Compressive bearing characteristics of metal grillage foundation in aeolian sand areas

LIU Guan-shi; ZHANG Cheng-cheng; ZHAO Qing-song; XU Guo-fang; CHEN Cheng; TIAN Sheng-kui

doi:10.11779/CJGE2022S1016

Volume 44 Issue S1

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Chinese Journal of Geotechnical Engineering > 2022 > 44(S1): 85-91. > DOI: 10.11779/CJGE2022S1016

LIU Guan-shi, ZHANG Cheng-cheng, ZHAO Qing-song, XU Guo-fang, CHEN Cheng, TIAN Sheng-kui. Compressive bearing characteristics of metal grillage foundation in aeolian sand areas[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(S1): 85-91. DOI: 10.11779/CJGE2022S1016

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Compressive bearing characteristics of metal grillage foundation in aeolian sand areas

1.
Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
2.
Guangxi Key Laboratory of Rock and Soil Mechanics and Engineering, Guilin University of Technology, Guilin 541004, China

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Received Date: September 21, 2022
Available Online: February 06, 2023

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Abstract

Abstract

The metal grillage foundation for transmission lines has good application prospect in the aeolian sand areas with harsh environment. To explore the compressive bearing performance of the metal grillage foundation in aeolian sand, 4 groups of true-type tests are carried out. The varying features of the vertical settlement and horizontal displacement at the top of the foundation, the stress of foundation components and the soil stress under the foundation, are all monitored, and then the ultimate bearing capacity of the foundation is analyzed. The results show that the foundation is in the compression-bending state under the combined loads, the ultimate bearing capacity is 1256 kN, and the lateral friction resistance accounts for about 33.5 %. When the compressive load is added to 1632 kN, the foundation has not yet reached the limit state. The horizontal load has an influence on the development of the support stress and the distribution of the soil stress under the foundation, and weakens the ultimate bearing capacity. The existence of surface frozen soil layer produces "frost-heaving restraint" effects on the foundation, enhancing the anti-deformation capability of the foundation. The bearing capacity of the foundation under the compressive loads calculated according to the effective contact area is closer to the measured value. Using the R. Ganesh theory, a method to obtain the ultimate bearing capacity of the foundation under the combined loads through the reduction calculation of the ultimate bearing capacity under compression is proposed. The research results may provide reference for the engineering design and application of the metal grillage foundation in transmission projects in desert areas.
- aeolian sand area,
- grillage foundation,
- combined load,
- frost heaving,
- bearing capacity

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[1]	程永锋, 郑卫锋, 张强, 等. 输电线路装配式基础应用研究[J]. 中国电力, 2016, 49(8): 26–30. doi: 10.3969/j.issn.1007-3361.2016.08.008 CHENG Yong-feng, ZHENG Wei-feng, ZHANG Qiang, et al. Application Research on assembly foundation of transmission lines[J]. Electric Power, 2016, 49(8): 26–30. (in Chinese) doi: 10.3969/j.issn.1007-3361.2016.08.008
[2]	张程程, 刘观仕, 杨景胜, 等. 板间距对风积沙金属装配式基础上拔承载力影响研究[J]. 岩石力学与工程学报, 2022, 41(10): 2149–2160. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX202210016.htm ZHANG Cheng-cheng, LIU Guan-shi, YANG Jing-sheng, et al. Influence of slab spacing on uplift bearing capacity of metal grillage foundations in aeolian sand[J]. Chinese Journal of Rock Mechanics and Engineering, 2022, 41(10): 2149–2160. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX202210016.htm
[3]	程永锋, 丁士君. 沙漠地区风积沙地基输电线路装配式基础真型试验研究[J]. 岩土力学, 2012, 33(11): 3230–3236. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201211005.htm CHENG Yong-feng, DING Shi-jun. Prototype tests of assembly foundation of transmission line in aeolian sand area[J]. Rock and Soil Mechanics, 2012, 33(11): 3230–3236. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201211005.htm
[4]	程永锋, 郑卫锋, 鲁先龙, 等. 输电线路装配式基础下压计算时底面积取值研究[J]. 岩土力学, 2016, 37(增刊1): 477–481. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX2016S1062.htm CHENG Yong-feng, ZHENG Wei-feng, LU Xian-long, et al. Research on criteria to define bottom area of assembled foundation of transmission line in calculation of compressive load[J]. Rock and Soil Mechanics, 2016, 37(S1): 477–481. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX2016S1062.htm
[5]	HALDER K, CHAKRABORTY D. Effect of inclined and eccentric loading on the bearing capacity of strip footing placed on the reinforced slope[J]. Soils and Foundations, 2020, 60(4): 791–799. doi: 10.1016/j.sandf.2020.04.006
[6]	XUE J, NAG D. Reliability analysis of shallow foundations subjected to varied inclined loads[J]. Geotechnical Safety and Risk, ISGSR, 2011: 377–384.
[7]	乾增珍, 鲁先龙. 风积砂地基装配式基础下压水平力组合荷载试验[J]. 工程力学, 2012, 29(6): 133–137, 195. https://www.cnki.com.cn/Article/CJFDTOTAL-GCLX201206020.htm QIAN Zeng-zhen, LU Xian-long. Field tests on assembly foundations subjected to compression and horizontal combination loads in aeolian[J]. Engineering Mechanics, 2012, 29(6): 133–137, 195. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GCLX201206020.htm
[8]	黄传志, 姜明宝, 张敬. 偏心倾斜荷载作用下的地基承载力计算方法[J]. 岩土工程学报, 2003, 25(1): 96–100. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC200301023.htm HUANG Chuan-zhi, JIANG Ming-bao, ZHANG Jing. Computation method for bearing capacity of ground under action of eccentric and inclined loads[J]. Chinese Journal of Geotechnical Engineering, 2003, 25(1): 96–100. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC200301023.htm
[9]	国家能源局. 沙漠地区输电线路杆塔基础工程技术规范: DL/T 5755—2017[S]. 北京: 中国电力出版社, 2017. National Energy Bureau of the People's Republic of China. Technical Code of Transmission Line Tower Foundation Engineering in Desert Area: DL / T 5755—2017[S]. Beijing: China Electric Power Press, 2017. (in Chinese)
[10]	鲁先龙, 童瑞铭. 青藏交直流联网工程装配式基础抗压性能试验[J]. 电力建设, 2011, 32(5): 16–20. LU Xian-long, TONG Rui-ming. Compressive performance test of precast concerete assembly foundation for Qinghai-Tibet AC/DC grid interconnection project[J]. Electric Power Construction, 2011, 32(5): 16–20. (in Chinese)
[11]	ABDEL-RAHMAN K, ACHMUS M. Numerical modelling of the combined axial and lateral loading of vertical piles[C]// Graz, Austria: 2006.
[12]	ACHMUS M, THIEKEN K. On the behavior of piles in non-cohesive soil under combined horizontal and vertical loading[J]. Acta Geotechnica, 2010, 5(3): 199–210.
[13]	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. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX200903021.htm 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) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX200903021.htm
[14]	张大长, 蒋刚, 林致添, 等. 装配式型钢基础抗压抗拔承载力的试验及计算[J]. 岩土力学, 2009, 30(7): 2096–2100+ 2118. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX200907046.htm ZHANG Da-chang, JIANG Gang, LIN Zhi-tian, et al. Experimental studies and calculating method for compression and uplift capacities of fabricated steel foundation[J]. Rock and Soil Mechanics, 2009, 30(7): 2096–2100+2118. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX200907046.htm
[15]	孔纲强, 顾红伟, 车平, 等. 桩侧截面形式对扩底桩竖向抗压特性影响分析[J]. 岩土力学, 2017, 38(2): 361–367. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201702009.htm KONG Gang-qiang, GU Hong-wei, CHE Ping, et al. Impact of pile shaft shapes on vertical bearing capacity of belled piles[J]. Rock and Soil Mechanics, 2017, 38(2): 361–367. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201702009.htm
[16]	BRANSBY M F, BROWN M J, KNAPPETT J A, et al. Vertical capacity of grillage foundations in sand[J]. Canadian Geotechnical Journal, 2011, 48(8): 1246–1265.
[17]	GANESH R, KHUNTIA S, SAHOO J P. Bearing capacity of shallow strip foundations in sand under eccentric and oblique loads[J]. International Journal of Geomechanics, 2017, 17(4): 06016028.
[18]	MEYERHOF G G. The bearing capacity of foundations under eccentric and inclined loads[C]// Proc. of the 3rd Int. Conf. on SMFE. 1953, 1: 440–445.

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