|Table of Contents|

Experimental study on vertical bearing capacity of bridge pile foundation improved by cement-treated soil(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2026年02期
Page:
120-129
Research Field:
桥隧工程
Publishing date:

Info

Title:
Experimental study on vertical bearing capacity of bridge pile foundation improved by cement-treated soil
Author(s):
WAN Zhihui1;  LU Mingyang1;  SHAO Zhiqi1;  ZHOU Feng1;  DAI Guoliang2;  LI Junhui1
(1. College of Transportation Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China; 2. School of Civil Engineering, Southeast University, Nanjing 211189, Jiangsu, China)
Keywords:
bridge engineering;  post-grouted pile;  strength composite pile;  static load test;  enhancement effect;  bearing difference
PACS:
TU473
DOI:
10.19815/j.jace.2024.12111
Abstract:
Based on the Lianyungang-Zhenjiang high-speed railway project, two field tests of combined post-grouted piles with a diameter of 1 000 mm and a length of 44.5 m were conducted to analyze the bearing deformation characteristics and load transfer law of the combined post-grouted piles. Compared with three strength composite piles with a diameter of 1 000 mm and a length of 45 m carried out at different locations in the same project, the difference between the bearing capacity improvement effect and bearing mechanism of the two pile types was studied. The results show that compared with the ungrouted pile, the base resistance and side resistance of the combined post-grouted pile are greatly improved, and the base resistance is obviously improved, but the bearing characteristics is not changed. The side resistances of each soil layer are increased by 1.91-2.12 times, and the ultimate bearing capacities are increased by 2.01-2.23 times, indicating that the combined post-grouting piles can show higher load-bearing capacity. When the settlement of the pile head is 40 mm, the bearing capacity of post-grouted pile is increased by 31.1%-36.2% compared with that of strength composite pile. It can be seen that the bearing capacity improvement effect of post-grouted pile is obviously better than that of strength composite pile. Both pile types enhance the soil around the pile through cement grout or cement-treated soil to improve the pile-soil interaction and form a new pile-reinforced solid-soil structure. The strength composite pile improves the pile-soil contact characteristics through cement-treated soil, and transfers the upper load in the form of shear stress. But the post-grouted pile strengthens the pile end and the pile side in multiple layers at the same time, and the base resistance is first mobilized, and the side resistance is developed through the relative displacement of the pile shaft, forming a more stable pile-soil structure and load transfer system, thus more effective improving the bearing capacity of the pile foundation.

References:

[1] GUO J, DAI G L, WANG Y. Method for calculating vertical compression bearing capacity of the static drill rooted nodular pile[J]. Applied Sciences, 2022, 12(10): 5101.
[2]LAI V Q, KEAWSAWASVONG S, SHIAU J. Analysis of shaft-grouted piles using load-transfer method[J]. International Journal of Geosynthetics and Ground Engineering, 2022, 8(1): 4.
[3]熊彩凤,徐 甫,冯泓鸣,等.黄土地区桥梁灌注桩桩端后注浆优化室内模型试验研究[J].铁道科学与工程学报,2022,19(6):1585-1593.
XIONG Caifeng, XU Fu, FENG Hongming, et al. Laboratory model test study on optimization of post grouting at the end of bridge cast-in-place pile in loess area[J]. Journal of Railway Science and Engineering, 2022, 19(6): 1585-1593.
[4]CHEN J J, ZHANG L Y, ZHANG J F, et al. Field tests, modification, and application of deep soil mixing method in soft clay[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2013, 139(1): 24-34.
[5]周佳锦,王奎华,龚晓南,等.静钻根植竹节桩承载力及荷载传递机制研究[J].岩土力学,2014,35(5):1367-1376.
ZHOU Jiajin, WANG Kuihua, GONG Xiaonan, et al. Bearing capacity and load transfer mechanism of static drill rooted nodular piles[J]. Rock and Soil Mechanics, 2014, 35(5): 1367-1376.
[6]侯振坤,唐孟雄,胡贺松,等.随钻跟管桩竖向承载性能原位试验与室内物理模拟试验对比研究[J].岩土力学,2021,42(2):419-429.
HOU Zhenkun, TANG Mengxiong, HU Hesong, et al. Comparative study on the vertical load-bearing capacity of the drilling with pre-stressed concrete pipe cased pile based on in-situ and physical simulation tests[J]. Rock and Soil Mechanics, 2021, 42(2): 419-429.
[7]ZOU J F, YANG T, DENG D P. Field test of the long-term settlement for the post-grouted pile in the deep-thick soft soil[J]. Geomechanics and Engineering, 2019, 19: 115-126.
[8]邹 力,吴兴序,马建林,等.后注浆群桩基础施工期沉降-时间规律试验研究[J].岩石力学与工程学报,2010,29(增2):4033-4037.
ZOU Li, WU Xingxu, MA Jianlin, et al. Experimental study on settlement-time regularity of post-grouting group pile foundation during construction period[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(S2): 4033-4037.
[9]CHENG Y Z. Double layer load cell test of self-balanced method for bearing capacity of super-long bored piles[J]. IOP Conference Series: Earth and Environmental Science, 2019, 295(4): 042038.
[10]ZHENG A R, CHEN Z J, ZHUGE A J. Pile load test of post-grouting bored pile at Beijing capital international airport[J]. IOP Conference Series:Earth and Environmental Science, 2019, 267(5): 052060.
[11]黄生根,沈佳虹,李 萌.钻孔灌注桩压浆后承载性能的可靠度分析[J].岩土力学,2019,40(5):1977-1982.
HUANG Shenggen, SHEN Jiahong, LI Meng. Reliability analysis of bearing capacity of post-grouted bored piles[J]. Rock and Soil Mechanics, 2019, 40(5): 1977-1982.
[12]徐艺飞,万志辉,戴国亮,等.桩端后压浆灌注桩长期承载性能试验研究[J].建筑结构学报,2021,42(4):139-146.
XU Yifei, WAN Zhihui, DAI Guoliang, et al. Experimental study on long-term bearing behaviors of base post-grouting bored piles[J]. Journal of Building Structures, 2021, 42(4): 139-146.
[13]BARBOSA M G T, DE ASSIS A P, DA CUNHA R P. An innovative post grouting technique for soil nails[J]. Geotechnical and Geological Engineering, 2022, 40(11): 5539-5546.
[14]周志军,徐天宇,徐 甫,等.黄土地区不同成孔方式灌注桩压浆前后承载特性[J].交通运输工程学报,2021,21(4):84-93.
ZHOU Zhijun, XU Tianyu, XU Fu, et al. Bearing characteristics of cast-in-place piles with different hole-forming methods before and after grouting in loess area[J]. Journal of Traffic and Transportation Engineering, 2021, 21(4): 84-93.
[15]张 凯,马建林,罗朝洋,等.岩溶地区高速铁路桥梁桩基后注浆承载特性研究[J].铁道建筑,2018,58(8):30-33.
ZHANG Kai, MA Jianlin, LUO Chaoyang, et al.Bearing characteristic of post-grouting of high speed railway bridge pier foundation in karst area[J]. Railway Engineering, 2018, 58(8): 30-33.
[16]刘建红,陈良江,史良洪,等.铁路桥梁大直径管桩的适用性对比分析[J].铁道建筑,2019,59(5):56-58,116.
LIU Jianhong, CHEN Liangjiang, SHI Lianghong, et al. Comparison analysis of adaptability of large-diameter pipe piles for railway bridge[J]. Railway Engineering, 2019, 59(5): 56-58, 116.
[17]WAN Z H, DAI G L, GONG W M. Field and theoretical analysis of response of axially loaded grouted drilled shafts in extra-thick fine sand[J]. Canadian Geotechnical Journal, 2020, 57(3): 391-407.
[18]THIYYAKKANDI S, MCVAY M, NEERAJ C R. Full-scale axial load response of jetted and grouted precast piles in cohesionless soils[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2022, 148(6): 04022030.
[19]戴国亮,万志辉,龚维明,等.基于沉降控制的组合后压浆灌注桩承载力计算研究[J].岩土工程学报,2018,40(12):2172-2181.
DAI Guoliang, WAN Zhihui, GONG Weiming, et al. Calculation of bearing capacity for combined post-grouting bored piles based on settlement control[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(12): 2172-2181.
[20]饶少华,万志辉,罗志聪,等.强风化岩层大直径后压浆嵌岩桩承载性状试验研究[J].建筑结构学报,2022,43(增1):287-295.
RAO Shaohua, WAN Zhihui, LUO Zhicong, et al. Experimental study on bearing behavior of large diameter post-grouting rock-socketed pile in strongly weathered rock stratum[J]. Journal of Building Structures, 2022, 43(S1): 287-295.
[21]万志辉,戴国亮,高鲁超,等.大直径后压浆灌注桩承载力和沉降的实用计算方法研究[J].岩土力学,2020,41(8):2746-2755.
WAN Zhihui, DAI Guoliang, GAO Luchao, et al. A practical method of calculation of bearing capacity and settlement of large-diameter post-grouting piles[J]. Rock and Soil Mechanics, 2020, 41(8): 2746-2755.
[22]丁永君,李进军,刘 峨,等.劲性搅拌桩的荷载传递规律[J].天津大学学报,2010,43(6):530-536.
DING Yongjun, LI Jinjun, LIU E, et al. Load transfer mechanism of reinforced mixing pile[J]. Journal of Tianjin University, 2010, 43(6): 530-536.
[23]王安辉,章定文,刘松玉,等.水平荷载下劲性复合管桩的承载特性研究[J].中国矿业大学学报,2018,47(4):853-861.
WANG Anhui, ZHANG Dingwen, LIU Songyu, et al. Bearing capacity behavior of strength composite pipe pile subjected to lateral loading[J]. Journal of China University of Mining & Technology, 2018, 47(4): 853-861.
[24]钱于军,许智伟,邓亚光,等.劲性复合桩的工程应用与试验分析[J].岩土工程学报,2013,35(增2):998-1001.
QIAN Yujun, XU Zhiwei, DENG Yaguang, et al. Engineering application and test analysis of strength composite piles[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(S2): 998-1001.
[25]WANG C, XU Y F, DONG P. Working characteristics of concrete-cored deep cement mixing piles under embankments[J]. Journal of Zhejiang University-SCIENCE A, 2014, 15(6): 419-431.
[26]建筑基桩自平衡静载试验技术规程:JGJ/T 403—2017[S].北京:中国建筑工业出版社,2017.
Technical specification for static loading test of self-balanced method of building foundation piles: JGJ/T 403—2017[S]. Beijing: China Architecture & Building Press, 2017.
[27]李俊才,张永刚,邓亚光,等.管桩水泥土复合桩荷载传递规律研究[J].岩石力学与工程学报,2014,33(增1):3068-3076.
LI Juncai, ZHANG Yonggang, DENG Yaguang, et al. Study on load transfer law of pipe pile cement-soil composite pile[J]. Chinese Journal of Rock Mechanics and Engineering, 2014, 33(S1): 3068-3076.
[28]周 威,包 华,彭 杰,等.劲扩复合桩竖向抗压承载特性对比试验[J].科学技术与工程,2022,22(9):3696-3701.
ZHOU Wei, BAO Hua, PENG Jie, et al. Comparative experiment on the vertical compressive bearing characteristics of the expanded stiffened deep-cement-mixing pile[J]. Science Technology and Engineering, 2022, 22(9): 3696-3701.
[29]建筑桩基技术规范:JGJ 94—2008[S].北京:中国建筑工业出版社,2008.
Technical code for building pile foundations: JGJ 94—2008[S]. Beijing: China Architecture & Building Press, 2008.
[30]劲性复合桩技术规程:JGJ/T 327—2014[S].北京:中国建筑工业出版社,2014.
Technical specification for strength composite piles: JGJ/T 327—2014[S]. Beijing: China Architecture & Building Press, 2014.

Memo

Memo:
-
Last Update: 2026-04-01