http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
임홍철 ( Rhim Hong-chul ),이규동 ( Lee Kyu-dong ),박성모 ( Park Sung-mo ),임병호 ( Yim Byung-ho ),이민섭 ( Lee Min-sup ) 한국구조물진단유지관리공학회 2005 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.9 No.2
재건축 현장에서의 실 구조물을 대상으로 하는 중성화 실험으로 코어 채취를 통해 얻어낸 중성화 정도와 중성화 추정식과의 값을 비교하고, 중성화와 건물 위치 간의 관계를 규명하여 최종적으로는 리모델링 시 구조물의 잔존내구연한을 판별하는데 사용가능한 모델을 구축하도록 한다. Carbonation test of concrete have been conducted to investigate the degree of carbonation from different concrete members. Reconstruction site was selected because core sampling of concrete could be made without affecting the integrity of the building because it would be demolished after tests. The results have shown that carbonation occurred more in the concrete members located inside the building to compared the ones located near the outer side of the building
임홍철 ( Rhim Hong-chul ),우상균 ( Woo Sang Kyun ),송영철 ( Song Young-chul ) 한국구조물진단유지관리공학회 2004 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.8 No.1
비파괴 검사에 널리 쓰이는 Ground Penetrating Radar (GPR)의 콘크리트 내 철근과 공동 탐사 성능을 알아 보기 위해, 일련의 실험을 실시하였다. 레이더를 이용한 탐사는 사용하는 안테나의 주파수에 가장 큰 영향을 받으며, 실험에서는 900MHz. 1 GHz, 1.5 GHz 3개의 안테나를 사용하였다. 콘크리트 기본시편의 크기는 1,000 mm (길이) × 1,000 mm (폭) × 140 mm (두께)이고, 철근과 공동의 크기와 매립 위치를 바꾸어 실험하였다. 모든 경우에서 철근과 공동을 성공적으로 탐사하였으며, 각 안테나 주파수에서의 특성을 파악하였다. 또한 상업용 레이더 시스템의 영상 처리 결과를 향상시킨 결과를 다루었다. Ground Penetrating Radar (GPR) has been used to image inside concrete specimens embedded with steel bars and delamination. An imaging algorithm has been developed to improve measurement output generated from a commercial radar system. For the experiments, laboratory size concrete specimens are made with the dimensions of 1,000 mm (W) x 1,000 mm (L) x 140 mm (D). The results have shown improved output of the radar measurements compared to commercially available processing methods.
단면형상이 레이더 측정에 미치는 영향 및 영상화 기법에 대한 연구
임홍철(Rhim Hong-Chul),손병오(Son Byung-Oh),김유석(Kim You-Seok) 대한건축학회 2003 大韓建築學會論文集 : 構造系 Vol.19 No.6
Radar is widely used as a method of nondestructive testing of structures. A lot of experimental studies were made to develope radar method. In this study, brief theory about radar and properties of electromagnetic wave travelling inside concrete are introduced which is fundamental to understand radar method. The purposes of this study are to verify effect of concrete specimen geometry on radar measurement and to propose a signal processing method to image delamination and steel bars embedded in concrete. The experimental data were obtained using Inverse Synthetic Aperture Radar (ISAR) with the frequency bandwidth of 2∼3.4 GHz and 3.4∼5.8 GHz. All data were processed by means of frequency combination. Computer programs used in this study include windowing and Inverse Fourier Transform.
PC계단 공법 성능개선을 위한 현장사례에 근거한 요소기술 분석
임홍철(Rhim Hong-Chul),김욱종(Kim Ook-Jong),조홍덕(Cho Hong-Duk),송지윤(Song Jee-Yun) 대한건축학회 2008 大韓建築學會論文集 : 構造系 Vol.24 No.6
Stairways made by Precast Concrete(PC) are emerging as alternative to traditional Reinforced Concrete(RC) stairways, PC stairs can reduce construction time and cost with improved quality compared to RC stairs. The existing PC stairway construction method often requires the placement of surrounding walls and PC stairways at the same time to secure connection between the two elements. The method described in this paper has the advantage of allowing the construction of walls and stairways in sequence, not together, this is possible because of developed technique for the connection and the other convenient ways for the PC stairways. Application of the method in various construction sites is analyzed and studied for further development.
임홍철 ( Rhim Hong-chul ),조영식 ( Cho Young-sik ) 한국구조물진단유지관리공학회 2006 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.10 No.2
The purpose of this study is measuring of exsiting steel stress using magnetostriction. A successful application of magnetostriction method for measuring steel stress depends on the linearity of the relationship between the elastic and magnetic response due to loading. Linearity has been found out recent studies. Also geomagnetic field and load history is a key parameter. To investigate the correlation between magnetostriction and two key parameter, different diameter steel bars loaded in tension under uniaxial loading was measured magnetic field in three direction (perpendicular, north, east-west) with gauss meter. Results showed relationship between geomagnetic field, load history and magnetic field.
[제6분과/연구위원회 특별 Session] Nondestructive Testing of Concrete Using Electromagnetic Method
임홍철(Rhim Hong-Chul),우상균(Woo Sang-Kyun),송영철(Song Young-Chul) 한국구조물진단유지관리학회 2004 한국구조물진단학회 학술발표회논문집 Vol.- No.-
비파괴 검사에 널리 쓰이는 Ground Penetrating Radar(GPR)의 콘크리트 내 철근과 공동 탐사 성능을 알아 보기 위해, 일련의 실험을 실시하였다. 레이더를 이용한 탐사는 사용하는 안테나의 주파수에 가장 큰 영향을 받으며, 실험에서는 900MHz, 1GHz, 15Ghz 3개의 안테나를 사용하였다. 콘크리트 기본시편의 크기는 1,000mm(길이) X 1,000mm(폭) X 140mm(두께)이고, 철근과 공동의 크기와 매립 위치를 바꾸어 실험하였다. 모든 경우에서 철근과 공동을 성공적으로 탐사하였으며, 각 안테나 주파수에서의 특성을 파악하였다. 또한 상업용 레이더 시스템의 영상 처리 결과를 향상시킨 결과를 다루었다. Ground Penetrating Radar (GPR) has been used to image inside concrete specimens embedded with steel bars and delamination. An imaging algorithm has been developed to improve measurement output generated from a commercial radar system. For the experiments, laboratory size concrete specimens are made with the dimensions of 1,000 mm (W) x 1,000 mm (L) x 140 mm (D). The results have shown improved output of the radar measurements compared to commercially available processing methods.