• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2023년도 가을학술발표대회논문집
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• pp.163-164
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• 2023

The active promotion of construction technology application, aimed at cost reduction, construction time shortening, and performance enhancement during the implementation of Value Engineering (VE) in design, is underway. However, in the process of deriving VE ideas, it is common to simply reuse VE ideas from similar past construction projects, and the application of construction technology is often insufficient. Therefore, in this study, we intend to establish a database linking construction technology information with Building Information Modeling (BIM) models to activate the application of construction technology in the process of deriving VE ideas.

• 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.332-336
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• 2017

The field of construction and transportation R&D has been increased and improved wih the integration into the ICT. With the rapid trend changes like the Fourth Industrial Revolution, new direction and solution of R&D policy is being explored to prepare for the convergence era with other diverse research areas. In order to present new direction, it is necessary to analyze the external environment influencing construction and transportation field. In this regard, this study analyzes the science and technology policy plan and goal in Korea. In conclusion, through the policy analysis, this study suggests new direction of construction and transportation R&D in Korea.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2006년도 정기학술발표대회 논문집
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• pp.80-86
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• 2006

건설산업의 지속적 성장과 국제적인 기술경쟁력 제고를 위해서는 건설기술 연구개발이 필수적이다. 그러나 우리나라의 건설분야 연구개발 투자는 타 산업에 비해 저조한 실정이며, 정부차원의 연구개발 투자도 외국에 비해 낮은 수준이다. 본 연구에서는 건설기술 연구개발의 투자 현황을 고찰해 보고, 연구개발의 성과를 신기술 및 특허와 관련하여 분석하였다. 그리고 신기술지정제도의 현황과 개선점을 살펴보았다. 이러한 현황 분석을 바탕으로 건설기술 연구개발의 개선 방향을 제시하였다.

• 국제초고층학회논문집
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• 제3권3호
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• pp.205-214
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• 2014

The super high rise building construction is characterized by a large quantity of engineering works and structural components, high demanding of construction technology and complex cross operations. As the height of super high rise building increases, the construction difficulties increase, it is challenging the steel structural building construction technology. In this paper, the key technologies in the construction of Chinese modern super high rise steel structure building have been studied. The innovative tower crane supporting frame suspension disassembly technology has been developed to allow the crane supporting frame to turnover in the air without occupying materials stockyard. A new self-elevating platform technique which is capable of striding over structural barriers has been developed. This new technology allows the platform to be self-elevated along variable cross section column with a maximum 600 mm size change. A new automatic submerged arc welding technology has also been developed to ensure the process continuity and quality stability of welding job on the construction site.

• 한국건설관리학회논문집
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• 제7권6호
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• pp.193-201
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• 2006

건설신기술제도는 1990년도부터 15년간 운영되면서 2004년말 기준 443건이 신기술로 지정되었고, 신기술이 현장에 약 20,000회 이상 활용되는 등 정착단계에 접어들었다. 그러나, 건설신기술의 기술사용료 지급기준이 마련되어 있지 못해, 발주기관별, 신기술항목별로 기술료가 상이하고, 지급절차 및 기준이 없어 혼란을 야기하고 있는 실정이다. 따라서, 본 연구는 건설신기술의 기술사용료 현황 및 문제점을 비교 분석한 결과를 토대로, 향후 건설신기술 사용료의 개선방향을 다각적인 측면으로 제시하고자 한다. 특히, 본 연구는 신기술 사용료 지급기준을 제시하고, 신기술 보호 취지 아래 조사가(공사예정가격)를 기준으로 기술사용요율$({\alpha})$을 정하는 방안을 제안하였다. 이러한 건설신기술이 건설현장에 많이 활용 보급되기 위해서는 우수한 신기술을 지정하는 것도 중요하지만, 지정된 신기술을 건설현장에 활용될 수 있도록 신기술 사용료 지급기준을 마련하는 것이 무엇보다도 필요하다.

• 드라이브 ㆍ 컨트롤
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• 제13권3호
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• pp.53-66
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• 2016

New non-hybrid approaches to improve energy efficiency of construction machineries are reviewed in this paper. Hydraulic systems are classified into four classes according to Backe's classification and commercially promising new technologies are carefully chosen in each class. IMV, 3-Line CPR, Closed Circuit Displacement Control of Differential Cylinder, and Throttle-less Secondary Control are chosen as representative non-hybrid new technologies. Key principle of each technology is explained and representative references which run through each technology are selected. Advantages and weaknesses of each technology are discussed and compared from the view point of construction machinery manufacturers.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2004년도 제5회 정기학술발표대회 논문집
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• pp.490-493
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• 2004

국내 건설산업은 인력관리나 제도의 개선보다는 기술 개발을 통하여 생산성 향상을 할 필요가 있으며 국제건설 시장에서도 기술력 향상을 통하여 경쟁력을 키울 필요가 있다. 정부는 기술 수준의 향상을 위하여 건설신기술지정제도를 제정 $\cdot$ 운영하고 있으나 그 사용실적 또한 처음 기대했던 것만큼의 효과를 보지 못 하고 있다. 따라서 본 논문에서는 지정된 신기술의 대부분을 차지하고 있는 전문건설업체를 중심으로 건설신기술지정 현황을 파악한 후 타 관련 제도와의 비교, 문헌조사 및 설문조사를 동하여 신기술 지정제도의 개선전과 이를 통한 건설신기술 개발의 활성화를 위한 방향을 제시한다.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1248-1253
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• 2009

Although there have been many efforts to reduce accidents on construction sites, such accidents continue to occur. New technologies have recently been developed to improve safety and their performance needs to be evaluated to determine their suitability prior to the application. The assessment for safety performance mainly is conducted depending on qualitative and subjective judgment of supervisors. However, there are rarely proper approaches to assess such qualitative measures. Therefore, we propose a fuzzy-based approach to assessing the performance of a new technology. The assessment of a new technology, called a mobile detector (MD), was carried out as a case study. The output is compared with those by a numerical simulation. As a result, the fuzzy-based performance assessment is shown to be appropriate for this evaluation.

• International Journal of Railway
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• 제9권1호
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• pp.21-26
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• 2016

When excavation under existing structure is planned for a new construction project, the underpinning method is one of the most applicable construction methods. This study introduces a new modified underpinning method which is applied to construct a new subway line in Seoul Metropolitan. The new subway line was designed to pass underneath the existing subway line. Existing subway line carries about 2 million passengers daily, which is 33% of total passengers using subway in Seoul, and is the only circulation line in Seoul. Subway trains are passing 540 times through this section in a day. By applying a new underpinning method, the subway box structure of line is exposed 54m in the air supported by bearing piles. The proposed method was carefully monitored using heavy instrumentation system during construction. This study proposed and verified the application of the modified underpinning method, which can reduce construction period by 1.5 times and the construction cost by 1.2 times comparing with conventional method. The importance of considering construction sequence is investigated and verified by analyzed data non-considering construction sequence. The unexpected heaving which can bring up a dangerous situation for train running stability were measured, so this study shows that the upward movement has to be analyzed in designing process. As the use of underground space increases, the proposed method can be a good example of underground development.

• Geomechanics and Engineering
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• 제35권4호
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• pp.395-409
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• 2023

Long-span suspension bridges have tunnel anchor systems to maintain stable cables. More investigations are required to determine how closely tunnel excavation beneath the tunnel anchor impacts the stability of the tunnel anchor. In order to investigate the impact of the adjacent tunnel's excavation on the stability of the tunnel anchor, a large-span suspension bridge tunnel anchor is utilised as an example in a three-dimensional numerical simulation approach. In order to explore the deformation control mechanism, orthogonal tests are employed to pinpoint the major impacting elements. The construction of an advanced pipe shed, strengthening the primary support. Moreover, according to the findings the grouting reinforcement of the surrounding rock, have a significant control effect on the settlement of the tunnel vault and plug body. However, reducing the lag distance of the secondary lining does not have such big influence. The greatest way to control tunnel vault settling is to use the grout reinforcement, which increases the bearing capacity and strength of the surrounding rock. This greatly minimizes the size of the tunnel excavation disturbance area. Advanced pipe shed can not only increase the surrounding rock's bearing capacity at the pipe shed, but can also prevent the tunnel vault from connecting with the disturbance area at the bottom of the anchorage tunnel, reduce the range of shear failure area outside the anchorage tunnel, and have the best impact on the plug body's settlement control.