영구동토 급속안정화를 위한 롤타입강재매트의 모델링과 해석(I)

문도영(Do Young Moon),강재모(Jae Mo Kang),이장근(Janggeun Lee),이상윤(Sang Yoon Lee),지광습(Goangseuo Zi) 한국지반신소재학회 2014 한국지반신소재학회 논문집 Vol.13 No.4

본 논문에서는 표준트럭하중을 받는 연약지반에 놓인 롤타입 강재매트의 모델링과 해석을 수행하였다. 롤 타입 강재매트는 접근성이 제한된 동토지역에서 손쉬운 현장운반을 위해 원형으로 접을 수 있는 강재매트를 의미하며, 동토지반의 융해로 형성되는 연약지반을 통과하는 비포장도로의 급속보강을 위해 개발되었다. 해석 모델은 강재매트 연결부의 비선형적 거동특성을 모사할 수 있는 연결요소, 강재매트의 휨강성을 갖는 쉘요소, 지반특성을 고려한 스프링 구속으로 구성된다. 또한 각 해석요소들의 구조적 거동은 각 모델링 단계에서 실험과 해석을 통해 검증되었다. 링크요소가 없는 빔과 쉘 요소해석이 수행되었으며, 본 연구에서 제시된 해석모델의 결과와 비교하였다. 해석결과, 본 연결부를 고려한 쉘 해석모델의 수직 처짐 결과가 다른 모델에 비하여 상당히 큰 것으로 확인되었다. 따라서, 느슨한 모래지반에 놓인 롤 타입 강재매트의 해석모델은 면밀한 변수해석 연구에 근거하여야 함을 알 수 있다. Finite element modelling and analysis were conducted for the roll-type steel mats which were placed on loose sand and subjected to a standard truck wheel load in this study. The roll-type steel mats mean that the steel mats can be folded as a circle shape for the carrying to fields in cold regions where workability is limited and are developed for a rapid rehabilitation method for roadway across soft ground which is caused by thawing during the summer season in cold regions. The model is composed of link elements to simulate nonlinear behavior of connections between steel mats, thick shell elements to have flexural stiffness of the steel mats, and springs to simulate characteristics of foundation soils. The structural behaviors of the shell, link elements, and springs were verified at each modelling step through experiment and analysis. Beam and shell analysis without the link elements were conducted and compared to results obtained from the model presented in this study. Significant vertical displacement is shown in the shell model with hinge connections. Therefore, the results demonstrate that the analysis model for the roll-type steel mats on loose sand needs further detail parametric studies.

韓國 婚禮에 나타난 諸習俗의 象徵性 考察

姜在哲(강재철) 비교민속학회 1999 비교민속학 Vol.16 No.-

大會辭

姜在哲(강재철) 비교민속학회 2001 비교민속학 Vol.21 No.-

1259년 삼별초의 춘주(春州) 천곡촌전투(泉谷村戰鬪) 승전과 그 역사적 성격

강재광(姜在光) 한국역사연구회 2021 역사와 현실 Vol.- No.121

The Battle of Cheon’gok-chon[泉谷村戰鬪] in the Chunju area, which took place in March 1259(46th year of King Gojong’s reign), was the last battle to be waged against the Mongol forces in the Gyoju-do(交州道) province. In this article, several aspects behind the contribution of the Shin’eui-gun(神義軍) army and the Byeolcho(別抄) forces to the victory of this battle are newly confirmed and highlighted. Attempted in this article for the first time ever is pinpointing the location of Chunju Cheon’gok-chon. Based on an analysis of the ‘Geography(地理志)’ and ‘Military(兵志)’ sections in Goryeo-sa(高麗史), this author believes that Cheon’gokchon was located close to the Gamcheon station[甘泉驛] at Hwengcheon-hyeon(橫川縣), which was one of Chunju’s unmanned Hyeon units(Sokhyeon, 屬縣). This speculation is based on several reasons: First, in the entire region that was under Chunju’s supervision, Hwengcheon-hyeon was in charge of the highest number of stations, and therefore was a focal point in local traffic and transportation. Second, the image of the name of Cheon’gok-chon, which has the meaning of ‘fountain valley,’ actually resembles the image of the name ‘Gamcheon,’ as ‘Gamcheon’ can be translated into ‘Sweet fountain.’ Another point raised in this article is the fact that the Chunju Cheon’gok-chon battle was the first ever battle where the Shin’eui-gun army and the Ya-byeolcho patrols combined forces in a coordinated joint effort to defeat the Mongol troops. Five Shin’eui-gun soldiers posed as emissaries sent from Mongol leader Jariltai[車羅大] and deceived the enemy troops, while the Ya-byeolcho patrols ambushed the Mongols. The strategy proved useful and led to the victory at Cheon’gok-chon. Ultimately emphasized in this article is the fact that the Cheon’gok-chon battle was a successful revenge to a prior provocation in which Jo Hwi(趙暉), the Chonggwan commander of Ssangseong Chonggwan-bu authorities, arbitrarily murdered the Goryeo envoy in January 1259. What should also be noted is the fact that the Cheon’gok-chon victory eventually led to the truce and ceasefire between Goryeo and the Mongols, as the Goryeo Crown prince paid a visit to the empire right after the battle, in April the same year.

Correlation between Serum Total Testosterone and the AMS and IIEF Questionnaires in Patients with Erectile Dysfunction with Testosterone Deficiency Syndrome

강재일,함병국,오미미,김제종,문두건 대한비뇨의학회 2011 Investigative and Clinical Urology Vol.52 No.6

Purpose: This study was conducted to investigate the relationship between serum total testosterone levels and scores on the Aging Male’s Symptom (AMS) scale and the International Index of Erectile Function (IIEF) in men with erectile dysfunction with testosterone deficiency syndrome (TDS). Materials and Methods: From January 2005 to July 2008, 134 patients who complained of sexual dysfunction such as erectile dysfunction or decreased libido as the main symptoms of TDS with serum total testosterone levels less than 3.5 ng/ml were evaluated by independent t-test and linear regression analysis, respectively. Patients with treated hypogonadism within 6 months, with a history of taking a PDE5 inhibitor or an antidepressant for a depressive disorder, or who had metabolic syndrome were excluded from this study. Results: The AMS scale and its 3 subdomain scores were not significantly correlated with the total testosterone level. By contrast, the total IIEF score and the score of each IIEF domain except sexual desire showed a weakly significantly positive correlation with serum total testosterone. Conclusions: In TDS patients with erectile dysfunction, there was a low relationship between serum total testosterone levels and the AMS scale and a weakly positive correlation between total testosterone levels and all IIEF domains except sexual desire. There was a low relationship between the AMS scale, the sexual desire domain score of the IIEF, and total testosterone. We should understand these limitations when evaluating patients with erectile dysfunction with TDS. New scales should be developed for the evaluation of erectile dysfunction in these patients. Purpose: This study was conducted to investigate the relationship between serum total testosterone levels and scores on the Aging Male’s Symptom (AMS) scale and the International Index of Erectile Function (IIEF) in men with erectile dysfunction with testosterone deficiency syndrome (TDS). Materials and Methods: From January 2005 to July 2008, 134 patients who complained of sexual dysfunction such as erectile dysfunction or decreased libido as the main symptoms of TDS with serum total testosterone levels less than 3.5 ng/ml were evaluated by independent t-test and linear regression analysis, respectively. Patients with treated hypogonadism within 6 months, with a history of taking a PDE5 inhibitor or an antidepressant for a depressive disorder, or who had metabolic syndrome were excluded from this study. Results: The AMS scale and its 3 subdomain scores were not significantly correlated with the total testosterone level. By contrast, the total IIEF score and the score of each IIEF domain except sexual desire showed a weakly significantly positive correlation with serum total testosterone. Conclusions: In TDS patients with erectile dysfunction, there was a low relationship between serum total testosterone levels and the AMS scale and a weakly positive correlation between total testosterone levels and all IIEF domains except sexual desire. There was a low relationship between the AMS scale, the sexual desire domain score of the IIEF, and total testosterone. We should understand these limitations when evaluating patients with erectile dysfunction with TDS. New scales should be developed for the evaluation of erectile dysfunction in these patients.

시도 의회와 시군구 의회의 관계

강재호(姜再鎬) 한국지방정부학회 2003 지방정부연구 Vol.7 No.3

大會辭

姜在哲(강재철) 비교민속학회 2004 비교민속학 Vol.0 No.27

大會辭

姜在哲(강재철) 비교민속학회 2003 비교민속학 Vol.25 No.-

大會辭

姜在哲(강재철) 비교민속학회 2002 비교민속학 Vol.23 No.-

인천학문헌서지①

강재호(康在鎬) 새얼문화재단 1995 황해문화 Vol.8 No.-