建筑信息模型(Building Information Modeling, BIM)是集成了工程物理特征、功能特性和管理要素的工程全要素数字信息化模型,提供了建筑工程可视化和量化分析的可能性,进而能大大提高工程施工及管理效率。同时,BIM可实现以工程数字化为...建筑信息模型(Building Information Modeling, BIM)是集成了工程物理特征、功能特性和管理要素的工程全要素数字信息化模型,提供了建筑工程可视化和量化分析的可能性,进而能大大提高工程施工及管理效率。同时,BIM可实现以工程数字化为核心的工程全生命期管理,为水利工程建设提供新的技术,为水利提质增效和创新发展带来机会。展开更多
Sustainable performance is expected to become a major factor when examining the feasibility of a construction project in terms of its life cycle performance. The study on which this paper is based developed a simulati...Sustainable performance is expected to become a major factor when examining the feasibility of a construction project in terms of its life cycle performance. The study on which this paper is based developed a simulation model, using system dy- namics methodology, to assess the sustainable performance of projects. Three major factors are used to examine project sus- tainable performance (PSP): the sustainability of economic development (E), the sustainability of social development (S), and the sustainability of environmental development (En). Sustainable development ability (SDA) was used as a prototype to evaluate the degree of sustainable performance. The simulation software ‘ithink’ was used to help with the application of the model to a real life case. This paper explains and demonstrates the procedures used to develop the model and finally offers an approach for assessing the feasibility of a construction project in terms of its sustainable performance.展开更多
LCM （life cycle management） is a systematic approach, mindset and culture that considers economic, social, and environmental factors among other factors in the decision making process throughout various business or ...LCM （life cycle management） is a systematic approach, mindset and culture that considers economic, social, and environmental factors among other factors in the decision making process throughout various business or organizational decisions that affect both inputs and outputs of a product or service life cycle. It is a product, process, or activity management system aimed at minimizing environmental and socio-economic burdens associated with an organization＇s product or process during its entire life cycle and value chain. LCM＇s application is gaining wider acceptance both in the corporate and governmental organizations as an approach to reduce ecological footprints and to improve the sustainability of human activities. But where and how can it be used in agricultural engineering applications？ This study highlights the potential areas of LCM application in agricultural and allied sectors and how it can be utilized. The study revealed that LCM tools such as design for environment and life cycle analysis can be used to evaluate the environmental impacts of-and to improve the products, equipment, and structures produced by biosystems engineers as well as the processes used to generate them.展开更多
Based on advanced computer technology, internet of things （lOT） technology, project management con- cept and professional technology and combined with the innovative theories, methods and techniques in earlier hy- d...Based on advanced computer technology, internet of things （lOT） technology, project management con- cept and professional technology and combined with the innovative theories, methods and techniques in earlier hy- dropower projects, the life-cycle risk management system of high earth-rock dam project for Nuozhadu project was developed. The system mainly includes digital dam, three-dimensional design, construction quality monito- ring, safety assessment and warning, etc, to integrally manage and analyze the dam design, constructional quality and safety monitoring information. It realized the dynamic updates of the comprehensive information and the safe- ty quality monitoring in the project life cycle, and provided the basic platform for the scientific management of the construction and operation safety of high earth-rock dam. Application in Nuozhadu earth-rock dam showed that construction safety monitoring and warning greatly helped accelerate the construction progress and improve project quality, and provided a new way for the quality safety control of high earth-rock dam.展开更多
With the rapid development of construction engineering and municipal engineering in recent years, water supply and drainage technology has gradually matured. Building water supply and drainage design contains the desi...With the rapid development of construction engineering and municipal engineering in recent years, water supply and drainage technology has gradually matured. Building water supply and drainage design contains the design of rainwater drainage, sewage drainage design, water supply design and fire water supply design. At present, the research on the life cycle assessment of urban drainage system is mainly focused on the sewage treatment plant, therefore in this paper we introduce the theoretical basis of life cycle assessment. In the era of information network, building information model（BIM） technology is widely applied to the design of building water supply and drainage, which and effectively improves the design effi ciency, and makes up for the traditional water supply and drainage design of a lot of problems. In this paper, we analyze the development trend of water supply and drainage engineering based on life cycle assessment and building information model.展开更多
The environmental impact during the preparation of coffee beverages was evaluated on real time. The functional unit is a cup of coffee prepared from 7 g of ground coffee and 125 mL of tap water. The boundaries system ...The environmental impact during the preparation of coffee beverages was evaluated on real time. The functional unit is a cup of coffee prepared from 7 g of ground coffee and 125 mL of tap water. The boundaries system considered are assembly process, electricity process, tap water process, coffee process and municipal waste process. Based on boundary system, the life cycle inventory is carbon dioxide, 50.31 g; coal, brown, 53.72 rag; coal hard, 0.9906 g; dinitrogen monoxide, 0.9575 mg; natural gas, 0.0020 m^3; methane, fossil, 13.82 mg; oil, crude, 1.012 g; uranium, 15.02 ug. The life cycle impact assessment is determined using the sum of the contributions of the impacts shown in the inventory analysis, each one multiplied by a coefficient called the ＂characterization factor＂, which indicates the scale of the potential contributed by the individual substance to the effect. The results show the advantages of using the LCA （life cycle assessment） on real time as it provides information from both quality and environmental parameters allowing taking actions based on timely information. The preparation of a cup of coffee produced an environmental load of 50.9 g of CO2 equivalents and Non Renewable energy equivalents to 151 kJ; the sugar process and materials transportation were not considered.展开更多
文摘建筑信息模型(Building Information Modeling, BIM)是集成了工程物理特征、功能特性和管理要素的工程全要素数字信息化模型,提供了建筑工程可视化和量化分析的可能性,进而能大大提高工程施工及管理效率。同时,BIM可实现以工程数字化为核心的工程全生命期管理,为水利工程建设提供新的技术,为水利提质增效和创新发展带来机会。
基金Project supported by the Research Grant Council of Hong Kong,China
文摘Sustainable performance is expected to become a major factor when examining the feasibility of a construction project in terms of its life cycle performance. The study on which this paper is based developed a simulation model, using system dy- namics methodology, to assess the sustainable performance of projects. Three major factors are used to examine project sus- tainable performance (PSP): the sustainability of economic development (E), the sustainability of social development (S), and the sustainability of environmental development (En). Sustainable development ability (SDA) was used as a prototype to evaluate the degree of sustainable performance. The simulation software ‘ithink’ was used to help with the application of the model to a real life case. This paper explains and demonstrates the procedures used to develop the model and finally offers an approach for assessing the feasibility of a construction project in terms of its sustainable performance.
文摘LCM （life cycle management） is a systematic approach, mindset and culture that considers economic, social, and environmental factors among other factors in the decision making process throughout various business or organizational decisions that affect both inputs and outputs of a product or service life cycle. It is a product, process, or activity management system aimed at minimizing environmental and socio-economic burdens associated with an organization＇s product or process during its entire life cycle and value chain. LCM＇s application is gaining wider acceptance both in the corporate and governmental organizations as an approach to reduce ecological footprints and to improve the sustainability of human activities. But where and how can it be used in agricultural engineering applications？ This study highlights the potential areas of LCM application in agricultural and allied sectors and how it can be utilized. The study revealed that LCM tools such as design for environment and life cycle analysis can be used to evaluate the environmental impacts of-and to improve the products, equipment, and structures produced by biosystems engineers as well as the processes used to generate them.
文摘Based on advanced computer technology, internet of things （lOT） technology, project management con- cept and professional technology and combined with the innovative theories, methods and techniques in earlier hy- dropower projects, the life-cycle risk management system of high earth-rock dam project for Nuozhadu project was developed. The system mainly includes digital dam, three-dimensional design, construction quality monito- ring, safety assessment and warning, etc, to integrally manage and analyze the dam design, constructional quality and safety monitoring information. It realized the dynamic updates of the comprehensive information and the safe- ty quality monitoring in the project life cycle, and provided the basic platform for the scientific management of the construction and operation safety of high earth-rock dam. Application in Nuozhadu earth-rock dam showed that construction safety monitoring and warning greatly helped accelerate the construction progress and improve project quality, and provided a new way for the quality safety control of high earth-rock dam.
文摘With the rapid development of construction engineering and municipal engineering in recent years, water supply and drainage technology has gradually matured. Building water supply and drainage design contains the design of rainwater drainage, sewage drainage design, water supply design and fire water supply design. At present, the research on the life cycle assessment of urban drainage system is mainly focused on the sewage treatment plant, therefore in this paper we introduce the theoretical basis of life cycle assessment. In the era of information network, building information model（BIM） technology is widely applied to the design of building water supply and drainage, which and effectively improves the design effi ciency, and makes up for the traditional water supply and drainage design of a lot of problems. In this paper, we analyze the development trend of water supply and drainage engineering based on life cycle assessment and building information model.
文摘The environmental impact during the preparation of coffee beverages was evaluated on real time. The functional unit is a cup of coffee prepared from 7 g of ground coffee and 125 mL of tap water. The boundaries system considered are assembly process, electricity process, tap water process, coffee process and municipal waste process. Based on boundary system, the life cycle inventory is carbon dioxide, 50.31 g; coal, brown, 53.72 rag; coal hard, 0.9906 g; dinitrogen monoxide, 0.9575 mg; natural gas, 0.0020 m^3; methane, fossil, 13.82 mg; oil, crude, 1.012 g; uranium, 15.02 ug. The life cycle impact assessment is determined using the sum of the contributions of the impacts shown in the inventory analysis, each one multiplied by a coefficient called the ＂characterization factor＂, which indicates the scale of the potential contributed by the individual substance to the effect. The results show the advantages of using the LCA （life cycle assessment） on real time as it provides information from both quality and environmental parameters allowing taking actions based on timely information. The preparation of a cup of coffee produced an environmental load of 50.9 g of CO2 equivalents and Non Renewable energy equivalents to 151 kJ; the sugar process and materials transportation were not considered.
