• Proceedings of the Korean Information Science Society Conference
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• 2012.06b
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• pp.16-17
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• 2012

국토해양부는 지방국토관리청의 도로공사와 관련하여 발생하는 공사비 정보의 교환 및 공유를 목적으로 작업분류체계 기반의 공사비 관리 항목을 추가하여 전자설계도서 작성 납품 지침을 개정하였다. 이를 반영하고 문제점 개선 및 활성화를 위하여 5개 지방국토관리청에서 관리중인 10개 도로건설공사를 시범적용 사업으로 지정하여 발생하는 공사비 정보를 디지털 수량산출정보로 관리하고 있다. 시범사업을 진행하면서 건설공사에 발생하는 설계변경 업무를 전자화하여 관리하는 기능을 개발하고 추가 적용하였다. 이를 통해 건설사에서 생성한 설계변경 정보를 건설사와 발주처가 동일한 형태로 공사비 정보를 공유 및 관리 가능하도록 하였다.

• Journal of Korean Society of Transportation
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• v.35 no.4
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• pp.278-291
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• 2017

Effective installation and operations of traffic safety signs in the advance warning area is of considerable interest for safer traffic management at freeway work zones. This study evaluated the feasibility of traffic safety sign installation based on a driving simulation experiment to take drivers' responsive characteristics into consideration. Both the compliance rate for speed limit and a lane-changing safety index were used for evaluating a set of driving simulation scenarios. It was identified that providing speed limit signs to reduce speed in advance and afterward guiding lane-changing could lead to safer maneuvering of vehicles entering work zones. The outcomes of this study are expected to be useful for revising freeway work zone management policies toward crash prevention.

• 월간 기계설비
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• s.310
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• pp.106-107
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• 2016

공정거래위원회의 불공정 하도급거래 제재 무게 중심이 대금 지연이자 수수료 미지급, 부당특약 설정 등에서 추가공사, 설계변경에 따른 대금 지급 여부로 확대되고 있다. 공사물량이 추가 변경됐는데도 수급사업자에 변경 계약서를 발급하지 않고 대금을 제대로 주지 않는 행위들이 여전히 제재 사각지대에 놓여 있다는 판단에서다.

• Korean Journal of Construction Engineering and Management
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• v.22 no.2
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• pp.63-71
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• 2021

This paper looks into how to enhance construction project management, focusing on the change order, which is often considered one of the major causes for construction delays, disputes, and claims in the middle east construction. First, this paper categorizes the major causes of change orders. It suggests a detailed classification standard for affecting factors resulting from change orders based on a case study result of an on-going construction project in the Middle East. In particular, this paper presents a method to apply a machine learning-based feature selection to quantify the importance of change order triggers and affecting factors. As a result, the case study identifies six major change order triggers and eight affecting factors. Also, a meaningful relationship between change order triggers and affecting factors by each category is presented. This paper will contribute to setting a clear guideline for change order management for the international plant construction field while helping prevent construction delays and cost run-ups by reducing the time required for change order resolution between project owners and contractors.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.301-304
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• 2006

The insistence of rights and interests in contract is being generalized by opening in construction market which is following F.T.A, internationally. Conditions of contract in construction have different specialities compared with other industries. Different conditions of contract should be established because of a specific character that is different from each construction, such as work, environment, circumference conditions. Although the order of Turn-key is being expanded by increasing construction scale and demanding hybrid function, the suitable regulations of contract are not settled. As a result, various factors of claim is occurring in Change Order-Claim, because they just obey a part of guide-line. This study suggests useful solutions in detail concerned with the main factor of Change Order-Claim by each D/B phases through practical sorting and analysis of the causes of Change Order-Claim.

• Korean Journal of Construction Engineering and Management
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• v.4 no.2 s.14
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• pp.74-81
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• 2003

In the construction industry, projects are becoming increasingly large and complex, involving multiple subcontractors. Traditional centralized coordination techniques used by the general contractors become less effective as subcontractors perform most wok and provide their own resources. When subcontractors cannot provide enough resources, they hinder their own performance as well as that of other subconractors and ultimately the entire project Thus, construction projects need a new distributed coordination approach wherein all of the concerned subcontractors can reschedule a project dynamically. To enable the distributed coordination framework of project schedule changes, the author developed an agent-based compensatory negotiation methodology, which allows intelligent software agents to simulate negotiations on behalf of their human subcontractors. In addition to this theoretical work, 1 designed and implemented a prototype to demonstrate the effectiveness of the framework. Thus, this research formalizes the necessary steps that would help construction project participants to increase the efficiency of their resource use, which in turn will enhance successful completions of whole projects.

• Journal of Korean Society of Transportation
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• v.26 no.1
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• pp.215-223
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• 2008

Due partly to lack of actual lane-changing data and partly to few studies on simulation functions to consider the lane-changing behavior, it may result in significant difference between simulation-based and real conditions. The objectives of this study are to estimate the set of mandatory lane-changing models and to analyze their features, depending on the merge control strategies under the lane-closed work zone operations. To achieve them, first, the elaborated calibration is required to simulate the mandatory lane-changing behaviors with the actual field data. Second, one can estimate their models with the logistic regression models, to obtain traffic variables as well as the lane-changing frequencies under the various levels of work zone traffic conditions. As a result, one can state that the well-calibrated simulation has the potential to properly reflect the target mandatory lane-changing behaviors. In addition, it should be mentioned that the set of proposed models is not practicable but preliminary result needed to identify the relations between the actual traffic conditions and lane-changing maneuvers and to develop their practical models for the actual applications.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.85-90
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• 2002

In the construction industry, projects are becoming increasingly large and complex, involving multiple subcontractors. Traditional centralized coordination techniques used by the general contractors become less effective as subcontractors perform most work and provide their own resources. When subcontractors cannot provide enough resources, they hinder their own performance as well as that of other subcontractors and ultimately the entire project. Thus, construction projects need a new distributed coordination approach wherein all of the concerned subcontractors can reschedule a project dynamically. To enable the new distributed coordination of project schedule changes, I developed a novel agent-based compensatory negotiation methodology, which allows software agents to simulate negotiations on behalf of their human subcontractors. This research formalizes the necessary steps that would help construction project participants to increase the efficiency of their resource use, which in turn will enhance successful completions of whole projects.

• 월간 기계설비
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• no.11 s.208
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• pp.29-40
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• 2007

국가계약법 시행령이 개정됨에 따라 재정경제부는 공사계약 일반조건, 입찰조건, 입찰유의서 등 회계예규를 개정하고 지난 10월 12일부터 시행에 들어갔다. 개정된 시행규칙은 공사계약일반조건에서 설계서와 물량내역서 등의 범위에 대한 정의규정 보완/손해보험 관련 손해공제 포함/설계변경 관련 조문정리/설계변경 계약금액조정 제한대상 추가 및 입찰금액조정 규정 마련/특정규격의 자재별 가격변동에 따른 계약금액조정 관련 등이 개정되었고, 공사입찰유의서에는 입찰에 관한 서류의 열람 및 교부/입찰무효사유 보완/낙찰자가 부적격자로 판명된 경우 낙찰자 결정 방법 개선/조문정리 등이 개선되었다.

• 월간 기계설비
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• no.8 s.217
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• pp.64-67
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• 2008

해외공사는 주로 해외지점망, 외국설계회사, 발주자 또는 기존 현장을 통해 입수한 공사정보(공사비 및 공사개요, 재원, 발주자, 설계회사, 입찰일정 등)를 토대로 입찰참여 여부를 결정하며, 입찰 자격심사(PQ : Pre-qualification)를 거쳐, 입찰서를 발급받아 견적서를 작성하고 입찰에 임하게 된다. 입찰, 수주활동을 하는 동안 주요사항을 국토해양부 및 해외건설협회에 단계별로 소정의 양식에 의거 보고한다. 주요보고사항 $\Delta$ 수주활동상황보고(입찰예정일 10일 전까지) $\Delta$ 계약체결결과보고(계약체결 15일 이내) $\Delta$ 시공상황보고(매분기 종료후 30일 이내) $\Delta$ 공사내용변경보고(변경 15일 이내) $\Delta$ 준공보고(준공증명서 발급 15일 이내)