Analysis and discussion on post-construction settlement of soft soil foundation treatment test section of highway

2nd International Conference on Materials Science, Energy Technology and Environmental Engineering

材料科学;能源学;生态环境科学

Zhang, M.^1 ; Li, J.J.^1 ; Qin, C.H.K.^1

Institute of Civil Engineering, Henan Institute of Engineering, Zhengzhou, China^1

关键词: Calculation results;    Comparative analysis;    Hyperbolic method;    Post-construction settlement;    Primary consolidation;    Secondary consolidation;    Soft soil foundation;    Three-point methods;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/81/1/012151/pdf
DOI  :  10.1088/1755-1315/81/1/012151

来源: IOP

【 摘 要 】

Combined with the settlement observation data in soft soil foundation test section of highway projects, the final settlement of soft soil foundation by preloading was calculated by using three-point method, Asaoka method and hyperbola method, and the comparative analysis on the final settlement and post-construction settlement of soft soil foundation were conducted by various calculation methods, then the suitability of calculation methods for post-construction settlement of highway soft soil foundation was discussed. And the results are shown as follows: (1) The final settlement results calculated by three-point method and Asaoka method were less than hyperbolic method, due to only considering the primary consolidation settlement for the first two methods; the calculation results of three methods were close to each other when the secondary consolidation settlement was considered, and the secondary consolidation settlement should be considered when the post-construction settlement was calculated by the first two methods. (2) The post-construction settlement and differential settlement of soft soil foundation test section of highway calculated by three methods were all satisfied with the design requirements.