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건설공사보험 사례를 활용한 건설현장 인명사고 정량화 모델 개발 기초연구
하선근 ( Ha Sun-geun ),김태희 ( Kim Tae-hui ),김지명 ( Kim Ji-myong ),장준호 ( Jang Jun-ho ),손기영 ( Son Ki-young ) 한국건축시공학회 2017 한국건축시공학회 학술발표대회 논문집 Vol.17 No.2
The number of human accidents in the construction industry is increasing every year, and it constitute the highest percentage among industry. This means that activities performed to prevent safety accidents in the country are not efficient to reduce the rate of accidents in the construction industry. In order to solve this issue, research has been conducted from various perspectives. But, research regarding to quantification model of human accidents is insufficient. the objective of this study is to conduct a basic study on quantification model development of human accidents. To achieve the objective, first, Cause of accident is defined the through literature review. Second, a basic statistic analysis is conducted to determine the characteristics of the accident causes. Third, the analysis is conducted after dividing into four categories : accumulate rate, season, total construction cost, and location. In the future, this study can be used as a reference for developing the safety management checklist for safety management in construction site and development of prediction models of human accident.
하선근 ( Ha Sungeun ),김태희 ( Kim Taehui ),나영주 ( Na Youngju ),손기영 ( Son Kiyoung ),손승현 ( Son Seunghyun ) 한국건축시공학회 2018 한국건축시공학회 학술발표대회 논문집 Vol.18 No.1
Many researchers in South Korea have conducted regarding the safety climate and concluded that the safety climate effect on the safety performance. However, the survey tools that were used in domestic research were developed by individuals or designed by reconstituting, translating from previous studies. In addition, the safety climate as a low factor of organizational culture showed up in different types depending on business scale. In order to solve this issue, the objective of this study is to analyze the safety climate level of construction company depending on business scale in South Korea. first, the survey is conducted by NOSACQ-50 for construction workers. Second, it is analyzed how organizational culture affected the safety climate. Finally, the improvements are suggested on the level of safety climate. In the future, this study will be used as a baseline for the effects of the safety climate on the safety performance in construction site based on business scale.
교육시설물의 LEED 인증유무에 따른 공사비 비교를 위한 기초연구
하선근 ( Ha Sungeun ),장준호 ( Jang Junho ),김지명 ( Kim Jimyong ),손기영 ( Son Kiyoung ) 한국건축시공학회 2017 한국건축시공학회 학술발표대회 논문집 Vol.17 No.1
Currently, the environmental certification such as BREEAM and LEED has been improved for the sustainable development and related research is conducted continuously. Especially, in the respect of economy, it is reported that the construction costs of the certified buildings are more increased than non-certified buildings. However, the report has not focused on the educational building but the residential and commercial buildings. Therefore, the objective of this study is to analyze the difference of construction costs between LEED and Non-LEED educational buildings. To achieve the objective, the buildings data are collected in 21 universities then T-test is used for examining the construction costs. As a result, it shows that the construction costs of LEED buildings are increased by 3.8% comparing with non-LEED buildings.
시스템다이내믹스를 활용한 오피스텔 사업타당성 분석 모델 개발
장준호,하선근,김경룡,손기영,손승현,이택운,Jang, Jun-Ho,Ha, Sun-Geun,Kim, Kyeong-Ryoung,Son, Ki-Young,Son, Seung-Hyun,Lee, Taick-Oun 한국건축시공학회 2018 한국건축시공학회지 Vol.18 No.3
2008년 세계 금융위기 이후 경기침체에 따른 은행의 저금리로 인해 금융상품의 대체재로 상가 오피스텔과 같은 임대수익형 투자 상품에 대한 관심과 투자수요가 증가했다. 이는 오피스텔 개발의 양적인 팽창에는 많은 기여를 해왔지만 과잉공급, 임대 수익률 감소, 그에 따른 개발사업의 부정적인 인식 확산 등 문제점을 야기했다. 문제점의 원인은 하나의 대표 값으로 제시하는 기존의 잘못된 사업타당성 분석에서 찾을 수 있다. 이에 본 연구에서는 시스템다이내믹스를 활용한 오피스텔 사업타당성 분석 모델 개발을 목적으로 한다. 이를 위해 첫째, 사업타당성 연구현황을 파악하고 시스템다이내믹스에 대한 문헌고찰을 수행한다. 둘째, 타당성분석에 있어 고려해야 하는 변수들을 선정하고, 인과지도를 작성한다. 셋째, 인과지도를 토대로 모델 구축을 수행한다. 넷째, 오피스텔 사례와 비교하여 적합성과 유효성을 검증하고 타당성을 비교한다. 본 연구에서 제안한 모델은 오피스텔개발사업의 실행여부를 결정하는 의사결정권자 및 이해관계자에게 의사결정 도구로써 도움을 줄 수 있을 것으로 판단된다. Due to the low interest rates of banks according to the breakdown economy after the global financial crisis in 2008 As a substitute for financial products, the investment demand has been increased for rentable investment funds such as commercial building and officetel. However, the problems such as oversupply, decrease of a rental profit and negative perception of development projects have been occurred. One of the primary problems is the existing deterministic method of project feasibility analysis. Therefore, the objective of this study is to develop feasibility model by applying system dynamics method in residential officetel. To achieve the objective, first, the previous studies are investigated. Second, the causal loop diagram is structured based on the collected data. Third, the feasibility model is developed through the causal loop diagram. Fourth, the effectiveness is validated and compared to collected actual data. The proposed model can be helpful whether or not conduct execution of an officetel development project to the decision makers.
이주형 ( Lee Joo-hyeong ),하선근 ( Ha Sun-geun ),나영주 ( Na Young-ju ),오준석 ( Oh June-seok ),손승현 ( Son Seung-hyun ) 한국건축시공학회 2018 한국건축시공학회 학술발표대회 논문집 Vol.18 No.2
The domestic seismic retrofit guide was primally enacted in 1988, then the mandatory target have been consistently. As a result, the rate of earthquake-resistant is achieved 58.3% in public facilities. On the other hand, the rate of earthquake-resistant is low as 24.8% in education facilities. As education facilities damaged from Gyeong-ju, Po-hang earthquake occurred in South-Korea and the rate of earthquake-resistant is low, the seismic retrofit of existing education facilities got to be ordinary people’s interest. Therefore, domestic researchers have been developed seismic retrofit methods which can apply to existing educational facilities, It is expected to become more active in the future. However, it is insufficient to consideration that how far domestic technology has been developed. Therefore, the objective of this study is to measure the level of domestic research through comparative analysis between domestic and foreign researches that seismic retrofit methods which can apply to existing educational facilities.
국내 건설현장 내·외부 인명사고 리스크 정량화 모델 개발 기초연구
오준석 ( Oh Jun-seok ),하선근 ( Ha Sun-geun ),김태희 ( Kim Tae-hee ),전상섭 ( Jeon Sang-sub ),김지명 ( Kim Ji-myung ) 한국건축시공학회 2018 한국건축시공학회 학술발표대회 논문집 Vol.18 No.2
Many studies regarding construction safety management have been conducted. However, it is insufficient to research on external construction site. As a result, ordinary people around the construction site have injured and have a negative view when they think construction industrial since it has regarded having an overfull industrial accidents on media. To break the stereotype and prevention of accident on construction industry have been emphasized at this point in time, it is necessary to establish a comprehensive safety management system which is considered not only internal safety management but also external safety management. Therefore, the objective of this study is to develop the human accident risk quantification model by utilizing the third party payout data which occurred by incomplete safety management on external construction site. This study is conducted as a basic study for developing safety management manuals on internal·external construct site. In the future, it is expected to be used as a reference.
최적화 기법을 활용한 주거형 오피스텔 프로젝트 수지 분석 모델 개발 기초연구
장준호 ( Jang Junho Kim ),김경룡 ( Kyeong Ryoung ),하선근 ( Ha Sungeun ),손기영 ( Son Kiyoung ) 한국건축시공학회 2018 한국건축시공학회 학술발표대회 논문집 Vol.18 No.1
The domestic construction industry is changing its preference for demand and supply along with urbanization and economic development. Accordingly, initial risk assessments is more important than before. Currently, the research related to risk analysis except for apartment studies is insufficient. Therefore, the objective is to suggest a basic study on financial analysis model development by applying optimization method in residential officetel. To achieve the objective. first, the previous studies are investigated. Second, the causal loop diagram is structured based on the collected data. Third, the financial model is developed by using optimization method. In the future, the proposed model can be helpful whether or not conduct execution of an officetel development project to the decision makers.
확률론적 추정 기법을 적용한 주거형 오피스텔의 최적 분양가 산정 모델 개발 기초연구
장준호 ( Jang Jun-ho ),김태희 ( Kim Tae-hui ),하선근 ( Ha Sung-eun ),손기영 ( Son Ki-young ) 한국건축시공학회 2017 한국건축시공학회 학술발표대회 논문집 Vol.17 No.2
In response to the economic depression, the demand for fixed rent income has increased according to the easing construction regulations. it caused indiscriminated investment to stakeholders. This leads to oversupply in the multi-family Housing market and increases unsold housing and vacancy rates except specific area such as Gangnam-gu.In order to solve this issue, although studies on the optimization price of apartment houses has been conducted, the study is insufficient regarding on residential officetel. Therefore, the objective is to suggest a basic study on optimal price estimation model development by using probabilistic forecasting method in planning phase. To achieve the objective, first, variables are defined such as expenses, financial costs, income, etc. Second, causal loop diagram is suggested. Third, basic optimization prices estimation model is developed. In the future, this study can be used as one of decision making tools in planning phase of officetel development projects.
전상섭 ( Jeon Sang-sub ),장준호 ( Jang Jun-ho ),하선근 ( Ha Sun-geun ),이주형 ( Lee Joo-hyeong ),손기영 ( Son Ki-young ),손승현 ( Son Seung-hyun ) 한국건축시공학회 2018 한국건축시공학회 학술발표대회 논문집 Vol.18 No.2
Recently, risk analysis studies regarding the architecture development project have been carried out by applying probabilistic method. However, it had a limit that this studies was conducted in only an apartment. Therefore, the objective of this study is to develop an optimal price estimation model that can be utilized on residential officetel project by applying Monte Carlo simulation. To achieve the objective, first, the variables are selected affecting the feasibility of an officetel based on literature review. Second, causal loop diagram is constructed by arranging the relationship between variables, then the import and expense model is suggested. Third, to carry out optimized parcel price, the range limits are set for each variables then Monte Carlo simulation is performed. In the future, the developed model is expected to help decision-makers as a tool to determine both risk and feasibility of the officetel development project.