• Title/Summary/Keyword: 토목공사

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Empirical Study for the Appraisal System of Execution Capacity using Correlation Analysis (상관관계분석을 이용한 시공능력평가 제도의 실증적 고찰)

  • Jeong, Keun Chae
    • Korean Journal of Construction Engineering and Management
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    • v.19 no.2
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    • pp.3-14
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    • 2018
  • The system to appraise the execution capabilities of construction companies had been began as the Construction Contract Restriction System in 1958, was changed as the Construction Subcontract Restriction System in 1961, and finally has been operated as the Appraisal and Public Announcement of Execution Capacity (APAEC) from 1996. The APAEC system has been utilized as a firm and unique tool for assessing the execution capacities of construction companies despite many problems and continuous system changes. In spite of numerous studies to improve the APAEC system, however, efforts to analyze the system from the empirical point of view were insufficient. In this study, we analyze the status of APAEC system through analyzing correlations among assessment results of the APAEC, earned values of construction works, construction management performance indexes, and macroeconomic indexes for the past 10 years from 2007 to 2016. As a result of the analysis, it was found that Appraisal Value of Execution Capacity (AVEC) is excessively inflated in engineering and landscaping areas compared to Earned Value of Construction Work (EVCW) and the correlations between the AVECs and EVECs are not high in the areas of engineering, industrial equipment, and landscaping. In addition, technical appraisal values are excessively inflated in engineering and landscaping areas and correlations between AVEC and its components are high in the areas of engineering & building, industrial equipment, and large companies, but low in the areas of engineering, building, landscaping, and small and medium companies. Finally, the concentration of the AVEC is intensifying more and more and the concentration deteriorates construction management performance indexes and macroeconomic indexes. If we continuously improve the APAEC system based on the implications derived in this study, the APAEC system will be able to maintain it's position of a firm and unique means to access the execution capacities of construction companies.

Influence of fault on civil structure and geotechnical investigation (Case Histories) (단층이 토목구조물에 미치는 영향과 지반조사(사례 중심으로))

  • 박남서
    • The Journal of Engineering Geology
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    • v.10 no.2
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    • pp.113-133
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    • 2000
  • The role of site investigation for adequate design of civil structure begins from siting to comment on design and providing other available geotechnical data. As the scope of human's life is wider than before, civil works have become conducted at sites of worse geological condition. So, it is necessary to have more adequate comprehension on the geological condition than ever in order to solve complicated geotechnical problems. In this paper, four fault related cases are introduced. Usually faults are the most influential geological structures on civil works. And the analyses with adequate countermeasures to each case are summarized.

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Effects of Overburden Pressure and Clay Content on Water Retention Characteristics of Unsaturated Weathered Soils (상재하중과 점토함유량이 불포화 풍화토의 함수특성에 미치는 영향)

  • Park, Seong-Wan;Park, Jai-Young;Tae, Doo-Hyung;Sim, Young-Jong
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.30 no.1C
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    • pp.53-63
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    • 2010
  • Since the water retention curve is considered as a major parameter to evaluate the unsaturated ground or soils, overburden pressure and clay content on soils underneath ground surface have not been considered for estimating water retention characteristics. Therefore, a need exists that the effect of overburden pressure and clay content on water retention characteristics was assessed in typical weathered soils found in Korea. Soil-Water Characteristic Curve and the unsaturated hydraulic conductivity were estimated using water retention characteristics under the condition of different overburden pressure, clay content, and de-saturation path. Then, these effects are evaluated with the results of SWCC tests from the laboratory. In addition to that, the unsaturated moisture capacity and diffusivity of each case is discussed.

Study on the Organization of Government-managed Constructions at Dongnae Province in the 19c (19세기 동래 지역의 관영공사조직에 관한 연구)

  • Kim, Sook kyung
    • Korean Journal of Heritage: History & Science
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    • v.39
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    • pp.165-189
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    • 2006
  • The purpose of this study is to examine process and organization of local government-managed construction by reviewing official documents and materials in regard to the official residences and castles officially constructed in Dongnae in the 19c Chosun Dynasty. Results of this study can be described as follows. 1) The construction of official residences requires exchanges of official documents among upper and lower governmental agencies concerned. Previously prepared for some 1 or 2 months, the construction was proceeded through proceeded from Paok to Gaegi, Ipju, Sangryang, Gaeok and to Iptaek. Such construction was carried out independently and concurrently Gijang and Yangsan neighboring Dongnae provided cooperation by way of supplying labor and timbers. 2) Dongnaebu castle was constructed under local autonomy system, like other government-oriented works, as governor of Dongnae became responsible for defending such establishment in 1739. The castle was built up in 1731 as an establishment with 6 gated and 15 forts. Directly controlled by governor of Dongnae, the castle continued to be partially repaired until the 19th century. Under the regime of Daewongun, the castle was enlarged and extended for military strengthening. Besides the gate having double-gated structure for the outside wall, the other five gates came to have bastions and 30 forts were additionally established, dramatically changing the structure of the castle as whole. 3) Government-managed construction was often implemented by an organization whose members included local government officials, lower administrative agencies and local influential persons. The construction of official residences was implemented by Gamyeokdogam which was headed by Jwasu of Hyangcheong. In the construction, chief of military officials became supervisor, who was responsibly supported by Saekri. The construction of castled were divided into several works, for example, establishments of fortress, tower gate and quarrying stone were implemented by the organization of Paejang, Gamkwan and Saekri. As a military official, Gamkwan supervised the construction. Saekri was in charge of related internal affairs. Paejang was an technical expert leading several workers. The construction of castles in 1870 were organized as a general rule having particularity of social conditions on Dongnae.

종합건설업체 탐방 ⑨-「인간존중, 사회기여, 미래도전」이념으로 기반산업 중추 이룬 한라건설(주)

  • Korea Mechanical Construction Contractors Association
    • 월간 기계설비
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    • no.1 s.198
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    • pp.65-71
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    • 2007
  • 한라건설(주)은 1980년 창립한 이래 국내외 토목, 건축, 주택, 플랜트, 환경 사업 등 각 분야에서 눈부신 발전을 거듭하여왔다. 특히 최고의 품질과 경쟁력으로 각종 도로, 철도, 항만, 공항 등 토목공사와 사회기반시설(SOC) 건설사업에 참여함으로써 국가기반시설을 조성하였다. 2006년 1조3500억원 수주, 8300억원 매출 이라는 성과를 거뒀고 2007년 1조6000억원 수주, 9200억원 매출을 목표로 하고 있다. 또한 자연 친화적인 사계절 아름다운 아파트‘한라비발디’를 통하여 소비자의 다양한 요구를 반영, 쾌적하고 편안한 주거환경 조성에 심혈을 기울이고 있다. 「 인간존중, 사회기여, 미래도전」이라는 경영이념을 바탕으로 급변하는 환경에 적극적으로 대처하고, 새로운 기술개발, 우수인재 육성, 핵심경쟁력 강화를 통해 미래를 대비하는 한라건설(주)의 행보는 오늘도 계속되고 있다.

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Assesment of Chemical Resistance of Geomembranes by UV Exposure (지오멤브레인의 옥외노출시험에 의한 화학저항성 평가)

  • Jeon, Han-Yong;Jung, Gu;Choi, Jun-Dong;Park, Jin-Hyuk;Cho, Sung-Ho
    • Proceedings of the Korean Fiber Society Conference
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    • 2001.10a
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    • pp.424-427
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    • 2001
  • 최근에 지오멤브레인, 지오텍스타일 등의 토목합성재료들이 각종 토목공사에 다양한 용도로 사용되고 있고, 그 사용량이 증가함에 따라 이들 재료들의 각종 성능에 대한 평가가 요구되고 있다. 특히 다양한 원료로 제조된 섬유 고분자 재료들을 적용시킨 현장 시스템의 경우 주변환경에 대한 장기 안정성이 요구되며, 주변환경에 대한 안정성은 제조에 이용되는 고분자의 화학조성에 기인한다. (중략)

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It's beautiful' 금호건설 - 주택 건축 시장의 트렌드 리더로 '우뚝'

  • 한국주택협회
    • 주택과사람들
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    • s.224
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    • pp.64-67
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    • 2008
  • 토지와 건축 자재를 다루며 건축 공사를 하는 건설 회사가 예뻐졌다. 집과 건물에 색과 디자인을 입히고 앞선 트렌드를 추구하면 색다른 건축물을 탄생시킨다. 바로 40년간 주택 토목 건축 등 건설 전 분야에서 풍부한 경험과 우수한 시공력을 갖춘 금호건설이다. 변화하는 주택 시장을 리드하는 금호건설의 비전과 주요 프로젝트에 대해 알아보았다.

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제주도 유일의 ESCO (주)도암엔지니어링

  • O, Hye-Eun
    • The Magazine for Energy Service Companies
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    • s.43
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    • pp.24-25
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    • 2006
  • (주)도암엔지니어링(대표 오관준)은 지난 1998년 (주)도암기술사라는 전문 엔지니어링 회사로 설립돼 설계와 감리, 토목측량업으로 힘든 IMF를 슬기롭게 극복했다. 그 후 건축전기, 소방 및 통신공사에 대한 설계, 감리 및 진단에 대한 KAS 9001/ISO 9001인증을 획득(2000년)하면서 (주)도암엔지니어링으로 업체명을 변경하고 지금에 이르렀다.

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암버력 쌓기 모형실험에 의한 최적 암버력 쌓기 공법 제시

  • 황세환;우동찬;손의권;최명진
    • Geotechnical Engineering
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    • v.20 no.4
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    • pp.26-37
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    • 2004
  • 암쌓기에 있어서 재료의 입경 분포 및 시공형태는 시공성과 시공 후 토체의 안정성에 큰 영향을 미친다. 그중 암버력을 쌓기 재료로 사용하여 시공하는 경우에 대해서는 일반적인 쌓기의 경우와 다른 시공법이 제안되어 있다. 최근 발주되는 턴키설계 규모의 토목 사업에서는 터널 및 사면 절취 등의 과정에서 암버력이 많이 생산되고 그것을 활용하여 공사구간의 절취 구간에 사용하는 방안이 일반화되었다.

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