| Title |
A Study on the Dynamic Behavior of Vertical Shaft in Multi-Layered Soil |
| Keywords |
vertical shaft;dynamic analysis;multi-layered soil;earthquake;shear force;bending moment;수직구;동적해석;다층지반;지진;전단력;휨모멘트 |
| Abstract |
In this study, dynamic response of a vertical shaft subjected to seismic loads was evaluated by three-dimensional Finite Element (FE) approach. The emphasis was on quantifying the ground conditions, input motions and direction of motions. A series of parametric analyses were carried out. From the results of FE analysis, more than 1.7 times increase in shear force and bending moment is obtained when the stiff layer was thinker than the soft layer. And all of the maximum values were occurred near the interface between the soil layers. The dynamic behavior of vertical shaft was significantly influenced by the different frequencies of the input motion, and normalized acceleration of surrounding soil was 3 times larger than vertical shaft. |