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| CALCULATION OF INTERNAL FORCES AND DEFLECTIONS OF SINGLE PILE IN THE GROUP PILE FOUNDATION OF TRANSMISSION LINES |
| ZOU Dan1，2，HE Huaijian1 |
(1. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，
Chinese Academy of Sciences，Wuhan，Hubei 430071，China；2. College of Civil Engineering，
Hunan University，Changsha，Hunan 410082，China) |
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Abstract Through the force analysis of the group pile foundation，a vertical resistance coefficient of soil on the pile cap was proposed to calculate the uplift resistance and the stiffness coefficients of the pile top with the horizontal resistance were deduced based on the‘m’method. The deflection of the pile cap was calculated according to the force equilibrium equations and the internal forces and deflections of single piles were obtained with the deflection of the pile cap. Thus a method for calculating the single piles? internal forces and deflections of the group pile foundation was obtained. Finally，the single piles? internal forces and deflections of a group pile foundation with four piles were calculated under the uplift and compression conditions and the results were analyzed.
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Received: 27 March 2014
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2015, Vol. 34 
