http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 반병열 (검색결과 40 건)
- 무료
- 기관 내 무료
- 유료
-
반병열 大田大學校 産業技術硏究所 1997 산업기술연구소 論文集 Vol.8 No.1
A series of eleven steel reinforced concrete(RC) columns was tested to investigate the effectiveness of external flexural strengthening using carbon fiber sheets(CFS). All columns were tested to failure under compressive loading with uniaxial bending. CFS were bonded to the four faces or the tensile side of the RC columns using a epoxy. CFS is fascinating reinforcement for the structural enhancement of RC members due to its high tensile strength, low weight, corrosion free, and no structural damage. Different strengthening schemes were conducted in an effort to compare modes of failure and study flexural enhancement. The behavior of the strengthened RC columns was represented by the different modes of failure were discussed. The measured load versus deflection at the column midheight, and the load versus tensile strain in CFS were plotted and compared to the results of related columns specimens. The results generally indicated that an increase in both strength and stiffness were achieved for the RC columns strengthened with CFS.
-
-
반병열 大田大學校 産業技術硏究所 1996 산업기술연구소 論文集 Vol.7 No.1
많은 공업재료와는 달리 콘크리트의 응력-변형률 곡선은 뚜렷하게 변형률이 증가함에 따라 강도가 저하되는 거동을 나타낸다. 그리고, 압축력을 받는 콘크리트의 거동은 하중이력에 지배적으로 좌우된다. 싸이클릭 하중을 받는 콘크리트의 응력-변형률 거동은 심한 비선형거동 특성을 보이며, 또한 변형률 약화 거동을 나타낸다. 고도의 비선형적 수치변화와 응력-변형률 지배방정식의 극단적인 민감성 때문에 제안된 모델의 시뮬레이션을 수행하는 동안에 실질적인 물리적 개념을 느끼기 위해서는 그래픽에 의한 결과나 과정의 시각화가 절실히 요구된다. 본 연구는 심도있는 변수연구를 통하여 단조하중과 싸이클릭하중을 받는 콘크리트의 거동특성을 조사하고자 시도되었다. 본 연구에서는 일축압축 싸이클릭하중을 받는 콘크리트의 응력-변형률 거동과 에너지 상관관계을 예측 규명하기 위한 콘크리트 거동 시뮬레이터가 개발되었다. 압축력을 받는 콘크리트 거동의 기본특성과 기존연구의 공통적인 특성들을 조사규명하기 위하여 MATHEMATICA을 이용한 지능적인 과정이 구축되었다. 그리고, 본 연구에서 제안된 컴퓨터모델은 단조하중이나 일축싸이클릭하중을 받는 콘크리트의 스트레인 에너지 관계에 대한 변수연구를 수행하는 것이 가능하다. Unlike many engineering materials, stress-strain curves of concept exhibit a distinct strain softening behavior. The compressive behavior of concrete is dominantly controlled by its load history. The stress-strain behavior of concrete under cyclic loading shows highly nonlinear nature and also reveals stain softening behavior. Due to the highly nonlinear numerical behavior and extreme sensitivity of constitutive equation, graphic visualization of stress-strain curve is demanded to get physical feel substantially during the simulation of proposed model. The present study attempts to investigate the behavioral characteristics of concrete under both monotonic and cyclic load patterns through the in-depth parametric study. The behavioral simulator for both stress-strain response and energy relations of concrete under cyclic compressive uniaxial loading is developed. An intelligent procedure using by MATHEMATICA was built to investigate the unified characteristics and basic features of concrete behavior. And the proposed computer model in this study enables to perform the parametric study for the strain energy relationships of concrete under both monotonic and uniaxial cyclic loadings.
-
반병열 大田大學校 産業技術硏究所 1995 산업기술연구소 論文集 Vol.6 No.2
This paper presents a Computer Aided Simulation System(CASSCO) for analysis and design of square and rectangular reinforced COncrete short columns under combined biaxial bending and axial load. CASSCO has been developed to simulate three dimensional failure surface of concrete columns. Present computer model can provide a load contour and load moment interaction diagram at the required load and/or biaxial moments respectively and is also able to create multiple load contours along the certain axial load. The results of analysis and design for columns subjected to combined biaxial bending and longitudinal loading are able to provide more physical feel in numerical and graphical. Besides, the proposed simulator of failure surface will perform the design task in graphics for the user to ensure that the column section and its reinforcements are sufficient enough to carry the external loads and/or moments.
-
탄소섬유쉬트로 보강된 RC 보의 휨거동에 대한 정착 효과
반병열 대한건축학회 2006 大韓建築學會論文集 : 構造系 Vol.22 No.5
This paper presents experimental results of eleven reinforced concrete (RC) beams strengthened with carbon fiber sheets (CFS). This investigation is to study the effect of CFS end anchorage on the flexural behavior of RC beams strengthened with CFS and to examine how such end anchorage affects strength, deflection, flexural strain, and interfacial shear stress. The major experimental parameter is anchorage types at beam both ends. The test results show that the premature debonding failure of RC strengthened beams with CFS having epoxy mortar patch anchorage can be delayed or prevented for the enhancement of flexural performance. The distribution of the interfacial shear stress along the beam may vary due to end anchorage of externally bonded CFS. Thus, a new analytical model is demanded to predict failure load of the present test results. The anchorage of epoxy mortar patch is considerably effective to delay or to prevent the premature delaminating failure.
-
탄소섬유쉬트로 구속된 콘크리트의 응력-변형도 거동(Ⅰ)
반병열 大田大學校 産業技術硏究所 1997 산업기술연구소 論文集 Vol.8 No.2
This paper presents an experimental study of the stress-strain behavior of concrete confined with carbon fiber sheets under uniaxial compressive loading. Effect of key variables as number of carbon fiber sheets is investigated in the present research program. The stress-strain behavior of concrete cylinders confined with carbon fiber sheets is characterized by the increase of peak stress of concrete, leading to the sudden failure of concrete corresponding to peak stress of unconfined concrete reach, important gains in strength and toughness are observed for the well-confined concrete cylinders. And most of confined concrete cylinders exhibit strain hardening behavior after a strain reach at the maximum curvature on the stress-strain curve.
-
실시간 콘크리트 강도예측 모니터링 통합관리 시스템 설계
김동용,반병열 大田大學校 産業技術硏究所 2010 산업기술연구소 論文集 Vol.21 No.2
A Systematic management of concrete curing is not carried out in the concrete work for the reinforced concrete structures. poor management of concrete curing causes the collapse of forms due to the lack of concrete strength, consequently these leads to seriouse economic loss such a the human loss and the delay of construction period. More effective real time monitoring and managing system is proposed to predict concrete strength which is able to secure the safety of the form collapse. The proposed monitoring system in the present study will be the basic research data to predict concrete strength through the measuring curing temperature of fresh concrete. 철근콘크리트구조의 콘크리트공사에서 체계적인 양생관리가 이루어지지 않고 있어서 콘크리트의강도 부족으로 인한 거푸집붕괴로 인명피해 및 공사기간지연 등의 이차적 피해로 인해 추가비용이 발생하여 경제적 손실이 발생하고 있다. 이에 본 연구에서는 기존의 강도예측방법 보다 더 효율적인 실시간 콘크리트 강도예측 모니터링 통합관리 시스템 설계를 제안하여 거푸집붕괴사고에 대한 안전성을 확보하기 위해 콘크리트양생 온도 계측데이터를 활용한 콘크리트 구조물의 강도예측에 실질적으로 적용될 수 있는 기초자료를 제공하고자 한다.
-
-
-
코리아스칼라연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
