Advanced tangent modulus method and its application to calculation of foundation settlement

YANG Guang-hua; LI Zhuo-xun; WANG Dong-ying; LI Zhi-yun; JIANG Yan

doi:10.11779/CJGE202205001

Volume 44 Issue 5

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Chinese Journal of Geotechnical Engineering > 2022 > 44(5): 787-798. > DOI: 10.11779/CJGE202205001

YANG Guang-hua, LI Zhuo-xun, WANG Dong-ying, LI Zhi-yun, JIANG Yan. Advanced tangent modulus method and its application to calculation of foundation settlement[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(5): 787-798. DOI: 10.11779/CJGE202205001

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Advanced tangent modulus method and its application to calculation of foundation settlement

YANG Guang-hua^{1, 2, 3,},
LI Zhuo-xun¹,
WANG Dong-ying^{2, 3},
LI Zhi-yun^{2, 3},
JIANG Yan^{2, 3}

1.
Department of Civil Engineering, South China University of Technology, Guangzhou 510640, China
2.
Guangdong Research Institute of Water Resources and Hydropower, Guangzhou 510610, China
3.
The Geotechnical Engineering Technology Center of Guangdong Province, Guangzhou 510610, China

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Received Date: March 01, 2021
Available Online: September 22, 2022

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Abstract

Abstract

The tangent modulus method proposed by YANG Guang-hua is simple, with few parameters and easy for engineering application. The researches have shown that it has better accuracy when calculating the foundations with conventional dimensions, but for the large-sized foundations such as rafts, the calculated settlement is too large. For this reason, an advanced tangent modulus method considering the increase of the initial tangent modulus extension depth is proposed. The comparison with the actual engineering case and the calculated results by the finite element method of the small-strain hardening soil model shows that the advanced tangent modulus method can be more realistic. This further develops and improves the tangent modulus method.
- tangent modulus method,
- foundation settlement,
- finite element,
- small-strain hardening soil model

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References

[1]	王海波, 徐明, 宋二祥. 基于硬化土模型的小应变本构模型研究[J]. 岩土力学, 2011, 32(1): 39–43, 136. doi: 10.3969/j.issn.1000-7598.2011.01.007 WANG Hai-bo, XU Ming, SONG Er-xiang. A small strain constitutive model based on hardening soil model[J]. Rock and Soil Mechanics, 2011, 32(1): 39–43, 136. (in Chinese) doi: 10.3969/j.issn.1000-7598.2011.01.007
[2]	建筑地基基础设计规范: GB 50007—2011[S]. 2012. Code for Design of Building Foundation: GB 50007—2011[S]. 2012. (in Chinese)
[3]	杨光华. 地基非线性沉降计算的原状土切线模量法[J]. 岩土工程学报, 2006, 28(11): 1927–1931. doi: 10.3321/j.issn:1000-4548.2006.11.002 YANG Guang-hua. Nonlinear settlement computation of the soil foundation with the undisturbed soil tangent modulus method[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(11): 1927–1931. (in Chinese) doi: 10.3321/j.issn:1000-4548.2006.11.002
[4]	杨光华, 王俊辉. 地基非线性沉降计算原状土切线模量法的推广和应用[J]. 岩土力学, 2011, 32(增刊1): 33–37. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX2011S1007.htm YANG Guang-hua, WANG Jun-hui. Application of undisturbed soil tangent modulus method for computing nonlinear settlement of soil foundation[J]. Rock and Soil Mechanics, 2011, 32(S1): 33–37. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX2011S1007.htm
[5]	杨光华. 根据经验地基承载力反算土的强度和变形参数[J]. 广东水利水电, 2002(1): 3–6. https://www.cnki.com.cn/Article/CJFDTOTAL-GDSD200201000.htm YANG Guang-hua. According to the experience of foundation bearing capacity to inverse the strength and deformation parameters of soil[J]. Guangdong Water Resources and Hydropower, 2002(1): 3–6. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GDSD200201000.htm
[6]	杨光华. 深基坑支护结构的实用计算方法及其应用[M]. 北京: 地质出版社, 2004. YANG Guang-hua. Practical Calculation Method of Retaining Structures for Deep Excavations and Its Application[M]. Beijing: Geological Publishing House, 2004. (in Chinese)
[7]	DUNCAN J M, CHANG C Y. Nonlinear analysis of stress and strain in soils[J]. Journal of the Soil Mechanics and Foundations Division, 1970, 96(5): 1629–1653. doi: 10.1061/JSFEAQ.0001458
[8]	赵同顺, 周波. 大型油罐地基变形特性的研究[J]. 岩石力学与工程学报, 2004, 23(6): 1037–1043. doi: 10.3321/j.issn:1000-6915.2004.06.028 ZHAO Tong-shun, ZHOU Bo. Deformation behaviors of soft foundation under large oil tank[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(6): 1037–1043. (in Chinese) doi: 10.3321/j.issn:1000-6915.2004.06.028
[9]	赵同顺. 5×10⁴ m³大型油罐岩土工程实录[C]// 第五届全国岩土工程实录交流会岩土工程实录集, 2000, 南京. ZHAO Tong-shun. Geotechnical engineering record of 5×10⁴m³ large oil tank[C]// The 5th National Geotechnical Engineering Record Exchange Conference, 2000, Nanjing. (in Chinese)
[10]	舒武堂, 李国胜, 蒋涛. 武汉地区淤泥质软土、黏性土的压缩模量与变形模量的相关关系[J]. 岩土工程界, 2004, 7(7): 29–30. https://www.cnki.com.cn/Article/CJFDTOTAL-YSJS200407011.htm SHU Wu-tang, LI Guo-sheng, JIANG Tao. The correlativity between the compression model and elastic model for silt and clay in Wuhan[J]. Geotechnical Engineering World, 2004, 7(7): 29–30. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSJS200407011.htm
[11]	C M PLANT G W. The settlement performance of a raft supporting a 27-storey hotel on estuarine deposits in Durban[J]. Civil Engineering = Siviele Ingenieurswese, 1990, 32(6).
[12]	建筑地基基础设计规范: DBJ15—31—2016[S]. 2016. Design Code for Building Foundation: DBJ15—31— 2016[S]. 2016. (in Chinese)