Earticle

초록

영어

The seismic design according to the DBD(displacement based design) procedure is initiated by specifying a target displacement, while the elastic response acceleration is determined in the first instant to obtain the design force in the current FBD(force based design) procedure. The main difference in between FBD and DBD can be stated that the strength and stiffness are not the design parameters but the outcomes at the end in DBD procedure. The advantage of DBD over FBD is that it only requires the linear static analysis when formulating the design procedure but it can show the yield displacement, ultimate displacement, ductility and design yield moments. This study proposes a seismic design procedure for MDOF steel structure, utilizing this advantage of DBD. This study shows that the ultimate displacement of the structures can be estimated successfully by DBD procedure and target displacement and the story height are the only initial design parameters. It also reveals that drift ratio is the key parameter in DBD procedure affecting ductility, the yield displacement, damping and fundamental period for the structure.

목차

Abstract
1. 서론
2. DBD 설계의 절차
2.1 치환구조물법
2.2 변위기반설계법의 절차
3. 적용 설계 예
3.1 단 경간 2층 철골 구조물
3.2 3베이(bay) 5층 및 20층 철골 구조물
4. 설계 변수 고찰
4.1 층간변위 비
4.2 층고의 영향
4.3 설계 변위스펙트럼 강도의 영향
5. 비탄성 동적해석에 의한 DBD의 평가
6. 하중 기반설계(FBD)과의 비교
7. 결론
REFERENCES

저자

• 이형래 [ Lee, Hyungrae | 동의대학교 건축공학과 교수 ] Corresponding Author

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