• 한국건설관리학회논문집
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• 제24권3호
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• pp.52-61
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• 2023

Conflicts in a construction project not only make negative impacts on project performance such as schedule delay or cost overrun but also require social cost to resolve the conflicts. Although the conflict needs a preemptive management because a conflict usually begins with a complaint, existing studies have focused on conflict resolution after it occurs. This study identifies and categorizes complaints which mainly appear in the construction projects. Those complaints were evaluated and quantified in terms of occurrence frequency and potential to conflict through a questionnaire survey with industry experts. Using the survey results, this study examines the characteristic of complaints in linear project and clustered project, and analyzes what kind of complaints occur by project type. As the results, this study derives the complaints with high potential to the conflicts that should be managed first during managing a construction project in each project type.

• 한국건설관리학회논문집
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• 제21권3호
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• pp.11-19
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• 2020

건설업에서의 재해는 수십 년 동안 다른 산업보다 많이 발생하였기 때문에, 건설업에서의 재해는 반드시 줄여야 한다. 이러한 문제를 해결하기 위해서 작업분류체계(WBS) 및 위험분류체계(RBS)를 제시하였다. WBS와 RBS는 계층적 구조로 작업 및 위험 단위를 쉽고, 빠르게 찾을 수 있다. 그래서 본 연구에서는 건설업에서의 재해를 예방하기 위해 통합 WBS-RBS 프레임워크를 개발하고자 한다. 연구의 순서 다음과 같은 3단계로 진행되었다. ① 데이터 수집 ② 데이터 분류 ③ 통합 WBS-RBS 프레임워크 개발 순으로 진행되었다. 연구의 결과 가장 사고가 많이 발생한 건물용도, 건설공종 및 재해요인을 제시할 수 있었다. 연구 결과를 통해 의사결정자는 건물용도, 건설공종, 및 재해요인의 위험 수준을 고려할 수 있다.

• KIEAE Journal
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• 제7권6호
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• pp.107-112
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• 2007

Recently hybrid beam system is widely used because it has many structural advantages such as short construction period and low story height etc. Generally steel wide flange beam exposure type and embedded type hybrid beams are constructed. Even though exposure hybrid beam is easily constructed, the fire proofing protection process is necessary because steel wide flange beam cannot resist to fire itself. Story height reduction type hybrid beam, which is introduced hybrid beam in this paper, does not need fire proofing protection process because it is constructed as a fully embedded type hybrid beam. Developed construction process and actual construction cases of story height reduction type hybrid beam were introduced in this study.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1997년도 가을 학술발표회 논문집
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• pp.743-748
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• 1997

In this paper, a new type of precast perforated concrete block is presented to be used in the construction of a step seawall. The overtopping rate of the perforated step seawall is lower than that of the traditional non-perforated step seawall. In construction stage, the cost of total construction of the perforated block is cheaper than that of traditional block. The new type of perforated block may be used as an alternative for shore protection facility.

• KIEAE Journal
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• 제14권5호
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• pp.29-38
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• 2014

The Purpose of this study is to analyze the investigation of consumer's consciousness for Han-Ok construction of community facilities in an apartment housing. The contents of this study were largely composed of two parts; First was about concept and type of 'New Han-Ok type' public building. Second was about consciousness for Han-Ok construction of community facilities in an apartment housing. The result to this study is as following: 1) the concept of 'New Han-Ok type' public building should not only be defined in terms of cultural property or Han-Ok experience facilities but daily life and practical community. 2) the consciousness for Han-Ok construction of community facilities in an apartment housing was recognized affirmatively more than 75.9%. 3) the strengths of 'New Han-Ok type' public building was as following: daycare centers & small libraries & management office-use of eco materials, senior centers-traditional maintenance, community center-ease of daylight and ventilation. 4) Weaknesses of 'New Han-Ok type' public building was as following: daycare centers-security problem, senior centers-inconvenience of space, community facilities-inconvenience of facilities, small libraries-lack of storage space, management office-inconvenience of moving line. The conscious research for 'New Han-Ok type' public building should succeed for vitalizing for Han-Ok.

• 한국과학교육학회지
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• 제38권3호
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• pp.393-405
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• 2018

본 연구에서는 소리의 전달에 대해 개인모형 구성과 모둠모형 구성이 혼합된 수업 전략의 실행에서 나타나는 실제 교실 상황에서의 모둠모형 구성 유형을 분류하고 각 유형별 정보의 흐름을 분석하여 실제 교실 환경에서 모형의 공동 구성을 위한 시사점을 얻고자 하였다. 서울 소재 남녀 공학 중학교 2학년 1개 학급의 33명을 대상으로 소리전달에 대한 2차시 수업이 진행되었고 총 65개의 개인모형과 16개의 모둠모형 구성 과정이 분석되었다. 모둠모형 구성 유형은 정체형(Unchanged), 열거형(Enumerated), 정교형(Elaborated)으로 분류하였다. 정체형(Unchanged) 구성은 8개 모둠, 열거형(Enumerated) 구성은 3개 모둠, 정교형(Elaborated) 구성은 5개 모둠에서 나타났다. 정체형과 나열형 구성에서는 정보의 1차 전파자이며 개인 모형의 독자적 구성자(i.I)가 모둠모형에 기여하는 경우가 많이 나타났다(각 50.0%, 54.5%). 정체형 구성에서는 1명의 정보가 모둠원 전체에게 전달되는 방사형 흐름이 나타났으며, 나열형 구성에서는 정보 전파의 시작점이 두 군데에서 나타났다. 정교형 구성에서는 모둠 내 정보의 흐름이 선형으로 전달되는 '전달형' 흐름이 나타났으며, 정보의 2차 전파자이며 반성적 구성자(2d.R)가 모둠모형에 기여한 경우가 두드러지게 나타났다(58.3%). 본 연구는 이상적인 상황이 아닌 실제 교실 맥락에서 나타나는 복잡한 모형구성 과정을 이해할 수 있는 하나의 관점을 제안하였으며 이를 통한 실질적이고 구체적인 전략을 제안하였다. 본 연구의 결과는 한국 소집단 문화의 특징을 고려한 모형구성 전략의 필요성을 제안하며, 추후 연구를 통해 풍부한 논의가 진행될 수 있을 것으로 기대한다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2006년도 추계 학술논문 발표대회 논문집
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• pp.123-126
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• 2006

Existing Deck Plate for a one of system forms, there is various advantage and application actual results increasing rapidly. But design of deck is depending on engineering data collections or design data on deck manufacture ordinarily. When construct, is responsible for deflection occurrence, And Because confirmation of crack occurrence region is impossible, there is difficulty of repair, reinforcement about crack and water leakage. According to got following conclusion as result that economic performance, preservation administration and repair reinforcement develops easy using steel truss snap tie by wedge pin on coating plywood that is slab Panel Wood System Form method of construction there is Deck Plate's advantage. (1) In stab lower part is exposed disjointing in which a criminal is fastened to be interrogated after construction acceptance and repair, reinforcement of crack is possible (2) Construction cost curtailment effect of about 29.2% than conventional type and about 10% than deck plate (3) Construction period reduction of about 3 day than conventional type and about 0.3 day than deck plate (4) Labor curtailment effect more than about $29{\sim}50%$ from conventional type

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.788-793
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• 2009

Constructing substructures by using Top-Down or Downward method needs an efficient formwork system because of difficulties in supporting concrete slabs from the bottom while excavation is in process. Existing underground formwork systems can be classified by three types: graded ground supported type (Slab On Grade, Beam On Grade), suspension type (Non Supporting Top Down Method), and bracket supported type (Bracket Supported R/C Downward). Each method has its own advantages and limits. Application of a specific formwork system for a given construction site is determined by various conditions and affect construction time and cost. This paper presents a newly developed underground non-supporting formwork system, which combines the advantages of a suspension type and a bracket supported type while it overcomes limits of two types. The developed system has a moving formwork which is supported by suspension cables hanging from the bracket placed at the top of pre-installed substructure columns. Then, the moving formwork is repeatedly lowered down for the next floor below to support concrete slab during curing. The details of this bracket and cable supported system have been investigated for the improvement of easiness in construction.

• Advances in concrete construction
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• 제10권4호
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• pp.333-343
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• 2020

In the architectural design process, the selection and configuration of the structural system significantly affect the earthquake behaviours of the reinforced concrete buildings. The main purpose of this study, the effects on the earthquake performances and the rough construction cost of the buildings of the slab type in reinforced concrete buildings are to examine comparatively for different local soil classes. The results obtained from this study have been determined that the building model having slabs with beams is safer compared to other types of slabs, especially when considering the vertical bearing structural elements (columns). It also shows that other types of slab, except for slab with beams, reduce the earthquake performances of reinforced concrete buildings, increase the displacement values, 1st natural vibration period values and the cost of rough construction. This matter reveals that slab type is quite important and the preference of beamed slabs in reinforced concrete buildings to be constructed in earthquake zones would be more appropriate in terms of safety and cost.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2014년도 춘계 학술논문 발표대회
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• pp.220-221
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• 2014

The various type of polymer such as silicone, modified silicone, polyurethane, etc are being used in domestic construction sealant market. Once sealant is installed in building, it should maintain their specific performances such as preventing moisture, rain, air, etc against environment conditions for several decades. In this study, weather resistance as per polymer type of sealant has been evaluated using QUV accelerated weathering tester. As a result, weather resistance of silicone is highest and modified silicone is lowest in the comparison of other type of polymer.