• 한국건설관리학회논문집
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• 제14권6호
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• pp.14-21
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• 2013

완성된 도면과 시방서를 기초로 산출한 상세한 물량 정보를 토대로 상세 공사비를 예측하는 업무에 비해 도면과 시방서가 완성되기 이전 단계에서 시설제원이나 개략적인 설계 정보 등을 기초로 개략공사비를 예측하는 업무는 공사비 예측 업무 담당자의 주관적인 판단에 의존하는 경향이 크고 객관성이 낮은 실정이다. 본 연구에서는 도로건설공사 초기단계에서의 사업비 예측 모델을 연구하고 이를 토대로 건설공사 개략공사비 예측 시스템을 개발하였다. 이 시스템은 BIM 및 GIS를 이용하여 사업 초기단계 개략적인 노선선정에 따른 개략공사비 추정에 있어 사례기반추론을 기반으로 사업비 예측의 정확성 향상과 업무 선진화에 기여할 것으로 기대된다. 또한 사용자가 인터넷을 통해 편리하게 접근할 수 있고 객관적이면서 일관성 있는 개략공사비 예측 결과를 제공받을 수 있으므로 업무 투명성 측면의 효과도 기대할 수 있을 것이다.

• 한국공간구조학회논문집
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• 제13권4호
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• pp.67-74
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• 2013

The Age-adjusted effective Modulus Method(AEMM) is one of the methods adopted for the construction stage analysis of concrete structures. The AEMM uses the aging factor to consider the effects of the varying concrete stress. In the aspects of computation time and the accuracy of the results, the AEMM is considered as one of most appropriate methods for construction stage analysis of tall building structures. Previous researches proposed appropriate values of the aging factor in the forms of graphs or using very simple equations. In this paper, an equation for estimating the aging factor as a function of rebar ratio in the section, compressive strength of concrete, notional member dimension, and age of concrete at the load application. The validity of aging factor proposed in this paper were examined by the comparison with the results of step-by step method.

• Geomechanics and Engineering
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• 제15권5호
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• pp.1039-1046
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• 2018

This paper presents a limit analysis of the series of construction stages of shallow tunneling method by investigating their respective safety factors and failure mechanisms. A case study for one particular cross-section of Beijing Subway Line 7 is undertaken, with a focus on the effects of multiple soil layers and construction sequencing of dual tunnels. Results show that using the step-excavation technique can render a higher safety factor for the excavation of a tunnel compared to the entire cross-section being excavated all at once. The failure mechanisms for each different construction stage are discussed and corresponding key locations are suggested to monitor the safety during tunneling. Simultaneous excavation of dual tunnels in the same cross-section should be expressly avoided considering their potential negative interactions. The normal and shear forces as well as bending moment of the primary lining and locking anchor pipe are found to reach their maximum value at Stage 6, before closure of the primary lining. Designing these struts should consider the effects of different construction stages of shallow tunneling method.

• 한국안전학회지
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• 제23권4호
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• pp.72-78
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• 2008

In any form of construction work, it is essential that accidents be prevented at every stage from foundation preparation to build completion. For this, it is necessary to use models that can assess risk and provide instruction for safe work processes so that the risk of accidents is reduced. Currently, however, very few models can perform these tasks. In this paper, we presents a model that assesses risk quantitatively by analyzing risk factors involved in stage of construction such as foundation work, erection work, structural work, equipment work, finishing work and etc work. The model performs assessment based on examples of accidents and by investing actual conditions during construction. In addition, we presents in this paper a safety management system was developed to assess risk during construction and to effectively train laborers.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2005년도 춘계 학술발표회 논문집
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• pp.583-588
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• 2005

In this study, a concrete faced rockfill dam constructed by stages was numerically analyzed, and the numerical results were compared with in situ measurements. The simple incremental elastic and isotropic hyperbolic model was employed to characterize the nonlinear deformation behavior of rockfill material and computational procedure followed construction sequence. A series of large triaxial tests for rockfill material were carried out to obtain mechanical input parameters. According to the analysis results, relative great additional deformation was introduced at the surface of stage-I dam body due to the loading by stage-II construction. The results reveal that numerical analysis can effectively simulate the construction processes, and some meaningful insights about the behavior of CFRD during construction were gained.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 춘계 학술논문 발표대회
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• pp.314-315
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• 2018

The long-life housing certification system must have been applied more than 1,000 households apartments since 2015. The basic design guideline for the popularization of long-life housing has been developed in 2017, which include the concept of long-life housing and basic principle of design long-life housing. The demonstration project of long-life housing is be currently under construction in Sejong-si. The aim of this study is to find items on design checklist considering construction stage. The main goal is the development of design manual of long-life housing.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 춘계 학술논문 발표대회
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• pp.149-150
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• 2019

Recently, major public owner and general contractors in Korea are actively preparing and improving BIM manuals and guidelines to effectively apply BIM technology in construction projects. These guideline has a purpose to define the scope of the applying BIM technology to each construction phase and to explain the minimum technology guidance required for the initial stage. In situations where BIM data are to be submitted within a limited time and cost at the design stage, a BIM data preparing process should be carried out in advance to meet the BIM interoperability between the pre and post of construction precess. In this research, we propose the scope of the BIM guidelines to meet and to be considered for the BIM based review of constructability and economic evaluation of Apartment.

• 대한건축학회논문집:구조계
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• 제34권6호
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• pp.45-53
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• 2018

The construction work to establish a safety management plan should be carried out Design for Safety(DFS) task by the designers from May 2016 according to the amendment of the Construction Technology Promotion Act. However, designers lack experience in construction work and lack of information on safety accidents, so it is not easy to predict a disaster that may occur during the construction phase. Therefore, the purpose of this study is to provide information about disasters that can occur in each construction work in order to enable designers to efficiently perform DFS task in the design phase. In this study, the construction work was classified by work unit and the disaster risk assessment was conducted using the Failure Mode and Effect Analysis technique. The disaster information by work unit analyzed in this study can be used to provide designers with an alternative to prevent disasters at the design stage. Disaster information by work unit of apartment construction can be used by designers to prepare an alternative for disaster prevention at the design stage.

• 한국안전학회지
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• 제35권6호
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• pp.54-60
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• 2020

Recently, the issue of construction safety is growing. In the construction industry, accidents have continued to increase since 2000. In particular, the number of accident deaths at small and medium-sized construction sites accounts for 72.11% of the total number of accident deaths in the construction industry. For construction safety, prior safety evaluation systems such as Design for safety and safety management plan preparation are in place. However, at construction sites, these systems are recognized as formal legal documents, and their effectiveness is greatly reduced. Therefore, in this study, a linkage model that links design safety review information and safety management plan information was presented so that the safety management plan can be efficiently established. In addition, the effectiveness of the proposed process was verified as an example of actual work. The linkage model will contribute to improving the safety management environment at the site by increasing the productivity of safety management work by enabling easy sharing of risk factor information in the construction stage safety management work. The results of this study will be used as basic information for the development of the integrated safety management system.

• 대한토목학회논문집
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• 제37권2호
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• pp.409-417
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• 2017

본 연구는 건설 공사도중 계약상대자의 책임 없는 사유로 인하여 공사기간이 단축되는 경우 발생하는 추가비용과 관련하여 계약 당사자 사이에 발생하는 분쟁을 예방하는 방안의 연구를 목적으로 하였다. 공기단축으로 인한 추가비용에 대한 클레임 사례 및 법원의 판결 사례등을 검토한 결과 추가비용 산정에 대한 규정의 미비가 대표적인 문제점으로 나타났다. 이러한 문제점에 대한 연구의 결과로 1단계에서 추가비용을 처리하는 절차를 제시하였고, 절차 중 공기단축 계획 및 승인과정을 거치도록 하여 계약 당사자 사이의 추가비용에 대한 다툼을 예방하도록 하였다. 2단계로 추가비용 산정과 관련된 현행 규정의 미비한 문제점을 해소하는 규정의 제정 및 개정 방안을 제시하였다. 본 연구에서 제시한 절차 및 규정의 제 개정 방안을 통하여 공기단축과 관련한 현행 규정이 미비한 문제점을 해소하고 분쟁을 예방하며 이로 인한 손실 등을 방지하는 등 선진화된 계약관리의 기초가 되도록 하고자 한다.