• 한국농촌건축학회논문집
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• 제19권4호
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• pp.77-85
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• 2017

In order to preserve beautiful coastal areas landscapes of Jeju Island's the landscape resource, Jeju Special Self-Governing Province is dedicated to protecting the landscape through legal regulations and deliberations. However, the Coastal Landscape of Jeju Island was continuously damaged by due to increased tourist and high development pressure. Based on buildings along the Coastal Road in Aeowal of Jeju Island, this study focused on Management Status of Coastal Areas Landscapes through the Analysis of Building Landscape Elements. As a result, 1) It was effective to limit the use and scale of buildings through legal regulations such as Use zoning. 2) The result of analysis on the physical landscape elements of buildings showed some of the them have the damage values despite passing the review of Architecture Committee. Therefore Landscape Policies required institutional maintenance. 3) As physical landscape Elements of buildings is a minimum quantitation criterion of not less than 1.5 for D/H, or less than a factor of $27^{\circ}$ for angle of elevation and not less than 7.8m for elevation blockage ratio was presented as a criterion for preventing damage to the minimum Coastal Landscape.

• 한국BIM학회 논문집
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• 제13권2호
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• pp.1-15
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• 2023

Since the 1960s, the Korean Peninsula, which consists of 77.4 of the country's land and mountains, has seen a surge in demand for buildings due to population concentration due to urbanization and industrialization. Since then, the development of slopes has been inevitable due to the concentration and expansion of the city's population. When building a building on a slope, it is important to set the height of the surface. In this case, the means of regulating buildings in construction-related laws, such as the building closure ratio, floor area ratio, number of floors and total floor area of buildings, have an overall effect on buildings through the height of the surface. In the Korean Building Act, the setting of the height of the ground affects the calculation of the building height limit standard and the calculation of the underground floor, and it takes a long time to calculate. Therefore, the time required for attempts to change various design plans of buildings increases. The purpose of this study is to speed up the time required to calculate the weighted average of the surface when constructing buildings on slopes. In addition, the existing calculation process allows various design attempts compared to the same time given.

• 한국조경학회지
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• 제27권2호
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• pp.69-79
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• 1999

This study identifies the features of landscape elements on the fifteen districts with the idea of land use area and visual quantity of pictures by analyzing the air photo. Therefore, the sensibility of observer is comprehended through simulating the landscape evaluation and the landscape preference with using slide film. The study is divided into three periods to understand the transition of rural landscape as the social and cultural environments have been changed. The first period is the New Community Movement which affected the rapid change of social and cultural environments. The second and third periods are the prior and post time at the rearrangement of administration district in the Tae-Jeon Broad City. The result of this study is explained below part; 1. The transition of rural landscape has been occurred as the land use pattern has been altered. The change of pattern has affected an increase of the natural space and the structure change of agricultural productive space. 2. In the regression analysis, the regression model of landscape preference and land use ratio show; Landscape preference = 3.632 - 11.618 (Residential Area) - 4.227 (Equipped Farm). The explanation variables defined as Residential Area and Equipped Farm, and the relationship of those factors shows negative. Therefore, the increase of other building will make the rural landscape lower and worse.

• 한국환경복원기술학회지
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• 제19권4호
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• pp.1-17
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• 2016

In this study, remodeling projects are perceived as a sustainable urban management policy to boost the value of old apartments and stimulate urban regeneration and development. To evaluate the physical environmental performance of external spaces of remodeled apartments, an evaluation model was developed. After applying it to the target places, the following results were obtained. First, analysis of the external space change index of the target apartments revealed that institutional standards are necessary in line with the building arrangement type, parking lot expansion method, and changes in the building-to-land ratio. Second, the score ratio as to the external space change index performance is as follows: safety (48.30); pleasantness (25.90); convenience (18.90); eco-friendliness (14.90). In other words, "safety" had the biggest score ratio. Third, to boost the external space performance of remodeled apartments, the needs of residents and neighboring environmental plans should be considered from a communality standpoint.

• Transactions on Electrical and Electronic Materials
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• 제18권1호
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• pp.30-34
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• 2017

The building integrated photovoltaic system (BIPV) attracts attention with regard to the future of the photovoltaic (PV) industry. It is because one of the promising national and civilian projects in the country. Since land area is limited, there is considerable interest in BIPV systems with a variety of angles and shapes of PV panels. It is therefore expected to be one of the major fields for the PV industry in the future. Since the irradiation is different from each installation angle, the output can be predicted by the angles. This is critical for a PV system to be operated at maximum power and use an efficient design. The development characteristics of tilted angles based on data results obtained via long-term monitoring need to be analyzed. The ratio of the theoretically available and actual outputs is compared with the installation angles of each PV module to provide a suitable PV system for the user.

• Earthquakes and Structures
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• 제23권2호
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• pp.129-138
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• 2022

One of the objectives to prevent building pounding between two adjacentstructures is to considerseparation distance or decrease relative displacement during seismic excitation. Although the majority of building codes around the world have basically suggested some equations or approximately recommended various distances between structuresto avoid pounding hazard, but a lot of reportsin zone of pounding have obviously shown thatsafety situation or economic consideration are not always provided due to the collisions between buildings and the cost of land, respectively. For this purpose, a dynamic MDOF model by having base isolation system is numerically considered and using various earthquake records, relative displacements are mathematically investigated. Different equations to determine the value of damping ratio are collected and the results of evaluations are listed for comparison among them to present a new equation for determination of impact damping ratio. Presented equation is depends significantly on impact velocity before and after impact based on artificial neural network, which the accuracy of them is investigated and also confirmed. In order to select the optimum equation, hysteresisloop of impact between base of building and rubber bumper is considered and compared with the hysteresis loop of each impact, calculated by different equations. Finally, using representative equation, the effect of thickness, number and stiffness of rubber bumpers are numerically investigated. The results of analysis indicate that stiffness and number of bumpers have significantly affected in zone of impact force while the thickness of bumpers have not shown significant influence to calculate impact force during earthquake. For instance, increasing the number of bumpers, gap size between structures and also the value of stiffness is caused to decrease impact force between models. The final evaluation demonstrates that bumpers are able to decrease peak lateral displacement of top story during impact.

• 부동산연구
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• 제27권4호
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• pp.7-20
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• 2017

본 연구는 노후산업단지의 쇠퇴영향요인을 진단하고 그 특성을 바탕으로 노후산업단지를 유형화하였으며 연구 결과를 노후산업단지의 재생방안으로 연계하고자 하였다. 이를 위해 전국 산업단지를 대상으로 착공시점을 기준으로 20년이 경과한 94개소 노후산업단지에 대해 17개 지표를 측정 및 분석하였으며, 그 중 장치산업단지 5개소를 제외한 89개소 노후산업단지의 15개 지표에 대해 요인분석을 실시하였다. 요인분석 결과, 15개 지표는 5개 요인으로 분류되었으며 요인1은 '시가화 가능성', 요인2는 '생산 효율성', 요인3은 '기반시설 쾌적성', 요인4는 '입지 잠재성', 요인5는 '지원시설 충족성'으로 구분할 수 있었다. 이를 이용하여 5개 요인점수의 하위 25%에 해당하는 산업단지를 추출하고 어떠한 쇠퇴영향요인이 잠재하고 있는지를 살펴보았다. 요인분석 결과 시사점은 '시가화 가능성'은 산업단지내 입주 기업업종과 토지이용과의 관련성을 내포하고 있다. '생산효율성'분야는 기업들의 생산성을 높일 수 있는 효율적인 지원방안이 모색될 필요가 있다. '기반시설 쾌적성'요인은 자생적인 재생유도보다는 정부 및 지자체가 직접 관여하여 물리적 정비가 이루어져야 할 것이다. '입지잠재성' 요인은 광역급 인프라 구축, 산단내 기반시설의 개선 및 정비, 지가상승 등을 복합적으로 고려하여 고부가가치 산업 유치를 고려하거나 산업구조고도화를 위한 업종변경 등 장기적이고 전략적인 접근이 필요할 것이다. 마지막으로 '지원시설 충족성'은 필요한 지원시설 공급을 위해 노후산업단지의 정확한 쇠퇴진단을 통해서 유휴부지를 발굴하거나 국 공유지를 활용할 수 있는 방안이 모색될 필요가 있겠다.

• 한국주거학회논문집
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• 제27권4호
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• pp.1-11
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• 2016

This study aims to find out the cause of delay by analyzing the process of 12 Core-based Improvement pilot projects, especially focused on lands, buildings, population status. For this purpose, it performed a literature research on maintenance plan reports, various statistics of building and population status analysis, a field research and an individual interview with public officials in charge at local governments of 12 project districts. The findings are as follows; 1) it was difficult to cope flexibly to environmental changes because the core sector was so large that the plan was led to areal improvement. 2) the project was selected without reflecting the characteristics of the core sector and the area of residents-led renovation properly in terms of building status such as building density and old buildings ratio, 3) the coordinator group for socially disadvantaged class in the district was not operated and thus foundation for residents-led renovation was not set up. In conclusion, it should be presented the proper size of the core sector when the core-based residential environment improvement project is initiated in the future. In addition, building status is taken into consideration when designating the core sector and the area of residents-led renovation. The coordinator group needs to be operated from the early stage of the project as well.

• 한국건축시공학회지
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• 제10권5호
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• pp.113-119
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• 2010

설계강도 80 MPa인 고강도 콘크리트가 B/P에서 대량 생산, 공급되는 현장조건하에서도 시험실 조건과 동일한 재료물성을 발휘하는지 여부를 평가하기 위하여 내화시험과 시험시공을 수행하고, 그 결과를 평가하였다. 내화성능평가 결과, 복합섬유(PP섬유, NY섬유)를 0.075 %혼입한 80 MPa의 고강도 콘크리트가 내화성능과 폭렬방지 성능이 우수한 것으로 나타났다. 고강도 콘크리트 시험시공 결과, 압송 전에는 공기량, 유동성, 압축강도 등을 모두 만족하였으나, 압송 후에는 슬럼프 플로가 목표물성보다 다소 작게 평가되어 개선이 필요한 것으로 판단되었다. 고강도 콘크리트의 수화온도 역시 관련 기준을 만족하였다. 고강도 콘크리트의 단위시간당 타설량은 약 $44m^3$로 우수한 것으로 나타났으며, 충전성 또한 매우 우수한 것으로 평가되었다. 개발된 3성분계 고강도 콘크리트는 실리카 흄이 사용된 기존 고강도콘크리트와 비교하여 경제적이며 경화 전 후의 재료물성과 시공성이 우수하여 초고층 구조물의 건립 시 유용하게 활용될 수 있을 것으로 판단된다.

• Geomechanics and Engineering
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• 제20권2호
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• pp.165-174
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• 2020

The enzyme-induced carbonate precipitation (EICP) method has been investigated to improve the hydro-mechanical properties of natural soil deposits. This study was conducted to explore the stiffness evolution during various stress scenarios. First, the optimal concentration of urea, CaCl₂, and urease for the maximum efficiency of calcite precipitation was identified. The results show that the optimal recipe is 0.5 g/L and 0.9 g/L of urease for 0.5 M CaCl₂ and 1 M CaCl₂ solutions with a urea-CaCl₂ molar ratio of 1.5. The shear stiffness of EICP-treated sands remains constant up to debonding stresses, and further loading induces the reduction of S-wave velocity. It was also found that the debonding stress at which stiffness loss occurs depends on the void ratio, not on cementation solution. Repeated loading-unloading deteriorates the bonding quality, thereby reducing the debonding stress. Scanning electron microscopy and X-ray images reveal that higher concentrations of CaCl₂ solution facilitate heterogeneous nucleation to form larger CaCO₃ nodules and 11-12 % of CaCO₃ forms at the interparticle contact as the main contributor to the evolution of shear stiffness.