• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2015년도 추계 학술논문 발표대회
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• pp.170-171
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• 2015

Resource procurement and material handling are considered as a significant part of construction project especially in large or tall building construction site. There are multiple variables that must be considered in a construction site during finishing work such as movement of materials, equipments, and workers. Therefore, it is difficult for construction workers to find the material handling path solely by intuition. The aim of this study is to propose a real-time path finding model suitable for complicated logistics flow in the field. The model explores the optimal transport path of finishing material with its basis on optimization algorithm, and it determines the direction of the Smart Sign. The proposed model is expected to be utilized for planning of efficient finishing material handling.

• 국제학술발표논문집
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• The 2th International Conference on Construction Engineering and Project Management
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• pp.450-458
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• 2007

This paper presents the results of a statistical analysis and its research findings focusing on the learning aspect in the process of international joint ventures (IJVs). The contents of this paper is derived from a sample of 96 field cases based on a proposed conceptual model of effective learning for international construction joint ventures (ICJVs). The paper presents a brief review on the conceptual model with hypotheses and summarized the key results of statistical analysis including factor and multiple regression analysis for the testing of the validity of the proposed conceptual model and its associated research hypotheses. Among other research findings, the research confirms that ICJVs provides an excellent platform of in-action learning for construction organization and suggests that good outcomes in learning could be reaped by a company who has a clear learning intent from the beginning and subsequently take corresponding learning actions during the full process of the joint venture.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2022년도 봄 학술논문 발표대회
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• pp.225-226
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• 2022

The construction industry, which has a labour-intensive and conservative nature, is exclusive to adopt new technologies. However, the construction industry is viably introducing the 4th Industrial Revolution technologies represented by artificial intelligence, Internet of Things, robotics and unmanned transportation to promote change into a smart industry. An image-based artificial intelligence technology is a field of computer vision technology that refers to machines mimicking human visual recognition of objects from pictures or videos. The purpose of this article is to explore image-based artificial intelligence technologies which would be able to apply to the construction sites. In this study, we show two examples which is one for a construction waste classification model and another for cast in-situ anchor bolts defection detection model. Image-based intelligence technologies would be used for various measurement, classification, and detection works that occur in the construction projects.

• 한국건축시공학회지
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• 제11권5호
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• pp.482-500
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• 2011

In apartment housing construction, window frame installation work, which is conducted after the structural framework, is very important, because its completion time directly affects the starting time of successive interior finishing works, as well as the overall construction period. Construction delays in interior finishing works might occur due to problems inherent to the conventional window frame installation method, such as the poor verticality of window frames, and the water leakage around them. The primary objective of this study is to analyze the problems of a 'Gangform integrated PVC window frame pre-installation method' based on its pilot test results. Next, this study proposes an improved conceptual model that enables the end users to enhance the field applicability of this method in terms of productivity, time, and cost. The field applicability of the proposed 'Gangform integrated PVC window frame pre-installation method' was also verified through a survey.

• 한국안전학회지
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• 제19권2호
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• pp.75-87
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• 2004

This study suggests a safety management model for construction management (CM) suitable to domestic conditions so that inefficiency resulted from the operation of construction projects by public and private indtitutes according to different systems can be eliminated for the securing of systematic and efficient safety managment. Based on the suggested safety management model, this study also develops a safety management information system that can efficiently and consistently manage and maintain a large quantity of information, and give necessary supports in a speedy way in the managing of construction projects.

• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.256-261
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• 2011

Labor productivity is a significant factor related to control time, cost, and quality. Many researchers have developed models to define method of measuring the relationship between productivity and various constraints such as the size of working area, maximum working hours, and the crew composition. Most of the previous research has focused on estimating productivity; however, this research concentrates on estimating labor productivity and developing time and cost data for repetitive concrete pouring activity. In Korea, "Standard Estimating" only contains the average productivity data of the construction industry, and it is difficult to predict the time and cost of any particular project; hence, there are some errors in estimating duration and cost for individual activity and project. To address these issues, this research collects data, measures productivity, and develops time and cost data using labor productivity based on field conditions from the collected data. A probabilistic approach is also proposed to develop data. A case study is performed to validate this process using actual data collected from construction sites and it is possible that the result will be used as the EVMS baseline of cost management and schedule management.

• 한국해안해양공학회지
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• 제19권1호
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• pp.57-65
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• 2007

천해파랑을 산정하기 위하여 천수, 굴절, 회절, 반사 및 쇄파 등의 파랑변형요소를 고려하는 대부분의 수치모델은 천해역에서의 바람장을 수치모델과 결합하여 천해파랑을 산정하고 있다. 그리고, 일반적으로 천해역에서 바람장을 산정하는 경우에 태풍모델로부터 얻어진 바람장을 해상풍으로 변환하여 사용하고 있다. 그러나, 이러한 해상풍 산정법은 해상풍의 평가에 중요한 요소로 작용될 수 있는 육상지형의 영향에 대해서는 고려하고 있지 않다. 본 연구는 천해역에서의 해상풍 산정에 대하여 육상지형의 영향을 고려함으로써, 결과적으로 정도 높은 천해파랑산정을 목적으로 한다. 먼저 지역적으로 차폐 및 개방되어 있는 해역을 대상으로 태풍모델로부터 얻어진 해상풍과 본 연구에서 적용하는 육상지형의 영향을 고려할 수 있는 MASCON모델로 산정된 해상풍의 결과를 상호 비교 검토한다. 그리고, 각 모델로부터 얻어진 해상풍을 SWAN모델에 적용하여 천해파랑을 산정하며, 이의 결과를 상호 비교 검토한다. 검토된 결과로부터 정도 높은 천해파랑산정을 위한 MASCON모델의 필요성을 논의한다.

• Spatial Information Research
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• 제19권6호
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• pp.123-131
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• 2011

본 연구는 최근 급속도로 발전하고 있는 IT기술을 건술 분야와 융합하여 얻을 수 있는 서비스 모델을 구축함을 목적으로 한다. 기존의 전통적인 건설 산업에 첨단 IT기술을 선택적으로 융합시켜 건설산업을 단순 노동집약적 산업에서 고부가가치 기술집약적인 산업으로 전환시킴으로써, 생산성 제고는 물론 새로운 시장 창출을 도모하고자 하였다. 건설과 IT기술이 융합될 수 있는 가장 이상적인 분야는 최근 국내외적으로 부각되고 있는 U-City 산업분야이다. 따라서, 본 연구에서는 현재 건설 산업 또는 U-City 산업에 활용되고 있는 각종 IT기술에 대한 현황을 조사 분석하고 향후 건설 분야에서 유망한 IT기술에 대하여 수요자 요구분석을 통해 우선순위를 도출하였다. 또한, 이를 기반으로 U-City산업과 IT산업에 대한 환경과 전망분석을 통해 이를 융합한 U-City 서비스 모델을 구축하기 위한 방안을 제시하였다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2009년도 춘계 학술발표회
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• pp.640-648
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• 2009

Recently the truction of coastal reclaimation work has been extensively implemented in Korea. The Sondo New City is being established on the reclaimed land from the sea, construction companies of metro construction are planing to pull-out the sheet pile for saving the construction cost. In the case of soft marine clay, it is very difficult to pull-out the sheet pile by using the hydraulic hammer difficult. Therefore, the man of the field must be aware of vibration effect to the ground and the structure. For understanding the vibration effect to the ground during subway construction, the model was formulated with 1/25 braced-cut for subway construction. Scott and Iai(1989) proposed the law of the similarity for other experimental conditions. The laboratory model test was conducted under the vibration condition of sheet pile pulling out. The settlement on the ground surface was measured during the shaking table test. The pore water pressure was also monitored in the upper, middle, and lower layers of soil. The field settlement level and the pore water pressure can be predicted by using the results of the laboratory shaking table test.

• 한국지구과학회지
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• 제39권2호
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• pp.178-192
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• 2018

본 연구의 목적은 야외지질답사 장소를 개발하고 과학적 모델의 사회적 구성을 야외지질학습에 적용하는 것이다. Orion(1993)의 가상의 공간(Novelty Space)과 2015 개정 교육과정 성취기준을 고려하고 답사 장소를 개발하였다. G 영재 교육원 과학과 8명 학생을 대상으로 '관악산 형성과정'이라는 것을 주제로 하여 총 5차시 분량의 과학적 모델의 사회적 구성을 활용한 야외지질학습을 실시하였다. 야외지질학습 전후로 1차시 분량의 설문 검사를 통해 학생들의 개념 이해 정도를 파악하고, 심층 면담에서는 개념 확인과 야외지질학습의 정의적인 면을 다루었다. 연구 결과는 다음과 같다. 첫 번째, 야외 답사 장소는 계곡 하류와 상류로 각각 명명하였고 변성암, 화강암, 절리, 포획암, 광물 입자를 관찰하도록 구성하였다. 두 번째, 사전 조사에서 관악산은 화산으로 만들어졌다고 응답한 학생이 7명이었다. 반면, 야외지질학습이 종료된 이후에는 7명 학생이 화강암의 형성과정을 설명하고 변성암을 예시로 지질시대를 이야기 하는 것으로 시간적인 스케일을 이해했음을 보여주었다. 더욱이 심층면담에서 지질학에 대한 낮은 성취를 보여주는 학생이 야외지질학습에 대해 긍정적인 답변을 주었다. 즉, 학습의 정의적인 면을 고려하였을 때 야외지질학습에 과학적 모델의 사회적 구성 활용이 효과적일 수 있다는 것을 보여준다. 이번 연구는 지질교육에 모델을 적용한 사례이고 동시에 교사에게 야외답사 장소를 제공할 수 있을 뿐만 아니라 야외지질학습에 과학적 모델의 사회적 구성을 적용한 사례로서 의의가 있다.