건물 자동화 시공 시스템 개발 방향에 관한 연구

이웅균,강경인,Lee, Ung-Kyun,Kang, Kyung-In 한국건축시공학회 2007 한국건축시공학회지 Vol.7 No.3

Increasing wages and decreasing skilled labors are problems awaiting solution. The development of automatic technologies contributes to accelerating the one of construction automation. Thus, this study is to suggest the way to develop the automated building construction system base on one performed in Japan in order to solve urgent problems of construction industry in Korea. Therefore interviews and questionnaires were performed based on experts who work for the automated building construction system field and analyzed through analytic hierarchy process. In doing so, it was the most important factor to develop a branch of automatic, mechanical or machine technologies for the automated building construction system. Especially the study indicated the importance of the technologies to substitute skilled labors such as a robot. This research could contribute to developing the automated building construction which is very unique and suitable for construction industry in Korea.

콘크리트 공공 사인 블록 개발에 대한 연구

이웅균,이성철,김종윤,김백중,Lee, Ung-Kyun,Lee, Sung-Chul,Kim, Jong Yoon,Kim, Baek-Joong 한국재난정보학회 2021 한국재난정보학회 논문집 Vol.17 No.2

연구목적: 본 연구는 보행자의 안전 및 다양한 정보를 제공할 수 있는 바닥용 콘크리트 공공 사인 블록의 개발을 목적으로 한다. 연구방법: 이러한 연구목적을 달성하기 위하여 위하여 공공 사인 블록 개발과 관련하여 적용한 단계별 블록 제작 기술을 제시하고, 개발된 콘크리트 공공 사인 블록의 현장적용성을 평가하였다. 연구결과: 본 연구에서 개발된 바닥용 콘크리트 공공 사인 블록은 다양한 형상의 공공 사인의 표현이 가능하고, 제조 단가를 절감할 수 있을 것으로 보인다. 2년간의 사용성 평가결과 균열, 모서리 탈락, 변색, 마모 등의 문제는 발견되지 않아 충분한 내구성을 확보한 것으로 판단된다. 결론: 이러한 연구 결과를 토대로 콘크리트 공공 사인 블록이 기존의 바닥용 공공 사인에 활용되어 오던 스티커, 석재 및 황동판 등의 취약점을 보안할 수 있는 대안으로 활용될 것으로 보이며, 향 후 블록 디자인의 다양화를 도모하여 여러 분야에 적용될 수 있기를 기대한다. Purpose: The purpose of this study is to develop a concrete public sign block for floors that can provide pedestrian safety and various information. Method: In order to achieve these research objectives, step-by-step block manufacturing techniques applied in relation to the development of public sign blocks were proposed, and the field applicability of the developed concrete public sign blocks was evaluated. Result: The concrete public sign block for floors developed in this study is expected to be capable of expressing public signs of various shapes and to reduce manufacturing cost. As a result of the usability evaluation for two years, no problems such as cracks, edge dropouts, discoloration, and abrasion were found, so it is judged that sufficient durability was secured. Conclusion: Based on these research results, it is expected that the concrete public sign block will be used as an alternative to secure the weaknesses such as stickers, stone and brass plates that have been used in the existing public sign for floors. It is expected that it can be applied in various fields.

효율적인 건설자동화 기술 개발을 위한 핵심성공요인

이웅균,김백중,김태훈 대한건축학회지회연합회 2019 대한건축학회연합논문집 Vol.21 No.6

Construction automation can be an effective alternative for the lack of skilled labor and loss of productivity. With such a background, Korean government has provided a lot of financial supports for the development of construction automation technology. However, despite of those efforts, automation systems at construction sites have rarely been employed. This is because the systems have not been developed with full consideration of the needs and environments on construction sites. Thus, the purpose of this study is to identify the critical success factors for efficient development of construction automation systems. This study compares and analyzes key factors for automated construction system(ACS) and construction information system(CIS). As a result, ‘stability and reliability’ in the ACS showed the highest importance while ‘manageability’ in the CIS was. Consequently, for the successful introduction of the ACS, technical capability and stability should be firstly considered to cope with dynamic construction environment, while the CIS should be built to enable efficient management and use of information. The result of this study can serve as an evaluation base for the current construction automation technologies and an index for more efficient technology development in the future as well.

사례분석을 통한 건설사업관리 대가산정 방법 개선

이웅균,유위성,김동인,김태훈,차민수,조훈희,Lee, Ung-Kyun,Yoo, Wi-Sung,Kim, Dong-In,Kim, Tae-Hoon,Cha, Min-Soo,Cho, Hun-Hee 한국건설관리학회 2012 한국건설관리학회 논문집 Vol.13 No.4

본 연구는 국내 외 건설사업관리 유사 건설기술용역 대가 기준 및 사례분석을 토대로 합리적인 건설사업관리 대가기준을 제안하는 것을 목적으로 한다. 이를 위해 기존의 건설사업관리 대가의 적정성을 분석하고, 사례분석을 통한 인력투입 실태를 조사하였으며, 비상주 인력의 적정수준에 대해 고찰하였다. 사례분석결과, 현행 건설사업관리 대가산정 체계는 책임감리와의 대가산정 방식의 이원화, 비 현실적인 대가기준 및 인력배치 등이 문제점으로 도출되었다. 이를 위한 개선 방안으로 건설용역 대가산정 방식의 정비, 건설사업관리 대가수준의 현실화, 사업초기단계 배치인력의 탄력성 확보, 사업특성을 고려한 비상주 인력 활용을 제안하였다. 본 연구는 향후 건설사업관리의 대가수준의 현실화 및 대가산정을 위한 접근방법의 개선에 기여하여 건설사업관리 업무의 효율성 향상에 도움이 될 것으로 기대된다. The objective of this paper is to suggest the improvement of estimating system for construction management (CM) service fee through the analysis of the previous literatures and criteria and case study. In order to do this, this paper considered the relevance of existing criteria to estimate the CM service fee, the condition of input ratio of engineering resources in the real cases, and current utilization strategy of nonresident technical engineers. Based on the analysis, the following problems were identified; a) the different estimating system for CM fee and construction supervision fee, b) impractical estimating system for the CM fee, and c) inappropriate allocation of human resources for CM. Consequently, this paper suggested the following 4 items for the improvement of the existing system; (1) modification of the current structure of CM fee calculation, (2) rationalization of current level of the CM fee which is required to be raised approximately 5.4 percent compared to design or supervision fee, (3) securement of elasticity of the input ratio of engineering resources from the inception phase, and (4) development of the utilization strategy of nonresident engineers based on the technical requirement of the jobsite. Thus, it is anticipated that this research would affect the compensation package of CM in order to make the estimation process of CM service fee more efficient and to revitalize CM as business.

AHP를 이용한 공공공사 입찰 방식 의사결정지원 모델

이웅균 한국건축시공학회 2017 한국건축시공학회지 Vol.17 No.6

The bidding method of public works is decided based on the experience of the officials in charge and the convenienceof the work, but the validity of decision making process for the bidding method has not been verified. Another challengein the bidding method selection is its objective validation is not easy because the decision making is based on experience,when a new type of project is ordered or a new bidding method is applied In this study, therefore, a decision makingmodel to facilitate the selection of a public construction project delivery method was developed and examined with itsapplicability. This model was developed using the Analytic Hierarchy Process and was verified through 32 persons whowere actually in charge of the works. As a result of applying this model, 5 of the 32 persons showed consistency in usingthe model. and they expressed positive opinions about the model. The model can provide a guide while recognizing the factthat they cannot depend entirely on the model. Therefore, the model proposed in this study is expected to reduce thework-related burden of the persons who are involved in the related work and help the objective performance of their taskswhen a new bidding method or project appears in the future. 공공공사의 입찰 방식 결정은 공무수행담당자의 경험 및업무의 편의성 등을 고려하여 결정되고 있는데, 입찰을 위한방식 결정 과정의 타당성 검증은 이루어지지 못하고 있는실정이다. 입찰방식의 선정에 있어 또다른 도전과제는 경험위주의 의사결정을 근간으로 하고 있어 새로운 형태의 프로젝트 발주 또는 새로운 형태의 입찰방식 적용 시 그것에 대한객관적 타당성을 마련할 방법이 쉽지 않다는 점이 있다. 따라서 본 연구는 공공공사 프로젝트 발주 방식 선정에 도움을줄 수 있는 의사결정모델을 개발하고 이의 활용성을 검토하고자 한다. 본 연구는 계층분석적의사결정기법을 이용하여모델을 개발하였고 실제 업무 수행 담당자 32명을 통해 검증하였다. 모델 활용결과 32명 중 5명의 모델활용에 일관성이있었으며, 담당자들은 모델에 전적으로 의존할 수 없다는사실을 인지하면서도 가이드를 제시해줄 수 있다는 점에서긍정적 의견을 제시하였다. 이를 통해 본 연구에서 제시한모델이 향후 새로운 형태의 입찰방식 또는 과제 발생 시 관련업무 수행자의 업무관련 부담을 줄여주고 객관적인 공무수행에 도움을 줄 수 있을 것으로 기대된다.

공동주택 마감공사의 하자보수기간 현황 및 연관성 연구

이웅균,서덕석,Lee, Ung-Kyun,Seo, Deok-Seok 한국건축시공학회 2017 한국건축시공학회지 Vol.17 No.4

The warranty liability period for defects in apartment buildings by work type is not based on scientific analysis, making the appropriateness of the term a culprit behind the lawsuits. Therefore, this research aims to evaluate the appropriateness of the warranty liability term of apartment buildings by identifying the current status of defects, in particular, caused by finishing works. That is because the number of defects, caused during the finishing works, accounted for the largest portion of the total defect cases of apartment buildings reported to the Apartment Defect Dispute Mediation Committee under the Ministry of Land, Infrastructure, and Transport of Korea between 2010 and 2011. The result from analyzing claims for defect repairs of the finishing works showed that most cases by work type continued to be made after two years, and only about 60% were charged within the warranty period. And, defects by work type have correlation, which needs to be considered for a better construction technique. Considering a low correlation between the possibility of defects and the construction performance rankings, which are highly relevant to the apartment preference. It is believed that there needs to be a qualification process for agencies that actually performs finishing works. 공동주택의 공종별 책임 하자 보증기간은 과학적인 분석에 근거를 두지 않고 있어. 기간의 적절성이 분쟁의 원인이 되고 있다. 이에 따라 본 연구에서는 2010~2011기준 국토교통부 하자심사 분쟁조정위원회에 접수된 하자제기건수 중 공동주택 하자 중 가장 많이 제기된 마감공사의 하자실태를 파악하여 하자보수기간의 적절성을 평가하고자 하였다. 마감공사의 하자청구건수를 분석한 결과 대부분의 공종별 하자는 2년 이후에도 나타나고 있으며, 60% 정도만이 하자담보책임기간 내에 청구되고 있는 실정이다. 공종별 하자는 상호간에 연관성을 가지고 있으며 이러한 점은 시공의 관리 차원에서 고려되어 공법의 개선이 필요한 것으로 나타났다. 공동주택의 선호도에 큰 영향을 끼치는 시공능력평가 순위와 하자발생의 상관성이 낮은 것으로 보아 실제 수행하는 전문업체의 하자관련 검증 절차가 필요한 것으로 판단된다.

Assessment of Requirements for Successful Mobile Project Management Information Systems

이웅균,Hyung Seok “David” Jeong,Asregedew Woldesenbet 한국건축시공학회 2014 한국건축시공학회지 Vol.14 No.1

The objective of this study is to assess the requirements of tablet PC-based PMIS applications designed for use onconstruction sites to determine whether these new programs can play a significant role in increasing the efficiency ofa project. In this research, the current market conditions of PMIS running on a tablet PC were analyzed. In addition,two industry surveys were conducted. A research team interviewed some industry experts and identified fourteenuseful and desirable functions that can be incorporated into tablet PC-based applications and project management tools. Through a questionnaire survey, the most effective functions for the tablet PC-based PMIS were identified. The threetop-rated functions among those suggested were Contact Information for Job-Related Personnel; Receive and Respondto Submittals, RFIs, and Notices; and Problem Solving for Design and Engineering Issues. The results of this researchare expected to provide helpful information for mobile application developers and members of other interested groupsin the construction industry.

Performance assessment model for robot‐based automated construction systems

이웅균,유위성,안성훈,도낙주,조훈희,전창현,김태훈,이영훈 한국건축시공학회 2013 한국건축시공학회지 Vol.13 No.4

An adjusted assessment model based on benefit–cost analysis (BCA) is proposed for evaluating the economic efficiency of automated construction technologies. In contrast to conventional BCA, the model does not compare monetary values, but the differences in benefits and costs between traditional and automated construction methods. To verify the usefulness of the model, it was applied to a real-scale building construction project that used a fully automated building construction system, and the face validity of the model was confirmed. The results indicate that the model can support decision makers in identifying valuable benefit factors and in assessing the cost effectiveness of the system.

국내 모듈러 건축 프로젝트의 단계별 BIM 활용업무 분석

이웅균,이명도 대한건축학회지회연합회 2019 대한건축학회연합논문집 Vol.21 No.5

Building Information Modeling (BIM) and modular construction are regarded as important technologies that could contribute to overcoming the crisis faced by the construction industry. However, BIM uptake in current modular construction projects is limited. Moreover, there are no specific guidelines to support decision-making regarding the application of BIM in modular construction projects. Therefore, this study aims to analyze the possibility for BIM uptake in each phase of modular construction projects in Korea. Initially, the literature detailing on BIM uptake cases in modular construction projects was reviewed. The detailed work and activities for each phase of a modular project were analyzed via a questionnaire targeting domestic modular experts, to derive items requiring improvement due to errors or changes occurring in the actual project. Ten realistic BIM uptake items were derived, reflecting the results of literature review and expert interviews. Then, the BIM uptake items in each phase were analyzed in terms of necessity and efficiency via a second questionnaire using five-point Likert scales. Finally, the BIM utilization index (BIM UI) of the BIM uptake items was suggested as a priority measure. As a result, the BIM UI of “3D coordination” (U2), “design authoring and reviews for off-site fabrication” (U3), and “detailed 3D modeling for off-site fabrication” (U4), were assigned the highest priority. The results of this study can be used as guidelines to support decision-making regarding the application of BIM in modular construction projects.

중요도-성취도 분석을 통한 건축 신제품의 요구사항 분석 연구

이웅균,김재엽 한국건축시공학회 2023 한국건축시공학회지 Vol.23 No.3

With an increasing interest in the commercialization of research results in the present societal climate,especially in the construction industry, preliminary product analysis plays a critical role whenintroducing a new product to the market. It significantly influences the product's success or failure. Inthis context, this study aims to investigate the utility of Importance-Performance Analysis (IPA) as amanagement strategy tool for preliminary analysis in the commercialization of new architecturaltechnologies. The study specifically assesses a smart ball product engineered for pipeline inspection. The evaluation is carried out based on product quality, convenience, and usability categories. Seventeen factors are recognized as sub-items, and a survey is conducted among relevant experts andconsumer groups. From the survey, four key items are chosen: “Keep up the good work,” “Concentratehere,” “Low priority,” and “Possible overkill.” Suitable strategic measures are derived for each item. Byconducting a correlation analysis between product importance and performance, this study offers amethod to establish priority directions for future development. This analysis assists in identifyingareas that necessitate improvement or additional focus to increase the product's commercial potential. On the whole, this study contributes to understanding and applying Importance-Performance Analysisas a valuable tool in the preliminary analysis and commercialization of novel technologies in the fieldof architecture. 최근의 사회적 분위기에 따라 연구 결과의 사업화에 대한 관심이 증가하고 있다. 건축 시공 분야 역시 신기술에 대한 제품화가 활발히 이루어지고 있는 실정이다. 제품에 대한 사전 분석은 향후 신제품의 시장 진출시 성패를 좌우할 수 있는 중요한절차 중 하나이다. 따라서 본 연구는 건축 분야에서 개발된 신기술의 제품화를 위한 사전 분석 방법 중의 하나로 경영전략도구로 활용되고 있는 중요도-성취도 분석을 실시하고 이의 적용 가능성을 모색하고자 한다. 본 연구에서는 기 개발된 파이프라인 검사용 스마트볼 제품을 평가하며, 이를 위하여 제품의 품질, 편리성, 활용가능성의 범주를 설정하였다. 하위 항목으로17개의 요인을 설정하여 관련 전문가 및 소비 집단을 대상으로 설문조사를 실시하였다. 그 결과 좋은 작업상태 지속 유지 항목, 노력 집중화의 지향 항목, 우선 순위 낮음 항목, 과잉 낭비 가능성 항목을 선정하였으며 각각 항목에 적절한 전략적 방안을 도출하였다. 본 연구는 제품의 중요도 및 성취도 측면에서 상호관계 분석을 실시함으로써 향후 개발을 위한 우선 방향을도출할 수 있는 방안을 제공하였다.