헤드철근으로 횡구속된 R/C기둥의 내력에 관한 실험연구

윤승조,서수연,김성수,이대교 대한건축학회지회연합회 2009 대한건축학회연합논문집 Vol.11 No.3

건축물의 안전진단 및 평가방법에 관한 연구

윤승조 忠州大學校 1999 한국교통대학교 논문집 Vol.34 No.2

This purpose is to arrange the kinds, methode and properties on safety inspection, and evaluated methode for safety that have been generally practiced reinforced concrete structure for safety intention. Additionally, it was shown reliable correctable safey inspection and its evaluated methods. Non-deatructive methode and core-tast method are useful for the safey evaluation the exited building and the quality control of concrete. Actually, Schmit hammer mathod and Ultra pulse velosity method have been mostly used, However, there is no any esimated method for the intensity in our country yet. For that reason, it has been used Japanese method for above. As a result, it is judge that very urgently needs to be presented the realistic estimating method under the country condition using the domestic aggregate and cement because the measuring value of non-destructive test is influenced by the various factors including concreate aggregate.

개구부가 있는 전단벽의 균열제어 방법에 관한 연구

윤승조,서수연,김성수,이우진,이건철,오대근 대한건축학회지회연합회 2006 대한건축학회지회연합회 학술발표대회논문집 Vol.2 No.1

Necessity of research about reinforcement details for performance improvement of shearing wall was required along with skyscraperlization of building. Therefore, studied about crack control method of shear walls with opening. Manufactured structure that apply existent reinforcement details and apply developed reinforcement details are structural experimented. As this experiment, could know that apply developed reinforcement details is effective crack control and energy dissipation ability. Angled type is effective in early elastic behavior. But it showed that ductility ability decreased in plasticity zone. Therefore make up for development details and experimental verification are judged that need.

순환굵은골재 치환율에 따른 콘크리트의 부착성능에 관한 실험 연구

윤승조,김성수,이대교,윤두희 대한건축학회지회연합회 2009 대한건축학회연합논문집 Vol.11 No.4

매립형 차음재로 보강된 RC 보의 전단 거동에 관한 실험적 연구

윤승조 한국교통대학교 2014 한국교통대학교 논문집 Vol.49 No.-

Now, in order to create pleasant environments by solving rising house problems, coefficient of land utilization and promote efficient residential life, projects to build apartment-oriented collective houses have been conducted rapidly. Over 70% of recent house construction has had the form of collective house which has been a representative residential form in korea. Wall-type apartments which have gradually been past 20 years started its structural deterioration as well as their function and space. a lot of social issues occur as buildings get deteriorated. Most of all, as serious crimes such as murder, incendiarism, ect. occur by floor shock sound at deteriorated collective houses and apartments, public opinion requiring of including noise and vibration between floors in safety evaluation during rebuilding gets more and more attention. In order to solve these problems, diversified effects are required. Integrating standard floor structure and accepted floor structure, it became mandatory and essential to construct floor structure which meets regular thickness and blocking-function. however, no regulation exists on noise-blocking for previous buildings. This study targets the development of technologies of reclaimed noise blocking engineering to improve endurance which may unify noise-blocking construction against noise and vibration and earthquake-preventive construction during rebuilding. This paper is to find the validity of construction methodology with RC beam additional materials to apply to slab and walls.

中心軸力을 받는 高强度 鐵筋 콘크리트기둥의 擧動에 관한 實驗硏究

尹勝照,崔生吉 충주대 산업과학기술연구소 1993 産業科學論文集 Vol.1 No.-

This paper is to study on the behavior of high-strength concrete columns under uniaxial loads and offer the basis on the effect of rectilinear reinforced in high-strength concrete by compared with the existing model for stress-strain curve of rectilinearly confined concrete. From the experimental study, the following conclusion were obtained. 1) Concrete, When confined with rectangular ties and longitudinal steel, showed a considerable strength gain as well as incresed ductility. In the case of specimens confined with transverse and longitudinal reinforcement, the increse in ductility was up to 30%, strength increment was up to 213%. Therefore, it is desirable to convine the concrete with transverse and longitudinal reinforcement, for the increase ductility and strength. 2) In comparing of difference of ratio of longitudinal steel to the area of cross section if ratio is increased by 78.9%, it is showed that strength of HCAB is increased by 21.4% than that of HCAA1 and that of HCBB is increased by 32% than that of HCBAI. Namely, increment of ratio of area of longitudinal kneel increase bending area with cover concrete as much as ratio of area of longitudinal steel, delay seperation of cover concrete and also increase effective confinement area of concrete, so that strenth of specimens was thought to be increased. Consequently, ratio of area longitudinal steel is consider as a variable which influence the behavior of reinforced concrete columns.

螺旋補强筋이 鐵筋 콘크리트 기둥에 미치는 영향에 관한 實驗的 硏究

尹勝照 충주대학교 1990 한국교통대학교 논문집 Vol.24 No.-

This study is about the affect to the confinement of spirally lateral in the reinforced concrete columns subjected to the uniaxial compressive loading and an attempt to provide a basis for the method to analyze the ultimate strength. The primary concern of this study is to propose the ultimate strength formula for the spirally lateral reinforced concrele based on the results of this test. The approach of this study was to test total 108 specimens which were composed of variables including the concrete strength, the specimen size and the spiral pitch, then to analyze and compare the result with another.

변단면 나사 가공방법에 따른 인장강도 변화에 대한 연구

윤승조,김상구 대한건축학회지회연합회 2012 대한건축학회연합논문집 Vol.14 No.1

기계적이음방법 중 철근자체의 섬유상조직을 손상시키지 않고 철근 외부의 기형적인 철근의 마디와 리브를 상온에서 스웨이징함으로써 철근의 고유의 기계적성질을 유지하는 단부스웨이징방법이 개발되었다. 또한 우리나라의 철근생산방식을 살펴보면 2001년까지 철근에 화학성분(V, Nb 등)을 첨가하는 방식이었으나, 2001년부터는 V나 Nb을 첨가하지 않고 압연 후 급속 냉각에 의해 제조하는 Tempcore 철근이 제조된다. 이러한 철근생산방식의 변화로 인하여 기계적 이음 시 발생할 수 있는 열처리 조직의 손상에 대한 연구가 미비한 실정이다. 따라서 철근제조방식에 따른 철근의 종류와 나사선피치 간격에 따른 인장시험을 기초로 고강도철근(SD500)에 적합한 테이퍼 절삭 나사이음 성능평가를 위해 나사가공방법에 따라 커플러의 재질 및 커플러의 길이, 나사길이를 변화하여 항복강도 및 인장강도를 통해 전조나사를 이용한 테이퍼 절삭나사 기계적이음의 기초적인 자료를 제시하고자 한다.

레디믹스트콘크리트에 순환굵은골재를 치환한 R/C 보의 장기처짐에 관한 사용성 검토

윤승조,서수연,이우진,강성덕,김대영,민석환 대한건축학회지회연합회 2006 대한건축학회지회연합회 학술발표대회논문집 Vol.2 No.1

In accordance with the national trend, although research about deflection of reinforced concrete that use nature aggregate in domestic research had been studied, they have prescribed to use the recycled aggregate compulsorily in case of over construction scale as an applicable construction of "Law about contract that the nation should be a contracting party" since 2005. However, although it has still obligated to use the recycled aggregate based on "Recycled aggregate quality standard" by Construction and Transportation Ministry, actually its study on long-term deflection of recycled aggregate is an unsatisfied situation. Therefore, the purpose of this study is to resolve the technical problems for cycling concrete through its experiment and analysis of long-term deflection by the substitution rate of recycled aggregate.

EVA에멀죤 使用量 變化에 따른 시멘트 몰탈의 防水特性分析에 關한 實驗的 硏究

尹勝照 忠州大學校 1991 한국교통대학교 논문집 Vol.25 No.-

Using some kinds of standard sand, fine aggregate formed by natural sand and variety of EVA amount, all situation analysing results on waterproof property of cement mortar are as belows; 1) Flow value was maximum with the EVA amount 5-10% and strikingly fell-off with 40%. 2) For the strength comparison of each aggregate, natural sand is higher than standard sand with 0-40% ; as a compression testing case shown above, results in the all section and another on tension and bending strength have come out the same at the lower EVA amount used. 3) Waterproofing/absorption value is minimum with natural sand 20% and maximum with natural sand 40%.