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할선강성을 이용한 직접비탄성내진설계
Direct Inelastic Earthquake Design Using Secant Stiffness

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Authors
박홍근; 엄태성
Issue Date
2004-02
Publisher
한국지진공학회 = Earthquake Engineering Society of Korea
Citation
한국지진공학회 논문집, 8권 1호, 2004, pp. 17-27
Keywords
seismic designsecant stiffnesselastic analysisinelastic analysisreinforced concreteperformance based design내진설계할선강성탐성해석비탄성해석철근콘크리트성능기초설계
Abstract
A new earthquake design method performing iterative calculations using secant stiffness was developed. The proposed design method has the
advantages of convenience and stability in numerical analysis because it uses elastic analysis. At the same time, the proposed design method
can accurately estimate the strength and ductility demands on the members because it performs the analysis on the inelastic behavior of
structure using iterative calculation. In the present study, the procedure of the proposed design method was established, and a computer
program incorporating the proposed method was developed. Design examples using the proposed method were presented, and its advantages
were presented by the comparisons with existing design methods using elastic or inelastic analysis. The proposed design method, as an integrated
method of analysis and design, can address the earthquake design strategy devised by the engineer, such as ductility limit on each member, the
design concept of strong column - weak beam, and etc. In addition, through iterative calculations on the structure preliminarily designed only
with member sizing, the strength and ductility demands of each member can be directly calculated so as to satisfy the given design strategy. As
the result, economical and safe design can be achieved. ; 본 연구에서는 할선강성을 사용하여 반복계산을 수행하는 새로운 내진설계법을 개발하였다. 개발한 설계법은 탄성해석을 수행하므로 수치해석의 안정성과 용이성을 갖추고 있으며, 동시에 반복계산으로 구조물의 비탄성 거동을 해석할 수 있으므로 각 부재의 강도 및 연성 요구량을 정확히 예측할 수 있다. 본 연구에서는 제안된 설계법의 절차를 정립하였고, 이를 고려한 컴퓨터 해석/설계 프로그램을 개발하였다. 또한, 제안된 설계법을 사용한 설계예제를 제시하였고, 탄성 혹은 비탄성 해석을 이용한 기존 설계법과의 비교를 통하여 그 장점을 검증하였다. 해석과 설계를 통합적으로 수행하는 제안된 설계법은 설계자의 의도에 따라 부재의 강도 및 연성능력, 강기둥-약보 등과 같은 내진설계전략을 효과적으로 구현할 수 있으며, 초기설계단계에서 각 부재의 크기만이 가정된 구조물에 대하여 반복계산을 수행함으로써 주어진 설계전략을 만족하는 비탄성 강도 및 연성 요구량을 직접적으로 계산할 수 있으므로, 경제적이고 안전한 내진설계가 가능하다.
ISSN
1226-525X
Language
Korean
URI
http://uci.or.kr/G300-jX1024380.v8n1p17

http://hdl.handle.net/10371/8145
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Architecture and Architectural Engineering (건축학과)Journal Papers (저널논문_건축학과)
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