Research on Energy Pile Load Transfer Analysis Method Considering Radial Temperature Effect

It is difficult to quantify the bearing characteristics of energy piles under the influence of temperature.The load transfer method considering the radial effect is proposed to study the force characteristics under the thermal-force coupling of energy piles.Temperature effect along the radial direction can be considered in the method.We can use this method to evaluate the influence of temperature changes on energy piles,and to study the distribution of the axial force and the lateral friction resistance of piles.Based on the field test on Kunshan energy pile,the feasibility of the method is verified.The calculation results show that the temperature has a significant effect on the stress-strain state of the energy pile.When the pile is subjected to the ultimate load and temperature load,the lateral resistance plays a little role.Under the cooling effect,residual deformation will occur at the top of the energy pile.Therefore,the settlement value should be reduced in the design of the energy pile according to th