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RISS 인기검색어
- 검색키워드
- 저자 : 심종성(Sim, Jong-Sung) (검색결과 331 건)
- 무료
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- 유료
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심종성,Sim, Jong Sung Korean Society of Civil Engeneers 1989 대한토목학회논문집 Vol.9 No.2
변형률 속도를 고려할 수 있는 철판과 콘크리트의 재료특성모델을 이용하여 여러가지 하중 재하속도를 받는 철근콘크리트부재의 압축 및 휨 거동 예측이 가능한 해석모델을 개발하였다. 개발된 철근콘크리트부재 해석모델을 적용한 해석 결과는 정적하중에서부터 동적하중을 받는 철근콘크리트부재의 실험결과와 비교적 양호하게 일치하였다. The strain rate-sensitive constitutive models of steel and concrete were incorporated into a refined analytical procedure for loading rate-dependent axial/flexural analysis of reinforced concrete beam-columns. The predictions of the analytical technique compared well with both quasi-static and dynamic test results on reinforced concrete elements.
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A Study on the Sensitivity of Reinforced Concrete Element Design Factors
심종성,Sim, Jong Sung Korean Society of Civil Engeneers 1989 대한토목학회논문집 Vol.9 No.4
변형율 속도를 고려할 수 있는 철근콘크리트부재 해석모델을 이용하여 서로 다른 설계인자를 가지는 철근콘크리트부재의 하중 재하속도에 따른 민감성을 연구하였다. 수행된 연구결과에서 정적하중에서부터 동적하중을 받는 부재의 압축거동 및 휨거동특성은 서로 상이함을 발견하였다. 본 논문에서는 또한 하중재하속도에 따른 철근콘크리트부재의 압축강도 및 휨강도를 계산할 수 있는 설용적인 설계공식을 제안하였다. A strain rate-dependent element model was used to study the loading rate-sensitivity of R/C beams and columns with different design factors. Conclusions were derived regarding the differences between the element axial/flexural performance under impulsive and quasi-static loads. Practical design formalas for predicting the loading rate-dependent axial and flexural strengths of R/C elements were also suggested.
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탄소섬유쉬트로 보강된 철근콘크리트보의 계면박리에 대한 해석적 연구
심종성,배인환,Sim, Jong-Sung,Bae, In-Hwan 한국콘크리트학회 1999 콘크리트학회지 Vol.11 No.2
The purpose of this study is to analyze the interface debonding of RC beams strengthened by carbon fiber sheet(CFS). The behavior of damaged RC beams strengthened with CFS is analytically investigated next using linear elastic fracture mechanics(LEFM) approach and the finite element method. The study includes an investigation of the separation mode by interface fracture of the strengthening materials due to the interfacial shear and normal stresses. The numerical method is presented to obtain the value of interfacial fracture parameter such as the strain energy release rate. Based on the results of this study, it is found that the critical case occurs when the interfacial cracks occur within a short region of the flexural crack. The CFS strengthening has not an adequate factor of safety against interfacial debonding of CFS. Furthermore, for the thicknesses of the adhesive studied[1mm~3mm], it is no noticeable effect on the strain energy release rate.
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순환골재의 사용성 확대를 위한 연구: 원심력콘크리트로의 적용
심종성,박철우,박성재,김현중,김태광,이만석,Sim, Jong-Sung,Park, Cheol-Woo,Park, Sung-Jae,Kim, Hyun-Jung,Kim, Taeg-Wang,Lee, Man-Suk 한국건설순환자원학회 2006 한국건설순환자원학회지 Vol.2 No.1
Along with recent improvement of recycling technique, the quality of the recycled concrete aggregate have become very competitive to the natural concrete aggregate. Therefore, a practical use of the recycled concrete aggregate may be possible for structural members. Majority studies about the recycled concrete aggregate was emphasized a limitation of fundamental study concerned with a strength characteristics and durability of the recycled aggregate concrete, there is use for the structural members. Therefore, for the extension of application of recycled concrete aggregate, this investigation verifies the strength characteristics recycled concrete aggregate of the spun-concrete products with various coarse and fine recycled aggregate replacement ratio(coarse recycled aggregate: 0%, 20%, 40%, 60%, 100%; fine recycled aggregate: 0%, 30%, 60%, 100%) and with addition of cellulose fibers(0%, 0.01%, 0.03%, 0.05%, 0.08%). From the test results, The strength of spun concrete used with recycled aggregate [NR specimen], was measured as 72MPa, was found to be very approximately to the strength of spun concrete used with the natural aggregate(NN specimen), was measured as 74MPa, when only fine aggregate was replaced with the recycled. Therefore, the fine recycled concrete aggregate can be successfully used in the spun high strength concrete product. The compressive strength of all specimens used the specialty cellulose fiber were measured as about 70M Pa, however, the increasement of the specialty cellulose fiber content is showed to decrease compressive strength of spun concrete. Therefore, it is anticipated that the specialty cellulose fiber can be applied to the various spun concrete products.
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심종성(Sim Jongsung),이광명(Lee Kwangmyong),문도영(Moon Doyoung),박진호(Park Jinho) 한국구조물진단유지관리학회 2003 한국구조물진단학회 학술발표회논문집 Vol.- No.-
Recently, there have been fire accidents in the domestic and foreign. These accidents have been developing a lot of interest in behavior and performance of structures after fire attack Fire is a kind of load that brings a big displacement in short time. Especially, properties of the used materials are controlled by temperature, therefore the analysis of structures under severe condition like fire attack is very complex for civil engineer. This paper deals with heat transfer and thermal stress analysis of underground box structure after fire attack using ABAQUS. which is called general structure analysis program, We presented a variable and basic material properties that are needed for description of Fire Load and examined behavior of underground box structure in a fire from the results of analysis.
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