Dependence of ultimate bearing capacity and failure behavior of T-shaped deep cement mixing piles on enlarged cap shape and pile strength

作者：Phutthananon Chana; Jongpradist Pornkasem^*; Yensri Phatharaphong; Jamsawang Pitthaya

来源：Computers and Geotechnics, 2018, 97: 27-41.

DOI：10.1016/j.compgeo.2017.12.013

• Bearing capacity
• Failure pattern
• Shape factor
• Finite element analysis
• Small-scale physical model test
• T-shaped deep cement mixing pile

A numerical investigation of the ultimate pile capacity (Q(ult)) and failure behavior of T-shape deep cement mixing (TDM) piles is conducted under equivalent volume. Physical model tests are conducted to verify the numerical findings. The results reveal that both the shape of the enlarged pile cap and pile strength play key roles. Sensitivity analyses indicate that the effects of cap shape and pile strength on the complex load carrying behavior of TDM piles are attributable to changes in failure mode, which depend on the mobilized skin friction and bearing of both the cap and pile body.

• 出版日期2018-5