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Analysis of the Bearing Capacity of Red Clay Foundation Considering Stress Level

  • Dashu GuanEmail author
  • Guoqing Zhou
  • Guanghua Yang
  • Hengchang Liang
  • Fuqiang Chen
Technical Note
  • 22 Downloads

Abstract

Accurately evaluated the bearing capacity characteristic value of red clay is of great important to make use of high strength. Based on analyzing current specifications methods to determine the bearing capacity eigenvalue of red clay foundation, it is found that deficiencies are the limitation of application, the disturbance of determining indexes such as water content, liquid limit, plastic limit and compression modulus, and even lack of reflecting effects of the stress level, the shape and failure mode of subgrade. To deal with these shortcomings, a method for determining the bearing capacity of red clay foundation in view of the stress level was proposed. This method adopts tangent modulus that can reflect different depth of stress levels instead of compression modulus to calculate the curve of load and settlement under the size of plate, and utilizes the modified Vesic formula to consider the influence of the shape and failure mode of ground to calculate the ultimate bearing capacity as major parameter of different depth of stress level calculation. The indoor shear strength index can be used to calculate the ultimate bearing capacity if there is no plate load test. According to the characteristic of the settlement and load curve, the intrinsic value of subgrade bearing capacity is achieved using the plate load test method. Verified through an engineering cases, the characteristic value of the bearing capacity obtained using this method is more consistent with that obtained by the plate load test, meanwhile more flexible in the actual application. It also can be used for reference to determine the characteristic value of bearing capacity in other red clay area.

Keywords

Stress level Red clay Foundation Bearing capacity Loading test Tangent modulus Failure mode Size effect 

Notes

Acknowledgements

We thank Prof. Shan Xuguang, Dr. Chu Zhaoxiang and Prof. Bai Wei for many helpful comment and language improvement. Special thanks to the anonymous reviewers for their valuable comments. This project was supported partially by the Natural Science Quality Research and Innovation Platform Construction Project (cy0603yz02).

References

  1. Bai W, Wan Z (2010) Extension comprehensive prediction method for evaluation of subgrade bearing capacity of red clay area. Highway 7:85–90Google Scholar
  2. Bai W, Kong LW, Guo AG, Wan Z (2010) Research on distribution characteristics of bearing capacities and deformation parameters of laterite ground. Rock Soil Mech 31(2):164–169Google Scholar
  3. Бepeзaцeв BГ (1965) Calculation of foundation strength of structures, translation by Zhang S.W. China Industry Press, BeijingGoogle Scholar
  4. Department of Housing and Urban-Rural Development of Guangdong Province (DHURDGP) (2016) DBJ 15-31-2016 design code for building foundation in guangdong province. China Architecture and Building Press, BeijingGoogle Scholar
  5. Department of Housing and Urban-Rural Development of Guangxi Zhuang Autonomous Region (DHURDGZAR) (2015) DBJ 45/003-2015 code for design of building foundation in Guangxi province. China Architecture and Building Press, BeijingGoogle Scholar
  6. Department of Housing and Urban-Rural Development of Hubei Province (DHURDHP) (2014) DB4 2/242-2014 Technical code for building foundation in Hubei province. China Architecture and Building Press, BeijingGoogle Scholar
  7. Development Department of Guizhou Province (DDGP) (2004) DB 22/45-2004 code for design of building foundation in Guizhou province. China Architecture and Building Press, BeijingGoogle Scholar
  8. Gong XN (1996) Advanced soil mechanics. Zhejiang University Press, ZhejiangGoogle Scholar
  9. Guan DS (2009) Application of the undisturbed soil tangent modulus method on settlement calculation of the CM 3D high-strength composite foundation [Master’s thesis]. South China University of Technology, GuangzhouGoogle Scholar
  10. He CN, Ren Y, Wang HX (2011) Field tests on the bearing capacity of red clay foundation with high liquid limit in southwest of Hunan province. Hunan Commun Sci Technol 37(2):7–10Google Scholar
  11. Li RP (2008) Nonlinear ground settlement calculated by hyperbolic curve tangent modulus equation. Rock Soil Mech 29(7):1987–1992Google Scholar
  12. Lu YN (2010) The empirical relationship between the bearing capacity of red clay foundation in Guangxi and SPT. Urban Geotech Investig Surv 1:95–100Google Scholar
  13. Luo K, Guan SW, Meng HL (2008) Determination of the bearing capacity of red clay in Wuhan. Urban Geotech Investig Surv 2:155–158Google Scholar
  14. Ministry of Construction of the People’s Republic of China (MCPRC) (2002) GB50021-2001 code for investigation of geotechnical engineering. China Architecture and Building Press, BeijingGoogle Scholar
  15. Tan LR, Kong LW (2006) Soil science of special geotechnical engineering. Science Press, BeijingGoogle Scholar
  16. Yang GH (2001) Hyperbola model method in calculating the nonlinear settlement of foundation on granite residual soil. In: Proceedings of the 7th national conference on the numerical analysis and analytical method for rock and soil mechanics, vol. 9. University of Technology Press, Dalian, pp 168–171Google Scholar
  17. Yang GH (2006) Nonlinear settlement computation of the soil foundation with the undisturbed soil tangent modulus method. Chin J Geotech Eng 28(11):1927–1931Google Scholar
  18. Yang GH, Huang ZX, Jiang Y, Zhang YC (2016) Double controlling method for determining bearing capacity of foundation soils. Rock Soil Mech 37(2):232–242Google Scholar
  19. Zhao YW, Kong LW, Guo AG, Tuo YF (2003) Mechanical behaviors and water-sensitive properties of intact Guangxi laterite. Rock Soil Mech 24(4):568–572Google Scholar
  20. Zheng DT (1979) Calculation of ultimate bearing capacity of foundation. China Architecture and Building Press, BeijingGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Guangdong Polytechnic of Water Resources and Electric EngineeringGuangzhouChina
  2. 2.State Key Laboratory for Geomechanics and Deep Underground EngineeringChina University of Minding and TechnologyXuzhouChina
  3. 3.Guangdong Research Institute of Water Resources and HydropowerGuangzhouChina
  4. 4.The Geotechnical Engineering Technology Center of Guangdong ProvinceGuangzhouChina
  5. 5.School of Civil Engineering and TransportationSouth China University of TechnologyGuangzhouChina

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