Abstract:

Tension piles are widely employed to resist the uplift loads of underground structures and commonly used as the foundations of tall buildings subjected to high bending moments. However, as compared with compressive piles, tension piles are seldom studied in the aspect of deformation, and most of existing methods are too complex to be applied to practical projects. In order to solve this problem, some normalizing parameters are selected to normalize different load-displacement curves to a single, which is then fitted by using a regression formula that is expanded to the condition of layered soil. By comparing modeling results with the field ones, it is found that the proposed method simplifies the calculation of deformation of tension piles with reasonable results.

Key words: tension pile, load-displacement curve, deformation, normalization