최근 건설 분야의 BIM 도입에 따라 BIM 기술의 발전 그리고 특허 정보는 지속적으로 증가하고 있으나 종합적이고 객관적 자료에 근거한 국내외 BIM 기술의 동향을 파악하는 연구는 매우 부족한 실정이다. 이에 본 연구에서는 한·중·일·미의 BIM 관련 특허 정보를 활용하여 기술 수준을 분석하는 것을 목적으로 하였다. 이를 위해 윕스온(WIPSON)에서 제공하는 BIM 관련 특허 정보를 출원 대상별로 수집한 결과 한국 73건, 중국 206건, 일본 31건
{"title":"BIM 기술 융·복합 수준 분석을 위한 특허 정보 활용 방안","authors":"Tae-Won 김태원Kim, Jae-ho 이재호Lee, Yoonsun 이윤선Lee, Jae-jun 김재준Kim, Taisik 이태식Lee","doi":"10.6106/KJCEM.2017.18.3.095","DOIUrl":"https://doi.org/10.6106/KJCEM.2017.18.3.095","url":null,"abstract":"최근 건설 분야의 BIM 도입에 따라 BIM 기술의 발전 그리고 특허 정보는 지속적으로 증가하고 있으나 종합적이고 객관적 자료에 근거한 국내외 BIM 기술의 동향을 파악하는 연구는 매우 부족한 실정이다. 이에 본 연구에서는 한·중·일·미의 BIM 관련 특허 정보를 활용하여 기술 수준을 분석하는 것을 목적으로 하였다. 이를 위해 윕스온(WIPSON)에서 제공하는 BIM 관련 특허 정보를 출원 대상별로 수집한 결과 한국 73건, 중국 206건, 일본 31건","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124123384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-03-31DOI: 10.6106/KJCEM.2017.18.2.091
Kim， Kyeongseok
: Due to climate change, countries around the world are actively investing in renewable energy, reducing fossil fuel use. 23.7% of world electricity is supplied by renewable energy. As the technology continues to develop, it is in a level to compete in terms of power generation cost, and investment conditions are improving. However, investment in renewable energy projects is not easy. This study analyzed trends of domestic and international researches on economics assessment applying real options analysis to investment decisions of hydro, solar, and wind power projects, which account for a large portion of renewable energy. This study provides (1) the difference between the traditional economic method and the real options analysis, (2) the application process, and (3) the uncertainty elements and option type of the renewable energy project presented by many studies. The real options analysis is suitable for the detailed investment strategy by considering the uncertainties of the renewable energy project and applying the option to improve the profit or to avoid the risk.
{"title":"Review of Real Options Analysis for Renewable Energy Projects","authors":"Kim， Kyeongseok","doi":"10.6106/KJCEM.2017.18.2.091","DOIUrl":"https://doi.org/10.6106/KJCEM.2017.18.2.091","url":null,"abstract":": Due to climate change, countries around the world are actively investing in renewable energy, reducing fossil fuel use. 23.7% of world electricity is supplied by renewable energy. As the technology continues to develop, it is in a level to compete in terms of power generation cost, and investment conditions are improving. However, investment in renewable energy projects is not easy. This study analyzed trends of domestic and international researches on economics assessment applying real options analysis to investment decisions of hydro, solar, and wind power projects, which account for a large portion of renewable energy. This study provides (1) the difference between the traditional economic method and the real options analysis, (2) the application process, and (3) the uncertainty elements and option type of the renewable energy project presented by many studies. The real options analysis is suitable for the detailed investment strategy by considering the uncertainties of the renewable energy project and applying the option to improve the profit or to avoid the risk.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115127467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-03-31DOI: 10.6106/KJCEM.2017.18.2.012
Jongsik Yoon, I. Yu
The biggest reason to prefer the remodeling is a relatively short period of time (5~6 years) compared to the reconstruction work that takes 8~9 years. In addition, from the perspective that the period of temporary residence is usually 24 months, the necessity of shortening is greater. Also, since the remodeling construction period is approximately 28~35 months on average, the strategies and efforts are needed to make up for the shortening the remodeling construction period. For these reasons, this paper is to develop an estimating model for normal project duration of apartment remodeling project. This model is reflected in the remodeling properties thorugh difference analysis of the new apartment construction project. Demolition works, reinforcement works, extension works are different, so this paper newly defines these construction work’s duration in normal project duraion of remodeling. Case study and experts interviews are used to validate normal project duration. This model can be used to calculate rough construction period each alternatives, and will help a strategic decision making among the stakeholders.
{"title":"A Study on Estimating Normal Project Duration of Apartment Remodeling Project","authors":"Jongsik Yoon, I. Yu","doi":"10.6106/KJCEM.2017.18.2.012","DOIUrl":"https://doi.org/10.6106/KJCEM.2017.18.2.012","url":null,"abstract":"The biggest reason to prefer the remodeling is a relatively short period of time (5~6 years) compared to the reconstruction work that takes 8~9 years. In addition, from the perspective that the period of temporary residence is usually 24 months, the necessity of shortening is greater. Also, since the remodeling construction period is approximately 28~35 months on average, the strategies and efforts are needed to make up for the shortening the remodeling construction period. For these reasons, this paper is to develop an estimating model for normal project duration of apartment remodeling project. This model is reflected in the remodeling properties thorugh difference analysis of the new apartment construction project. Demolition works, reinforcement works, extension works are different, so this paper newly defines these construction work’s duration in normal project duraion of remodeling. Case study and experts interviews are used to validate normal project duration. This model can be used to calculate rough construction period each alternatives, and will help a strategic decision making among the stakeholders.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132638452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-03-31DOI: 10.6106/kjcem.2017.18.2.058
Doowon Hawng, O-K. Kwon, Yoon-Ki Choi
The planning for material lifting operations is one of the key processes in high-rise building construction. Several previous studies have used rough calculations by referring to existing practices or establishing a target value for lifting cycle time or operating rate. Therefore, the purpose of this study is to propose a material lifting process optimization method for reducing the lifting cycle time and increasing the operating rate. In this study, we improve the cyclic operation network (CYCLONE) modeling method that considers the duration and zone information of each work task. This method can be used to hand over work tasks to another crew group in the work process. According to this methodology, this study optimizes the material lifting process, performs a sensitivity analysis, and evaluates the field applicability of the proposed material lifting process optimization method. Therefore, the optimized process was then applied to a high-rise building construction site. The lifting work process time and operating rate for the simulated asis lifting process data, optimized process data, and field application result data were compared for each lifting height. From this comparison, the effectiveness of the optimization methodology was confirmed.
{"title":"Lifting Work Process Optimization Method in High-rise Building Construction Through Improvement of CYCLONE Modeling Method","authors":"Doowon Hawng, O-K. Kwon, Yoon-Ki Choi","doi":"10.6106/kjcem.2017.18.2.058","DOIUrl":"https://doi.org/10.6106/kjcem.2017.18.2.058","url":null,"abstract":"The planning for material lifting operations is one of the key processes in high-rise building construction. Several previous studies have used rough calculations by referring to existing practices or establishing a target value for lifting cycle time or operating rate. Therefore, the purpose of this study is to propose a material lifting process optimization method for reducing the lifting cycle time and increasing the operating rate. In this study, we improve the cyclic operation network (CYCLONE) modeling method that considers the duration and zone information of each work task. This method can be used to hand over work tasks to another crew group in the work process. According to this methodology, this study optimizes the material lifting process, performs a sensitivity analysis, and evaluates the field applicability of the proposed material lifting process optimization method. Therefore, the optimized process was then applied to a high-rise building construction site. The lifting work process time and operating rate for the simulated asis lifting process data, optimized process data, and field application result data were compared for each lifting height. From this comparison, the effectiveness of the optimization methodology was confirmed.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117076997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-03-31DOI: 10.6106/KJCEM.2017.18.2.099
Wooyong Jung, Baul Lee, S. Han
{"title":"A Performance Analysis of Risk Management for International Engineering Project","authors":"Wooyong Jung, Baul Lee, S. Han","doi":"10.6106/KJCEM.2017.18.2.099","DOIUrl":"https://doi.org/10.6106/KJCEM.2017.18.2.099","url":null,"abstract":"","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125202309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-03-31DOI: 10.6106/KJCEM.2017.18.2.003
SungHoon Nam, KyungRai Kim
: Aging buildings over 15 years reaches about 74% of 177 thousand buildings in Domestic public buildings. Due to the aging building, the energy loss is a serious problem. In order to reduce the energy usage through improving the energy efficiency on the existing buildings, the government & the local autonomous entity conduct the energy efficiency projects through the remodeling, repairing & equipment replacement on the existing buildings. The green remodeling is applied to the existing public buildings in recently revised the act on the creation and support of green building. However, the standard is not obvious that the work scope of green remodeling, financing and project delivery method. This paper propose is to suggest project delivery system for vitalizing the green remodeling. Green remodeling is defined on basis of the occurring work under project life cycle based on the existing building process and the financing method for owners and companies and the project delivery system according to work scope of green remodeling are proposed in this paper
{"title":"The Study on the Project Delivery System for Vitalizing the Green Remodeling","authors":"SungHoon Nam, KyungRai Kim","doi":"10.6106/KJCEM.2017.18.2.003","DOIUrl":"https://doi.org/10.6106/KJCEM.2017.18.2.003","url":null,"abstract":": Aging buildings over 15 years reaches about 74% of 177 thousand buildings in Domestic public buildings. Due to the aging building, the energy loss is a serious problem. In order to reduce the energy usage through improving the energy efficiency on the existing buildings, the government & the local autonomous entity conduct the energy efficiency projects through the remodeling, repairing & equipment replacement on the existing buildings. The green remodeling is applied to the existing public buildings in recently revised the act on the creation and support of green building. However, the standard is not obvious that the work scope of green remodeling, financing and project delivery method. This paper propose is to suggest project delivery system for vitalizing the green remodeling. Green remodeling is defined on basis of the occurring work under project life cycle based on the existing building process and the financing method for owners and companies and the project delivery system according to work scope of green remodeling are proposed in this paper","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122837452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-03-31DOI: 10.6106/KJCEM.2017.18.2.021
Lee Kanghyeok, Joohee Park, Hojun Kang, Do Hyoung Shin
: Recently, with having a great interest of the general public for the AR (Augmented Reality) technology, there have been lots of study to improve efficiency of a construction equipment with applying the AR technology to a construction equipment. The clear extrinsic calibration is essential to applying AR technology at the construction site without any error which came from superimposition between ‘Real world’ and ‘Virtual world’. However, on the construction site, the clear extrinsic calibration is not possible, because of lack of time and budget for the specific survey, also, the huge error of the outdoor tracking system such as gyro, GPS system and so on. In this study, we do research about seamless superposition with unclear extrinsic calibration and the image process method for making AR navigator operating in the excavator. Based on this study, we figure that we can fully develop the AR navigator for the excavator. Furthermore, thereby operating AR navigator at many construction sites, we expect that the efficiency of the excavator will be improved. In addition, we can develop AR navigator for not only a excavator but all about construction equipment.
{"title":"Seamless Superimposition Technique of Virtual Objects for AR System of Excavator Based on Image Processing","authors":"Lee Kanghyeok, Joohee Park, Hojun Kang, Do Hyoung Shin","doi":"10.6106/KJCEM.2017.18.2.021","DOIUrl":"https://doi.org/10.6106/KJCEM.2017.18.2.021","url":null,"abstract":": Recently, with having a great interest of the general public for the AR (Augmented Reality) technology, there have been lots of study to improve efficiency of a construction equipment with applying the AR technology to a construction equipment. The clear extrinsic calibration is essential to applying AR technology at the construction site without any error which came from superimposition between ‘Real world’ and ‘Virtual world’. However, on the construction site, the clear extrinsic calibration is not possible, because of lack of time and budget for the specific survey, also, the huge error of the outdoor tracking system such as gyro, GPS system and so on. In this study, we do research about seamless superposition with unclear extrinsic calibration and the image process method for making AR navigator operating in the excavator. Based on this study, we figure that we can fully develop the AR navigator for the excavator. Furthermore, thereby operating AR navigator at many construction sites, we expect that the efficiency of the excavator will be improved. In addition, we can develop AR navigator for not only a excavator but all about construction equipment.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"269 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114014270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-03-31DOI: 10.6106/KJCEM.2017.18.2.030
Jeong Kichang, Jae-Seob Lee
{"title":"Improvement of the Calculation Standard for Prolongation cost of Long-term Continuing Contracts Construction Project","authors":"Jeong Kichang, Jae-Seob Lee","doi":"10.6106/KJCEM.2017.18.2.030","DOIUrl":"https://doi.org/10.6106/KJCEM.2017.18.2.030","url":null,"abstract":"","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116175184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-03-31DOI: 10.6106/KJCEM.2017.18.2.038
Jinwoo Kim, Hyun-soo Lee, Moonseo Park, Nahyun Kwon
Finding causes of workers’ unsafe behaviors is important to prevent construction accidents because 80 percent of accidents occur by workers’ unsafe behaviors. In this regard, this research aims to investigate possible reasons of workers’ unsafe behaviors based on workers’ cognitive process model using System dynamics. This study is based on two ways of workers’ cognitive process which are in relation to hazard perception and failure of hazard perception. Based on existing literature, causal loops for workers’ cognitive process are developed to explain workers’ habituation by staying out of accidents, safety learning by experience, failure of hazard perception, and attitude change by accidents. The interactions between the developed loops provide managerial insights to reduce workers’ unsafe behaviors from a safety manager’s perspective including increasing the probability of workers’ hazard perception through knowledge management, maintaining workers’ positive attitude toward safety, and controlling first-line supervisors to eliminate workers’ unsafe behavior. The research allows us to better understand the causes and solutions of workers’ unsafe behaviors in workers’ cognitive perspectives.
{"title":"A System Dynamics Approach for Modeling Cognitive Process of Construction Workers'Unsafe Behaviors","authors":"Jinwoo Kim, Hyun-soo Lee, Moonseo Park, Nahyun Kwon","doi":"10.6106/KJCEM.2017.18.2.038","DOIUrl":"https://doi.org/10.6106/KJCEM.2017.18.2.038","url":null,"abstract":"Finding causes of workers’ unsafe behaviors is important to prevent construction accidents because 80 percent of accidents occur by workers’ unsafe behaviors. In this regard, this research aims to investigate possible reasons of workers’ unsafe behaviors based on workers’ cognitive process model using System dynamics. This study is based on two ways of workers’ cognitive process which are in relation to hazard perception and failure of hazard perception. Based on existing literature, causal loops for workers’ cognitive process are developed to explain workers’ habituation by staying out of accidents, safety learning by experience, failure of hazard perception, and attitude change by accidents. The interactions between the developed loops provide managerial insights to reduce workers’ unsafe behaviors from a safety manager’s perspective including increasing the probability of workers’ hazard perception through knowledge management, maintaining workers’ positive attitude toward safety, and controlling first-line supervisors to eliminate workers’ unsafe behavior. The research allows us to better understand the causes and solutions of workers’ unsafe behaviors in workers’ cognitive perspectives.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122687828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-03-31DOI: 10.6106/KJCEM.2017.18.2.071
Wooyong Jung, Baul Lee, S. Han
: In recent years, the reduction of international award and project loss by Korean contractors have become a big issue not only in industry but also in academic fields. However, many researches have not focused on small and medium subcontractors but on the large contractors, even though the number of international project by small and medium companies is more than by large companies. Therefore, this study focuses on analyzing the predicted risk before bid and the actual risk after award in international subcontracting projects. In addition, it provides the difference between project performances according to the contract types and the project profitability. This study is expected to give more informed risk knowledge to small and medium subcontractors, which enables them to pay attention to managing risk for better project performances.
{"title":"A Performance Analysis of Risk Management for International Construction Project Conducted by Small & Medium Subcontractors","authors":"Wooyong Jung, Baul Lee, S. Han","doi":"10.6106/KJCEM.2017.18.2.071","DOIUrl":"https://doi.org/10.6106/KJCEM.2017.18.2.071","url":null,"abstract":": In recent years, the reduction of international award and project loss by Korean contractors have become a big issue not only in industry but also in academic fields. However, many researches have not focused on small and medium subcontractors but on the large contractors, even though the number of international project by small and medium companies is more than by large companies. Therefore, this study focuses on analyzing the predicted risk before bid and the actual risk after award in international subcontracting projects. In addition, it provides the difference between project performances according to the contract types and the project profitability. This study is expected to give more informed risk knowledge to small and medium subcontractors, which enables them to pay attention to managing risk for better project performances.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132783387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：