International Journal of Civil & Structural Engineering
Author(s) : ASSAD RASHID, MAJID ALI, NAKHSHAB AJAZ
There is a new trend to allow uplift in structures to have maximum energy dissipation during strong ground motion. This aspect needs to be studied in detail, particularly in three dimensional structures. To start with, a prototype 3D structure is considered. In this work, a relationship is developed between column uplift and energy dissipation for a 3D prototype structure during harmonic loading. The simple 550 mm high single storey structure consists of a top steel plate (500 mm x 500 mm and 5 mm thickness) with four corner aluminum columns (each having size of 30 mm x 30 mm x 3 mm). The structure will be simulated under harmonic loadings with two options: i. all four columns will be fixed, and ii. three columns will be fixed and fourth one will be allowed to have a maximum uplift of 5 mm. Relative comparison will be made between the two options. Column response and uplift will be measured. Detail discussions will be made on relative response of structures. This study will help in understanding the importance/benefit of allowing uplift in 3D structures.