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A Study of Reinforced Concrete Flat Plate-Column Interior Connections with Shearbands : 전단밴드로 보강된 철근콘크리트 플랫 플레이트 내부 접합부의 실험적 연구

DC Field Value Language
dc.contributor.advisor강현구-
dc.contributor.author이주동-
dc.date.accessioned2017-07-14T04:00:17Z-
dc.date.available2017-07-14T04:00:17Z-
dc.date.issued2015-08-
dc.identifier.other000000066758-
dc.identifier.urihttps://hdl.handle.net/10371/124101-
dc.description학위논문 (석사)-- 서울대학교 대학원 : 건축학과, 2015. 8. 강현구.-
dc.description.abstractBecause a flat plate system is a system whose columns support slab without beams, it allows for relatively small floor height and simple formwork-
dc.description.abstracthowever, this system is vulnerable to seismic actions, as punching failure of flat plate-column connection may occur. To ensure its structural safety during earthquakes, an important design consideration is to obtain seismic ductility at the connection between column and slab. In this study, a shear band reinforcement is suggested as a method to improve overall performance of slab-column connections. The shearbands have many advantages over conventional shear reinforcement in terms of convenient installation and overall cost.
An experimental study was conducted to estimate the seismic and punching shear performance of the shear reinforcement for flat plate slab-column connections. A total of six specimens were constructed on one-half scale slab-column connections and included slab-column connections without shear reinforcement and with stirrups / shearbands. Three specimens were tested under reversed cyclic lateral loading subjected to a constant gravity shear ratio of about one-third of the nominal concrete shear strength, and the remaining specimens were tested under only gravity load. The test results indicate that both shear reinforcements used in this study substantially increased the punching shear strength, the ductility of the slab-column connections, and the dissipation energy capacity. Although the connections strengthened with shear band were not as effective as connections strengthened with stirrup, they showed sufficient capacity for use in nonparticipating and lateral-force resisting systems. Most of all, the feasibility of the shearbands in the figure is promising because its installation process is quite simple.		-
dc.description.tableofcontentsContents

Abstract i
Contents iii
List of Tables vi
List of Figures vii
List of Equations xii
Chapter 1. Introduction 1
1.1 Introduction 1
1.2 Objectives 3
1.3 Organization 4
Chapter 2. Previous Studies 5
2.1 Monotonic gravity load test 5
2.2 Seismic load test 9
Chapter 3. Design Code 17
3.1 ACI 318-11 17
3.1.1 Punching shear design 17
3.1.2 Unbalanced moment design 19
3.2 KCI 2012 23
3.2.1 Punching shear design 23
3.2.2 Unbalanced moment design 25
3.3 Eurocode 2 28
3.3.1 Punching shear capacity in slabs 29
3.3.2 Unbalanced moment design 32
Chapter 4. Specimen Design and Construction 35
4.1 Specimen Modeling 37
4.2 Detailed description of specimens 39
4.2.1 Details of shear reinforcement 39
4.2.2 Unbalanced moment specimens 42
4.2.3 Punching shear specimens 45
4.3 Specimen Setting 48
4.3.1 Unbalanced moment test 48
4.3.2 Punching shear 50
4.4 Gauge Plan 51
4.4.1 Unbalanced moment 52
4.4.2 Punching shear 53
4.5 Linear Variable Differential Transformer (LVDT) Plan 55
4.5.1 Unbalanced moment 55
4.5.2 Punching shear 55
4.6 Materials 56
4.6.1 Concrete 56
4.6.2 Reinforcement 57
Chapter 5. Experiments and Experimental Data 61
5.1 Unbalanced moment experiment 61
5.1.1 Gravity and lateral load plan 61
5.1.2 Moment vs. drift ratio 63
5.1.3 Comparison of lateral displacement capacity 78
5.1.4 Effective flexural transfer width 80
5.1.5 Energy dissipation capacity 82
5.1.6 Strains in top bar 86
5.2 Punching shear experiment 88
5.2.1 Load plan 88
5.2.2 Load vs. displacement curve 89
5.2.3 Strains in top bars 100
Chapter 6. Experimental Result and Analysis 103
6.1 Design code comparison 103
6.1.1 Punching shear experiment 103
6.1.2 Unbalanced moment experiment 114
6.2 Consideration 121
6.2.1 Transfer width 121
6.2.2 Effective depth 128
Chapter 7. Conclusion 131
References 133
국 문 초 록 137		-
dc.formatapplication/pdf-
dc.format.extent6129436 bytes-
dc.format.mediumapplication/pdf-
dc.language.isoen-
dc.publisher서울대학교 대학원-
dc.subjectFlat plate system-
dc.subjectshear reinforcement-
dc.subjectpunching shear-
dc.subjectunbalanced moment-
dc.subjectshearbands-
dc.subject.ddc690-
dc.titleA Study of Reinforced Concrete Flat Plate-Column Interior Connections with Shearbands-
dc.title.alternative전단밴드로 보강된 철근콘크리트 플랫 플레이트 내부 접합부의 실험적 연구-
dc.typeThesis-
dc.contributor.AlternativeAuthorJu Dong Lee-
dc.description.degreeMaster-
dc.citation.pagesxiii, 138-
dc.contributor.affiliation공과대학 건축학과-
dc.date.awarded2015-08-
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