Elastoplastic Analytical Solutions for Borehole Contraction of Bored Piles by Boring Unloading Based on Unified Strength Theory

DU Taoming; SONG Songke; LIU Wei; QUAN Xinrui; KONG Debiao

doi:10.3724/j.gyjzG23092004

Volume 54 Issue 7

Jul. 2024

Turn off MathJax

Article Contents

Abstract

References

Article Navigation > INDUSTRIAL CONSTRUCTION > 2024 > 54(7): 188-195

LI Xinjie, WANG Weiyong. Research on Mechanical Properties of Concrete-Filled Double-Skin Circular Steel Tubular Columns Stiffened by Perforated Steel Plates Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(7): 1-12. doi: 10.3724/j.gyjzG23071702

Citation:

DU Taoming, SONG Songke, LIU Wei, QUAN Xinrui, KONG Debiao. Elastoplastic Analytical Solutions for Borehole Contraction of Bored Piles by Boring Unloading Based on Unified Strength Theory[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(7): 188-195. doi: 10.3724/j.gyjzG23092004

Citation:

PDF( 4020 KB)

Elastoplastic Analytical Solutions for Borehole Contraction of Bored Piles by Boring Unloading Based on Unified Strength Theory

doi: 10.3724/j.gyjzG23092004

1. Sichuan Communication Surveying & Design Institute Co., Ltd., Chengdu 610017, China;
2. Yunnan Institute Building Research Co., Ltd., Kunming 650223, China

Received Date: 2023-09-20
Available Online: 2024-08-16

Abstract

Abstract

To quantitatively predict the process of unloading for bored piles, combining the unified strength theory (UST) with the non-associated flow rule, the elastoplastic analytical solutions of large strain and small strain for borehole contraction of bored piles were derived. And the influence of intermediate principal stress, dilatancy angle and parameters of piles on analytical values in the borehole contraction process were analyzed. The result indicated that the larger the coefficients of intermediate principal stress b and the internal friction angle of soil φ were, the smaller the dilatancy angle ψ of soil was, and the better the stability of borehole walls of bored piles was. The solutions based on the Mohr-Coulomb yield criterion and the small strain theory in a plastic state of borehole wall soil were both conservative. The larger the coefficient of intermediate principal stress b was, the larger the radial stress and the maximum circumferential stress at the same position of cylindrical borehole wall were, and the smaller the radial displacement at the same position was. With the increase in the coefficients of intermediate principal stress b, the maximum circumferential stress gradually approached the borehole wall, simultaneously, the increment of the maximum circumferential stress decreased with the increase in the coefficient of intermediate principal stress b. Both solutions for soil stress and displacement fields around the cylindrical borehole in the process of borehole contraction due to unloading by large and small strain theories all meet the requirements. The findings could be applied to the quantitative analysis for the stability of borehole wall soil during boring and the bearing characteristics of bored piles.
- bored pile,
- intermediate principal stress,
- unified strength theory,
- unloading,
- analytical solution

FullText(HTML)

References(27)

References

[1]	杨砚宗. 砂土考虑卸荷效应的钻孔灌注桩试验与理论研究[D]. 上海: 同济大学, 2011.
[2]	龚辉. 黏性土中钻孔灌注桩径向卸荷效应及其对桩侧摩阻力的影响机制[D]. 上海: 同济大学, 2013.
[3]	LUKOSE A, THIYYAKK S. Analysis of cavity expansion and contraction in unsaturated residual soils[J]. Geomechanics and Engineering, 2022, 28(4): 405-419.
[4]	WU Y, ZHANG X F, ZHAO C, et al. Effects of soil unloading and grouting on the vertical bearing mechanism for compressive piles[J/OL]. Ocean Engineering, 2023, 271[2023-09-20]. https://doi.org/10.1016/j.oceaneng.2023.113754.
[5]	王振峰, 赵婷, 徐明霞, 等. 深开挖后土体卸荷导致隧道隆起变形的算法[J]. 工业建筑, 2022, 52(3): 53-59.
[6]	YU H S, ROWE R K. Plasticity solutions for soil behaviour around contracting cavities and tunnels[J]. International Journal for Numerical and Analytical Methods in Geomechanics, 1999, 23(12): 1245-1279.
[7]	YU H S, HOULSBY G T. A large strain analytical solution for cavity contraction in dilation soils[J]. International Journal for Numerical and Analytical Methods in Geomechanics, 1995, 19(11): 793-811.
[8]	ZHAO C F, YANG YZ, ZHAO C, et al. Analytical solution for borehole contraction caused by radial unloading[J]. KSCE Journal of Civil Engineering, 2013, 17(1): 60-67.
[9]	温世游, 陈云敏, 唐晓武, 等. 排水条件下球形空腔收缩问题的弹塑性分析[J]. 岩石力学与工程学报, 2004, 23(13): 2251-2256.
[10]	温世游, 陈云敏, 李夕兵. 考虑应变软化特性的缩孔解析解[J]. 岩石力学与工程学报, 2002, 21(增刊2): 2432-2438.
[11]	张治国, 徐晨, 宫剑飞. 隧道开挖对邻近桩基变形及承载能力影响的弹塑性解答[J]. 岩石力学与工程学报, 2017, 36(1):208-222.
[12]	赵春风, 费逸, 赵程, 等. 无黏性土中钻孔径向卸荷收缩理论解[J]. 哈尔滨工业大学学报, 2020, 52(4):135-141.
[13]	MO P S, YU H S. Undrained cavity-contraction analysis for prediction of soil behavior around tunnels[J/OL]. International Journal of Geomechanics, 2017, 17(5)[2023-09-20]. https://doi.org/10.1061/(ASCE)GM.1943-5622.000081.
[14]	CHEN S L, ABOUSLEIMAN Y N. Drained and undrained analyses of cylindrical cavity contractions by bounding surface plasticity[J/OL]. Canadian Geotechnical Journal, 2016, 53(9)[2023-09-20].https://doi.org/10.1139/cgj-2015-0605.
[15]	胡云世, 孙庆, 韩进宝. 圆柱孔收缩的线弹性-完全塑性解及其应用[J]. 岩土力学, 2012, 33(5): 162-168.
[16]	张亚国, 肖书熊, 翟张辉, 等. 考虑黏土结构性影响的柱孔卸荷收缩问题解析及数值验证[J]. 中国公路学报, 2023, 36(5): 88-98.
[17]	张家奇, 赵春风, 赵程, 等. 考虑弹塑性卸荷的柱孔和球孔反向扩张解[J]. 岩土力学, 2023, 44(11): 3224-3234.
[18]	赵春风, 贾尚华, 赵程. 基于统一强度准则的柱孔扩张问题及扩孔孔径分析[J]. 同济大学学报(自然科学版), 2015, 43(11):1634-1641.
[19]	ZHAO C F, FEI Y, ZHAO C, et al. Analysis of expanded radius and internal expanding pressure for undrained cylindrical cavity expansion[J/OL]. International Journal of Geomechanics, 2018, 18(2)[2023-09-20]. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001058.
[20]	龚辉, 赵春风. 基于统一强度理论桩孔稳定性分析[J].沈阳建筑大学学报(自然科学版), 2011, 27(2): 237-241.
[21]	赵春风, 王有宝, 吴悦, 等.考虑不同中主应力影响的钻孔卸荷缩孔效应分析[J]. 哈尔滨工业大学学报, 2020, 52(11): 63-70.
[22]	ZHAO C F, WANG Y B, ZHAO C, et al. Analysis of drained cavity unloading-contraction considering different degrees of intermediate principal stress with unified strength theory[J/OL]. International Journal of Geomechanics, 2020, 20(7)[2023-09-20]. https://doi.org/10.1061/(ASCE)GM.1943-5622.000170.
[23]	俞茂宏. 岩土类材料的统一强度理论及其应用[ J]. 岩土工程学报, 1994, 16(2): 1-9.
[24]	汪鹏程, 朱向荣. 考虑中间主应力影响的土中孔扩张问题精确相似解[J]. 水利学报, 2004, 35(11): 68-73.
[25]	孔位学, 芮勇勤, 董宝弟. 岩土材料在非关联流动法则下剪胀角选取探讨[J]. 岩土力学, 2009, 30(11): 3278-3282.
[26]	ZHAO C F, WU Y, ZHAO C, et al. Pile side resistance in sands for the unloading effect and modulus degradation[J/OL]. Materiales de Construcción, 2019, 69[2023-09-20].https://doi.org/10.3989/mc.2019.03718.
[27]	YU M H. Unified strength theory and its applications[M]. Singapore:Springer-Verlag, 2004.

Relative Articles

[1]	YANG Tao, SHENG Zhicheng, WANG Hengdong. ONE DIMENSIONAL ANALYTICAL SOLUTION FOR CONSOLIDATION OF A COMPOSITE GROUND WITH T-SHAPED DEEP CEMENT MIXING COLUMNS[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(3): 102-108. doi: 10.13204/j.gyjz202003017
[3]	Xu Youjun Ding Yahui Liu Xinmei, . CALCULATION OF UNLOADING ADDITIONAL STRESS AT ANY POINT IN THE INTERIOR OF SEMI-INFINITE BODY DURING THE OVERPASS SUBWAY PROJECT[J]. INDUSTRIAL CONSTRUCTION, 2015, 45(6): 110-117. doi: 10.13204/j.gyjz201506022
[4]	Yang Tao, Wan Yihao, He Desheng. STATE THE ART OF CONSOLIDATION THEORY FOR COMPOSITE GROUND[J]. INDUSTRIAL CONSTRUCTION, 2015, 45(1): 152-155. doi: 10.13204/j.gyjz201501031
[5]	Deng Zongwei, Zhu Zhixiang, Zeng Xiangjun, Kong Gangqiang. STUDY OF RHEOLOGICAL PROPERTIES OF THE LACUSTRINE SOFT SOIL UNDER DIFFERENT STRESS LEVEL[J]. INDUSTRIAL CONSTRUCTION, 2014, 44(06): 67-72. doi: 10.13204/j.gyjz201406016
[6]	Wang Juan, Zhao Junhai, Zhu Qian, Zhang Zhichao, Liu Qi. AXIAL BEARING CAPACITY OF FRP-CONCRETE-STEEL DOUBLE-SKIN TUBULAR SHORT COLUMNS[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(11): 130-133. doi: 10.13204/j.gyjz201111028
[7]	LüWenzhi, Li Chunzhi, Yu Jianlin, Liu Chao. STUDY ON THE SETTLEMENT LAW OF THE COMPOSITE GROUND UNDER A FLEXIBLE FOUNDATION[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(9): 58-65,57. doi: 10.13204/j.gyjz201009016
[8]	Wu Ruiqian, Xie Kanghe, Shen Jianming. ANALYTICAL SOLUTIONS OF ONE-DIMENSIONAL THERMAL CONSOLIDATION OF SATURATED SOIL UNDER PERIODIC FLUCTUATION OF SURFACE TEMPERATURE[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(8): 86-90. doi: 10.13204/j.gyjz201008020
[9]	Shi Ping, He Shixiu, Fan Dongkai. TEST STUDY OF REAL THREE AXLE ON CROSSRANGE UNLOADING DEFORMATION OF CLAY[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(6): 88-91,104. doi: 10.13204/j.gyjz200906021
[10]	LüWenzhi, Yu Jianlin, Zheng Wei, Gong Xiaonan, Jing Zijing. STUDY OF ANALYTIC SOLUTION OF COMPOSITE GROUND UNDER FLEXIBLE FOUNDATION BASED ON SUPER-SUB STRUCTURE INTERACTION[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(4): 77-83. doi: 10.13204/j.gyjz200904018
[11]	He Yaping, Zhuang Zuocheng, Han Tianwei, Yu Changhai, Gao Jianzhong, Dong Lilei. DESIGN OF COMPOSITE PILE OF PRESTRESSED PIPE PILE AND CAISSON PILE[J]. INDUSTRIAL CONSTRUCTION, 2008, 38(9): 119-121. doi: 10.13204/j.gyjz200809034
[12]	Zhang Yanmei, Zhang Xudong, Zhang Hongru. CALCULATION METHOD OF GENERATION AND DISSIPATION OF EXCESS PORE WATER PRESSURE IN STONE COLUMNS FOUNDATION[J]. INDUSTRIAL CONSTRUCTION, 2007, 37(3): 56-59,94. doi: 10.13204/j.gyjz200703015
[13]	Jiang Li, Chen Lun. ANALYTICAL SOLUTION FOR THE LOAD-DISPLACEMENT RELATIONSHIP OF PULLOUT DX PILE BASED ON ELASTIC THEORY[J]. INDUSTRIAL CONSTRUCTION, 2006, 36(5): 65-70. doi: 10.13204/j.gyjz200605018
[14]	Jiang Jianping, Gao Guangyun. STUDY ON BEARING CAPACITY PER VOLUME OF BORED-CAST-PLACE PILES[J]. INDUSTRIAL CONSTRUCTION, 2006, 36(9): 43-45.
[15]	Yao Yong, Wang Ruheng, Lei Jinsong. ANALYSIS OF PRESSURE GROUTING AT PILE TIP OF BORED PILES IN PEBBLE STRATUM AND ITS BEARING CHARACTERISTICS[J]. INDUSTRIAL CONSTRUCTION, 2005, 35(7): 59-63. doi: 10.13204/j.gyjz200507017
[16]	Yang Hua, Yang Min, Zhou Hongbo. AN ANALYTICAL SOLUTION FOR SINGLE PILE IN NON-HOMOGENEOUS SOIL CONSIDERING SOIL HARDENING BEHAVIOR OF PILE TIP[J]. INDUSTRIAL CONSTRUCTION, 2005, 35(3): 46-48,55. doi: 10.13204/j.gyjz200503017
[17]	Liu Ming, Huang Maosong, Ma Jinrong. TESTING STUDY ON THE CLAY SOIL'S UNLOADING PROPERTIES UNDER HIGH STRESS[J]. INDUSTRIAL CONSTRUCTION, 2005, 35(8): 71-74. doi: 10.13204/j.gyjz200508018
[18]	Zeng Jie, Yu Xinchun, Yu Fusheng. STRENGTHENING DESIGN OF OFFICE BUILDINGcS ARCHIVES FLOOR STRUCTURE[J]. INDUSTRIAL CONSTRUCTION, 2004, 34(6): 15-17,27. doi: 10.13204/j.gyjz200406006
[19]	Yin Zifeng, Jin Xiangwu. ANALYSIS AND TREATMENT OF A LOCAL SLIDING ACCIDENT OF NO.3 RETAINING WALL OF A PROJECT[J]. INDUSTRIAL CONSTRUCTION, 2004, 34(2): 88-90. doi: 10.13204/j.gyjz200402026