기존 공동주택의 리모델링 용이성 평가 체계

차우철,임병욱,신창현,신병현,이재석,전재열,Cha, Woo-Cul,Lim, Byung-Wook,Shin, Chang-Hyun,Shin, Byung-Hyun,Lee, Jea-Sauk,Chun, Jae-Youl 한국건설관리학회 2008 건설관리 : 한국건설관리학회 학회지 Vol.9 No.5

Apartments production without a previous example is existed by suddenly rapid growth of population and city. So this mass producted aged Apartments have many problems that is aged and staleness. Confrontation of obsolete and staleness is Build&Scrap and Remodeling. But Remodeling is much better than Build&Scrap Because Remodeling has Social, Economical, Environmental merits. This Research is Feasibility Evaluation System on an object of Remodeling. Feasibility Evaluation means Possibility on Objective action on aiming action in other words. It means degree of difficulty about purpose to act. Remodeling is based on existing apartment, to improve ability and performance of existed aged Apartment and by engineering technique and method. A point of view, development of Remodeling technique and popularization is necessary as well as Remodeling Plan and Construction technique of applied Existing building logical Approach is that. The purpose of this paper is handling allowance range of Remodeling Plan and Achievement accomplishment Feasibility Evaluation of purpose and objective and Understanding. Remodeling Feasibility is evaluated by two aspects. The first is Macro Level Approach of Remodeling Feasibility Evaluation on a Apartment Complex, and The second is Micro Level Approach of Remodeling Feasibility on each housing part is evaluated about removal and dismantlement. $1970{\sim}80$년대에 대량으로 공급된 기존 아파트는 오늘날 노후화라는 문제점을 가지고 있다. 노후화의 대처수단으로 크게 Build&Scrap과 리모델링을 생각할 수 있다. 그러나 리모델링의 경우 사회적, 경제적, 환경적 이점으로 인하여 Build&Scrap 보다 낫다고 할 수 있다. 본 연구는 리모델링 용이성 평가체계에 관한 연구이다. 다시 말해 용이성평가는 목적 공사의 용이한 정도를 의미하며, 공사목적에 대한 난이도를 의미한다. 리모델링은 기존 아파트를 기반으로 재설계하고 요소기술을 도입하여 건축물의 기능 및 성능을 높이는 수법 및 공법으로 이루어 졌다. 어떤 관점에서 보면, 리모델링 기술의 발전과 보급은 리모델링 계획과 이미 적용되고 있는 기존의 빌딩의 논리적 접근처럼 관리가 필요하다. 리모델링의 용이성은 두 가지 측면에서 평가된다. 첫째 아파트 단지의 리모델링 용이성을 평가하는 Macro Level과 두 번째는 주동단위의 철거 및 이동의 리모델링 용이성을 평가하는 Micro Level이다. 본 논문의 목적은 리모델링 계획과 목적, 객관성, 그리고 용이한 정도의 허용 범위를 조정하는데 있다.

발주자의 요구사항을 고려한 발주방식 선정 방법에 관한 연구

남혜원,안경환,김창교,이재석,전재열,Nam, Hye-Won,Ahn, Kyung-Hwan,Kim, Chang-Gyo,Lee, Jea-Sauk,Chun, Jae-Youl 한국건설관리학회 2009 건설관리 : 한국건설관리학회 학회지 Vol.4 No.3

현행 공공공사에서는 예산에 맞추어 공사를 진행하는 방식을 취하고 있기 때문에 발주자(발주기관)의 요구사항을 충분히 만족시키지 못하고 있다. 따라서 발주자의 요구사항에 맞춘 발주방식 선정에 관한 연구가 필요하다. 이에 본 연구에서는 우선, 발주방식의 정의 및 특성과 미국, 영국, 일본 등 국내 외의 발주시스템을 고찰하였다. 이를 통해 발주방식을 선정하기 위해서는 최고 가치를 지향해야 된다는 결론을 도달하였다. 최고 가치를 지향하는 발주방식을 선정하기 위해서는 가장 우선적으로 발주자의 주요요구사항인 비용, 품질, 일정에 대한 고려를 해야 한다. 이에 본 연구에서는 발주자의 주요요구사항인 비용, 품질, 일정의 상관관계를 분석하였으며, 이를 통하여 여러 가지 발주방식 중 성능발주, 대안발주, Turn Key, 사양발 주의 주요선정요인을 비용, 품질, 일정으로 분류하였으며, 이에 대한 발주방식 선정 방법을 제시하였다. Recently, operation of highway is the complex digital Infrastructure based on complicated IT. The application of IT is increasing more and more in digital Infrastructure. Though IT is very convenient, if unpredicted operating risk of highway occurs, widespread damage can be large. When operating risk of highway occurs, road users are out of smoothly-run service because of the operating interruption. This risk causes unpredicted operating management cost and additional maintenance cost. It will excess over the planned operating cost, which may leads to users's unsafety and operator's insolvency because of income loss. Until now, related studies to find out the risk are not sufficient. The purpose of this study is to suggest risk cost items and to estimate the reasonable risk cost by using simulation method in case of occurring the huge power failure at the operating digitalized highway. This study indicates the several plans to hedge against risk cost and the management of highway project. From now on, it will be used as basic data to confirm the soundness of operating system in Digital Infrastructure.

건설업체의 경영성과 예측모델 구축

차우철(Cha Woo-Chul),이종식(Lee Jong-Sik),권원(Kwon Won),이재석(Lee Jea-Sauk),전재열(Chun Jae-Youl) 대한건축학회 2008 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.28 No.1(구조계)

Korea's construction industry has attained exterior growth. It currently faces much competition, however, due to the country's economic woes and investment in construction through IMF at the end of 1997, the changes in the country's related policies and systems, the reduced number of construction projects, and the recession in the construction industry. Due to these changes in Korea's construction market, 145 subcontractors (whose work is based on the subcontracts they are able to obtain from general contractors) have gone bankrupt this year, a 74.7% increase compared to the 83 subcontractors who went bankrupt in the same period last year. This study looks into what caused such subcontractors to go bankrupt, such as their assumed inability to predict the future scenarios of their companies. It also constructs a model that can be used by a construction company in assessing its own management ability and performance, such as integrating a balanced score card with system dynamics, to support decision-making.

CBR+GA모델을 활용한 물량기반 철근콘크리트 골조공사비 산정 시스템 개발

강병주(Kang Byung-Joo),조재호(Cho Jae-Ho),이종식(Lee Jong-Sik),이재석(Lee Jea-Sauk),전재열(Chun Jae-Youl) 대한건축학회 2010 大韓建築學會論文集 : 構造系 Vol.26 No.3

Recently expanding market for largely scale construction projects, cost management of construction project have been increasingly recognized as an important factor responsible for the project success. But public organizations have been continuously operating the same methods as before in cost estimating, so it raise an issue of reliability for estimated cost. Therefore, this study present a highly reliable model that makes preliminary estimates based quantity data in early design stage. it enables engineers to efficiently manage total cost of project as well as partial cost estimating. This study develop a model of database that is created with historical data conducted by government offices. The model proposed can estimate a cost for RC Structure in schematic design stage, and it is applied to CBR+GA logics to explore best similar cases. In case of estimating methods used to previous research, it is based on actual cost data. Due to the cost estimating compensated by inflation rate vary in market economic conditions, it will follow as an inevitable consequence of reliability problem. It needs to find better way to ensure accuracy through quantity database. Also, This study has been conducted in attempts to verify the reliability of preliminary estimation. It is checked for the feasibility of presented model with P-National Tax Service Project aside from the database.

기본설계단계에서의 약식 물량산출을 이용한 건축 구조체 공사비 개산견적 모델

김수민(Kim Soo-Min),조재호(Cho Jae-Ho),이재석(Lee Jea-Sauk),전재열(Chun Jae-Youl) 대한건축학회 2009 大韓建築學會論文集 : 構造系 Vol.25 No.12

A prediction of construction cost in preparation for construction document is calculated in compliance with the unit cost in Public construction of korea. This eventually means that the reasonable construction cost of a building can't be determined before construction document phase cost of construction is settled and that the cost of construction is calculated inefficiently because of connection failing between cost management of detailed estimation and information. To improve those problems, therefore, Cost estimating model of structural building elements with approximate quantity survey method is suggested in this research. The model predict the amount of materials and the cost of construction on the basis of historical similar cases. In the direction of data analysis of this research, ratio statistics value is put to practical use to fit into the peculiarities of approximate estimate of each work trade on the basis of actual data amount of materials of historical cases. In addition, the construction phase is connected through the result of a approximate estimate sorted by elements, details work trade.

기존 건물의 생애주기를 고려한 친환경 인증 기준 분석

서정규(Seo Jung-Kyu),김명운(Kim Myung-Un),박종순(Park Jong-Soon),이재석(Lee Jea-Sauk),전재열(Chun Jae-Youl) 대한건축학회 2009 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.29 No.1(구조계)

It is strengthened sustained development and certification criteria in foreign green building certification system which does green building evaluation of a building the environmental disruption by construction tries to be minimized, and to guide construction of an environmental building. Necessity of green building re-certification raises its head domestically, and importance of administration and maintenance management of a building as opposed to an existing general building is outstanding. There is such a green building no creation for positive environmental management system operation after the certification acquisition. However, as for most construction industry company, interest is concentrated on only improvement of initial environmental performance of a building and reduction of relative building costs. As the result it is the fact that is not enough for sustained environmental management improvement and energy operation management of rate that reflected the whole life cycle of a building. This study compares an evaluation classification system of foreign green building certification criteria and an item concerned with operation of an existing building at the maintenance management side. Thus suggest is going to do limitation and an improvement direction of green building certification criteria.

리모델링 공동주택의 성능평가 체계 및 프로세스

김규진(Kim, Gyu-Jin),홍은화(Hong, Eun-Hwa),이재석(Lee, Jea-Sauk),전재열(Chun, Jae-Youl),김병수(Kim, Byung-Soo) 대한건축학회 2015 大韓建築學會論文集 : 構造系 Vol.31 No.10

Currently, a ‘performance assessment system on existing building,’ which objectifies the performance of the entire building and is the baseline data during real estate transaction and maintenance, is not yet being performed and does not exist in the country. With the recent trend of aging population, increase of interest in the environment, and the change of the initiative of housing market from supply-centered to inventory-centered, utilizing existing buildings is as demanded as securing newly-constructed houses nowadays. In order to do so, satisfying the demands of residents by improving the quality of existing buildings that lack in performance and extending the term of usage, as well as an objective assessment system on existing houses for a smooth flow of sales of existing houses are being required.

건축프로젝트 시공단계에서 갈등원인 현황 분석

강병주(Kang Byung-Joo),차우철(Cha Woo-Chul),권원(Kwon Won),이재석(Lee Jea-Sauk),전재열(Chun Jae-Youl) 대한건축학회 2009 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.29 No.1(구조계)

This study aims to identify the kinds and quantity of conflicts arising during the initial construction phase when conflicts occur the most with the greatest impact. Arbitration data from Korean Commercial Arbitration Board and cases of lawsuits filed with the Supreme Court were analyzed. Previous researches conducted by Project Management Institute and the research methodology of Pareto Analysis were used. Causes for conflicts by stage were surveyed and examined, and an effective method for addressing and managing conflicts for project managers were proposed.