• 국제학술발표논문집
• /
• The 2th International Conference on Construction Engineering and Project Management
• /
• pp.50-60
• /
• 2007

The endeavor of this paper focuses on designing a monitoring system to provide a cost-effective solution on quality assurance for construction projects. The construction site monitoring system integrates a long-range wireless network, network cameras, and a web-based collaborative platform. The users of the system could obtain the most updated status of construction sites, such as behaviors of workers, project progress, and site events anywhere with Internet connectivity. It was carefully configured in order to maintain the reliability under the reactive conditions of the construction sites. This paper reports the architecture of the monitoring system and reviews the related technologies. The system has been implemented and tested on a construction site and promising results were obtained.

• Structural Engineering and Mechanics
• /
• 제50권5호
• /
• pp.679-695
• /
• 2014

A design method of second generation wavelet (SGW)-based multivariable finite elements is proposed for static and vibration beam analysis. An important property of SGWs is that they can be custom designed by selecting appropriate lifting coefficients depending on the application. The SGW-based multivariable finite element equations of static and vibration analysis of beam problems with two and three kinds of variables are derived based on the generalized variational principles. Compared to classical finite element method (FEM), the second generation wavelet-based multivariable finite element method (SGW-MFEM) combines the advantages of high approximation performance of the SGW method and independent solution of field functions of the MFEM. A multiscale algorithm for SGW-MFEM is presented to solve structural engineering problems. Numerical examples demonstrate the proposed method is a flexible and accurate method in static and vibration beam analysis.

• Journal of Construction Engineering and Project Management
• /
• 제4권1호
• /
• pp.45-50
• /
• 2014

Productivity analysis is the most important and significant method for evaluating management and engineering performance during whole project stage. However, it is very difficult in developing qualitative index to construction industry comparing to other industries. Therefore, analytical hierarchy process (AHP) is one of the methods for overcoming these limitations by checking consistency index using duality comparison. In this study, it is scraped up an application plan and selection for innovative tools by analyzing survey results on tool users and site managers with respect to using Modified-AHP performance measurement method.

• 국제학술발표논문집
• /
• The 3th International Conference on Construction Engineering and Project Management
• /
• pp.464-471
• /
• 2009

Robot and application of IT skill of construction industry are slow comparatively than another thing industry by the feature. This research proposes progress management and real time information gathering through construction automation and RFID focused on steel structure construction. Building for RTPM system, must consider various variables and surrounding situation in construction field and it is the most important and difficult matter that draw right requirement and grasp relation between this requirements to accomplish one suitable task considering these environment. Therefore, in this study analyzes requirement and target for RTPM system based on scenario that is easy to draw requirement and apply this to use case model. Presented method suggests that represent relation between goals and way that refines goal systematically from requirement of RTPM system. And it could express for visualization through the Way that attaches nonfunctional elements of system with system internal goal.

• 한국건설관리학회:학술대회논문집
• /
• 한국건설관리학회 2002년도 학술대회지
• /
• pp.359-362
• /
• 2002

건설업에서 물량 산출 자동화에 대한 연구는 많이 이루어졌다. 기존 수작업으로 물량값을 산출하는 것 보다 CAD 도면의 활용으로 좀더 신속하고 정확한 물량값을 산출하였다. CAD의 활용으로 물량 산출 자동화에 대한 연구와 견적 프로그램의 발전에 많은 영향을 주었다. 일반적으로 골조 공사에서 물량 산출은 견적프로그램을 이용 물량 산출 작업이 이루어진다. 그러나 골조 공사의 물량 산출 작업에서 각 부재별 경계조건(boundary condition)에 대한 물량 산출 방법론의 정립은 부족한 실정이다. 본 논문에서 골조 공사 물량 산출에서 콘크리트, 거푸집 각 부재별 물량 산출 방법을 정립하고자 한다. 각각의 부재별 경계조건(boundary condition)에서 각 부재별 조건에 맞는 물량 산출 방법론을 정립한다.

• 대한토목학회논문집
• /
• 제32권3D호
• /
• pp.269-274
• /
• 2012

건설 산업에 대한 자동화 시스템 구축에 대한 연구는 오래전부터 지속되어왔다. 그러나 개발된 자동화 시스템에 대한 성능평가 방안은 아직까지 명확하게 제시된 사례가 존재하지 않는다. 대부분의 연구에서는 이러한 성능평가를 부분적인 요소기술에 대하여 수행하거나, 도입을 통하여 얻는 편익에 집중하여 성능평가가 수행되었다. 본 연구에서는 경제적 타당성과 편익을 동시에 고려할 수 있는 지능형 굴삭 시스템에 대한 성능평가 프레임워크를 구축하였다. 이를 이용하여 자동화 장비에 대한 성능평가 방안을 제시하였으며, 지능형 굴삭 시스템의 현장 적용성을 분석하였다.

• 한국측량학회지
• /
• 제40권3호
• /
• pp.169-175
• /
• 2022

우리나라 건설 산업은 건설 인력의 부족 및 노령화, 타 산업분야에 비해 낮은 생산성, 높은 산업재해율 등이 있다. 국토교통부에서는 4차 산업혁명을 대비하고, 건설산업의 생산성 향상을 위해 건설자동화, 혁신성장동력을 정하고 이에 대한 투자를 확대하고 있다. 도로건설 분야에서 새로운 기술들이 활용되기 위해서는 기술에 대한 정확도 검증과 공종별 적용성에 대한 평가가 이루어져야 한다. 본 연구에서는 관련 작업규정을 기준으로 모바일맵핑시스템의 정확도를 검증하고, 도로 시공현장에 대한 데이터 취득 및 분석을 통해 도로 시공측량에 대한 모바일맵핑시스템의 적용성을 제시하고자 하였다. 정밀도로지도 제작 작업규정에 따라 연구에 활용한 장비의 정확도를 검증하였으며, 수평 및 수직 방향에 대한 최대 오차가 10cm 이내로 연구에 활용한 모바일맵핑시스템의 도로 시공측량 적용 가능성을 제시하였다. 또한 시공측량을 위한 데이터 취득 시간에 대한 기존 방법과의 비교와 시공측량 성과물 제작과 heatmap 및 토공량 산정을 통해 모바일맵핑시스템을 이용한 도로 시공측량 활용의 가능성을 제시하였다. 향후, 모바일맵핑시스템의 도로 시공측량 활용은 건설공사의 효율성을 크게 향상시킬 수 있을 것이다.

• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2011년도 추계 학술논문 발표대회
• /
• pp.133-134
• /
• 2011

While researches related with construction automation have dramatically increased, a Robot-based Automatic Construction system (RCA system) has developed for high-rise buildings in Korea. At the aspect that wide adoption of the RCA system is dependent on economic efficiency comparing with a conventional method, feasibility study on the RCA system should be implemented. However, due to practical limitations, the RCA system has tested to a seven story building. Based on the test results, this study implements a cost/benefits analysis to a simulated forty story building in order to derive more reliable data on the RCA system's practicability.

• 대한건축학회논문집:구조계
• /
• 제34권4호
• /
• pp.75-82
• /
• 2018

BIM(Building Information Modeling) based design process can initiatively conduct a task through all phases from early design step to construction and maintenance step. Also BIM efficiently manage the building's energy by reflecting 3D design and construction life cycle. This paper proposes an efficient process to build AHU's BIM-based library. This study involves analyzing an AHU model for development of design module, and making the template model using the same 12 parts including the shapes of ducts, doors and frames. In consideration of each shape's direction and the status of existence, which are detailed shapes of parts upon making the template model, all the shapes of the AHU model can be expressed. By applying parametric modeling to the template model, a quick and precise modification and transformation can be conducted, thus the efficiency is enhanced. A user selects an AHU model from a 2D model selection program, and extracts shape information. The final AHU shape is completed through the automation work of unnecessary shape deletion by bringing the extracted shape information to the template model. This enables the user to build efficient AHU's BIM-based library, since the quick and precise modification and transformation of the template model are possibile, and all AHU model shapes can be expressed.

• 한국전산구조공학회:학술대회논문집
• /
• 한국전산구조공학회 2007년도 정기 학술대회 논문집
• /
• pp.170-175
• /
• 2007

Recently, construction industry in Korea is considering of various approaches for improving productivity and thus enhancing the competitive capacity in the global market. To this end, Korean Ministry of Construction & Transportation has launched R&D project in the field of automation, information systems, high value-added techniques. Furthermore, a new era of cities such as U-city and Eco-city is coming due to the government strategy for developing the country. In the regards of methodological development and trends of construction projects stated above, conventional methods for managing the projects is not likely to guarantee the success. Especially, in the planning and maintenance phases of such large scale cities, a new paradigm should be introduced. We thought of it as 3D object based simulation system for city planning. This paper describes the concept of the system.