• Journal of Korean Tunnelling and Underground Space Association
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• v.19 no.6
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• pp.937-957
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• 2017

Urban roads are not only congested with vehicles and pedestrians, but also have many pipelines buried to provide convenience for inhabitants. In addition, urban inhabitants live comfortably in buildings adjacent to the road for residence, business, commerce, rest and so on. Therefore, despite the high cost of land, urban underground buildings with high land use efficiency are constantly being built. Recently, the construction of underground buildings has caused social problems such as the collapse of surrounding roads and adjacent buildings. Institutional improvement is being actively carried out to improve this. In this study, a new type of MSRC diaphragm wall was developed and a study on the construction method of underground building was carried out. It is intended to secure the underground excavation safety of underground buildings in urban areas and effectively prevent land subsidence complaints. Also, a reasonable design method of MSRC diaphragm walls using the ultimate strength design method is presented through the flexural performance Experiment.

• Journal of the Korea Institute of Building Construction
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• v.21 no.6
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• pp.653-664
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• 2021

As the construction standards for energy-saving eco-friendly housing have recently been strengthened, the proportion of window work has increased with the demand for high-efficiency housing. Windows have high frequency of use, and there is the potential for many defects to occur depending on the characteristics of construction. According to a government agency's survey of defects in public rental apartment housing, defects in the windows work accounted for the highest portion of complaints received. Accordingly, related previous studies were considered, and it was found that the existing studies in Korea lacked research that reflected the construction characteristics of window work and the importance of maintenance. In addition, existing overseas studies considered both the constructor and the resident's position, considering the cost aspect together, and showed a trend of structuring the relationship between defects and causes. Therefore, this study will analyze the causes of defects that can occur in the construction phase of the windows work, reflect the construction characteristics, and derive major factors that consider the importance of maintenance based on the possibility of recurrence after repairing defects. Ultimately, this research will contribute to preventing defects in the construction phase and reducing maintenance costs by presenting a highly effective defect management plan through selecting the major factors for each defect type that can be intuitively judged by analyzing the causal relationship between defect types and causes.

• Korean Journal of Construction Engineering and Management
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• v.3 no.1 s.9
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• pp.91-96
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• 2002

The purpose of this study is to present a systemized flow of temporary facility(TF) planning information. The current TF planning tends to be established by subjective decision making of field workers. Therefore TF planning needs more systemized information flow to provide a reliable schedule. The study was implemented through interview with experts for reliable TF planning. The main contents of the study are as follows; 1) TF planning process model(IDEF0) are established. 2) Various information flow diagrams proposed to support TF planning decision-making. The study recommends that, as a future research, the computer system be developed for application of the information flow.

• Journal of the Korea Institute of Building Construction
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• v.18 no.6
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• pp.577-584
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• 2018

In This study, length variation test, shock test, and noise test were conducted to evaluate the performance of synthetic resin form. In addition, the handling easiness of synthetic resin form was examined through field application. Results of both thermal length variation test and shock test satisfied the KS standards. for noise test, the result of uro-form was 106.7dB(A) in average while that of synthetic resin form was 100.4dB(A) in average. It is considered that the high sound pressure level of euro-form with this noise characteristic may have negative physical and psychological impact on people who are consistently exposed in the residential area. Finally, there was no warping or bulging of the mold during concrete placement in the field application. Also, the concrete surface finish of synthetic resin form was better than that of euro-form.

• Journal of the Korea Institute of Building Construction
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• v.21 no.4
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• pp.333-345
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• 2021

Due to the improved living standards and the expectation on higher-quality housing of tenements, complaints on the defects in the buildings are increasing every year. Also, the types of flaws are changing. We surveyed one hundred buildings(9,748 households) in 12 complexes across the country to investigate the shifted types. The number of defects received increased by about 1.6 times compared to 10 years ago, while the categories did not change. The report on the malfunctioning mechanical equipment has increased 1.4 times than ten years ago, and the types of the problem changed. The proportion of general parts(water supplement, drainage, water pressure) has decreased about 25% compared to 10 years ago. This is because the items related to the indoor environment become standardized in apartment housing. Therefore the problems related to those have been increased. As the specialized items applied to the tenement building are showing gradual expansion, the defect reports concerning those will also grow.

• Journal of the Korea Institute of Building Construction
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• v.24 no.2
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• pp.261-271
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• 2024

The widespread adoption of aluminum slab formwork in modern construction, evident in both domestic and international projects, offers numerous advantages. However, a critical challenge persists regarding the dismantling process for these slabs. The current industry standard involves dropping the slabs to the ground floor upon removal. This practice raises several concerns, notably the generation of significant noise pollution that disrupts nearby communities. More importantly, the risk of worker injuries due to falls from height during the dismantling process is a serious safety hazard. Additionally, the impact from dropping the slabs can damage the aluminum itself, leading to increased replacement costs. These drawbacks necessitate the exploration of alternative dismantling techniques that prioritize worker safety, material sustainability, and overall process efficiency. Accordingly, in this study, when the entire first-generation slab formwork of an apartment house is simultaneously lowered to a reachable position for workers, it is then disassembled and lifted for transport to the next floor. This approach has the potential to demonstrate improvements in safety, quality, economy, and process efficiency.

• Journal of Advanced Navigation Technology
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• v.11 no.3
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• pp.343-349
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• 2007

This paper addressed a recognition method of land registration map based on fuzzy inference scheme, which is able to solve the time complexity problem of typical method [Fig. 2]. Not only line color, thickness but also number, character are used as a fuzzy input parameter. It concentrated on generation of fuzzy association map, and useful informations are extracted result from fuzzy inference. These results are precedent process for estimating the construction space and restoring 3D automatic modeling. It can also utilize to the internet service acceleration propulsion business such as u-Gov based land registration service.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.05a
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• pp.1508-1511
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• 2007

부동산문제등과 관련하여 지적(地籍) 및 용도지역지구 자료의 중요성이 부각되면서, 복잡한 법적 절차를 갖춘 시스템이 구축되고 있다. 그 중 한국토지정보시스템(KLIS)은 각 지자체별 지적 및 도시계획 관련 데이터 구축, 업무시스템 및 건축 인허가등의 민원발급, 부동산 관련 다양한 통계 등을 제공하고 있다. 그러나, 이 시스템이 설치되어 있는 시군구 중 일반구(區)를 포함한 시(市)의 경우는 법적인 편집 권한이 다른 기관에서 공통 데이터베이스의 편집에 따른 데이터 무결성 문제와 네트워크 장애에 따른 업무 지연 등의 업무 연속성 문제를 야기할 수 있다. 본 논문에서는 일반구가 포함된 시(市)에서의 지적도편집, 용도지역지구도 편집 등 이종의 기관에서 이루어지는 분산 환경 데이터베이스편집에 따른 동기화의 문제점을 제기하고, 이러한 문제점을 보완할 수 있도록 트랜잭션 단위로 공간 및 속성 데이터의 복제를 담당하는 Replicator를 이용한 분산 데이터베이스 동기화 아키텍처를 제안하고, 동기화부분과 표준화부분, 트랜잭션관리부분으로 구성되어 있는 Replicator의 구성요소를 설계 및 구현하고 Replicator를 이용한 분산 데이터베이스의 변경부분을 미반영 데이터베이스에 반영하는 처리절차와 처리 후 결과를 제시하여, 지적 및 용도지역관련 데이터를 두 개 이상의 기관에서 동시에 편집한 내용이 실시간으로 두 기관의 분산 데이터베이스에 변경 분이 반영되어 모두 동기화 되어 있는 것을 공간데이터 편집기로 확인해 볼 수 있었다.

• Journal of the Korean Society of Safety
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• v.20 no.4 s.72
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• pp.97-105
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• 2005

As construction project is becoming larger, construction progress and works are more various and complex according to recent Korean construction tendency. The growth of construction induces much pollution on the progress of construction and the problems due to the construction pollution are raised into social problem strongly, because it is increasing the need on the quality of lift and the desire of clean environment. This study aimed to seek far the effective solving plan of the construction popular complaints by surveying the real condition of construction popular complaints and analyzing the cause and tansaction period of popular complaints. For this study, the laws related and popular complaints were analysed focusing on the documents in low district offices of Gwangju from 2000 to 2004. As a result, the types of construction popular complaints were divided into 17 and the causes were as follows in order: crack and subsidence of ground(14.90%), infringement of private life(11.55%), noise(10.80%), infringement of a right to sunshine(10.07%) and breakdown(6.7%). Consequently, it is considered that these complaints are occurred by physical and environmental causes.

• Journal of the Korea Institute of Building Construction
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• v.17 no.4
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• pp.349-360
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• 2017

In concrete construction work, formwork is an important process that accounts for 10% of the total construction cost. Recent buildings are becoming bigger and higher. In order to maximize the efficiency and safety of this formwork, the system of formworking has been systematized. However, the human accidents and the noise complaints arise from dismantling processes frequently occur. In order to solve these problems, most of them are dependent on foreign technology, but they do not take into consideration the conditions of domestic construction site. In this study, we developed a table type multi-drop system form for a slab and beam which can improve the process, safety and reduction of disassembly noise, and evaluated the physical properties of the main members which are used in the system. The results of this study show that there is sufficient strength to be used as a slab and a laying material for both a yoke beam and a supporting post. The noise level is improved compared to existing method.