| Title |
Seismic Response Characteristics of Low-Rise R/C Buildings Combined with Shear and Flexural Failure Systems |
| Keywords |
Low-Rise Reinforced Concrete Buildings ; Shear Failure System ; Flexural Failure System ; Seismic Capacity ; Nonlinear Seismic Analysis ; Parallel Combination |
| Abstract |
The purpose of this study is to discuss how strength and ductility of each system in low-rise R/C buildings combined with shear and flexural failure systems have influence on seismic capacities of the overall system, which is based on seismic response analyses of SDOF structural systems. To simulate the combined system, structures are idealized as a parallel combination of origin-oriented and degrading trilinear hysteretic models that fail primarily in shear and flexure, respectively. Stiffness properties of both models are varied in terms of story shear coefficients, and structures are subjected to five earthquake intensity levels that normalized on the basis of ten different ground motion components. To serve as a basis to approach to more reasonable estimation of seismic capacities of low-rise R/C buildings, statistical values of response ductility factors depending on earthquake intensity levels are determined for the parallel combination model having a range of prescribed strength values. By using these statistical quantities, interaction curves of required strengths of shear and flexural failure systems for various levels of ductility factors are finally derived for practical purposes. These interaction curves derived in this investigation are applied to the damaged buildings during past earthquakes, and its applicability to existing buildings is also discussed herein. |