| Title |
Nonlinear Dynamic Analysis of an Apartment Building for Vertical Extension Remodeling Including a Pile Foundation |
| Authors |
김경태(Kim, Kyungtae) ; 김종호(Kim, Jong-Ho) |
| DOI |
https://doi.org/10.5659/JAIK.2023.39.3.221 |
| Keywords |
Vertical Extension; Apartment Building; Pile Foundation; Construction Stage Analysis; Nonlinear Time History Analysis |
| Abstract |
After performing a nonlinear time history analysis of an apartment for vertical extension remodeling, the characteristics of the model
including a pile foundation and the pinned base model without including a pile foundation on the nonlinear behavior of a superstructure were
analyzed. By introducing vertical and horizontal stiffness to the pile, the constraint effect of the ground was defined. In the case of
insufficient strength of the pile during the construction stage, micro piles were additionally placed. The nonlinear properties of the
superstructure were the same as the typical performance-based seismic design procedure, and the nonlinear dynamic analysis of the 7-pair
earthquake motions were performed for the pile foundation model and the pinned base model. As a result of this analysis, it was found that
the story drift and material strains of the pile foundation model increased compared to the pinned base model. In addition, the base shear
force was reduced in the pile foundation model compared to the pinned base model, and the pile reaction force in the pile foundation model
was also reduced. This is thought to be the effect of reducing the response spectrum acceleration value due to the increase in the natural
period of the pile foundation model. |