생태공원

조용현,Cho Yong-Hyeon 한국관개배수위원회 2000 한국관개배수논문집 Vol.7 No.2

소규모 대지의 조경 개선방안에 관한 연구 - 서울시를 사례로 -

조용현,Cho, Yong-Hyeon 한국조경학회 2009 韓國造景學會誌 Vol.37 No.5

우리나라 건축법에 따르면, $200m^2$ 이상의 대지 위에 건축행위를 하기 위해서는 반드시 일정면적비율 이상의 식재를 실시해야 한다. 대규모 개발에서는 이 법규가 잘 지켜지나, 소규모 개발에서는 잘 지켜지지 않고 있기 때문에 소규모 개발에 대해서는 특별한 관심이 기울여져야 한다. 따라서 이 연구의 목적은 대지의 조경에 대한 국내외 사례를 분석하고 서울시에서 소규모 대지에 대한 조경관리 실태분석을 통해 소규모 대지의 조경 설치 및 사후관리에 대한 합리적인 개선 방안을 마련하는 것이다. 이 연구에서는 2002년도에 서울시 성북구와 강남구를 대상으로 조사된 조경 실태자료를 사용하였고, 추가 현장조사와 담당공무원 및 건물소유주에 대한 설문조사를 수행하였으며, 그 분석결과를 토대로 건축단계별로 개선방안을 도출하였다. 결과를 요약하면 다음과 같다. 첫째, 건축설계 상위계획 단계에서는 조경기준의 강화, 지구단위계획에서의 지침 제공, 인센티브 제도의 도입 등을 제안하였다. 둘째, 건축설계단계에서는 설계지침 및 사례집 제작 보급, 합벽개발 허용, 연면적 2,000m2 이상 건축물 건축에서 조경기사의 직접참여 또는 협력 의무화 법조항 신설 등을 제시하였다. 셋째, 건축허가 및 준공, 사후관리단계와 관련하여 조경에 대한 허가서류 검토에 녹지직 공무원 참여 보장, 현장 검사 및 확인 업무에 조경전문가가 참여할 수 있도록 관련규정의 개정 등을 제시하였고, 사후관리에 조경전문기술자가 대행 또는 참여할 수 있도록 허용하는 관련 규정 개정 필요성 등을 제시하였으며, 시정명령 미이행 또는 위법건축물에 대한 관리감독 강화의 필요성을 제기하였다. Under the Korea Building Act, anyone planning to build a building or buildings on a site over $200m^2$ must plant plants over a specific area. In large scale development this rule is adhered to well, but such is not the case in small scale development. Therefore, special attention must be given to small scale development. Thus, the purpose of this research is to analyze the current situation and practice of planting at small scale development sites in Seoul, and then suggest policies for improving them. In this study using the data covering Seongbuk-Gu and Gangnam-Gu, which was surveyed in 2002, the current situation and practice of planting at small scale development sites was analyzed. After a questionnaire survey was conducted with government officers and building owners, the same analysis was made. Then the policies for improvement were extracted. The results are as follows: 1. In superordinate planning stage, because the minimum standards are too low, those must be strengthened. Any district plan does not control planting in private building lots. This requests active application of planting in private building lots as a design control measure in district planning. 2. In the building design stage, there are no guidelines. The obligation of building set-back between adjacent buildings by the Korean Building Act produces mass shaded and inferior planting beds. The act also is blocking landscape architects' participation in small scale development. And wall installations deteriorate the streetscape and growth of plants with shading. Therefore guidelines must be made. 3. In each stage of the building permit, the permit for building completion, and maintenance the Korean Building Act is blocking landscape architects' participation in small scale development, so the planting plan is completely handled by nonprofessional persons. Therefore, the act should be amended in order to make way for landscape architects' participation in each stage of the small scale development process.

녹지량 지표로서 녹시율 개념을 도입한 서울시 가로 환경 특성 분석

조용현,정용문,김광동,Cho Yong-Hyeon,Cheong Yong-Moon,Kim Kwang-Dong 한국조경학회 2006 韓國造景學會誌 Vol.34 No.1

The purposes of this study are to develop the concept and the measurement method of IGS(Index of Greenness in Streetscape) and to analyze the present condition of street environments through field surveys of IGS in Seoul. IGS is a new index which directly expresses human's perceptions of plants in a street and defined as the area ratio of which leaves of plants occupy in an eye-level view of a person standing on the center line of a street. In practice, IGS can be calculated from a photograph taken from a center point of a street at about 1.5 meter height from the ground with single lens reflex camera equiped with 50mm standard lens. The photograph must have a special composition in a way that the center point of the photograph is positioning at the visual vanishing point of street center line. Then the IGS can be calculated by computing the percentage of the area covered with the plant leaves in the photograph. Types of streets in Seoul were classified according to road functions into 4 types. We performed field surveys and calculated IGSs from 300 sample sites in Seoul. Followings summarize some of study results. The average IGSs for arterial roads, highways, alleys and back streets are 16.91%, 16.33%, 13.97% and 7.50% respectively. The difference of average IGS values between Ginkgo biloba and Platanus occidentalis was relatively large. From observation IGSs from April 4th, 2003 to October 2nd, 2003, it was evident that the range and timing of each plant species' IGS change is not the same. According to questionnaire to public officials taking charge of street greening, the current evaluated IGS is 24.4%, and it is expected to be 40.7% in the future.

우리나라 보호지역 관리 실태와 개선방안

조용현,이용광,Cho, Yong-Hyeon,Lee, Yong-Kwahng 한국조경학회 2010 韓國造景學會誌 Vol.38 No.1

본 연구의 목적은 우리나라의 보호지역에서 관리개선방안을 마련하는 것이다. 이를 위해 보호지역의 현장조사와 설문조사를 통해 문제점을 파악하였고, 통합관리를 위한 관리개선방안을 도출하였으며, 이에 따른 관리계획지침과 사후평가지침을 마련하였다. 본 연구 결과는 다음과 같다. 첫째, 현재의 우리나라의 보호지역은 지정 후 제대로 관리가 이루어지지 않고 있기 때문에 보호지역에 대한 관리계획 이 필요하다. 둘째, 관리계획 수립 시 관리기관은 관련 이행당사자와의 원활한 협의를 통한 자발적인 참여를 이끌어낼 수 있는 관리계획을 수립해야 한다. 셋째, 관리계획을 지속적이고 체계적으로 지속시키기 위해서는 관련 정책 및 법 제도를 정비해야 한다. 넷째, 보호지역의 중복지정 및 관리의 다원화에 따른 관리의 비효율성을 감안하여 통합관리전담기구를 신설해야 한다. 다섯째, 효과적 통합관리를 위해 관리계획지침과 사후평가지침이 절실히 필요하다. 본 연구 결과는 우리나라 보호지역의 문제점을 해결하기 위한 관리개선에 도움을 줄 수 있을 것이다. 향후 관리계획과 사후평가 부분의 지침에 대한 검증과 국가 차원에서 관련 법 제정, 정책 등의 체계적이고 지속적인 지원이 수반되어야 할 것이다. This research intends to suggest the ways to improve protected area management in Korea. To this end, the current protected areas appointed in the nation and their management has been examined, and the problems of management have been identified by means of a field research of protected areas and a survey. In addition, a scheme for an integrated management system has been suggested for management improvement, and a management plan guide, as well as after-evaluation guide, has been suggested. The outcome of the research is as follows. First, the protected area management plan is needed since the protected area in our nation is not managed in a proper way after being appointed as such. Second, when making a management plan, a management organization should make a management plan that can attract voluntary participation from stake-holders by means of efficient communications with them. Third, to maintain the management plan in a consistent and systematic way, related policy, law, and institutions should be (re)formulated. Fourth, an organization responsible only for management of protected areas should be established in consideration of management inefficiency due to the overlapped appointment of managing the protected area. Fifth, the management plan guide and after-evaluation guide can be used for effective protected area management. The results of this study are expected to be helpful for creating a management improvement scheme to address the problems related to the protected areas in our nation. But, it is required to review the guides for the management plan and after-evaluation, and consistent and systemic support from the government in such areas as legislation and policy are also in great need.

하천복원현장에서 표토관리 실태에 관한 연구

조용현,이종문,김원태,윤용한,강희경,박봉주,윤택승,장광은,신경준,어양준,곽무영,송홍선,Cho, Yong-Hyeon,Lee, Jong-Mun,Kim, Won-Tae,Yoon, Yong-Han,Kang, Hee-Kyoung,Park, Bong-Ju,Yoon, Taek-Seong,Jang, Kwang-Eun,Shin, Kyung-Jun,Eo, Yang-Joon 한국조경학회 2013 韓國造景學會誌 Vol.41 No.1

이 연구의 목적은 표토보존을 위해 국내 개발분야 중 주요한 사례에 해당하는 하천개발분야에서 표토관리의 실태를 조사 및 분석하는 데 있다. 전문가를 대상으로 한 설문조사를 통해 하천개발과정에서 표토관리의 실태와 문제를 파악하였다. 이를 분명히 하기 위해 국내 하천개선사업 중 환경부의 감독을 받는 생태하천복원사업으로서 최근 완료된 하천을 중심으로 개발 전과 개발 후의 토양특성을 분석하였다. 연구 결과는 다음과 같다. 첫째, 전문가들은 식물생장을 위해 최선의 토양관리 및 개선방법으로서 표토의 수거 및 재활용을 선호하였다. 둘째, 경제적 문제와 시공의 불편 때문에 실제 표토의 수거 및 재활용은 제대로 이루어지고 있지 않다. 셋째, 개발 후 식물생장에 필요한 유기물, 총질소 등 토양조건 요인들이 전반적으로 감소한다. This study aimed to research and analyze the real condition of topsoil management of river development field as a significant case among domestic development fields for topsoil preservation. Through survey with experts, we understood the real condition and problems of topsoil management during river development. In order to verify this, we analyzed the characteristics of soil before and after development focusing on the rivers recently completed as an ecological river restoration project, supervised by Ministry of Environment among domestic river improvement projects. The study results are like below. First, experts preferred collecting and reusing topsoil as the best method to maintain and improve soil for plant growth. Second, realistically collecting and reusing topsoil is not fully conducted due to economical issues and inconvenience in construction. In the soil condition, third, the contents of elements necessary for plant growth like organic matter and total nitrogen declined overall after development.

수변 생태벨트 평가방법 개발에 관한 연구

조용현,최대희,Cho, Yong-Hyeon,Choi, Dae-Hee 한국조경학회 2014 韓國造景學會誌 Vol.42 No.1

This study aims to develop the diagnostic evaluation method of the riverine ecobelt for construction, conservation, and maintenance of the riverine ecobelt. The value indices in the proposed evaluation method are composed of total 5 fields and 19 elements. The 5 fields are flood control, environmental function, growth of plants, ecobelt function, and restoration potential. Flood control field is composed of total 3 elements such as length, width, and density of green area. Environmental function field is composed of 4 elements such as park use, landscape boundary and edge, microclimate control, non-point pollution control. Growth of plants field is composed of 6 elements such as species composition, forest height, stratum structure, vine plants, plant vitality, and succession of plants. Ecobelt function field is composed of 4 elements such as longitudinal connectivity, lateral connectivity, in-stream forest or habitat, roads on bank top. Restoration potential field is composed of 2 elements such as landform and land use of the immediate vicinity. The score system ranging 1~4 was adopted. The weighting parameters of elements were unified with each other. The final grade system ranging 1~5(1: very good~5: very bad) was adopted, and the final grade was evaluated by the mean values of each field. According to the test application of the diagnostic evaluation method of the riverine ecobelt, the final grades showed effectively the real condition of each site. 이 연구의 목적은 수변 생태벨트를 조성, 보전, 관리를 위해 수변생태벨트의 진단적 평가방법을 개발하는 것이었다. 평가의 기본 틀은 일본의 제방림 평가방법을 토대로 하였으며, 국내 수변녹지의 현황에 맞게 수정한 1차 수정평가방법으로 1차 시험평가를 실시하였다. 1차 시험평가의 문제점을 보완한 2차 수정안을 가지고 전문가를 대상으로 설문을 실시하고, 그 결과를 반영하여 최종 평가방법을 제안하였다. 최종 평가방법으로 홍천강에서 시험평가를 실시하였다. 최종적으로 제안된 평가방법의 평가영역은 5가지 분야 19가지 항목으로 구성되었으며, 5가지 분야는 치수, 환경기능, 식물생장, 생태벨트기능, 복원잠재성 등이다. 치수분야 평가항목은 수림의 길이, 폭, 밀도 등 3가지 항목으로, 환경기능분야는 공원이용, 경관 경계 및 주연부, 미기후 조절, 비점오염 제어 등 4가지 항목으로, 식물생장분야는 종 구성, 수림 높이, 계층구조, 덩굴식물, 식물활력도, 후계목 생장 등 6가지 항목으로, 생태벨트기능 분야는 종적 연결성, 횡적 연결성, 하천내 수림 혹은 서식지, 제방상단 도로 등 4가지 항목으로, 마지막으로 복원잠재력분야는 지형, 인접 토지이용 등 2가지 항목으로 구성되었다. 점수체계는 1~4까지 부여되었으며, 최종 평가결과 등급체계는 우수한 1등급에서 가장 열악한 5등급까지 5등급으로 구분하였다. 각 분야별 항목별 가중치는 동일하게 하였으며, 분야별 점수 평균값을 다시 평균하여 최종 등급을 판정하는 것으로 하였다. 홍천강을 대상으로 적용된 평가방법은 각 구간의 수변 생태벨트 실태를 효과적으로 보여주었다.

경관 시뮬레이션을 통한 가로 녹시율 증진방안 및 목표수준 설정 - 서울시를 사례로 -

조용현,Cho Yong-Hyeon 한국조경학회 2006 韓國造景學會誌 Vol.34 No.2

The purpose of this research is to suggest the planting methods and the reasonable target levels of IGS for promoting green streetscape in Seoul. Using the three dimensional computer simulations, various greening methods were applied to evaluate effectiveness of promoting green streetscape. The results of this study suggest that promoting tree planting on car lane is more effective than on pedestrian side walks. In wide streets, the height of tree has positive effects on promoting green streetscape. In both car lane and pedestrian side walks, the greening effects of tree planting both in zig-zag pattern and in parallel pattern were similarly most high. The width of strip in side strip planting has positive effect on promoting green streetscape. Promoting stratified planting is very effective. Promoting greening wall on pedestrian side walks is more effective than on car lane. Combined the results of IGS survey with the public officials and complex simulations, suggest that the optimal levels of IGS is ranging from 12.0% in alleys to 54.0% in car lanes among arterial roads.

고속철도 전차선로 고장력 실시간 모니터링 기술 구현

조용현(Yong Hyeon Cho),박영(Young Park),정현진(Hyun Jin Jung) 대한전기학회 2015 전기학회논문지 Vol.64 No.8

Along with the increase of railway catenary system operation speed to 400 km/h, there have been growing demands for good quality current collection systems that satisfy quality standards as well as criteria for safe working. Retaining uniform elasticity tension of contact wires is essential in maintaining high quality contact between pantograph and OCL (Overhead Contact Line) of current collection systems in high speed railways. Therefore, the tension of contact wire must be kept within tight tolerance limits in both working conditions and adverse weather conditions of catenary system. In accordance with these conditions, this paper presents a real time monitoring system for the tensioning device of the newly installed catenary system on the special route of Honam high speed line for 400 km/h operation. For the verification of the true value of tension of contact wires, we have developed ring-type tensioning sensors which were installed on supporting points of mast which compose the catenary system. According to the field test performed on the Honam high speed line catenary system, variation of tension was measured accurately in real-time.

열차 집전장치와 전차선 사의의 동적 접촉력 측정방법 개발

조용현(Yong Hyeon Cho),최강윤(Kangyoun Choe) 한국소음진동공학회 2002 한국소음진동공학회 학술대회논문집 Vol.2002 No.5

파동반사와 도플러 효과를 고려한 전차선의 속도향상 설계

조용현(Yong Hyeon Cho),이기원(Kiwon Lee),권삼영(Samyoung Kwon),김도원(Dowon Kim) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-

There are many massive components added on the railway overhead-line. These components cause larger fluctuations of contact forces, which are due to wave reflections and Doppler effects when a high-speed train passes those. In this paper, mathematical formula are derived for the relation between the added mass and contact force fluctuations. Using the derived formula, we calculate a added mass on the overhead-line which cause amplification factor to become 2.5. German design practice requires that amplification factor due to the wave reflection should be less than 2.5 to obtain good current collection performance. To show the validity of the formula, simulation results are compared with the calculation results. Simulation results showed that contact force fluctuations grow rapidly when an added mass is larger than the calculation result. Therefore, the simple form of formula can be used for estimating maximum added mass not to cause large fluctuations of contact forces in early design phase.