ZHANG Min, MA Jian-lin, SU Quan-ke, et al. Model test research on work performance of steel tubular composite pile with shear ring, drilling mud skin and anticorrosion coating[J]. 2014, 35(2).
ZHANG Min, MA Jian-lin, SU Quan-ke, et al. Model test research on work performance of steel tubular composite pile with shear ring, drilling mud skin and anticorrosion coating[J]. 2014, 35(2).DOI:
drilling mud skin and anticorrosion coating on performances of steel tubular composite (STC) piles
five model tests with different combinations of shear ring
drilling mud skin and anticorrosion coating are conducted; two of them are with shear ring
relying on the construction of the Hong Kong-Zhuhai-Macao Bridge. The load-deformation curves and deformations of cross-section
steel tube and shear ring have been compared and analyzed. The results obtained from the tests show that the bond strength of STC pile is reduced by drilling mud skin and anticorrosion coating
while the performances of steel tube are improved by shear ring. The cross-section deformation of pile shows "inverted v" or "m" type; it no longer meets section deformation assumption of classical mechanics. The disadvantage effects of drilling mud skin and anticorrosion coating can be completely overcome by the shear ring
when its spacing is less than 2D (D is pile’s diameter). Based on the test results
the stiffness calculation of STC pile has been discussed and the stiffness calculation formula in elastic stage has been given. The stiffness of STC pile is reduced by drilling mud skin with thickness of 0.1 mm and anticorrosion coating
which is improved by shear ring. The paper will provide references for STC pile’s design.