http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
임성윤,Lim, Seong-Yoon 한국농공학회 2014 한국농공학회논문집 Vol.56 No.2
New technology and construction methods in civil engineering area have been noticeably improved associated with the industrial development. However, thicknesses of a lift is strictly specified for subgrade and roadbed embankment as 20 cm and 30 cm in the specification of Korea Highway. Since there has been a problem to get enough amount of soils to be used for compaction, the rocks have been replaced for those. However, there is no guideline for the quality control of rock while changing compaction efficiency of equipment and physical properties of reck while changing compaction method such as thicknesses of a lift, number of compaction and etc. The main objective of this research is to establish the specification for the rock compaction method of embankment which including thickness of lift and quality control method in Korea Expressway.
LWDT와 Geogauge를 이용한 성토지반의 다짐관리 현장적용성 평가
임성윤,송호성,류희룡,Lim, Seong-Yoon,Song, Ho-Sung,Ryu, Hee-Ryong 한국농공학회 2016 한국농공학회논문집 Vol.58 No.4
PBT (Plate Bearing Test) is a commonly used compaction estimation used to provide basal support for embankments. This study presents the results from experimental evaluations PBT, LWDT (Light Drop Weight Tester) test and Geogauge test with embankment materials which consist in sandy soil, crushed stone and rock. The results of this study indicate that the regression analyze results (r) from test results between Young's modulus and $k_{30}$, $E_v$ are 0.385 and 0.111~0.496, estimated very lack of correlation. The Geogauge is frequency vibration from machine to underground. Geogauge can not measure to accuracy test results when it is used on ground of the rock or crushed stone. The regression analyze results (r) from $E_v$ and Dynamic modulus are 0.502~0.847, different estimated by calculate method, as it were, when calculate $E_v$, least square method are appeared more accuracy than gradient of secant.
임성윤,송창섭,Lim, Seong-Yoon,Song, Chang-Seop 한국농공학회 2010 한국농공학회논문집 Vol.52 No.3
Reduction factor for installation damage required to calculate design strength of geogrid used in MSEW(mechanically stabilized earth wall) design is usually obtained in the field test simulating real construction condition. However, damages occurred in geogrid during backfill work are influenced by many factors such as polymer types, unit weight per area, backfill construction method and gradation of backfill material and field test considering these factors demand lots of time and costs. In this study, factors affecting installation damage are analyzed and empirical method to evaluate reduction factor for installation damage using maximum particle size in backfill material is suggested.
임성윤(Lim Seong-Yoon),김경석(Kim Kyung-Suk),최영철(Choi Young-Chul) 한국토목섬유학회 2008 한국토목섬유학회 학술발표회 Vol.2008 No.4
Recently, reinforced soil walls have been extensively used because these technologies have advantages such as economical efficiency and easy construction. In this paper, we attempt to the analysis which is used in the design of flexible reinforced earth retaining walls presently. As a result, it was found that the used of Flexibility wall resulted in different outcomes in vertical and horizontal earth pressure of reinforced earth retaining walls.
임성윤 ( Lim Seong Yoon ),최영철 ( Choi Yung Chul ),송창섭 ( Song Chang Seob ) 한국농공학회 2007 한국농공학회 학술대회초록집 Vol.2007 No.-
The main objective of this study is to establish the specification of the lift thickness for embankment construction with respect to the soil properties and the compaction energy of equipments. Also, the algorithm is developed to get the accurate results from the laboratory tests. The physical and mechanical properties of soils after compaction has been selected and investigated to establish new guide of compaction method and improve previously used quality control for compaction. In this study, the guidance of compaction control is suggested based on mechanical characteristics of soils obtained from lab experiment results. The algorithm to estimate maximum density of soils is developed for the field application. This study provides the standard of lift thickness associated with the compaction energy of equipment, mechanical characteristics of soils and improves scientific control of compaction with respect to the applicability in construction fields.
임성윤 ( Lim Seong-yoon ),송창섭 ( Song Chang-seob ),류태진 ( Lyu Tae-jin ) 한국농공학회 2005 한국농공학회 학술대회초록집 Vol.2005 No.-
Since most soils exist above the ground water table, negative pore pressure exist in unsaturated soils. Negative pore water pressure in unsaturated soil affects the soil structure and degree of saturation and it is important for accurate evaluation of unsaturate flow and behavior. This negative pore pressure is called a matric suction which causes an increased shear strength. Therefore, it is required that the effect of increase in the shear strength should be included in a geotechnical analysis. From the test result, the influence of net confining pressure and matric suction on the shear strength was analyzed and strength parameter was increased with matric suction increase and a unliner relationship was found to relate matric suction and shear strength.
임성윤 ( Seong-yoon Lim ),김유용 ( Yu-yong Kim ),유석철 ( Seok-cheol Yu ) 한국농업기계학회 2021 한국농업기계학회 학술발표논문집 Vol.26 No.2
2021년 9월 현재 원예특작시설 내재해 고시(농림축산식품부 고시 제2019-44호)에 등록된 인삼재배사는 목재 15종, 철재 5종으로 총 20종이 있다. 목재 15종의 인삼재배사의 경우 국내에서 생산되는 낙엽송과 외국에서 수입되는 아쿠송이 대부분을 이루고 있다. 그러나 낙엽송의 경우 생산이 거의 않되히고 있으며 수입 아크송의 경우 외래 병충해 발생의 이유로 인하여 수입도 잘 되고 있지 않은 실정이다. 따라서 목재를 대체하기 위한 구조재를 구하고 있는 실정이다. 영농 폐비닐 발생량은 2017년 약 314,420톤에서 2018년 약 318,775톤으로 내년 증가하고 있다. 이에 본 연구에서는 자원 재순환 측면과 목재를 대신할 수 있는 폐비닐을 이용한 재생플라스틱 구조재에 대하여 굽힘강도 실험을 실시하였다. 굽힘시험은 KS B 0804으로 실시하였으며, 굽힘시헝을 위한 받침 사이의 거리는 17cm, 시험편의 길이는 30cm, 심봉의 지름는 5cm로 설정하여 실험을 실시하였다. 또한 하중 제어방식을 변위제어 방식을 채택하였으며, 재하속도를 5mm/min로 하였다. 시험편은 초기에 만들어진 상태와 3개월이 지난 현장에 채취한 상태 두 가지의 재료를 비교하였다. 또한 지상부와 토양에 매립된 부분의 두 경우에 대하여도 비교를 하였다. 초기에 만들어진 시험편의 굽힘강도는 약 6,900N으로 나타났으며 3개월이 지난 후 현장에서 채취한 시험편의 경우는 지상부 6,600N, 토양 매립부 6,500N으로 나타났다. 본 연구는 차후 3년 간 3개월 간격으로 현장 시험편 채취하여 경과일에 따른 폐비닐을 이용한 재생 플라스의 굽힘강도를 분석하여 목재를 대용할 수 있는 인삼 재배사의 구조재로서의 적용성을 판단하는데 기초자료로 활용하고자 한다.
하중 제어법을 이용한 파이프 줄기초의 현장 인발저항 특성
임성윤 ( Lim Seong-yoon ),김명환 ( Kim Myeong-hwan ),김유용 ( Kim Yu-yong ),유석철 ( Yu Seok-chul ),김석진 ( Kim Seok-jin ),임재삼 ( Lim Jae-sam ) 한국농공학회 2018 한국농공학회논문집 Vol.60 No.4
Institutional inertia anti-disaster standard was presented mainly on the upper surface, it is necessary to improve to the soil type standard and uplift the resistance standard greenhouse that are vulnerable to strong winds. In this study, we carried out a field test using the load control method in order to evaluate the uplift resistance of continuous foundation of greenhouse with different depths of the rafters. Institutional inertia anti-disaster standard of greenhouse foundation did not protect the greenhouse structure from the damages caused by strong winds and heavy snow. Therefore, field tests for behavior characteristics of continuous greenhouse foundation were carried out to ensure stable facility cultivation. The field test condition was evaluated using different embedded depth as follows: 30cm, 40cm, 50cm and spacing 50cm, 60cm, 70 cm. As a result of the uplift resistance field tests using the load control method, the minimum uplift resistance was found to be over 90kg and uplift resistance displacement was 9.4mm. Uplift resistance of the continuous greenhouse foundation was in the range of 90-180 kg according to embedded depth and spacing. Using the test condition, there was no constant trend in the uplift resistance.