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2013
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A Stress Ribbon Pedestrian Bridge a very thin superstructure compared to its span, its shape is maintained in the form of a suspension through a cable and through introduction of prestressing in the tensioned slab, this structure would seem to have an inverted arch behavior.
Structural features would seem to have a very simple form, however, during design, because the prestressed concrete structure behavior, Deck and Cable geometric nonlinear behavior, and time-dependent behavior should be reflected in the design, analysis and design can be difficult. Also, in addition to the cross-section assumed in a general structure design, the area of the support and tension cable and tension cable prestressed force is assumed. Therefore more iterative process occurs compared to the general structure.
A lot of research about Nonlinear analysis and approximate analysis method of stress ribbon structure has been made however, in the design process, research about efficient assumptions of design variables has been lacking. In this thesis, a design guideline is proposed, with an iterative process to reduce the design process and enable efficient design.
Basically, for the Design of stress-ribbon pedestrian bridge, the sag/span ratio, deck cross section, support and tension cable area and tension cable prestressed force should be assumed. Therefore understanding these actors and analysis of its effect in the design is also proposed in the design guideline. And to verify the application and reliability of the design guideline a design example is included.
Structural features would seem to have a very simple form, however, during design, because the prestressed concrete structure behavior, Deck and Cable geometric nonlinear behavior, and time-dependent behavior should be reflected in the design, analysis and design can be difficult. Also, in addition to the cross-section assumed in a general structure design, the area of the support and tension cable and tension cable prestressed force is assumed. Therefore more iterative process occurs compared to the general structure.
A lot of research about Nonlinear analysis and approximate analysis method of stress ribbon structure has been made however, in the design process, research about efficient assumptions of design variables has been lacking. In this thesis, a design guideline is proposed, with an iterative process to reduce the design process and enable efficient design.
Basically, for the Design of stress-ribbon pedestrian bridge, the sag/span ratio, deck cross section, support and tension cable area and tension cable prestressed force should be assumed. Therefore understanding these actors and analysis of its effect in the design is also proposed in the design guideline. And to verify the application and reliability of the design guideline a design example is included.
목차
1. 서 론 11.1. 연구의 배경 및 목적 11.2. 연구의 내용 22. 스트레스 리본 보도교의 설계 32.1. 개요 32.2. 설계기준 42.2.1. 일반사항 42.2.2. 검토사항 72.3. 시공 및 설계절차 132.3.1. 스트레스 리본 보도교 시공 순서 132.3.2. 설계 절차 152.4. 해석모델 172.4.1. 이론적 해석모델 172.4.2. 상용프로그램을 이용한 해석모델 202.4.3. 이론적 해석모델과 상용프로그램을 이용한 해석모델 비교 223. 설계 가이드라인 263.1. 개요 263.2. 적정 새그비 273.2.1. 일반적인 새그비 273.2.2. 새그비가 설계에 미치는 영향 303.2.3. 적정 새그비 가이드라인 423.3. Deck 단면가정 443.3.1. 일반적인 Deck 단면 443.3.2. Deck 단면 높이가 설계에 미치는 영향 473.3.3. 적정 Deck 단면 높이 가이드라인 523.4. 지배 설계변수 543.4.1. 설계 지배 한계상태 543.4.2. 지배 설계변수가 설계에 미치는 영향 563.4.3. 지배 설계변수 가이드라인 704. 설계 가이드라인을 이용한 설계 예 734.1. 설계개요 734.2. 구조해석 및 검토 745. 결론 및 향후 연구과제 865.1. 결론 865.2. 향후 연구과제 87부 록 A 88참고문헌 121ABSTRACT 123
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