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띠형 섬유보강재가 적용된 블록식 보강토옹벽의 안정성 평가
이광우,조삼덕,한중근,홍기권 한국토목섬유학회 2012 한국지반신소재학회 논문집 Vol.11 No.3
본 연구에서는 현장시험 및 계측결과를 바탕으로 인발저항을 향상시킬 수 있는 띠형 섬유보강재가 적용된 블록식 보강토옹벽의 안정성 및 거동특성을 평가하였다. 연구대상 현장에 적용된 전면벽체는 경관연출이 가능하며, 보강재는 수동저항부에 의한 인발저항 향상 효과를 고려할 수 있다. 현장시험은 토압, 전면벽체의 수평변위 및 보강재 인장변형률에 대한 계측을 수행하였다. 현장시험 결과, 전면벽체에 작용하는 토압은 적용된 보강재의 토압분산 효과에 기인하여 이론토압에 비하여 낮은 토압이 발생하였으며, 전면벽체의 수평변위는 경험적 변위기준을 만족하는 것으로 분석되었다. 또한 띠형 섬유보강재의 인장변형률은 보강토옹벽의 안정성에 큰 영향을 미치지 못하는 것으로 확인되었다. 따라서 본 연구에서 적용된 수동저항부를 고려한 띠형 섬유보강재는 블록식 보강토옹벽의 적용에 문제가 없는 것으로 나타났으며, 이를 적용한 블록식 보강토옹벽은 구조적으로 안정성을 유지하기 때문에, 공용이 가능한 것으로 평가되었다. This paper describes the stability evaluation of reinforced earth wall using geosynthetic strip based on field test. The wall facing, which is applied in field, is able to present excellent scenery, and the reinforcement has improvement effect of pullout resistance based on rounded band anchor. The measurement is conducted according to construction elapsed time of structure for earth pressure, horizontal displacement of wall facing and reinforcement strain in field test. The evaluation results show that the measured earth pressure is less than theoretical earth pressure due to dispersion effect of earth pressure by geosynthetic strip. The horizontal displacement of wall facing is also satisfied a empirical criteria. The measured strain of reinforcement had nearly no effect on stability of the reinforced earth wall. Therefore, the geosynthetic strip with rounded band anchor can be applied in the reinforced earth wall, and the reinforced earth wall with geosynthetic strip can be commonly used in field because it has a structural stability.
이광우 대한영상의학회 1986 대한영상의학회지 Vol.22 No.3
The infradiaphragmatic type of Total Anomalous Pulmonary Venous Return(TAPVR) is a rare congenital cardiac anomaly which usually results in death during the period of early infancy. A two month-old baby boy with cyanosis and respiratory distress was suspected of having a TAPVR clinically and two-dimensional echocardiographic findings were compatible with the infradiaphragmatic type of TAPVR. The subsequent cardian catheterization and dineangiogram revealed the common pulmonary vein conected with portal vein and inferior vena cava in the infradiaphragmatic area with obvious obstruction. The surgery and the autopsy confirmed the preoperative diagnosis. Among infants presenting pulmonary venous congestion in the newborn period, TAPVR below the iaphragm should be one of the important diagnostic considerations.
이광우 대한영상의학회 1987 대한영상의학회지 Vol.23 No.1
Granulomatous inflammation of the stomach similar to gastric neoplasm may occur in disseminated sarcoidosis, allergic granulomatosis, Crohn's, a variety of infectious diseases, as a reaction to foreign material, and in the absence of ay of the above as isolated granulomatous gastritis. In the foreign body inducd granulomatous inflammation of the stomach, beryllium, kaolin, talcum. suture material and cfood can be causative materials. It is the intent of thiscase report to add to the list of more commonly occurring ntramural gastric masses, the remote possibility of a foreign body granuloma. So radiologist should be aware of this entity and include it in their differential diagnosis of intramural gastric masses.