Design Analysis and Application of PST Piles in Soft Foundation Treatment of Road Under High Voltage Line
The deep soft foundation treatment section of Quanzhou Jinli Avenue project has existing 110 kV banded high-voltage overhead con-ductor,the construction conditions are limited by the height of the cable and the safety distance of the construction work,for ensuring the con-struction safety and quality,taking into account the technical feasibility,economic reasonableness and other factors,the soft foundation treat-ment program was compared,and finally selected the PST pipe pile.Through theoretical calculation of single pile vertical bearing capacity,composite foundation bearing capacity,foundation settlement and stability check,combined with the results of on-site pile test and settlement monitoring data during construction,the reasonableness of the design scheme is verified,and suggestions are made on design and construction.It is analyzed that PST piles have obvious advantages and significant effect in the height-restricted areas such as high-voltage overhead lines.
Soft foundation treatmentHigh voltage linePST pilesSettlement