Field tests on top-shaped concrete block cushion-reinforced soft soil foundation drained with sand bag well

LI Guo-wei; YU Yan-jie; XIONG Li; WU Jiang-tao; CAO Xue-shan

doi:10.11779/CJGE202103004

Volume 43 Issue 3

Turn off MathJax

Article Contents

Abstract

References

Chinese Journal of Geotechnical Engineering > 2021 > 43(3): 425-431. > DOI: 10.11779/CJGE202103004

LI Guo-wei, YU Yan-jie, XIONG Li, WU Jiang-tao, CAO Xue-shan. Field tests on top-shaped concrete block cushion-reinforced soft soil foundation drained with sand bag well[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(3): 425-431. DOI: 10.11779/CJGE202103004

Citation:

PDF (977 KB)

Field tests on top-shaped concrete block cushion-reinforced soft soil foundation drained with sand bag well

LI Guo-wei^{1, 2,},
YU Yan-jie^{1, 3},
XIONG Li^{1, 4},
WU Jiang-tao^{1, 2, ,},
CAO Xue-shan^{1, 2}

1.
Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210024, China
2.
Highway and Railway Research Institute, Hohai University, Nanjing 210024, China
3.
Zhejiang Electric Power Construction Company, Ningbo 315000, China
4.
Geotechnical Research Institute, Hohai University, Nanjing 210024, China

More Information

Received Date: June 14, 2020
Available Online: December 04, 2022

Graphical Abstract

Abstract

Abstract

The soft soil foundation drained by the conventional sand bag wells requires slow loading, which occupies more construction period and is not conducive to post-construction settlement control. In order to accelerate the loading rate of the drainage foundation of sand bag wells, field tests on the top-shaped concrete blocks-reinforced drainage foundation of sand bag wells are conducted. The research shows that the top-shaped concrete blocks can improve the overall stability of the foundation, and keep the foundation stable under the condition that the rapid loading causes the value of the pore pressure coefficient $\bar{B}$ $\bar{B}$ of soft soil to be greater than 1. The top-shaped concrete blocks reduce the high-compressibility soil in the shallow part of the foundation. The compression of the layer relatively increases the compression of the undrained soil layer under the soft soil layer, inhibits the development of lateral deformation of the soft soil, and reduces the rate of post-construction settlement. The top-shaped concrete block layer reduces the pore pressure in the compression layer, and the peak value accelerates the consolidation process of soft soil. The top-shaped concrete blocks have greater rigidity than the sand cushions, resulting in a significant change in the type of additional stress distribution generated by the upper load in the foundation, leading to that the comprehensive behavior of the drainage sandbag ground is strengthened.
- top-shaped concrete block cushion,
- sand bag well,
- post-construction settlement,
- porewater pressure,
- numerical simulation

FullText(HTML)

References (15)

References

[1]	SUSUMU Y, MOTOHIKO H, HIDEO N, et al. Effectiveness of top-shaped concrete blocks in preventing settlement of foundations in liquefied ground[J]. Soils and Foundations, 1994, 34(1): 65-76. doi: 10.3208/sandf1972.34.65
[2]	SUSUMU Y, KENJI I, KENJI H, et al. Effect of soil improvement on ground subsidence due to liquefaction[J]. Soils and Foundations, 1996, 36(S0): 99-107.
[3]	李平, 荒井克彦, 横倉幹雄. こま型基礎工法の支持力と沈下に関する現場載荷試験[J]. 応用力学論文集, 2004(7): 543-552. LI Ping, KATSUHIKO Arai, Yokokura MIKIO. Full-scale loading tests for bearing capacity and settlement of top base method[J]. Papers on Applied Mechanics, 2004(7): 543-552. (in Japanese)
[4]	唐业清, 唐作华. 陀螺桩的原理及应用[J]. 探矿工程(岩土钻掘工程), 1995(5): 55-56. https://www.cnki.com.cn/Article/CJFDTOTAL-TKGC506.028.htm TANG Ye-qing, TANG Zuo-hua. The principle and application of gyro piles[J]. Prospecting Engineering (Rock and Soil Drilling Engineering), 1995(5): 55-56. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TKGC506.028.htm
[5]	孙兴松. 陀螺桩基础应力与沉降特性研究[D]. 天津: 天津大学, 2007. SUN Xing-song. Research on the Stress and Settlement Characteristics of Gyro Pile Foundation[D]. Tianjin: Tianjin University, 2007. (in Chinese)
[6]	严驰, 孙兴松, 孙训海, 等. 陀螺桩地基土体应力分布有限元分析[J]. 港工技术, 2007(4): 43-45. doi: 10.3969/j.issn.1004-9592.2007.04.016 YAN Chi, SUN Xing-song, SUN Xun-hai, et al. Finite element analysis of the stress distribution of soil in gyro pile foundation[J]. Port Engineering Technology, 2007(4): 43-45. (in Chinese) doi: 10.3969/j.issn.1004-9592.2007.04.016
[7]	于志强. 加密塑料排水板真空联合堆载预压法在天津港南疆港区的应用[J]. 港口工程, 1996(2): 19-22. https://www.cnki.com.cn/Article/CJFDTOTAL-GKGC602.002.htm YU Zhi-qiang. The application of vacuum combined stacking preloading method of encrypted plastic drainage board in South Xinjiang Port Area of Tianjin Port[J]. Port Engineering, 1996(2): 19-22. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GKGC602.002.htm
[8]	刘吉福, 杨春林. 珠江三角洲地区竖向排水体施工扰动初探[J]. 岩石力学与工程学报, 2003, 22(1): 142-147. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200301027.htm LIU Ji-fu, YANG Chun-lin. Preliminary study on construction disturbance of vertical drainage in the Pearl River Delta[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 22(1): 142-147. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200301027.htm
[9]	刘松玉, 朱志铎, 方磊, 等. 高速公路液化地基处理原则与方法[J]. 岩土工程学报, 2001, 23(2): 135-138, 182. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC200102000.htm LIU Song-yu, ZHU Zhi-duo, FANG Lei, et al. Principles and methods for treatment of liquefied foundation of expressway[J]. Chinese Journal of Geotechnical Engineering, 2001, 23(2): 135-138, 182. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC200102000.htm
[10]	中华人民共和国交通部文件. 关于汕头至汾水公路(含潮州支线)初步设计的批复,交通部公路发(1997)888号[Z]. 北京: 中华人民共和国交通部, 1997. Documents of the Ministry of Communications of the People's Republic of China. Approval of the preliminary design of the Shantou-Fenshui Highway (including Chaozhou Branch), Ministry of Communications Highway No. (1997) 888[Z]. Beijing: Ministry of Communications of the People's Republic of China, 1997. (in Chinese)
[11]	高晖. ABAQUS在软基固结过程分析中的应用研究[D]. 武汉: 武汉理工大学, 2006. GAO Hui. Application of ABAQUS in the Analysis of the Consolidation Process of Soft Ground[D]. Wuhan: Wuhan University of Technology, 2006. (in Chinese)
[12]	王扶志, 张心剑. 陀螺桩在近海岸沙土基础中的应用[J]. 西部探矿工程, 2004(5): 176-177. https://www.cnki.com.cn/Article/CJFDTOTAL-XBTK200405079.htm WANG Fu-zhi, ZHANG Xin-jian. Application of gyro piles in sand foundation near the coast[J]. Western Prospecting Engineering, 2004(5): 176-177. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-XBTK200405079.htm
[13]	蒋建清, 曹国辉, 刘热强. 排水板和砂井联合堆载预压加固海相软土地基的工作性状的现场试验[J]. 岩土力学, 2015, 36(增刊2): 551-558. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX2015S2078.htm JIANG Jian-qing, CAO Guo-hui, LIU Re-qiang. Field test of the working behavior of the combination of drainage plates and sand wells combined with preloading to strengthen marine soft ground[J]. Rock and Soil Mechanics, 2015, 36(S2): 551-558. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX2015S2078.htm
[14]	建筑地基处理技术规范：JGJ 79—2012[S]. 2012. Technical Specifications for Building Foundation Treatment: JGJ 79—2012[S]. 2012. (in Chinese)
[15]	曹杰, 郑建国, 刘智, 等. 真空预压法处理软土地基的工程应用[J]. 岩土工程学报, 2017, 39(增刊2): 124-127. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2017S2032.htm CAO Jie, ZHENG Jian-guo, LIU Zhi, et al. Engineering application of vacuum preloading method to treat soft soil foundation[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(S2): 124-127. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2017S2032.htm

Supplements (0)

Cited By

Cited by

Periodical cited type(15)

1.	程虎，李重情，穆朝民. 冻结温度对不同粒径冻土石混合体劈裂特性的影响. 煤矿安全. 2024(01): 160-166 .
2.	张勇敢，鲁洋，刘斯宏，田金博，张思钰，方斌昕. 土工袋抑制膨胀土冻胀性能试验及机制探讨. 岩土力学. 2024(03): 759-768+796 .
3.	陈鑫，余文亮. 混合型缓冲回填材料劈裂抗拉强度尺寸效应统计分析. 科学技术与工程. 2024(10): 4229-4238 .
4.	吴进财，孙屹，毕朝达，郁舒阳. 基于SPH方法的土体干缩开裂数值模拟研究. 水电能源科学. 2024(11): 87-91 .
5.	田金博，张勇敢，鲁洋，马文鑫，刘斯宏，王柳江，刘瑾. 考虑初始饱和度影响的冻结渠坡膨胀土力学特性. 哈尔滨工业大学学报. 2024(11): 123-131 .
6.	韦四江，翟黎伟，王猛，高继耀，王生柱，李鑫鹏. 不同速率加锚煤样抗拉力学响应特征试验研究. 采矿与安全工程学报. 2023(03): 458-466 .
7.	谢敬礼，彭浩，杨明桃，杨建明，马利科. 缓冲/回填材料砌块抗拉强度试验研究. 世界核地质科学. 2023(02): 288-297 .
8.	马冬冬，汪鑫鹏，张文璞，马芹永，周志伟，张蓉蓉. 冲击荷载作用下冻土劈裂拉伸破坏特性试验研究. 岩土工程学报. 2023(07): 1533-1539 . 本站查看
9.	李新宇，凌贤长，曲娜. 考虑温度效应的冻结膨胀土统计损伤模型. 吉林大学学报(工学版). 2023(08): 2339-2349 .
10.	刘勤龙，李旭，姚兆明，吴永康，蔡德钩. 冻土强度特性及其主控因素综述. 冰川冻土. 2023(03): 1092-1104 .
11.	张思钰，张勇敢，刘斯宏，鲁洋. 膨胀土巴西劈裂强度及其破坏能量演化规律. 哈尔滨工业大学学报. 2023(11): 125-134 .
12.	马文鑫，张勇敢，刘斯宏，郑军威，凤良，鲁洋. 干密度和温度对冻结膨胀土单轴压缩特性影响的试验研究. 冰川冻土. 2022(02): 515-523 .
13.	张勇敢，刘斯宏，鲁洋，方斌昕，廖洁，张思钰. 袋装膨胀土强度变形特性及其碾压质量控制与检测. 河海大学学报(自然科学版). 2022(05): 118-123 .
14.	王海航，周扬，赵晓东，王建州，周国庆. 冻土抗拉强度研究现状与展望. 冰川冻土. 2022(06): 1807-1819 .
15.	郝常昊，任富强. 高原露天矿山冻土力学特性实验研究. 辽宁科技大学学报. 2022(06): 443-448 .

Other cited types(15)

Get Citation

PDF

XML

Article views (288) PDF downloads (133) Cited by(30)

Field tests on top-shaped concrete block cushion-reinforced soft soil foundation drained with sand bag well

Abstract

References

Cited by

Periodical cited type(15)

Other cited types(15)

Catalog

Related

Field tests on top-shaped concrete block cushion-reinforced soft soil foundation drained with sand bag well

Abstract

References

Cited by

Periodical cited type(15)

Other cited types(15)

Catalog

Related

Export File

Citation

Format

Content