• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.685-691
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• 2009

Recently, public office building projects are being recognized by many construction engineers and researchers, as the critical projects in the construction industry. The project budgets have sometimes exceeded due to the lack of core knowledge, experiences, skills and experts concerned in cost planning and estimating in the pre-construction stage. It has been highlighted that planning and estimating effectively the cost of public office building projects as critical in the design stage. Within this context, some cost data books and systems, such as RSMeans cost data systems and Spon's price book, have been systematically developed and used by many construction cost managers and organizations in order to effectively estimate and use their project budgets. As a result of this research, a cost estimating model for finishes has been developed, considering the cost data used in public office building projects.

• 한국건설관리학회논문집
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• 제3권1호
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• pp.65-73
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• 2002

건설산업의 특성상 엔지니어링 등 소프트웨어 부문은 지식이 곧 기업의 경쟁력을 좌우하기 때문에 철저한 보안 강화로 지식의 소재조차 불분명한 상황이며, 건설현장의 지식은 프로젝트의 종료와 함께 사장되어 가는 현실에 직면해 있다. 이 연구의 목적은 지식경영을 추진하고 있는 기존 업체의 지식관리 학습모델을 고찰하여 이를 근간으로 새로운 모델을 개발하고 건설업체에 적용하는 시나리오를 설정하는 것이다 이를 토대로 사장되어 가는 건설현장 지식을 유통시켜, 건설산업의 전반적인 수준 향상을 도모하고자 한다. 이에 지식관리와 관련한 선행 연구를 분석하여, EIP, EDMS, 지식 및 실패사례관리, CoP, e-Learning으로 구성되는 건설분야의 지식관리 학습모델을 개발하였다.

• 직업교육연구
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• 제33권3호
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• pp.37-56
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• 2014

이 연구의 목적은 D사(社) 건설사업관리자의 역량 모형을 개발하고, 역량 개발의 요구를 분석하는 것이다. 이를 위해 D사(社)의 우수 건설사업관리자 25명을 대상으로 델파이 방법을 활용하여 역량 모형(안)을 개발하였다. 연구 결과, D사(社) 건설사업관리자 역량 모형은 3개 역량군, 11개 역량, 60개 행동 지표로 구성되었다. 그리고 D사(社) 건설사업관리자 114명을 대상으로 설문조사를 실시하여 우수 집단과 평균 집단의 역량 수준을 비교 분석하는 동시적 구성 타당화를 통해 역량 모형을 검증하였다. 또한 각 역량의 필요 수준과 현재 수준을 조사 분석하여 역량 개발의 우선순위를 도출한 결과, 커뮤니케이션, 리스크 관리, 목표 의식, 고객 지향, 프로젝트 관리 역량에 대한 개발 요구도가 높은 것을 확인하였다. 이상의 연구 결과를 바탕으로 건설사업관리자의 역량 기반 인적자원개발에 관한 몇 가지 시사점을 제시하였다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2009년도 세계 도시지반공학 심포지엄
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• pp.956-962
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• 2009

A high embankment is generally constructed by dividing into several sub-embankments. Unlike any soil embankment, a rock embankment is constructed by means of dynamic compaction. Such a sub-embankment and dynamic compaction may induce an increase of pressure at the lower part of embankment and cause a different behavior of ground from initial status. In this study, settlement of a high rock embankment is estimated using a hyperbolic model taking into construction history. The results from prediction are compared with those obtained from field measurements and large plate loading tests.

• 국제학술발표논문집
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• The 5th International Conference on Construction Engineering and Project Management
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• pp.433-436
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• 2013

This study suggests IFC-based bridge information modeling methods and its application model in BIM environment. Data model extension for bridge structure was achieved using user-defined property sets based on IFC framework. First, identification information was added. Bridge members are identified through physical and spatial semantic information added as property sets. Instances for semantic information were assigned according to standardized rules. Second, CO2 related factors were added for application information model. It can play a role to calculate and manage the quantity of CO2 emission. Third, properties for temporary structure to estimate and manage the construction cost were added. Finally, we investigated proposed methods through implementing the application information model of bridges.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2010년도 추계 학술발표회
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• pp.782-789
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• 2010

Landslides cause enormous economic losses and casualties. Korea has mountainous regions and heavy slopes in most parts of the land and has consistently built new roads and large-scale housing complexes according to its industrial and urban growth. As a result, the damage from landslides becomes greater every year. In this study, performed a GIS-based landslide hazard analysis by SINMAP(Stability Index MAPping) model in Gyeonggi Icheon area coupling with geomorphological and geological data. SINMAP model has its theoretical basis in the infinite plane slope stability model with wetness obtained from a topographically based steady state model of hydrology. To Gyeonggi Icheon area landslides hazards evaluated, these SINMAP model were analysed results while simultaneously referring to the stability index map, where lines distinguish the zones categorized into the different stability classes and a table giving summary statistics.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2010년도 추계 학술발표회
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• pp.979-990
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• 2010

Although a centrifuge model test is performed with scaled models, it has a lot of advantages compared with usual scale model tests, for the reproduction of stress levels equal to a full scale test is possible. At the beginning of the Daewoo Institute of Construction Technology, a servo-motor-driven single axis actuator was introduced and has been in use with a geo-centrifuge. However, for variety of experiments and construction stage simulation, various apparatuses have been developed, such as a vacuum generator, a lateral actuator for tidal power simulation, a gravel hopper and a sand drainer for filled-up ground, and a water level controller. The apparatuses have been manufactured with enough strength and durability to be operated under specific g levels. This paper presents the properties of the apparatuses and the results of the tests performed with those.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1242-1247
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• 2009

The sudden changes in the construction market and the progressively intensifying price wars have amplified the importance of the construction cost estimation in the initial and planning phases of construction projects. However the methodologies and process of estimating construction cost in the planning and design phase are not standardized in the domestic market, in contrast to the markets of more developed countries. Therefore this paper proposes a new approximate estimation model to be used from the initial stages of construction projects. This methodology that extracts, modifies and synthesizes comparable elements of previous cases. This will introduce the foundation for the implementation of systems with improved usability and applicability.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.676-684
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• 2009

Decision making at the early stages of a construction project has a significant impact on the project, and various scenarios created based on the owner's requirements should be considered for the decision making. At the early stages of a construction project, the information regarding the project is usually limited and uncertain. As such, it is difficult to plan and manage the project (especially cost planning). Thus, in this study, a cost model that could be varied according to the owner's requirements was developed. The cost model that was developed in this study is based on the case-based reasoning (CBR) methodology. The model suggests cost estimation with the most similar historical case as a basis for the estimation. In this study, the optimization process was also conducted, using genetic algorithms that reflect the changes in the number of project characteristics and in the database in the model according to the owner's decision making. Two optimization parameters were established: (1) the minimum criteria for scoring attribute similarity (MCAS); and (2) the range of attribute weights (RAW). The cost model proposed in this study can help building owners and managers estimate the project budget at the business planning stage.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2012년도 추계 학술논문 발표대회
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• pp.113-114
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• 2012

With increasing awareness on sustainable construction and green buildings, environment-friendly construction activities have been introduced and promoted. Green value engineering (VE) is an effort that is recently introduced to facilitate environment-friendly construction. To support the application of green VE in construction, this paper suggests a green value assessment model considering the environmental performance and carbon emissions during construction. The value assessment model presented in this study is expected to help conduct objective value evaluation of construction activities in terms of both cost and environmental performance.