A Simplified Soil-Structure Interaction Analytical Technique of Embedded Structure and Structure on Layered Soil Sites

조양희,이용일,김종수,Joe, Yang Hee,Lee, Yong Il,Kim, Jong Soo Korean Society of Civil Engeneers 1987 대한토목학회논문집 Vol.7 No.2

지진하중(地震荷重)에 대한 구조물(構造物)의 동적(動的) 거동(擧動)은 지반(地盤)의 특성(特性)에 따라 현저한 차이(差異)를 나타내게 되는데 이러한 현상(現象)을 동적(動的) 지반(地盤)-구조물(構造物) 상호작용(相互作用)이라고 한다. 지반(地盤)-구조물(構造物) 상호작용(相互作用)의 해석방법(解析方法)은 크게 직접법(直接法)과 부분구조법(部分構造法)으로 구분되며, 이 중 부분구조법(部分構造法)은 직접법(直接法)에 비하여 해석방법(解析方法)은 간편하지만 매입구조물(埋入構造物)이나 층상지반상(層狀地盤上) 구조물(構造物)에 대한 해석 시 많은 제약(制約)을 받게 된다. 본 논문(論文)에서는 원친적으로 반무한탄성체지반상(半無限彈性體地盤上) 구조물(構造物)에만 효과적으로 적용(適用)할 수 있는 부분구조법(部分構造法)을 적절히 응용(應用)하여 매입구조물(埋入構造物) 혹은 층상지반상(層狀地盤上) 구조물(構造物)에도 적용할 수 있는 방법을 제시(提示)하였으며, 직접법(直接法)에 의한 해석프로그램인 FLUSH의 해석결과와 비교(比較) 검토(檢討)하여 그 타당성(妥當性)을 입증(立證)하였다. The dynamic behavior of a structure by earthquake is considerably affected by the flexibility of the base soil. This phenomenon is called dynamic soil-structure interaction effect. There are two broad categories of soil-structure interaction analytical technique: direct method and substructure method. Substructure method, in contrast to direct method, has many limitations in applying to embedded structures or structures on layered soil sites, while it is relatively simple. In this paper, a simplified soil-structure interaction analytical procedure using substructure method is proposed to eliminate its original limitations. The proposed method is well applicable to embedded structures or structures on layered soil sites with as good results as FLUSH.

Effects of the Recorded Earthquake Data on the Seismic Fragilities of Korean Nuclear Power Plant Structures

조양희,조성국,Joe, Yang-Hee,Cho, Sung-Gook Computational Structural Engineering Institute of 2003 한국전산구조공학회논문집 Vol.16 No.3

지진취약도분석 기술은 원자력발전소의 구조물 및 기기의 실제 내진성능을 평가하기 위하여 이용된다. 이 논문에서는 원자력 발전소를 구성하는 구조물들의 지진취약도를 평가하는 개선된 기법에 대하여 요약하였다. 또한, 최근 몇 년간 한반도에서 발생된 소규모 기록지진의 응답스펙트럼에 대한 공학적 특성을 평가하고, 이러한 기록지진의 응답스펙트럼을 부지의 실제 지반운동으로 사용할 경우, 지진취약도 분석에 미치는 영향을 검토하였다. 몇가지 예제 구조물에 대한 지진취약도분석을 통하여 기록지진의 특성이 한국형 원자력발전소의 내진성능에 미치는 영향을 정량적으로 평가하였다. 평가결과, 현재까지 부지의 실제 지반운동으로 사용되어 오던 Newmark 스펙트럼은 국내 시설물의 내진성능을 과대평가 할 수 있음을 보여주었다. Seismic fragility analysis (SFA) has been utilized to evaluate the actual seismic capacity of structure and equipment in nuclear power plants (NPP). This paper briefly introduces an improved method for evaluating seismic fragilities of components of NPP's in Korea. Engineering characteristics of small magnitude earthquake spectra recorded in the Korean peninsula during the last several years are also discussed in this paper. Some significant differences between the Newmark's spectra and the recorded spectra as a site-dependent spectra are assessed. Several comparative SFA's have been performed to evaluate the effects of the recorded earthquakes on the seismic capacities of Korean NPP structures. The results showed that SFA using the Newmark's spectra might over estimate the actual seismic capacities of Korean facilities.

기초의 부분적 들림이 지반-구조물상호작용 시스템의 지진응답에 미치는 영향

조양희,장승필,Joe, Yang Hee,Chang, Sung Pil 대한토목학회 1990 대한토목학회논문집 Vol.10 No.1

본 연구에서는 지반-구조물 상호작용 시스템에 대하여 기초의 부분적 들림을 고려할 수 있는 새로운 해석적 방법을 제시하였다. 제시된 방법은 시스템의 3 차원 거동, 수직입력의 영향, 지반반력의 비선형분포 등도 함께 고려할 수 있도록 하였다. 기초가 들릴때 지반강도 및 감쇠값의 비선형성을 나타내기 위해서는 기초의 접지면적 감소뿐만 아니라 기초회전에 따른 건물의 강체운동효과와 지반반력작용의 이동 등의 영향도 동시에 고려하였다. 다양한 예제해석을 통하여 내진해석시 기초의 부분적 들림을 고려하게 되면 기초부에서의 변위는 크게 증가하는 반면 구조물 상부에서의 탄성변위 응답치 및 가속도 응답치는 감소한다는 사실을 확인하였으며, 수직입력, 비선형 지반반력분포 3차원 거동 등은 그 영향을 무시하게 되면 불안전측의 지진응답치를 주므로 해석시 필히 고려되어야 한다는 사실을 밝혔다. An analytical procedure is proposed for the seismic analysis of a soil-structure interaction system with besemat uplift, including the effects of concurrent vertical seismic ground motion, nonlinear distribution of bearing soil pressure under the basemat, and 3-dimensional behavior of the system. The soil-structure interaction system is assumed to have rectangular-shaped basemat on elastic half-space. Nonlinearity of soil spring constants and soil damping coefficients induced by the base mat uplift is modeled by considering not only the reduction of contact area between soil and structure but also the effects of rigid body rotational motion of the superstructure, and the shift in the point of action of the resultant reaction on the basemat. Throught various parametric studies. it has been confirmed that the seismic responses of the superstructure reduce notably while response at the basemat increases considerably. The results also show that the effects of concurrent vertical ground motion. nonlinear soil pressure distribution under basemat, and 3-dimensional behavior of the system shall be included in uplift analysis in order to obtain the correct structural responses.

여고생의 ‘현대무용’ 참여가 신체조성과 신체적자기효능감 및 평생체육연계인식에 미치는 영향

조양희(Cho, Yang-Hee),박휴경(Park, Hyu-Kyoung) 학습자중심교과교육학회 2019 학습자중심교과교육연구 Vol.19 No.13

본 연구는 여고생의 ‘현대무용’의 참여에 따른 신체조성과 신체적자기효능감 침평생체육연계인식의 변화를 알아보기 위함이다. 2018년도 1월 8일부터 19일까지 방과 후 수업으로 ‘현대무용’을 주5회 2주간 총10회 적용하였다. 분석은 I-STATisticser 2.0.1, MS-Excel·SPSS ver. 20를 이용하였다. 결과, 체중과 BMI는 통계적으로 유의한 변화가 없었고, 신장·근육·체지방률과 기초대사량 변인에서 유의한 변화를 보였다. 이와 함께 평생체육연계인식은 차이가 나타났다. 이러한 결과를 볼 때, 여고생을 위한 ‘현대무용’은 학교프로그램으로 활용성이 높다고 할 수 있다. 그러나 신체적 자기효능감은 전 후간 차이가 없었다. 이는 단기간의 참여로 인한 것으로 판단되며 향후 지속적인 참여를 통한 검증이 요구된다. The aim of this research is to analyze the difference between the pre- test and posttest of body composition and physical self-efficacy, recognition for life-time sports. Subjects were 16 female girls who are boarding school in semester. Modern dance for beginners was applied which is composed of floor-work, bar-work, and center work including flexibility, muscle strength and aerobic improvement. The program was conducted a total of 10 times(90 minutes per session) for two weeks from January 2018 during winter vacation. Height, weight, muscle mass, body fat, BMI, and basal metabolic rate were measured. Statistics was analyzed by I-STATistics 2.0.1, MS-Excel and SPSS ver. 21.0. and ⍺ set .05. Results of muscle mass, body fat percentage, and basal metabolic rate appeared significantly. Perception of life-time physical education showed that significantly between pre-test and post-test. Physical self-efficacy didn t showed that significantly between pre-test and post-test. In conclusion, Modern dance program for high school girls is useful to participate in school based physical education program.

승마운동 방법에 따른 초등학생들의 심박수 반응

조양희(Cho, Yang, Hee),서동일(Seo, Dong-Il) 한국체육과학회 2013 한국체육과학회지 Vol.22 No.6

The purpose of this study was to examine the effect of types of horseback riding exercise on heart rate in elementary school students. The subjects were 8 boys and 9 girls of elementary students. Types of horseback riding were consisted of walking, brisk walking with stirrup, brisk walking without stirrup, and brisk walking without stirrup like eight figure. There was not significant difference on heart rate among types of horseback riding between boys and girls. However there was significant difference on heart of brisk walking without stirrup between boys and girls(p<.01). Also there were significant differences on heart rate of types of horseback riding within groups (boys and girls) such as walking and brisk walking (p<.001), brisk walking with stirrup and brisk walking without stirrup(p<.001), brisk walking without stirrup and brisk walking without stirrup like eight figure(p<.001). These results indicate that the types of horseback riding program have different intensity on heart rate in elementary school students. Therefore when we prescript horseback riding exercise for elementary students, it should be considered types of horseback riding such as walking, brisk walking, and with or without stirrup.

디지털무용의 경향에 관한 연구

조양희 ( Yang Hee Cho ) 한국무용교육학회 2012 韓國舞踊敎育學會誌 Vol.23 No.1

This study has provided new trends of digital dance by looking into the qualities of digital media which are dispersion and combination, virtuality, and interaction. By looking into the qualities of digital media, the researcher has discussed them as a new perspective on digital dance, and looked into the ways dance changes according to the use of digital media. First, the researcher could find different tendencies of movements and body on digital dance from existing theater dance. The hypothetical images created by computer technologies overcome the limits of movements the body has and also are able to transform by the distortion, stress, and reduction of body. Moreover, the certain traits of dancers` movements are destructed and various ways of approach towards the movement language of digital dance are suggested by distortion of body, and contacts of body with surroundings. Second, the space time is dissolved and transcended and the actual dancer and the hypothetical dancer can co-exist in a third-dimensional space by the interaction between the dancer and the new computer technology. This is derived as hypothetical space and variation of structure. The researcher could find out that variety and complexity are amplified more than imagined by the interconnection of digital qualities, movements and various factors that construct the scene Third, the co-work through the network means that interoperability of digital technology has enabled the division of work and cooperation and efficient collaborative project. This collaborative project provides dancing materials and stimulates challenges, which has brought new creativity of choreographers and expansion of expression limits by active collaboration in choreographic works. Fouth, since the audience can freely participate in the digital dance on-line, the mutual contacts between dancer and the audience has brought active communication in a horizontal way. Also, the trends of mutual contacts which can be seen in digital interactive performances can be interpreted as art which is formed by audience themselves through digital media. This means that dancers form the performance by mobilizing the audience participation. Lastly, giving various meanings onto dance is another trend of digital dance. On the basis of qualities of digital media, the structure of meaning formation, such as impossible decision making, accompanies ``something that can never be``. As a result, the researcher pointed out the probability of open and various interpretations. Also, in order to understand and interpret the digital dance works, overall awareness to percept interactivity of various factors is necessary. Consequently, when putting the digital dance together, the researcher provided that digital dance can be understood as the following: deviation from body causing diversification of images and movements and multivocal directing, virtual space enabling complex and multidimensional changes in time-space, and interactions resulting broadening of synaesthetic perception and forming new relations with the audience. Also, the recent utilization of digital media in dance has boosted collaboration in overall dance and artworks as a main factor forming new structure of dance, and aimed genre-over tendencies and process-based art works. Following study has a limit in dealing with every digital trends of dance. However, the researcher emphasizes digital dance is worthy of notice and suggests the extension of the dance sphere.

일 종합병원 입원 환자의 간호서비스 만족도와 간호사의 간호 행위 특성간의 관계 연구

조양희(Yang Hee Cho),김소인(So In Kim),한금선(Kuem Sun Han),임지영(Ji Young Lim) 한국간호행정학회 2001 간호행정학회지 Vol.7 No.3

겔-스폰지 혼용 시스템에 고정화된 세포를 통한 질산염의 연속적 분해

조양희(Yang Hee Cho),함태식(Tae Shik Hahm) 한국식품과학회 1998 한국식품과학회지 Vol.30 No.4

식품의 종이 포장재에 존재하는 중금속의 함량

조양희 ( Yang Hee Cho ),박선오 ( Seon Oh Park ),우수민 ( Soo Min Woo ),함태식 ( Tae Shik Hahm ) 한국환경분석학회 2003 환경분석과 독성보건 Vol.6 No.2

연구논문 : 자연과학 ; 외국 보유 한반도 원산 식물유전자원의 국내 재도입 현황 및 의의

조양희 ( Yang Hee Cho ) 한국국제농업개발학회 2012 韓國國際農業開發學會誌 Vol.24 No.1

As the sovereignty over the genetic resources has been strengthened and gained momentum internationally, it is a critical juncture when we collect and conserve plant genetic resources originated from Korea. Therefore, the present paper reviewed the status and details of reintroduction of plant genetic resources originated in Korean Peninsula conserved in foreign countries and formulate the strategies for the future direction towards the conservation and sustainable utilization of these plant genetic resources. During the Japanese regime around Korea`s pre-1948 histories coincided during Korean war, it has not realize the vital importance of the genetic resources. There were outflows of large number of Korea-originated genetic resources into the developed countries. Thus, their reintroduction has important relevance and significance, since those outflown landraces are collected from all over the Korean Peninsular including the North Korea and these outflown accessions were not yet conserved in RDAgenebank. A total of 4,422 accessions including 1,679 accessions with 30 crops from the United States of America in 2007, 1,546 accessions with 32 crops from Japan in 2008, 901 accessions with 118 crops from Germany in 2009 and 296 accessions with 26 crops from Russia between 1996 to 2009 were regained officially. These accessions are crops including barley, soybean, wild soybean, adzuki bean, mung-bean, sesame, millet and etc. It is believed that most of these accessions outflown to alien countries have been returned. However persistent efforts are needed to get additional information on Korea-originated germplasm kept in other countries. Also, adequate supporting policies are needed for the prevention of outflow genetic resources which are outflown abroad without permission. This continuous policy will certainly support the potential researches on conservation and utilization of Korea-specific genetic resources in the near future.