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고성능 섬유보강 시멘트복합재 활용 곡선 및 비정형 구조부재의 성능평가

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Author(s)
김호연
Issued Date
2019
Abstract
The aim of this study is to introduce a slim member with the same performance as the existing reinforced concrete member and the shape of the slim member have a curved surface that gives aesthetical values in an exposed open area along with the engineering values. The above values where attend by applying a High Performance Fiber Reinforced Cement Composite. In the study different formulas were established for material modeling, analysis and design of bending and shear strength based on the results of dynamic experiments on High Performance Fiber Reinforced Cement Composite for irregular structural members. In order to suggest a curve in the shape of the member, prior study should be made for the curved and irregular sections of the members. The study is done by analyzing the structural dynamic behavior and stress distribution for bending and shear that occurred to the members supporting loads that acts in a perpendicular direction to the axis of the horizontal structural member, the beam. Besides, the beam member is divided into two cases; one is bending and the other is shear, both highly affect the beam members. This paper tries to curve the problems by suggesting the shape and design directions in the longitudinal directions. The study conducted analytical and experimental evaluation to verify the performance of developed curve and irregular concrete structural members. At that moment, the study selects and uses the irregular and variable form which the study devised in order to make the curved and irregular concrete structural member perfect. For analytical verification and evaluation, the study compared newly developed design and strength calculation formulas with different country code of design and the study also conducted irregular section stratification bending analysis. In addition, the study was compared with the results from finite element analysis. Finally, the result of the experiment and the study verified the possibility of commercialization of the curved and irregular concrete structural members. These members even have more appealing appearance architecturally compared to the rectangular blocks. Furthermore the design of the curved shape of a member can be free in its own or can have a high functional role in line with the purpose and the application of High Performance Fiber Reinforced Cement Composite having the same or better structural performance from the existing reinforced concrete member. To conclude, the new member with High Performance Fiber Reinforced Cement Composite is expensive compared to the general type of concrete. However, the study shows that the new members can reduce costs since it decrease in total volume of concrete required and does not necessarily require finishing work it can be exposed reducing the finishing cost as well.
Alternative Title
Performance Evaluation of Curved and Non-uniform Structural Members using High Performance Fiber Reinforced Cement Composite
Alternative Author(s)
Kim, Hoyeon
Department
일반대학원 건축공학과
Advisor
조창근
Awarded Date
2019-08
Table Of Contents
제1장 서론 ·····························································································································1
제1절 연구 배경 및 목적 ····························································································1
제2절 연구 동향 ·················································································································3
제3절 연구 내용 및 방법 ····························································································9

제2장 고성능 섬유보강 시멘트복합재 역학적 특성 ·············11
제1절 재료특성 ··················································································································11
1. 프리믹싱 결합재 ········································································································11
2. 강섬유 ······························································································································13
3. 혼화제 ······························································································································13
4. 배합 ···································································································································13
5. 슬럼프 플로 시험 ······································································································14
제2절 역학실험 ··················································································································15
1. 압축 ···································································································································15
2. 인장 ···································································································································19
3. 전단 ···································································································································24
제3절 강섬유 보강 콘크리트 재료 모델 ·······················································28
1. 국내 K-UHPC ··················································································································28
2. 일본 UFC ·························································································································31
3. 유럽, UHPFRC ·············································································································35
제4절 HPC 응력-변형률 모델 제안 ····································································39
1. 설계 응력-변형률 ······································································································40
2. 설계 전단강도 ·············································································································43

제3장 HPC 적용 구조부재 설계 및 해석 ············································45
제1절 설계 강도 산정식 ····························································································45
1. 일반 철근콘크리트 구조부재 설계 강도 산정식 ···································45
2. 곡선 및 비정형 구조부재 설계 휨강도 산정 ··········································53
3. 곡선 및 비정형 구조부재 설계 전단강도 산정 ·····································55
제2절 비정형 단면 층상화 휨해석 ····································································55
제3절 3차원 비선형 솔리드 유한요소해석 ···············································61
1. 압축응력 관계 ·············································································································62
2. 인장응력 관계 ·············································································································62

제4장 곡선 및 비정형 구조부재 설계 ··················································64
제1절 구조역학 거동 관계 ·······················································································65
제2절 곡선 및 비정형 구조부재 ·········································································66
1. 곡선 및 비정형 단면 ······························································································66
2. 곡선 및 비정형 솔리드 부재 ·············································································70
3. 곡선 및 비정형 트러스 부재 ·············································································73
제3절 구조 상세 ···············································································································78
1. 최소피복두께 ···············································································································78
2. 보강철근 ·························································································································79
3. 내구성 ······························································································································79

제5장 곡선 및 비정형 단면적용 구조부재 ······································80
제1절 곡선 및 비정형 단면적용 구조부재 실험계획 및 방법 ····80
1. 실험계획 ·························································································································80
2. 실험방법 ·························································································································82
3. 실험체 제작 ··················································································································83
제2절 실험 및 결과 ·······································································································86
1. 휨 파괴형 실험체 ······································································································86
2. 전단 파괴형 실험체 ·································································································94
3. 실험결과 ·······················································································································101
제3절 해석결과 ················································································································103
1. 설계 강도 산정 ·········································································································103
2. 비정형 단면 층상화 휨해석 ·············································································106
3. 3차원 비선형 솔리드 유한요소해석 ····························································110
제4절 소결 ··························································································································116

제6장 곡선 및 비정형 솔리드 구조부재 ··········································117
제1절 곡선 및 비정형 솔리드 구조부재 실험계획 및 방법 ·······117
1. 실험계획 ·······················································································································117
2. 실험방법 ·······················································································································120
3. 실험체 제작 ················································································································121
제2절 실험 및 결과 ·····································································································125
1. 곡선 및 비정형 솔리드 실험체 ······································································125
2. 실험결과 ·······················································································································131
제3절 해석결과 ················································································································132
1. 설계 강도 산정 ·········································································································132
2. 비정형 단면 층상화 휨해석 ·············································································134
3. 3차원 비선형 솔리드 유한요소해석 ····························································135
제4절 소결 ··························································································································140

제7장 곡선 및 비정형 트러스 구조부재 ··········································141
제1절 곡선 및 비정형 트러스 구조부재 실험계획 및 방법 ·······141
1. 실험계획 ·······················································································································141
2. 실험방법 ·······················································································································146
3. 실험체 제작 ················································································································147
제2절 실험 및 결과 ·····································································································151
1. 곡선 및 비정형 트러스 실험체 ······································································151
2. 실험결과 ·······················································································································159
제3절 해석결과 ················································································································160
1. 설계 강도 산정 ·········································································································160
2. 3차원 비선형 솔리드 유한요소해석 ····························································162
제4절 소결 ··························································································································165

제8장 결론 ·························································································································166

참고문헌 ··································································································································170

유리섬유를 활용한 비정형 거푸집 ·············································177

고무판을 활용한 가변형 거푸집 ··················································181
Degree
Doctor
Publisher
조선대학교 대학원
Citation
김호연. (2019). 고성능 섬유보강 시멘트복합재 활용 곡선 및 비정형 구조부재의 성능평가.
Type
Dissertation
URI
https://oak.chosun.ac.kr/handle/2020.oak/13935
http://chosun.dcollection.net/common/orgView/200000267406
Appears in Collections:
General Graduate School > 4. Theses(Ph.D)
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