Earthquake analysis of 12 storey building considering built on three type of soil include effect of soil structure interaction

The consideration interaction between structure, foundation and soil under the foundation for analysis and design of the structure change the actual behavior of the structure than earn from the consideration of the structure only. Soil-structure-interaction has been a major topics in researchers of structural and earthquake designer engineering since it is closely related to the safety evaluation of many important super structure engineering projects, In the typical and traditional design practice all will assume that structures are fixed base but in real built on flexible area, soil under foundation is flex and capable to cause structure for motion, special during earthquake exciting. In the presented study the property of (12) real storey building are modelled under four type of different soil, first fix base model, Second very dense soil that shear wave velocity are equal (500 m/sec). Third medium soil stiffness that shear wave velocity are equal (Vs = 250 m/sec), fourth weak soil that shear wave velocity are equal (120 m/sec). Finite Element Method is used to model soil-structure-interaction, apply strong earthquake record for the structure and analysis linear dynamic of structures by numerical software engineering program SAP 2000 Version number 19. The main objective of this research are to investigate the influence , effect and behavior for interaction between structure and soil that build on it during earthquake exciting, and deal for new phenomena of design include soil-structure-interaction and compare with conventional design (fix bass design) by (i)determine displacement, (ii) drift between storey floor , (iii) maximum shear force, (iv) maximum bending moment, (v) maximum torsion and spectral velocity for fix base design theory and soil-structure-interaction consideration for different type of soil.