해저터널 내진성능 향상을 위한 Flexible segment 효용성 연구

장동인,김종일,곽창원,박인준,Jang, Dong-In,Kim, Jong-Ill,Kwak, Chang-Won,Park, Inn-Joon 한국터널지하공간학회 2017 한국터널지하공간학회논문집 Vol.19 No.3

Underground structures that have recently become larger are required to be stable not only during normal times but also during earthquakes. Especially, it is very important to maintain the stability of the subsea tunnels during the earthquake. The objective of this paper is to verify the effectiveness of the flexible segment, which is one of the breakthrough facilities to maintain the stability of the subsea tunnel during the earthquake using the shaking table test. Another goal of this paper is to propose the optimum position of the flexible segment through 3D dynamic numerical analysis based on the verified results from shaking table tests. The 1g shaking table test considering the similarity ratio (1:100) to the cross section of the selected artificial subsea tunnel was carried out considering the Geongju and Artificial seismic waves, longitudinal and lateral wave, and with/without flexible segments eight times or more. As a result of the shaking table test, it was confirmed that the flexible segment is effective in improving the seismic performance of the undersea tunnel in all the experimental results. In addition, 3D dynamic numerical analysis was performed to select the optimum position of the flexible segment which is effective for improving seismic performance. As a result, it was confirmed that the seismic acceleration is attenuated when the flexible segment is installed adjacent to the branch section in subsea tunnel. 최근 대형화되고 있는 지하구조물은 평상시는 물론 지진시에도 안정성을 확보하여야 한다. 특히 지하구조물 중에서도 해저터널은 지진시 안정성 유지가 매우 중요하다고 할 수 있다. 본 논문의 목표는 해저터널의 지진시 안정성 유지에 획기적인 시설물 중의 하나인 Flexible segment에 대해서 진동대 시험을 이용한 효용성 검증이다. 검증된 결과를 토대로 3차원 동해석을 통해 Flexible segment의 최적위치를 제안하는 것이 또 다른 하나의 논문 목표이다. 본 연구 수행을 위해 선정한 가상해저터널 단면에 상사율(1:100)을 고려한 1g 진동대 시험(1g Shaking Table Test)을 경주지진파, 인공지진파, 종방향, 횡방향, Flexible segment유무 등을 고려해서 모두 8회 이상 수행하였다. 진동대 시험 수행결과 전 시험 모두에서 Flexible Segment가 해저터널 내진성능향상에 효과가 있음을 확인하였다. 또한 시험적으로 내진성능 향상에 효과가 검증된 Flexible segment의 최적 위치를 선정하기 위하여, 3차원 동적 수치해석을 수행하였다. 그 결과 분기구간에서 Flexible segment를 인접해 설치할 경우 지진가속도가 감쇠하는 것을 확인할 수 있었다.

융합기술 체화형 화장품 디자인을 위한 트렌드웨어

한석우(Han Suk Woo),김곡미(Kim Gok Mi),김종일(Kim Jong Ill) 한국전시산업융합연구원 2009 한국과학예술융합학회 Vol.5 No.-

FTOCD는 기술, 마케팅, Life Scene과 같은 융합적 조건과 속성을 질서 있는 체계로 나타내기 위한 체계 연구로서 시장선도를 위한 구체화 과정을 실현시키는 수단과 방법을 의미한다. 또한 FTOCD에 수반되는 개념적, 추상적, Seeds, Needs가 구체적이며 실체적인 상품으로 개발하고, 트렌드 리더형 기업의 경쟁력 확보에 따른 형이하학적, 형이상학적 요인에 관계를 설정하고 체계화 시키는 접근방법으로 이용된다. 그러므로 거시적인 컨셉으로 상품화하기 위해서는 잠재적 징후와 트랜드 형성영향요인들을 재해석한 디자인가치로서의 트렌드웨어의 유효성이 요구된다. 따라서 본 연구에서는 화장품디자인의 트렌드가 지닌 Fad 요인 구성의 적재량 파악과 핵심을 FTOCD를 위한 표본확보의 측면에서 사용자 패턴을 구조적으로 해석하였다. FTOCD means a means and method to realize a materialization process to lead a market as a systematic research to represent united conditions and attributes such as technology, marketing and life scene in a orderly system. This is developed as a commodity whose conceptual and abstract seeds and needs accompanying FTOCD are specific and practical, and is used as an approach to set and systemize the relationship between physical and metaphysical factors depending on the security of corporate competitiveness of trend leader type. Therefore in order to commercialize as a tangible concept the validation of trendware is required as a newly reinterpreted design value with fad being a potential sign and trend factors. So in this study the key point and understanding of loadage, which both are components of fad in a cosmetic design trend, are interpreted in the view of securing a specimen for FTCOD.

Clinical and Pathologic Correlation of Endometrium Detected by Transavaginal Sonography in Postmenopasual Woman

문혜성 ( Hey Sung Moon ),장병우 ( Byeung Woo Chang ),손영수 ( Young Soo Son ),김종일 ( Jong Ill Kim ),우복희 ( Bock Hi Woo ) 대한산부인과학회 1993 대한산부인과학회 학술대회 Vol.71 No.-

제 71 차 춘계학술대회 : 일반연제발표 ; 폐경기후 여성에서 질식초음파검사에 의한 자궁내막 이상병리상태 예측에 관한 연구

문혜성(Hey Sung Moon),장병우(Byeung Woo Chang),손영수(Young Soo Son),김종일(Jong Ill Kim),우복희(Bock Hi Woo) 대한산부인과학회 1993 춘계학술대회 Vol.- No.-

減壓蒸發의 氣泡頻度에 관한 實驗的 硏究

金鍾一,金鎭興,朴鍾伯,金炳哲,洪明錫,鄭洛奎 조선대학교 동력자원연구소 1983 動力資源硏究所誌 Vol.5 No.1

an experimental investigation was carried out to make clear the bubble frepuency of pressure drop evaporation. The phenominon of evaporation was observed when a quantity of uniformly superheated distilling water was exposed to a sudden pressure drop in the flash chamber. The experiments covered the range of liquid mean temperatures between 40 and 80℃ superheats between 2.0 and 8.9℃ and liquidlevel between 370 and 390mm. Experimental results were obtained as follows. 1) The higher superheats and liquid mean temperatures are the higher the bubble frequency is. 2) During the four-second period after flash evaporation has begun, the bubble frequency is the highest. 3) The less the NETD is, the lower the bubble frequency becomes. 4) The farther the distance from the center of the liquid becomes and the deeper the depth of the liquid becomes, the bubble frequency becomes.

폐경 여성에서 프로제스테론 용량에 따른 지질 및 지단백 대사에 미치는 영향과 골 밀도 변화에 대한 연구

김종일,장병우,전선희,지일운,유한기 대한폐경학회 1996 대한폐경학회지 Vol.2 No.2

Menopause constitutes a sizable population of the adult wornans life, and it is resonable to con that most women will benefit from hannone replacement therapy. Also, it is important to realized that cardiovascular disease and bone fracture are a major cause of marbidity and death in the menopausal patient To study the effects of different types of progesterone on lipoprotein metabolism and bone metabolism, we treated two groups of postmenopausal women with far three weeks with conjugated equine estrogen 0.625mg per day and different sequential estrogen-pragesterone regimens as followes: Group I received medroxypmgesterone acetate, 2.5mg per day, from day 14 to day 25 of the cycle. Group II, medroxyprogesterone acetate, 5mg per day. The data demonstrated a beneficial effect in lipoprotein profiles, that total cholesterol decreased in two groups by 8.6 to 11.7 percent from the base line values. Low density lipoprotein cholesterol decrease in two groups by 18.5(group I) and 32.7 (group II) percent in post HRT 12 months. High density lipoprotein cholestaol increase during trcatment by smaller in 5.3 percent and higher in 27 percent in both groups. Triglyceride increase during initial 6 months period (6.5-28.3 percent) and decrease during post 12 months period in both groups. Lumbar BMD and Femur BMD were decrease during 6 months period and increase during later 6 months in Group I, but in Group II results shows reciprical change compared with Group I. Our result suggest that. medroxyprogesterone acetate,especially 5mg per day have the beneficial effect of postmenopausal estrogen treatment on HDL-cholesterol and so, the favorable lipoprotein profile offer protection to the cardiovascular system and medro- xyprogesterone acetate was no adverse effect to bone mineral density in postmenopausal HRT women

自動車用 Gasoline Engine의 高性能化 方案 : For lightening and high r.p.m 輕量 高速化를 中心으로

金鐘一 朝鮮大學校 工科大學 1973 論文集 Vol.2 No.-

A gasoline engine has been at the top as engine for automobile , especially passenger car in points of high performance, driving stability, easy handing, stillness, and there is a great deal of room to develop it as a rotary engine in future. As we often have the necessity of compact engine of high performance in country as well as in city. as a counter-measure I have intended high r.p.m and over head cam type and made the engine having 4 valves a cylinder, inertia of suction gas and pulsation effect, and put emphasis on the ratio of combustin chamber area to comberstion chamber volume. I didn't consider the manufacturing cost.

大形部品의 熱處理 方法에 關한 硏究

朴煥奎,金鍾一,李茂錫,金鎭興,金永奭 조선대학교 생산기술연구소 1980 生産技術硏究 Vol.1980 No.-

In accordance with the advance of the heavy chemical industry, the production of heavy duty machine-tool was very important recently. In this paper, we discussed the method of heat treatment when the large size gears was manufactured. The surface hardening had the large size parts by flame heat treatment so that we iroduced the better manufacturing items in terms of economics. we convinced that the best large size parts were manufactured by more study in this fields.