同作用，其侧摩阻极限值在砂土层中提高3～4倍，在黏土层中提高2～2.5倍。无翼板存在，但存在喷射注浆效应时，其侧摩阻力极限值提高了2～2.5倍。与普通长螺旋灌注桩相比其极限承载力提高25%～100%。

Abstract

Through five destructive static load tests of pressure-grouting and squeeze combined pile

the working mechanism of the pile was obtained

and the load transfer mechanism and pile axial force and lateral friction resistance distribution were clarified. Under different loads

the axial force gradually decreases along the pile body

while increases slightly at the top of the wing; the lateral friction of the pile gradually increases with the increase of the external load

and the lateral resistance of the upper soil precedes the lower soil; the jet grouting effect range is 7~8 m. The comprehensive bearing capacity of pressure-grouting and squeezing has increased significantly

mainly for the side friction. When there is a wing plate

the combined effect of jet grouting and wing plate leads to an increase in side friction limit value by 3 to 4 times in the sand layer

while by 2 to 2.5 times in the clay layer. For cases without wing plates but with a jet grouting effect

the side friction limit is increased by 2 to 2.5 times. Compared with ordinary long spiral cast-in-place piles

the ultimate bearing capacity of pressure-grouting and squeeze combined pile is increased by 25% to 100%.

关键词

Keywords

references

杨敏,曹方成,张齐兴.介绍几种异形截面桩[J].水利水电科技进展,2003,23(1):58-60. Yang M，Cao F Ch，Zhang Q X.Introduce several shaped section piles[J].Advances in Science and Technology of Water Resources,2003,23(1):58-60.(in Chinese)

张敏霞，刘汉龙，丁选明.现浇X形混凝土桩与圆形桩承载性状对比试验研究[J].岩土工程学报,2011,33(9):1 469-1 476. Zhang M X，Liu H L，Ding X M.Comparative tests on bearing capacity of cast-in-situ X-shaped concrete piles and circular pile[J].Chinese Journal of Geotechnical Engineering,2011,33(9):1 469-1 476.(in Chinese)

王新泉,陈永辉,刘汉龙.Y 型沉管灌注桩荷载传递机制的现场试验研究[J].岩石力学与工程学报,2008,27(3):615-623. Wang X Q,Chen Y H,Liu H L.In-situ study on load transfer mechanism of Y-shaped Vibro-pile.Chinese Journal of Rock Mechanics and Engineering,2008,27(3):615-623.(in Chinese)

贺德新，沈保汉.DX挤扩装置及DX多节挤扩桩的应用[J].工业建筑，2001,31（1）:27-31. He D X,Shen B H.DX extruding device and DX pile with multi-under-extruding branches [J].Industrial Construction,2001,31（1）:27-31.(in Chinese)

周佳锦，王奎华，龚晓南.静钻根植竹节桩承载力及荷载传递机制研究[J].岩土力学，2014,25（5）：1 367-1 376. Zhou J J,Wang K H,Gong X N.Bearing capacity and load transfer mechanism of static drill rooted nodular piles[J].Rock and Soil Mechanics,2014,25（5）：1 367-1 376.(in Chinese)

李连祥，李先军，成晓阳.考虑圆孔扩张理论的支盘桩荷载传递法[J].中国公路学报，2018,31（8）：20-29. Li L X,Li X J,Chen X Y.Load transfer method for squeezed and branch piles considering cavity expansion theory[J].China Journal of Highway and Transport,2018,31（8）：20-29.(in Chinese)

李连祥，李先军.不同扩径体数量、位置对支盘桩承载力的影响[J].山东大学学报（工学版），2016,46（5）:88-94. Li L X,Li X J.Influence of squeezed branch pile bearing capacity on different numbers and positions of enlarged parts[J].Journal of Shandong University（Engineering Science），2016,46（5）:88-94.(in Chinese)

李连祥，李先军，刘兵.竖向受压支盘桩沉降非线性简化分析方法[J].地下空间与工程学报，2018,14（4）：904-911. Li L X,Li X J,Liu B.A simplified nonlinear settlement analysis method for axial loaded squeezed and branch piles[J].Chinese Journal of Underground Space and Engineering,2018,14（4）：904-911.(in Chinese)

岳建伟，鲍鹏.组合桩的竖向承载力特性研究[J].土木工程学报，2008,41（5）：59-64. Yue J W,Bao P.Characteristics of the vertical bearing capacity of composite piles[J].China Civil Engineering Journal,2008,41（5）：59-64.(in Chinese)

周德泉，张可能，刘宏利.组合桩型复合地基桩、土受力特性的试验对比与分析[J].岩石力学与工程学报，2005,24（5）：872-879. Zhou D Q,Zhang K N,Liu H L.Working performance of piles and soil in combined-pile composite foundation[J].Chinese Journal of Rock Mechanics and Engineering,2005,24（5）：872-879.(in Chinese)

戴国亮，万志辉.后压浆桩增强效应作用机制及荷载沉降关系研究[J].岩土工程学报，2017,39（12）：2 235-2 244. Dai G L,Wan Zh H.Enhanced mechanism and load-settlement relationship of post-grouting piles[J].Chinese Journal of Geotechnical Engineering,2017,39（12）：2 235-2 244.(in Chinese)

田雪飞，卢海筠，闫景侠.后压浆灌注桩基承载力计算方法比较研究[J].岩土工程学报，2013,35（增1）：372-377. Tian X F,Lu H J,Yan J X.Comparative study on methods for bearing capacity of foundation with post-grouting drilling piles[J].Chinese Journal of Geotechnical Engineering,2013,35（Sup 1）：372-377.(in Chinese)

黄强.大直径扩底桩承载力及变形计算[J].建筑结构学报，1994,15（1）：67-77. Huang Q.Calculation of bearing capacity and deformation of large diameter expanded bottom pile[J].Journal of Building Structures，1994,15（1）：67-77.(in Chinese)

李金良.一种喷灌挤压组合桩[P]中国.CN105297710A.2016-02-03. Li J L.Pressure-grouting and squeeze combined pile[P]：China,CN105297710A.2016-02-03.(in Chinese)

建筑桩基技术规范JGJ94—2008 [S].北京：中国建筑工业出版社,2008. Technical code for building pile foundations:JGJ94—2008[S].Beijing:China Architecture & Building Press,2008.(in Chinese)

大直径扩底灌注桩技术规程:JGJ/T225—2010[S].北京：中国建筑工业出版社，2010. Technical specification for large-diameter belled cast-in-place pile foundation:JGJ/T225—2010[S].Beijing:China Architecture & Building Press,2010.(in Chinese)

张忠苗，张乾青.破坏和非破坏后注浆抗压桩受力性状现场试验研究[J].岩土工程学报，2011,33（10）：1 601-1 608.(in Chinese) Zhang Zh M,Zhang Q Q.Field tests on behavior of destructive and non-destructive base-grouting piles under compression[J].Chinese Journal of Geotechnical Engineering,2011,33（10）：1 601-1 608.(in Chinese)

张忠苗，王智杰，张乾青.浙江财富金融中心超长单桩与群桩实测沉降分析[J].岩石力学与工程学报，2011,30（增1）：3 199-3 207. Zhang Zh M,Wang Zh J,Zhang Q Q.Analysis of measured settlement of super-long piles and pile groups in Zhejiang fortune center[J].Chinese Journal of Rock Mechanics and Engineering,2011,30（Sup 1）：3 199-3 207.(in Chinese)

Zhang Q Q,Zhang Zh M.Complete load transfer behavior of base-grouted bored piles[J].Journal of Central South University of Technology,2012,19:2 037-2 046.

建筑基桩检测技术规范:JGJ 106—2014[S].北京：中国建筑工业出版社，2014. Technical code for testing of building foundation piles:JGJ 106—2014[S].Beijing:China Architecture & Building Press,2014.(in Chinese)

赵春风，于明章，吴水根.试桩未达破坏时单桩极限承载力的估算方法[J].同济大学学报，1999,27（4）：474-477. Zhao Ch F,Yu M Zh,WU Sh G.Method defining the bearing of single testing pile not reaching degree of failure[J].Journal of Tongji University,1999,27（4）：474-477.(in Chinese)

李先军.多节钻扩灌注桩最优构造与竖向承载力理论研究[D].济南：山东大学，2017. Li X J.Research on structure optimization and vertival bearing capacity theory for the multi-nodes drilled expanded bored pile[D].Jinan:Shandong University,2017.(in Chinese)

张建新，吴东云.桩端阻力与桩侧阻力相互作用研究[J].岩土力学，2008,29（2）：541-544. Zhang J X,Wu D Y.Research on interaction between resistance at pile and lateral resistance of pile[J].Rock and Soil Mechanics,2008,29（2）：541-544.(in Chinese)

宋兵.桩侧摩阻力特性的研究[D].广州：华南理工大学，2010. Song B.Study on the characteristics of shaft soil resistance of pile[D].Guangzhou:South China University of Technology,2010.(in Chinese)

浏览量

453

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

暂无数据