비탄성 지진응답 제어를 위한 ATC-55에 기반한 마찰감쇠기 설계절차
ATC-55 Based Friction Damper Design Procedure for Controlling Inelastic Seismic Responses
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초록
본 논문의 목적은 탄성과 비탄성 구조물의 지진응답제어를 위한 마찰감쇠기의 설계절차를 제시하는 것이다. ATC-40과 ATC-55를 이용하여 비탄성 구조물의 등가선형감쇠비와 등가선형주기를 구하였고, 이에 기초하여 목표 성능을 만족하기 위한 마찰감쇠기의 최대마찰력을 결정하는 식을 제시하였다. 이 식은 항복 전후 강성비와 요구되는 탄성강도에 대한 항복강도비, 그리고 구조물의 주기에 따라 비선형 수치해석과 오차가 발생한다. 수식에 의해 산출한 최대마찰력과 비선형 수치 해석에 의해 산출된 값과의 오차를 줄이기 위하여, 최소 제곱법을 사용하여 오차 보정식을 제시하였다. 수치해석결과는 제안된 보정식을 사용하면 탄성 및 비탄성 지진응답제어를 위한 마찰감쇠기의 설계를 합리적으로 수행할 수 있음을 보여준다.
Abstract
The purpose of this paper is to present a design procedure of a friction damper for controlling elastic and inelastic responses of building structures under earthquake excitation. The equivalent damping and period increased by the friction damper are estimated using ATC-40 and ATC-55 procedures which provide equivalent linear system for bilinear one, and then a design formula to achieve target performance response level by the friction damper is presented. It is identified that there exists error between the responses obtained by this formula and by performing nonlinear analysis and the features of the error vary according to the hardening ratio, yield strength ratio, and structural period. Equations for compensating the error are proposed based on the least square method, and the results from numerical analysis indicate that the error is significantly reduced. The proposed formula can be used without much error for designing a friction damper for retrofitting a structure showing elastic or inelastic behavior.
참고문헌 (12)
- "Friction Joints for Seismic Control of Large Panel Structures", 25, pp.1980~
- "Vibration Control of Structures Under Earthquake Loading by Three-Stage Friction-Grip Elements", 16, pp.1988~
- "Performance of Steel Frames with a new Friction Damper Device Under Earthquake Excitation", 24, pp.365~371 (2002)
- "Direct Displacement-Based Design for Building with Passive Energy Dissipation Systems", 25, pp.25~37 (2003)
- "Experimental and Analytical Investigation of Seismic Retrofit of Structures with Supplemental Damping State University of New York at Buffalo", pp.7~ (1995)
- "지진하중을 받는 구조물의 성능에 기초한 마찰감쇠기 설계", 7(6), pp.17~24 (2003)
- "A progress report on ATC 55 evaluation and improvement of inelastic seismic analysis procedures The Fourth U.S.-Japan Workshop on Performance-Based Earthquake Engineering Methodology for Reinforced Concrete Building Structures", pp.20021031~48 (2002), Comartin C. D
- "Seismic evaluation and retrofit of concrete buildings" (1996)
- "The effective period and damping of a class of hysteretic structures"
- "An improved equivalent linearization procedure for the capacity spectrum method California Institute of Technology"
- "NERHRP Guidelines for the seismic rehabilitation of building", federal emergency management agency
- "Chopra A. K. Dynamics of Sturctures Theory and Applications to Earthquake Engineering 2nd edition", Prentice Hall. 271pp.