环向加筋灰土墩变形特性及其模量计算方法

赵泽宇; 高安荣; 郎瑞卿; 孙立强; 冯守中; 宋杨; 黄永杰

doi:10.13204/j.gyjzG20111903

环向加筋灰土墩变形特性及其模量计算方法

doi: 10.13204/j.gyjzG20111903

1. 天津市软土特性与工程环境重点实验室, 天津 300384;
2. 中交基础设施养护集团有限公司, 北京 100020;
3. 天津大学, 天津 300072;
4. 武汉广益交通科技股份有限公司, 武汉 430223;
5. 河北省岩土工程安全与变形控制重点实验室(河北水利电力学院), 河北沧州 061000

基金项目:

国家自然科学基金（52078336，52008286）；天津市自然科学基金（19JCYBJC22100，19JCQNJC06900）。

详细信息

作者简介:
赵泽宇,男,1995年出生,硕士研究生。

通讯作者:
郎瑞卿,tculrq@163.com。

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- 被引次数: 0
出版历程
- 收稿日期: 2020-11-19
- 网络出版日期: 2021-11-10
- 刊出日期: 2021-11-10

DEFORMATION CHARACTERISTICS AND MODULUS CALCULATION METHOD OF RING-REINFORCED LIME-SOIL PIERS

1. Tianjin Key Laboratory of Soft Soil Properties and Engineering Environment, Tianjin 300384, China;
2. China Communication Infrastructure Conservation Group Co., Ltd., Beijing 100020, China;
3. Tianjin University, Tianjin 300072, China;
4. Wuhan Guangyi Transportation and Technology Incorporated Company, Wuhan 430223, China;
5. Hebei Key Laboratory of Geotechnical Engineering Safety and Deformation Control(Hebei University of Water Resources and Electric Engineering), Cangzhou 061000, China

摘要

摘要: 环向加筋灰土墩可用于处理湿陷性黄土以及软土地基，其模量计算方法是影响工程设计的重要参数。采用数值方法对环向加筋灰土墩变形特性和破坏模式进行了分析，研究了围压、灰土墩自身特性和环向加筋材料抗拉强度对环向加筋灰土墩弹性模量的影响规律；考虑环向加筋材料的侧向约束作用，推导了弹性模量的理论计算方法；通过对比理论与数值计算结果，对加筋灰土墩弹性模量理论计算方法进行了修正。
- 环向加筋 /
- 灰土墩 /
- 变形特性 /
- 模量 /
- 数值模拟 /
- 理论推导
Abstract: Ring-reinforced lime-soil piers could be used to treat collapsible loess and soft soil foundation. Modulus calculation method is an important factor in engineering design. The deformation characteristics and failure mode of ring-reinforced lime-soil piers were analyzed by numerical method. The influence of confining pressure, the characteristics of lime-soil pier and the properties of ring-reinforced materials on the deformation characteristics of ring-reinforced lime-soil piers were studied. Considering the lateral restraint effect of reinforced materials, the calculation method of elastic modulus was deduced. By comparing the theoretical and numerical results, the theoretical calculation method for the elastic modulus of reinforced lime-soil pier was modified. The research results could provide a theoretical method and basis for engineering design.
- ring-reinforced /
- lime-soil piers /
- deformation characteristics /
- modulus /
- numerical simulation /
- theoretical deduction

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参考文献(14)

[1]	孙立强,邵丹丹, 冯守中,等. 土工合成材料约束碎石桩承载特性研究[J]. 岩土工程学报,2019(增刊2):29-32.
[2]	谈云志,郑爱,喻波,等. 重塑石灰土的力学特征与性能劣化机制分析[J]. 岩土力学,2013(3):653-658.
[3]	JAHANDARI S, SABERIAN M, ZIVARI F, et al. Experimental Study of the Effects of Curing Time on Geotechnical Properties of Stabilized Clay with Lime and Geogrid[J]. International Journal of Geotechnical Engineering, 2017,13(3):1-12.
[4]	ALMEIDA M S S, HOSSEINPOUR I, RICCIO M. Performance of a Geosynthetic-Encased Column (GEC) in Soft Ground:Numerical and Analytical Studies[J]. Geosynthetics International, 2013, 20(4):252-262.
[5]	HAN J, GABR M A. Numerical Analysis of Geosynthetic-Reinforced and Pile-Supported Earth Platforms over Soft Soil[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2002, 128(1):44-53.
[6]	HAN J, HUANG J, PORBAHA A. 2D Numerical Modeling of a Constructed Geosynthetic-Reinforced Embankment over Deep Mixed Columns[C]//Geofrontiers Congress 2005. Austin:2005:1-11.
[7]	KEYKHOSROPUR L, SOROUSH A, IMAM R. 3D Numerical Analyses of Geosynthetic Encased Stone Columns[J]. Geotextiles and Geomembranes, 2012, 35:61-68.
[8]	CARREIRA M, ALMEIDA, M, PINTO A. A Numerical Study on the Critical Height of Embankments Supported by Geotextile Encased Granular Columns[J]. Procedia Engineering, 2016, 143:1341-1349.
[9]	陈建峰,王兴涛,曾岳,等. 土工织物散体桩桩体大三轴试验研究[J].岩土工程学报,2017,39(12):2212-2218.
[10]	陈建峰,梅森,冯守中. 双向土工格栅加筋碎石桩单轴压缩试验[J]. 工程地质学报,2019,27(2):311-316.
[11]	刘鹏. 二灰改良黄土强度特性的试验研究[D]. 西安:西安工业大学,2018.
[12]	陈成. 压实及石灰改良黄土的力学和水力特性试验研究[D]. 西安:西安工业大学,2019.
[13]	LIU H L, NG CWW, FEI K. Performance of a Geogrid-Reinforced and Pile-Supported Highway Embankment over Soft Clay:Case Study[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2007, 133:1483-1493.
[14]	ZHUANG Y, WANG K. Finite Element Analysis on the Dynamic Behavior of Soil Arching Effect in Piled Embankment[J]. Transportation Geotechnics, 2018(14):8-21.