| Title |
The Flexural Strength of Building Basement Wall Composited With Infilled Square Steel Tube Pile |
| Authors |
서수연(Seo, Soo-Yeon) ; 이병희(Lee, Byunghee) |
| DOI |
https://doi.org/10.5659/JAIK.2022.38.9.263 |
| Keywords |
Filled square tube pile; Composite basement wall; Bending strength; Flexural stiffness; Shear connector |
| Abstract |
In this study, a design method for estimating the flexural strength of a composite underground wall in which a filled square tube pile and a
building basement wall were combined was presented. When earth pressure is applied to the composite basement wall, most of the earth
pressure is transmitted to the building wall through low-rigidity piles not combined with the basement wall. Flexural deformation between the
two members occurs due to the difference in the flexural stiffness between the not combined pile and the basement wall. Accordingly, since
tensile stress as well as shear stress along the interface are generated in the shear connector. An flexural strength calculation process that
could reflect the state of the interface of the joint was presented and compared with actual experimental results in this paper. As a result,
when the composite ratio was less than 100%, it was found that the filled square steel tube pile and the RC wall behaved completely
independent under the consideration of the joint opening. In this case, the sum of each independent flexural strength was found to be close
to the actual experimental results rather than the flexural strength by composite action. The calculated moment showed good correspondence
with the experimental results. Therefore, through this calculation process, it is possible to predict the flexural strength of the composite
basement wall in case opening deformation occurs between the filled square tube pile and the RC wall. |