Model Experimental Study on Support Structure of Double-row Piles in Deep Foundation Pit

2019 3rd International Workshop on Renewable Energy and Development

能源学;生态环境科学

Wang, Yibo^1 ; Xia, Xiong^2 ; Wu, Yan^1

Department of Architectural and Environmental Engineering, Changzhou University Huaide College, Jingjiang, Jiangsu

214513, China^1

School of Environmental and Safety Engineering, Changzhou University, Changzhou, Jiangsu

213164, China^2

关键词: Deep foundation pit;    Double-row pile;    Earth pressure;    Loading condition;    Model experiments;    Power functions;    Quadratic function;    Support structures;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/267/3/032062/pdf
DOI  :  10.1088/1755-1315/267/3/032062

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The model experiment was designed to analyse the bending moment of pile body and earth pressure of double-row piles. The study finds that the influence of different loading conditions on pile bending moment and earth pressure is uniform. With the increase of pile spacing, the positive peak value of pile bending moment increases gradually. The average increment is about 27%.The trend of change coincides with power function. The positive peak value of earth pressure increases first and then stabilizes. The average increment is 11%. The trend of change accords with the quadratic function of one variable. With the increase of row spacing, the positive peak values of soil pressure and pile bending moment first decrease and then increase. The change relation is in accordance with the quadratic function of one variable. The minimum appears between 5.0d and 5.25d. It can be seen that when the row spacing is small, it can be regarded as a single row of piles. With the increase of row spacing, the two rows of piles share the load together. The structure tends to be reasonable. When the minimum earth pressure occurs, the retaining effect of the structure is the best.