• 한국건설관리학회논문집
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• 제9권5호
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• pp.137-148
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• 2008

국내 건설 프로젝트의 규모가 점차 복잡화 대형화 되어감에 따라 건설 사업을 체계적으로 계획하고 효율적으로 관리하기 위한 건설 정보화 시스템의 사용은 프로젝트 관리에 있어 매우 중요한 요소가 되어 왔다. 그러나 건설 정보화 시스템의 이러한 중요성에도 불구하고 건설 정보화 시스템이 주로 현장관리자보다는 전체 프로젝트를 총괄하는 본사 관리자 관점에서 개발되고 평가 및 개선되어 왔기에 현장관리자 관점에서의 시스템 활용도 및 만족도는 비교적 낮은 것으로 조사 및 분석되었다. 따라서 본 연구에서는 건설 정보화 시스템의 최종 사용자인 현장관리자를 중심으로 시스템이 제공하는 정보의 중요도 및 만족도를 고려하여 건설 정보화 시스템을 평가하고 그 결과를 시스템 개선에 반영할 수 있도록 하는 만족도-중요도 매트릭스 기반의 평가모형을 제안하였다. 건설기업의 본사관리자 및 개발자는 건설 정보화 시스템의 개선 시, 본 연구를 통해 제안된 평가모형을 토대로 현재 활용 중인 건설 정보화 시스템을 체계적으로 평가하고 정보의 중요도 및 만족도를 고려한 시스템의 합리적 개선방향을 제시할 수 있을 것으로 기대된다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2006년도 춘계 학술발표회 논문집
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• pp.1251-1258
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• 2006

Field evaluation of new scour countermeasure using geobag and aggregate is performed to prepare for the basis of design and construction standard in Korea. Polyester non-woven geotextile is determined as a geobag material and tire cord is used to sew up the geobag which contain aggregate. Hwasang-gyo(bridge) is selected as a pilot test site through office review and field investigation. According to the design flood of Hwasang-gyo(bridge), the size and volume of geobag are calculated and construction area and required number of geobags are computed by considering the specification of the pier and foundation of the bridge. After construction, scour depth around geobag construction area is measured and the stability of geobag is ascertained by using pole and digital camera.

• 대한건축학회연합논문집
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• 제20권6호
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• pp.1-8
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• 2018

In generally, the estimation work regarding building mechanical service system in comparison with other architectural estimations is time-consuming, and the process is continuously getting more difficult because of the increased usage of the attached piping materials such as fittings and supports in addition to their complicated construction processes. In order to improve this problem, the Korean authority provides a simple method to estimate the attached material rate regarding the main piping material, which is the most time-consuming work in the architectural mechanical estimation. However, to be an applicable method on construction site, a proper conversion rate of the attached piping material is still required for the proposed method regarding building usage and working types. Therefore, the purpose of this research is the suggestion of the material and labor cost rate of the attached piping materials such as the fittings and supports by work types and fitting methods of indoor fire, sprinkler, and extinguishing gas piping work of mechanical fire protection facilities in office buildings that have been designed after 2010.

• 건축역사연구
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• 제32권5호
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• pp.59-68
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• 2023

Jogyeongdan is an altar built by the Korean Empire within the burial grounds of Sijomyo(始祖墓), the Jeonju Lee clan, as a part of their posthumous respecting project. This site adheres to strict rules and formalities that are comparable to those of the royal tombs of the Joseon Dynasty, with its altars and monument House demonstrating construction techniques that hold high value in architectural history. This study compares and analyzes construction-related records such as Uigwe, Statements, and Figure, along with their historical context. Through this effort, the study explores in detail the original form of Jogyeongdan at the time of its construction and subsequent transformations in later periods. Findings showed that the Figure was drawed by Chae Yongsin and was only a blueprint prior to the construction; it was modified during the actual construction process. A part of Jogyeongdan project was carried out by demolishing four government office buildings that were closed because of the Gabo Reform in order to secure wood and roof tiles, among other materials. Additionally, concluded the Jaesil was by relocated Deokryudang from Samryeyeokcham. Further, instances of distinctive terminology usage were found related to construction materials in the Jogyeongdan Uigwe, which were not used in another Uigwe. These terms were distinguished in detail according to the locations in which the materials were used.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.794-799
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• 2009

The temperature control of in-place concrete is the most important factor for an early age of curing concrete. Heat stress of mass concrete caused by the heat of hydration can induce the crack of concrete, and a frost damage from cold weather casting concrete results defect on compressive strength and degradation of durability. Therefore, success and failure of concrete work is dependant on the measurement and control of concrete temperature. In addition, the compressive strength assessment of in-place concrete obtained from the maturity calculated from the history of temperature make a reduction of construction cycle time, possible. For that purpose, wireless temperature measuring system was developed to control temperature and assess strength of concrete. And, it was possible to monitor the temperature of concrete over 1km apart from site office and to take a proper measure; mesh-type network was developed for wireless sensor. Furthermore, curing control system that contains the program capable to calculate the maturity of concrete from the history of temperature and to assess the compressive strength of concrete was established. In this study, organization and practical method of developed curing control system are presented; base on in-place application case.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 1999년도 추계학술대회논문집
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• pp.225-233
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• 1999

Harbor design and construction plan in Korea becomes the most hot issue both in the Maritime Affairs and Fisheries Office and in the related port industries. Production of the plane and cross section maps together with the profile map for harbor project is done firstly and is important in all procedure because it is the most basic datum in counting the constructional expense for determination of the area and capacity. As the expense assigned on surveying part among the total expenses of harbor planning and construction in Korea is very small, it is difficult to make exact maps. Moveover, because the method used to make such maps is mostly traditional surveying such as plane table surveying , offset surveying, stadia surveying and level surveying, etc, it is difficult to get precise three dimensional maps. Therefore, for making more precise map in the harbor project, we have to use the newest surveying equipment. This study discusses the method of old surveying and recent surveying used for the three dimensional map of the site for lighthouse which gives navigational aids for the in-and out-bound ships. The authors are proposing a method for more precise three dimensional positioning in this study.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2010년도 춘계 학술논문 발표대회 1부
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• pp.37-39
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• 2010

In this study, with new office construction site of S Construction company as subject, to solve all the problems according to reduced hydration heat and temperature crack of mass concrete used mat foundation and placing time difference, low heat combination of coarse particle cement and fly-ash and setting time difference applied AE water reducing agent, and to prevent the early frost damage caused by low outdoor temperature, a heat insulation method using double bubble sheet was conducted. As a result, it was found that hydration heat and setting time difference was reduced by applying a low heat combination and setting time difference construction method, and that the high insulation capability of the double bubble sheet was able to not only prevent the early frost damage but also reduce temperature difference between the central part and the upper part of mass concrete.

• 한국BIM학회 논문집
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• 제9권4호
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• pp.41-50
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• 2019

Digital models for a cable-stayed bridge are defined considering data-driven engineering from design to construction. Algorithms for digital object generation of each component of the cable-stayed bridge were developed. Using these algorithms, Level-3 BIM practices can be realized from design stages. Based on previous practices, digital object library can be accumulated. Basic digital models are modified according to given design conditions by a designer. Once design models are planned, various applications using the models are linked the models such as estimation, drawings and mechanical properties. Federated bridge models are delivered to construction stages. In construction stage, the models can be efficiently revised according to the changed situations during construction phases. In this paper, measured coordinates are imported to the model generation algorithms and revised models are obtained. Augmented reality devices and their applications are proposed. AR simulations in construction site and in office condition are tested. From this pilot test of digital models, it can be said that Level-3 BIM practices can be realized by using in-house modeling algorithms according to different purposes.

• 문화기술의 융합
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• 제6권3호
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• pp.369-375
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• 2020

본 연구의 검토대상 구간은 전력구 시공을 위한 쉴드 TBM 굴착 도중 터널 막장면을 통해 지하수 유출이 발생한 구간이다. 따라서 공사 전부터 지하수위의 변화가 발생되는 시점까지의 상황을 분석하기 위해 공사 중 관찰된 지하수위 변화를 토대로 주변 지반현황을 반영하여 3차원 수치해석을 수행하였다. 이를 통해 현장 주변에서 발생한 지하수위 변화와 터널공사의 상관성을 파악하였다. 본 연구의 수치해석결과는 대상지반에서 측정된 지하수위 계측결과와 유사하며 쉴드 TBM 막장면으로의 지하수 유출량 또한 실제 측정결과와 유사한 수준으로 나타나 본 연구에서 설정한 수치해석 방법과 모델링은 현장여건을 잘 반영하는 것으로 분석되었다.

• 한국환경복원기술학회지
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• 제3권3호
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• pp.100-104
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• 2000

We have put considerable time and work to find a proper solution to restore the damaged natural environment due to Dam construction, and to restore the field around Dam on the basis of Environmentally Sound Sustainable Development(E.S.S.D). We've replaced the site which had been used as a equipment space with the natural-oriented park, have made a wildlife corridor for those animals which have been living in the area in a newly constructed road to in an out, and have introduced a streamside plant to organize green-space. We've received incredible favor from visitors and residents for the environment restoration. The natural-oriented park plays a role of giving the citizens to the pleasure and the comfort.