• Geomechanics and Engineering
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• 제21권3호
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• pp.301-313
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• 2020

In the process of mining closely spaced coal seams, the problem of roadway arrangement in lower coal seams has long been a concern. By means of mechanical model calculation and numerical simulation postprocessing, the distribution of the stress deviator below the floor of a goaf and the evolution of the stress deviator in the vertical and horizontal directions are studied under the influence of horizontal stress. The results of this theoretical study and numerical simulation show that the stress deviator decreases exponentially with increasing depth from the floor below the coal side. With the increase in the horizontal stress coefficient λ, the stress deviator concentration area shifts. The stress deviator is concentrated within 10 m below the goaf and 15 m laterally from the coal side; thus, the magnitude of the surrounding rock stress deviator should be considered when planning the construction of a roadway in this area.

• 건축역사연구
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• 제30권5호
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• pp.29-42
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• 2021

The Don-am district is a residential area that was supplied in 1936 as a land readjustment project(Tojiguhoekjeongri). The Don-am district was newly supplied with residential areas and urban hanoks were built in large numbers. The Don-am district was influenced by urban planning and legislation at that time. These affected in the layout and plan of urban hanok. Residential block in the Don-am district were developed sequentially from the late 1930s to the 1960s. Residential block were divided by modern construction company and sold by individual lots. The blocks supplied to the Don-am district made uniformly the corner out-off(Ga gak) for creating a vehicle-centered road. So urban hanoks located in the corner plot was transformed in response to the road. Residential blocks in Don-am district was divided into three to four rows. Therefore, alleys were created inside the block. Newly made alleys consist of a privately owned road(Sa-do), a public road(Gong-Do), and open space in the site. And the alleys were used as an entry space for sharing with neighboring. Urban hanoks of Don-am district have had changed and adapted to the formation of these alleys.

• Wind and Structures
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• 제28권2호
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• pp.111-128
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• 2019

In this paper an octagon plan shaped building (study building) in presence of three square plan shaped building is subjected to boundary layer wind flow and the interference effects on the study building is investigated using Computational fluid dynamics. The variation of the pressure coefficients on different faces of the octagon building is studied both in isolated and interference conditions. Interference Factors (IF) are calculated for different faces of the study building which can be a powerful tool for designing similar plan shaped buildings in similar conditions. A metamodel of the IF, in terms of the distances among buildings is also established using Response Surface Method (RSM). This set of equations are optimized to get the optimum values of the distances where the IF is unity. An upstream Interference zone for this building setup and wind environment is established from these data. Uncertainty principle is also utilised to determine the optimum positions of the interfering buildings considering the uncertain nature of wind flow for minimum interference effect. The proposed procedure is observed to be computationally efficient in deciding optimum layout at buildings often required in city planning. The results show that the proposed RSM-based optimization approach captures the interference zone accurately with substantially less number of experiments.

• 대한건축학회논문집:계획계
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• 제34권6호
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• pp.77-84
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• 2018

China has been pursuing continuous education reforms in order to complement the shortcomings of traditional education and to prepare for a new era in accordance with the development of the economy and society. School facilities were rapidly increased due to rapid population growth in the 60s and 70s, but the quality of the school facilities was low considering the efficiency and economy, and the regional variation was serious. The National Standard for School Design was enacted in 1986. Since then, we have proposed a new national standard in 2011 in accordance with social change and educational needs, and it has reached the present time. The purpose of this study is to analyze the main contents of "Code for design of school(GB50099-2011)" which is a standard study for Chinese school design as a basic study to understand changes in school architecture in China.

• 대한건축학회논문집:계획계
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• 제35권12호
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• pp.127-136
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• 2019

National Housing in Janghang was built intensively from the mid 1970s to the early 1980s, and has become a collective complex at Jangma-ro and Shinchangdong-ro. This Company House is a typical building for employee welfare, at the same time shows modern industrialization and urbanization. In general, it forms a housing complex and serves as industrial town. Reflecting the characteristics of Janghang, the housing complex is called National House based on the supply method and is also classified French Styled House in terms of housing style. Although Janghang was one of small local administrative units, it pursued urban style with mini-2-story. It has the typical characteristics as follows: division of the owner's living space and rental room, and independent layout of restrooms and washrooms. House is transformed to accommodate residents' lifestyles, so National Housing Complex of Janghang has undergone various changes such as the replacement of spatial structures and exterior materials for 40 years after construction. National Housing in Janghang is a symbol of local identity and an important spatial asset that shows the urban and architectural characteristics and changes.

• 대한건축학회논문집:계획계
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• 제35권12호
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• pp.75-82
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• 2019

After 1840 the first opium war, that changed the social nature and living habitats in China. The purpose of this study is to observe the influence of the war on the plan layout of traditional Chinese residential houses in Beijing Siheyuan. To find out the changes that were made after 1840, and reservation of the past, the space syntax model is used to analyze different social contexts and also compare the ancient and modern residential buildings. The result of the study indicate the following: Before the war, the ancient Siheyuan people's way of life strictly abide by the hierarchy system; External emphasis shows the host's status. However, in modern times, the social status became equal, efficient and harmonious relationship internally, while externally, it arranged the orientation and position of buildings to adapt to the natural environment. However, the boundaries between family members and visitors the emphasis on the courtyard and respect for private life remain unchanged.

• 국제초고층학회논문집
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• 제12권1호
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• pp.35-47
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• 2023

The transport system and its infrastructure are not only the fundamental means of sustaining the operation of contemporary cities, but also important drivers for the evolution of urban form. Rail transit, critical to improving the operational efficiency and optimizing the spatial layout in cities, is one of the critical conditions for high-density areas with limited land and concentrated resources to be compact to take on complex challenges. As a node element of infrastructure, rail transit entrances are the most important points connecting the rail transit system with urban space. Although influenced by urban form, their quantity and location also influence and shape the evolution of urban space form. Based on the development gap of high-density areas in various contexts, focusing on various rail transit stations in Asia, this research analyzes the correlation between rail transit entrances and peripheral high-density urban form in a delicate, dynamic and granular way. The research considers both horizontal and vertical perspectives, in combination with the urban evolution process in time series, to explore the development trend of high-density urban form in Asia from the aspect of correlation, and building a new foundation for research on urban form, suitable for different types of cities.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2021년도 학술발표회
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• pp.366-366
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• 2021

도시의 기본 인프라인 배수망은 도시의 홍수를 막기위한 중요한 시설로 강우로 발생되는 유출수를 최대한 빨리 도시 밖으로 배수할 수 있도록 설계되어 왔다. 하지만 기후변화로 인하여 극한강우 빈도의 증가 및 급속한 도시화는 도시유역의 유출수를 빨리 배제하는 것이 하류의 홍수부담량을 증가시켜 하류의 홍수피해가 커지는 역설적인 현상을 초래하고 있다. 이러한 현상은 빠른 배수를 목적으로 설계되었던 배수망의 기존 설계방식이 더 이상 유의미하다고 할 수 없으며, 새로운 형태 또는 새로운 개념의 배수망 설계방식이 필요한 시점이라 할 수 있다. 본 연구는 폭함수를 이용하여 유출형태를 분석하였다. 총 512개의 조합된 네트워크를 통하여 각 네트워크별 최대 유출량 및 최대 유로 연장을 분석하여 3개의 그룹으로 분류하였다. 일부 그룹은 상류에 만곡도가 낮은 배수망을 배치하고 하류에 만곡도가 높은 배수망을 배치할 경우 유출량이 크게 증가하였으나, 그 반대의 경우인 상류에 만곡도가 높은 배수망을 배치하고 중류에 만곡도가 낮은 배수망을 배치할 경우 하류의 만곡도에 관계 없이 유출량이 감소하는 결과를 얻을수 있었다. 또한 일부 그룹에서는 상류의 만곡도를 낮게, 중류의 만곡도를 낮게, 하류의 만곡도를 낮게 배치할 경우 유량을 최소화 할 수 있는 것으로 분석되었다. 이러한 결과는 향후 배수망 설계 방식에 대한 새로운 관점을 제시하며, 배수망을 통하여 유출량을 저감시키는 것은 기존의 홍수저감 방식에 사용되는 비용절감 및 인위적 조작이 필요한 홍수저감 시설의 설치를 줄임으로서 지속가능한 도시홍수저감에 도움이 될 것으로 사료된다.

• 국제학술발표논문집
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• The 7th International Conference on Construction Engineering and Project Management Summit Forum on Sustainable Construction and Management
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• pp.337-345
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• 2017

The sponge city construction is being carried out in China, and how to reasonably determine the scale of the sponge city facilities is a key point that the planners and designers should seriously solve. In this paper, taking determination of the sponge city facilities in a residential building in Shenzhen as an example, the layout and scales of the rainwater tanks, raingardens, ecological roofs and permeable pavements are decided by using the volumetric method and stormwater management model (SWMM). The calculated results by the two methods are compared and analyzed. The results show that the scales of the sponge city facilities determined by the two methods are almost the same, and it means that any method can be used to determine the scale of sponge city facilities. The volumetric method is relatively simple, and it is suggested to use to determine the scale of sponge city facilities during planning stage. While SWMM is more complex and requires a lot of input conditions, but it can provide the reduction effects of the sponge city facilities for rainfalls with different recurrence periods. Therefore, SWMM is recommended to use the calculation of the hydrological process of the sponge city facilities during the design stage.

• 한국건축시공학회지
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• 제19권3호
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• pp.263-272
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• 2019

BIM과 모듈러 공법은 건설 산업의 위기를 극복하는데 도움이 되는 중요한 기술로 인식되고 있다. 그러나 현재 국내 모듈러 건축 프로젝트에서 BIM의 활용은 미미한 수준이며 구체적인 활용지침이 제시되지 못하고 있다. 이에 따라 본 연구에서는 모듈러 건축공사의 현장시공계획단계를 위한 BIM 활용성 분석을 목적으로 하였다. 첫째, 기존문헌 고찰과 전문가 인터뷰를 통해 적용 가능한 BIM 업무를 선정하였으며, 모듈러 건축공사의 시공계획서를 분석하여 BIM 활용 업무를 5가지로 분류하였다. 이후 설문을 통해 각 항목에 대한 BIM 활용성을 필요성과 효율성으로 분석하였으며 이를 BIM utilization Index(BIM UI)를 통해 제시하였다. 설문 결과 모듈간 접합부 시공상세도 구축, 양중계획 검토, 기타공사 주요 시공부위의 상세도 구축, 현장공정 계획 검토, 그리고 현장배치계획 검토가 0.811, 0.787, 0.770, 0.729, 0.699 순으로 분석되었다. 이후 사례연구를 통해 BIM을 적용한 BIM 기반 시공계획서를 도출하여 전문가 자문을 실시하고 논의하였다. 본 연구의 결과는 향후 모듈러 프로젝트에서 BIM의 적정한 활용 방안을 제시하는데 활용될 수 있을 것이다.