Field tests on bearing capacity of digging-hole pile for transmission lines under complex loads

CUI Qiang; YANG Wen-zhi

doi:10.11779/CJGE2022S1039

Volume 44 Issue S1

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Chinese Journal of Geotechnical Engineering > 2022 > 44(S1): 219-225. > DOI: 10.11779/CJGE2022S1039

CUI Qiang, YANG Wen-zhi. Field tests on bearing capacity of digging-hole pile for transmission lines under complex loads[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(S1): 219-225. DOI: 10.11779/CJGE2022S1039

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Field tests on bearing capacity of digging-hole pile for transmission lines under complex loads

China Electric Power Research Institute, Beijing 102401, China

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Received Date: September 24, 2022
Available Online: February 06, 2023

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Abstract

Abstract

In order to study the bearing performance and difference of the foundation for transmission lines under complex load-bearing situations, by taking the digging-hole piles commonly used in transmission-line projects as the object and selecting the typical loess area as the test site, the field tests on the bearing performance of digging-hole piles for transmission lines under four loading cases are carried out. By testing the displacements of pile top and the soil pressures at pile end, the load-displacement curves, the ultimate bearing capacities and the soil pressures at pile end of digging-hole piles under different loading conditions are analyzed. The results show that due to the differences of bearing mechanism and failure mode, the morphological characteristics of load-vertical displacement curve of digging-hole piles under different vertical loads are obviously different, which is shown as "steep drop" under uplift loads and "slow change" under compression loads. For the digging-hole piles under combined loads, the compression force improves the horizontal bearing capacity, on the contrary, the uplift force weakens the horizontal bearing capacity. The relationship between the soil pressure at pile end and the compression load can be expressed by the quadratic function. Due to the different deformation characteristics of different types of piles under horizontal loads, the eccentric effects of the soil pressure at the end of the rigid piles are obvious, and those of the elastic piles are not obvious.
- transmission line,
- digging-hole pile,
- inclined load,
- load-displacement curve,
- ultimate bearing capacity,
- pile end,
- soil pressure

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References

[1]	KISHIDA H, MEYERHOF G G. Bearing Capacity of Pile Groups under Eccentric Loads in Sand[J]. Proc 6th ICSMFE Toronto, 1965, 109(2): 270–274.
[2]	MEYERHOF G G, RANJAN G. The bearing capacity of rigid piles under inclined loads in sand. Ⅰ: vertical piles[J]. Canadian Geotechnical Journal, 1972, 9(4): 430–446. doi: 10.1139/t72-043
[3]	MEYERHOF G G, RANJAN G. The bearing capacity of rigid piles under inclined loads in sand. Ⅲ: pile groups[J]. Canadian Geotechnical Journal, 1973, 10(3): 428–438. doi: 10.1139/t73-036
[4]	CHARI T R, MEYERHOF G G. Ultimate capacity of rigid single piles under inclined loads in sand[J]. Canadian Geotechnical Journal, 1983, 20(4): 849–854. doi: 10.1139/t83-091
[5]	MEYERHOF G G, SASTRY V V R N. Bearing capacity of rigid piles under eccentric and inclined loads[J]. Canadian Geotechnical Journal, 1985, 22(3): 267–276. doi: 10.1139/t85-040
[6]	KOUMOTO T, MEYERHOF G G, SASTRY V V R N. Analysis of bearing capacity of rigid piles under eccentric and inclined loads[J]. Canadian Geotechnical Journal, 1986, 23(2): 127–131. doi: 10.1139/t86-022
[7]	MEYERHOF G G, GHOSH D P. Ultimate capacity of flexible piles under eccentric and inclined loads[J]. Canadian Geotechnical Journal, 1989, 26(1): 34–42. doi: 10.1139/t89-004
[8]	SASTRY V V R N, MEYERHOF G G. Behaviour of flexible piles under inclined loads[J]. Canadian Geotechnical Journal, 1990, 27(1): 19–28. doi: 10.1139/t90-003
[9]	YALCIN A S, MEYERHOF G G. Bearing capacity of flexible piles under eccentric and inclined loads in layered soil[J]. Canadian Geotechnical Journal, 1991, 28(6): 909–917. doi: 10.1139/t91-108
[10]	SASTRY V V R N, MEYERHOF G G. Behaviour of flexible piles in layered sands under eccentric and inclined loads[J]. Canadian Geotechnical Journal, 1994, 31(4): 513–520. doi: 10.1139/t94-060
[11]	MEYERHOF G G. Behaviour of pile foundations under special loading conditions: 1994 R. M. Hardy keynote address[J]. Canadian Geotechnical Journal, 1995, 32(2): 204–222. doi: 10.1139/t95-024
[12]	横山幸满. 桩结构物的计算方法和计算实例[M]. 唐业清, 吴庆荪, 译. 北京: 中国铁道出版社, 1984. YUKIMITSU Y H. Calculation Methods and Examples for Pile Structures[M]. TANG Ye-qing, WU Qing-sun, trans. Beijing: China Communications Press, 1984. (in Chinese)
[13]	范文田. 轴向与横向力同时作用下柔性桩的分析[J]. 西南交通大学学报, 1986, 21(1): 39–44. https://www.cnki.com.cn/Article/CJFDTOTAL-XNJT198601004.htm FAN Wen-tian. Analysis of slender piles under simultaneous axial and transverse loading[J]. Journal of Southwest Jiaotong University, 1986, 21(1): 39–44. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-XNJT198601004.htm
[14]	赵明华, 侯运秋, 曹喜仁. 倾斜荷载下基桩的受力研究[J]. 湖南大学学报(自然科学版), 1997(2): 98–102, 109. doi: 10.3321/j.issn:1000-2472.1997.02.004 ZHAO Ming-hua, HOU Yun-qiu, CAO Xi-ren. Study on the behavior of inclinedly loading piles[J]. Journal of Hunan University (Natural Sciences), 1997(2): 98–102, 109. (in Chinese) doi: 10.3321/j.issn:1000-2472.1997.02.004
[15]	赵明华, 侯运秋, 单远铭. 倾斜荷载下桥梁桩基的计算与试验研究[J]. 湖南大学学报(自然科学版), 1999, 26(2): 86–91. doi: 10.3321/j.issn:1000-2472.1999.02.021 ZHAO Ming-hua, HOU Yun-qiu, SHAN Yuan-ming. Calculation and model test study on the bridge piles under inclined loads[J]. Journal of Hunan University (Natural Science), 1999, 26(2): 86–91. (in Chinese) doi: 10.3321/j.issn:1000-2472.1999.02.021
[16]	赵明华. 倾斜荷载下基桩的受力研究[D]. 长沙: 湖南大学, 2001. ZHAO Ming-hua. Study on the behavior of piles under inclined loads[D]. Changsha: Hunan University, 2001. (in Chinese)
[17]	侯运秋, 赵明华, 曹喜仁. 倾斜荷载下基桩的承载力研究[J]. 中南公路工程, 1998, 23(1): 39–42. https://www.cnki.com.cn/Article/CJFDTOTAL-ZNGL199801009.htm HOU Yun-qiu, ZHAO Ming-hua, CAO Xi-ren. Study on bearing capacity of foundation pile under inclined load[J]. Central South Highway Engineering, 1998, 23(1): 39–42. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZNGL199801009.htm
[18]	彭文祥, 赵明华. 成层地基中倾斜荷载作用下桩的受力研究[J]. 中南公路工程, 1999, 24(1): 27–30. https://www.cnki.com.cn/Article/CJFDTOTAL-ZNGL199901009.htm PENG Wen-xiang, ZHAO Ming-hua. Study on pile stress under inclined load in layered foundation[J]. Central South Highway Engineering, 1999, 24(1): 27–30. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZNGL199901009.htm
[19]	吴鸣, 赵明华. 大变形条件下桩土共同工作及试验研究[J]. 岩土工程学报, 2001, 23(4): 436–440. doi: 10.3321/j.issn:1000-4548.2001.04.011 WU Ming, ZHAO Ming-hua. Study on pile-soil interaction under large deflection and its model test[J]. Chinese Journal of Geotechnical Engineering, 2001, 23(4): 436–440. (in Chinese) doi: 10.3321/j.issn:1000-4548.2001.04.011
[20]	文松霖. 铅直、水平荷载作用下扩底桩的承载机理[J]. 长江科学院院报, 2004, 21(5): 24–27, 31. doi: 10.3969/j.issn.1001-5485.2004.05.007 WEN Song-lin. Resistance behaviors of pile with enlarged base under axial and lateral loads[J]. Journal of Yangtze River Scientific Research Institute, 2004, 21(5): 24–27, 31. (in Chinese) doi: 10.3969/j.issn.1001-5485.2004.05.007
[21]	吕凡任, 陈云敏, 陈仁朋, 等. 任意倾角斜桩承受任意平面荷载的弹性分析[J]. 浙江大学学报(工学版), 2004, 38(2): 191–194, 248. doi: 10.3785/j.issn.1008-973X.2004.02.014 LU Fan-ren, CHEN Yun-min, CHEN Ren-peng, et al. Analysis of batter pile under arbitrary inclined loads in semi-infinite solid[J]. Journal of Zhejiang University (Engineering Science), 2004, 38(2): 191–194, 248. (in Chinese) doi: 10.3785/j.issn.1008-973X.2004.02.014
[22]	郑刚, 王丽. 成层土中倾斜荷载作用下桩承载力有限元分析[J]. 岩土力学, 2009, 30(3): 680–687. doi: 10.3969/j.issn.1000-7598.2009.03.019 ZHENG Gang, WANG Li. Finite element analysis of bearing capacity of pile under inclined load in layered soil[J]. Rock and Soil Mechanics, 2009, 30(3): 680–687. (in Chinese) doi: 10.3969/j.issn.1000-7598.2009.03.019
[23]	王孝兵, 文松霖, 徐文强, 等. 荷载倾角对大直径长桩承载特性的影响分析[J]. 水利水运工程学报, 2012(2): 8–14. doi: 10.3969/j.issn.1009-640X.2012.02.002 WANG Xiao-bing, WEN Song-lin, XU Wen-qiang, et al. Numerical analysis of load inclination influence on the bearing behavior of large-diameter long pile[J]. Hydro-Science and Engineering, 2012(2): 8–14. (in Chinese) doi: 10.3969/j.issn.1009-640X.2012.02.002
[24]	周立朵, 孔纲强, 彭怀风, 等. 倾斜荷载下群桩承载特性理论分析[J]. 岩土力学, 2017, 38(9): 2647–2654. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201709025.htm ZHOU Li-duo, KONG Gang-qiang, PENG Huai-feng, et al. Theoretical analysis of bearing capacities of pile group under oblique load[J]. Rock and Soil Mechanics, 2017, 38(9): 2647–2654. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201709025.htm
[25]	中华人民共和国建设部. 岩土工程勘察规范: GB 50021—2001[S]. 北京: 中国建筑工业出版社, 2004. Ministry of Construction of the People's Republic of China. Code for investigation of geotechnical engineering: GB 50021—2001[S]. Beijing: China Architecture & Building Press, 2004. (in Chinese)
[26]	中华人民共和国住房和城乡建设部. 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. Ministry of Housing and Urban-Rural Development of the People's Republic of China. Technical code for testing of building foundation piles: JGJ 106—2014[S]. Beijing: China Architecture & Building Press, 2014. (in Chinese)
[27]	国家能源局. 架空输电线路基础设计技术规程: DL/T 5219—2014[S]. 北京: 中国电力出版社, 2015. National Energy Bureau of the People's Republic of China. Technical code for design of foundation of overhead transmission line: DL/T 5219—2014[S]. Beijing: China Electric Power Press, 2015. (in Chinese)
[28]	史佩栋. 桩基工程手册(桩和桩基础手册)[M]. 2版. 北京: 人民交通出版社, 2015. SHI Pei-dong. Pile Foundation Engineering Manual (Pile and Pile Foundation Manual)[M]. 2nd ed. Beijing: People's Communications Press, 2015. (in Chinese)