• 보일러설비
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• s.79
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• pp.111-114
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• 2000

본 고에서는 향후 빙축열시스템의 주류를 이룰 것으로 예상되어 활발히 연구개발이 추진되고 있는 Ice Slurry 방식 빙축열시스템에 대하여, 현재까지 개발되었거나 개발중인 시스템들의 특징, 종류, 응용분야 등을 중심으로 한 기술개발 동향 및 향후 추진되어야 할 연구개발방향 등, Ice Slurry 방식 빙축열시스템 전반에 걸친 연구개발 현황과 향후 전망에 대하여 알아보았다.

• 한국도로학회지:도로
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• v.4 no.4 s.14
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• pp.3-15
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• 2002

지금까지 1940년대부터 최근까지 건설된 미국의 시험도로에 대한 목적과 주요특징 등에 대해 알아보았다. 과거와 다르게 최근 건설된 시험도로들은 크게 도로 본선 옆에 시공한 시험도로의 형태와 시험 주로 형식의 루프구간으로 이루어져 있음을 알 수 있었다. 이는 시험주로에서는 포장재료 영향 평가를 목적으로, 시험도로에서는 포장층의 구조적 영향을 파악하기 위한 것으로 판단된다. 표 4는 최근 미국에서 건설된 시험도로를 간략하게 요약한 것이다.

• Food Science and Industry
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• v.45 no.1
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• pp.2-11
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• 2012

• Journal of the Korea Institute of Building Construction
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• v.10 no.3
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• pp.145-153
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• 2010

Public institutions and owners have been introduced to Building Information Modeling (BIM) tools. BIM has become an important factor in the design process in undergrad programs. The purpose of this study is to demonstrate the improvement of the architectural engineering design process through an analysis of BIM courses. BIM education courses are analyzed to compare the level of detail in BIM education. An architectural engineering design class needs to involve BIM in the introduction of an integrated design process. An architectural engineering design process needs to be based on understanding design, building structures, construction and building services. 3D Modeling helps support an understanding of building structure and eco-friendly element analysis. The new process of architectural engineering design education is proposed as a result of this research.

• Journal of the Korea institute for structural maintenance and inspection
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• v.16 no.3
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• pp.92-98
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• 2012

This study shows details of a specific space truss frame structure devised to carry out maintenance and repair temporary works in tunnels. The purpose of this study is to verify structural safety and function of the innovative truss structure through an analysis tool, i.e.. ABAQUS, which is a suite of software application for finite element analysis and computer aided engineering. And then optimized size, i.e., thickness and diameter of truss members is evaluated in practice. In this study, construction methods in the temporary works are additionally represented by using the new space truss frame structure.

• Magazine of the Korea Concrete Institute
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• v.6 no.4
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• pp.131-140
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• 1994

Recently, tunnels are increasingly constructed in this country with the increased construction of highways, high-speed railways and subways. Shotcreting is one of the major processes in the tunnel construction. Many problems, however, exist in the current shotcreting practice. The purpose of the present study is, therefore, to explore the problems in the current shotcreting practice, to derive an optimum mix for efficient shotcreting, To this end, extensive experimental study has been conducted. Optimum mixes with high quality and economy were derived. The present study provides a firm bast: in our country to apply high-quality shotcrete in tunnel construction.

• Journal of the Korean Geotechnical Society
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• v.35 no.8
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• pp.17-30
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• 2019

Based on pile load test results for various pile types that were constructed in-situ and pile design data of prebored PHC piles, the ratio of skin friction to total capacity (SRF) was analyzed. A SRF distribution range from the pile load test results for pilot test prebored PHC piles was 42~99% regardless of relative penetration lengths, soil types, and pile load test types. However, a SRF distribution range from the pile design data for prebored PHC piles was 20~53% regardless of relative penetration lengths and pile diameters. Also, a SRF distribution range from the restrike dynamic pile load test results for pretest working prebored PHC piles was a scattered range of 4~83% regardless of pile diameters, relative penetration lengths and soil types. The scattered SRF of pretest working piles was caused to the quality control issue on the filling of cement milk around piles and this quality control issue should be improved. The average SRF calculated by the current design method was estimated to be 2.2 times lower than the average SRF of the pilot test piles. It is because skin friction resistance is calculated at a very low level. Therefore, a new design method for skin friction will be proposed based on this study.

• Journal of Korean Tunnelling and Underground Space Association
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• v.26 no.3
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• pp.223-242
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• 2024

Single-shell tunnels, introduced to South Korea in the early 2000s, have not been adopted for the main tunnels of roads or railways over the past two decades despite several attempts starting with the Gwangju City Bypass. This reluctance likely arises from concerns about the long-term performance of supporting materials and the absence of relevant criteria and specifications. However, recent progress, including the incorporation of high-strength shotcrete standards and corrosion-resistant rock bolt specifications, alongside equipment and technique enhancements, necessitates a reassessment of single-shell tunnels. While the single-shell tunnel method offers advantages in environmental impact, construction cost and period compared to the conventional NATM, it is crucial to address the challenges, such as limited design and construction experience, incomplete detailed standards, and insufficient construction specifications, through further research and pilot projects. This paper reviewed the basic principles of single-shell tunnel, current application and research status, technical development trends, criteria and specifications, and remaining challenges. It aims to reignite discussions on the feasibility of applying single-shell tunnels in South Korea.

• Korean Journal of Construction Engineering and Management
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• v.7 no.5
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• pp.128-137
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• 2006

This paper is to develop curtain wall process life-cycle system in high-rise buildings in order to establish effective cooperation communication channels among the diverse constituents. This paper is to provide a base toward a curtain wall life-cycle management system to support decision making and the effective flow in light of information and materials. The four objectives of the research are 1) the analysis of the current curtain wall life-cycle process, 2) the analysis and development of the curtain wall design process As-Is model, and 3) the Muda analysis of the design process As-Is model and the suggestion of the improvements, 4) the development of curtain wall design To-Be model and comparative analysis of the improvement in terms of value streams. This research indicates the wastes decrease (or the values increase) from 6.7% up to 100% in different decision criteria through the improvement by the comparative analysis between the As-ls and To-Be curtain wall design process. This research suggests the potential improvement by VSM and a curtain wall life-cycle management system in curtain wall construction for diverse constituents be significant.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2004.11a
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• pp.26-30
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• 2004

중국심천 삼성코닝 프로젝트 (SSG Expansion Project)는 전문적인 건설인력이 없는 발주처를 대신하여 설계단계에서 최종 턴 오버(turn over)까지 건설 전 과정에 대하여 CM을 수행한 사례로서 한국기업이 중국에서의 CM 업무를 성공적으로 수행한 대표적인 사례이며, 대규모 공장건설에 있어 건설과 생산설비의 설치에 대한 종합적인 공정관리와 설계, 시공을 동시에 수행하는 Fast Track 방식에서 범할 수 있는 설계오류 및 풀질저하에 대한 사전 예측관리, 현지의 건설특성에 적합한 각종 공법 및 요소기술의 제시를 통한 시공성 향상, 원가절감, 공기단축에 기여로 유사 프로젝트 대비 4개월 이상 단축하여 성공적으로 제품을 생산하는 성과를 달성한 사례이다. 이에 본 연구에서는 프로젝트의 각 단계별 주요 CM업무 수행현황 및 중국건설의 특징을 고찰하고, 한국기업의 중국 CM시장 진출 가능성과 진출을 위한 사전준비에 필요한 사업 단계별 유의사항에 대한 검토를 목적으로 한다. 국내 건설경기가 침체되어 있는 현재 본 연구를 통하여 중국 건설현황에 대한 올바른 이해와 중국 CM시장의 진출 및 성공에 밑거름이 될 수 있기를 기대한다.