• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2001년도 봄 학술발표회 논문집
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• pp.405-410
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• 2001

To investigate factors influencing the effective width of. SRC column-steel beam joint resisting the moment as strut, six specimens are designed and tested. Parameters in the test are column width, beam height and horizontal tie within beam depth. From the test, using either wide column width or ties, strength and stiffness of joint were developed. The lower beam height the specimens showed the lower moment.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2009년도 춘계 학술대회 제21권1호
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• pp.111-112
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• 2009

두꺼운 기초는 응력교란 구역으로 보 이론에 근거한 설계가 적용될 수 없다. 실제 힘의 흐름을 분산 절점영역과 팬을 이용한 스트럿-타이 이론으로 모델링하였으며, 부재 높이와 철근량 그리고 정착설계 방법을 제안하였다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2009년도 춘계 학술대회 제21권1호
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• pp.115-116
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• 2009

스트럿-타이 모델의 압축요소의 설계압축강도에 대한 이론적인 배경을 검토하여 역학적인 이해가 가능한 모형에 근거한 모형을 제시한다. 기존 모형의 장단점을 분석하여 설계자 입장에서 합리적인 대안을 제시한다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2009년도 춘계 학술대회 제21권1호
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• pp.581-582
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• 2009

Continuous deep girders which transmit the gravity load from the upper wall to lower columns have frequently long end shear spans between the boundary of the upper wall and the face of the lower column. This paper presents the results of tests and analyses performed on three 1:2.5 scale specimens with long end shear spans, (the ratios of shear-span/height : 2.0

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1996년도 가을 학술발표회 논문집
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• pp.433-439
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• 1996

본 논문에서는 스트럿-타이 모델을 이용한 콘크리트 구조물의 설계 및 해석과정에서 필요로 하는 스트럿 유효강도의 결정 및 절점영역 지지력의 검토를 일반적이고 일관성 있게 수행할 수 있는 방법을 제안하였다. 콘크리트 스트럿의 유효강도는 스트럿-타이 모델의 스트럿 영역에 해당되는 유한요소들의 주응력비를 고려하여 결정하였으며, 스트럿의 기하하적인 형상을 이용하여 형성된 절점영역의 지지력은 조합응력을 받는 콘크리트의 파괴기준을 고려하는 비선형 유한요소 해석을 이용하여 검토하였다. 제안한 방법을 예증하기 위해 실험된 철근콘크리트 보의 해석을 스트럿-타이 모델 방법을 이용하여 실시하였다.

• 한국도로학회:학술대회논문집
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• 한국도로학회 2005년도 학술발표회 논문집
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• pp.283-290
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• 2005

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2000년도 가을 학술발표회논문집(I)
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• pp.711-717
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• 2000

This paper presents an experimental study on evaluation of structural performance on corroded reinforced concrete columns under only axial load, combined axial load and lateral load. This test was carried on the twenty-six reinforced concrete columns with $150\times150\times800$mm size subjected to combined axial load and lateral load. Effects of key variables such as the corrosion level, the number of hoop, the corrosion of hoop are studied in this program. The results of this study show that the capacity of column axial force was decreased as corrosion level was increased, especially, rapid development was shown after 10% corrosion level and the maximum moment capacity of column was shown at corrosion level 1.2%, while rapid decrease was shown after 4.3% corrosion level. Also we found that influence of corrosion was decreased to number of tie bar was increased.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2006년도 춘계 학술발표회 논문집(II)
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• pp.21-24
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• 2006

An experimental investigation was earned out to evaluate the fire performance of high strength concrete column made with different section size. Two different high strength concrete columns measuring 3,428mm in height and with the same tie spacing of 150mm were prepared to evaluate the effect of section size of $305{\times}305mm$ and $500{\times}500mm$ on the fire resistance. Compressive strength was 138MPa at the time of fire resistance fire testing. Based on the test result, fire resistance of column with the larger section of $500{\times}500mm$ exhibited the better performance than that of the smaller section of $305{\times}305mm$. The former withstood against the very high temperature over 240minutes, while the latter resisted during 176minutes.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2000년도 가을 학술발표회논문집(I)
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• pp.577-582
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• 2000

This study is aimed to evaluate the shear strength of reinforced concrete deep beams subject to concentrated loads, using a simplified strut-tie model. For the shear strength prediction of deep beams, it is prerequisite to evaluate the effective width of strut and to verify the efficiency factors proposed by MacGregor et al.. The results analyzed by truss models have been compared with those calculated by domestic code for the existing data of 90 deep beam specimens. The shear strength of deep beams were reviewed with respect to concrete strength, the shear span-depth ratio, and the ratio of web reinforcements. The results showed that the shear strength of the proposed model gave a better agreement than the domestic code approach.

• 한국지진공학회:학술대회논문집
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• 한국지진공학회 2005년도 학술발표회 논문집
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• pp.345-352
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• 2005

The purpose of this study is to analyze the stress-strain behavior of confined concrete columns with rectangular section. Uniaxial concentric loading tests of nineteen concrete columns with rectangular section ($150{\times}100$, $250{\times}100$, $350{\times}100\;mm$) were conducted. The main variables are transverse reinforcement volumetric ratio and spacing, cross tie arrangement, cross-section aspect ratio, and concrete strength. From the present experiments, it was found that the increase of transverse reinforcement ratio increases the maximum stress and ductility ratio and the reduction of the spacing of transverse reinforcement also increases the ductility and effective confinement. The increase of the aspect ratio of the cross-section does not influence much the stress-strain behavior of rectangular columns within the aspect ratio range of 3.5. The effect of concrete strength on ductility is also discussed.