| Title |
A Practical Rapid-Screening Method for Seismic Capacity Evaluation of Low-Rise R/C Buildings and its Verification of Applicability |
| Authors |
Lee Kang-Seok ; Kim Yong-In ; Wi Jeong-Du |
| Keywords |
Rapid-screening Method ; Low-rise Reinforced Concrete Buildings ; Equation of Damage Judgement ; Seismic Capacity Category ; Earthquake Damage Degree ; Nonlinear Analysis |
| Abstract |
Current rapid-screening methods, such as the Screening Phase of FEMA 310 and the First Level Procedure in Japanese Standard, have been developed to evaluate seismic capacities of a large number of existing buildings in a short time. Therefore, if the rapid-screening methods can screen out existing safe buildings reasonably, these methods will be useful strategy including economical aspects. In the current methods, however, the seismic capacities of reinforced concrete(RC) buildings controlled by both shear and flexure have not been fully discussed, also these are mainly focused on the strength capacity to withstand earthquake motions without demand for ductility. The purpose of this study is to propose a new rapid-screening method for more reasonably evaluating the seismic capacities of low-rise RC buildings. In this study, the equations of damage judgement and seismic capacity evaluation for quantitatively estimating the seismic performance were developed on the basis of the author's previous research works published in Ref. [4] and [5]. The proposed method is verified using observed real damage data of low-rise RC buildings caused by past earthquakes. In order to investigate a practical applicability of the proposed method, on the other hand, seismic capacities of two RC building examples including a pure frame and a frame with shear walls are evaluated based on the proposed method. At the same time, the detailed seismic performance of the examples are investigated on the basis of the 2nd and 3rd level procedures of the Japanese Standard, non linear static and dynamic analyses, respectively. Finally, relationships between evaluation results of the proposed method and the detailed evaluation methods are compared. Evaluation results indicate that the method proposed in this study compares reasonably well with the detailed evaluation methods. Using the evaluation method developed in this study, the seismic capacity category and earthquake damage degree of low-rise RC buildings corresponding to a specific earthquake level can be effectively estimated. |