The Experts below are selected from a list of 14406 Experts worldwide ranked by ideXlab platform
George Q Huang - One of the best experts on this subject based on the ideXlab platform.
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cloud based fleet management for prefabrication transportation
Enterprise Information Systems, 2019Co-Authors: Lizi Luo, Chunhsien Chen, George Q HuangAbstract:Prefabricated Construction heavily relies on the effective transportation of precast components, and efficient prefabrication transportation can benefit the whole Construction process from many asp...
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production lead time hedging and coordination in Prefabricated Construction supply chain management
International Journal of Production Research, 2017Co-Authors: Yue Zhai, Ray Y Zhong, George Q HuangAbstract:This paper studies a coordination scheme to solve a production lead-time hedging (PLTH) issue in the Prefabricated Construction supply chain management. To mitigate tardiness delivery owing to prefab production uncertainty, the project contractor (PC) prefers to inform the prefab factory (PF) an earlier due date which is termed as PLTH strategy. However, this strategy forces the PF to compress its production process. A balance must be optimised through the proposed PLTH coordination scheme. It includes a PLTH-related cost term, i.e. crashing money (charged by the PF to the PC) and a constant transfer term. Three models with different power structures are considered. Firstly, two Stackelberg games with alternative decision-making sequences and an equal power model are discussed to obtain the optimal PLTH amount and crashing money. Later on, a cost-sharing term is used to fairly allocate the system surplus. It is observed that this coordination scheme reduces the PLTH amount and ensures win–win coordination...
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Prefabricated Construction enabled by the Internet-of-Things
Automation in Construction, 2017Co-Authors: Ray Y Zhong, Fan Xue, Geoffrey Qiping Shen, Yi Peng, Ji Fang, Weiwu Zou, Hao Luo, George Q HuangAbstract:Abstract Prefabricated Construction has been used for public rental housing in Hong Kong. In order to speed up housing delivery, Hong Kong Housing Authority (HKHA) have employed advanced technologies, including Building Information Modelling (BIM) and Radio Frequency Identification (RFID), in some of their pilot prefabrication-based Construction projects. However, the information obtained from BIM and RFID is not well connected and shared among relevant stakeholders. This paper introduces a multi-dimensional Internet of Things (IoT)-enabled BIM platform (MITBIMP) to achieve real-time visibility and traceability in Prefabricated Construction. Design considerations of a RFID Gateway Operating System, visibility and traceability tools, Data Source Interoperability Services, and decision support services are specified for developing the MITBIMP. A case study from a real-life Construction project in Hong Kong is used as a pilot project to demonstrate advanced decision-making by using cutting-edge concepts and technologies within the MITBIMP to providing a basis for real-time visibility and traceability of the whole processes of prefabrication-based Construction.
Geoffrey Qiping Shen - One of the best experts on this subject based on the ideXlab platform.
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an internet of things enabled bim platform for on site assembly services in Prefabricated Construction
Automation in Construction, 2018Co-Authors: Clyde Zhengdao Li, Jingke Hong, Xiao Li, Geoffrey Qiping ShenAbstract:Abstract Building Information Modelling (BIM) serves as a useful tool in facilitating the on-site assembly services (OAS) of Prefabricated Construction for its benefits of powerful management of physical and functional digital presentations. However, the benefits of using BIM in the OAS of Prefabricated Construction cannot be cultivated with an incomplete, inaccurate, and untimely data exchange and lack of real-time visibility and traceability. To deal with these challenges, an Internet of Things (IoT)-enabled platform is designed by integrating IoT and BIM for Prefabricated public housing projects in Hong Kong. The demands of the stakeholders were analysed; then smart Construction objects (SCOs) and smart gateway are defined and designed to collect real-time data throughout the working processes of on-site assembly of Prefabricated Construction using the radio frequency identification (RFID) technology. The captured data is uploaded to cloud in real-time to process and analyse for decision support purposes for the involved site managers and workers. Visibility and traceability functions are developed with BIM and virtual reality (VR) technologies, through which managers can supervise the Construction progress and approximate cost information in a real-time manner. The IoT-enabled platform can provide various decision support tools and services to different stakeholders, for improving the efficiency and effectiveness of daily operations, decision making, collaboration, and supervision throughout on-site assembly processes of Prefabricated Construction.
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barriers to promoting Prefabricated Construction in china a cost benefit analysis
Journal of Cleaner Production, 2018Co-Authors: Jingke Hong, Geoffrey Qiping Shen, Boyu Zhang, Wanqiu ZhangAbstract:Abstract Prefabricated Construction has attracted worldwide concern because of its significant role in the creation of sustainable urbanization. In Mainland China, the practice of applying prefabrication technology in the Construction industry still lags behind. In fact, the economic benefit is a key concern of various stakeholders involved in the Construction process and is expected to influence the delivery of Prefabricated buildings significantly. Therefore, this study established a cost–benefit analysis framework to explore the basic cost composition of prefabrication and examined the effect of adopting prefabrication on the total cost of real building projects. Results show that the concrete and steel used in the typical Prefabricated components were responsible for 26% to 60% of the total cost, followed by labor cost (17%–30%) and transportation (10%). The average incremental cost is highly linearly correlated with the prefabrication rate, which ranged from 237 yuan/m2 to 437 yuan/m2, in eight building projects. To fully gain the economic benefits from the precast Construction, the future focus should lie in providing financial support for promoting the development of prefabrication technology, optimizing the structure integrity of Prefabricated buildings, and improving the maturity of the precast market.
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Prefabricated Construction enabled by the Internet-of-Things
Automation in Construction, 2017Co-Authors: Ray Y Zhong, Fan Xue, Geoffrey Qiping Shen, Yi Peng, Ji Fang, Weiwu Zou, Hao Luo, George Q HuangAbstract:Abstract Prefabricated Construction has been used for public rental housing in Hong Kong. In order to speed up housing delivery, Hong Kong Housing Authority (HKHA) have employed advanced technologies, including Building Information Modelling (BIM) and Radio Frequency Identification (RFID), in some of their pilot prefabrication-based Construction projects. However, the information obtained from BIM and RFID is not well connected and shared among relevant stakeholders. This paper introduces a multi-dimensional Internet of Things (IoT)-enabled BIM platform (MITBIMP) to achieve real-time visibility and traceability in Prefabricated Construction. Design considerations of a RFID Gateway Operating System, visibility and traceability tools, Data Source Interoperability Services, and decision support services are specified for developing the MITBIMP. A case study from a real-life Construction project in Hong Kong is used as a pilot project to demonstrate advanced decision-making by using cutting-edge concepts and technologies within the MITBIMP to providing a basis for real-time visibility and traceability of the whole processes of prefabrication-based Construction.
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swot analysis and internet of things enabled platform for prefabrication housing production in hong kong
Habitat International, 2016Co-Authors: Clyde Zhengdao Li, Jingke Hong, Geoffrey Qiping Shen, Xiaoxiao XuAbstract:Abstract Housing has been a major concern in Hong Kong for the past several decades, increasing pressure on the Hong Kong Housing Authority to pursue ambitious housing plans. As a sustainable Construction technology, prefabrication has been increasingly adopted in the delivery of housing plans to alleviate various constraints, such as labor shortage, time, safety, and environmental protection. However, few studies have conducted a strategic analysis of the current situation and planning management of prefabrication housing production (MPHP) in Hong Kong. By performing a strengths, weaknesses, opportunities, and threats (SWOT) analysis, the current study attempts to facilitate a more in-depth understanding of the MPHP development status in housing production in Hong Kong. Data underpinning the SWOT analysis are collected from various channels, including literature review, prefabrication-related regulations, interviews with experts, and government reports. This study provides an opportunity for major stakeholders to perceive the external and internal conditions of prefabrication development in Hong Kong. Internet of Things (IoT)-enabled platform deploying BIM to re-engineer offshore Prefabricated Construction processes, which are proposed based on the identified SWOTs for solving weaknesses and dealing with threats, are significant for improving MPHP in Hong Kong.
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life cycle energy analysis of Prefabricated building components an input output based hybrid model
Journal of Cleaner Production, 2016Co-Authors: Jingke Hong, Geoffrey Qiping Shen, Chao MaoAbstract:As an effective strategy for improving the productivity of the Construction industry, Prefabricated Construction has attracted concerns worldwide. This study investigated the life-cycle energy use of Prefabricated components and the corresponding effect on the total embodied energy use for a number of real building projects. Result showed that the life-cycle energy use of Prefabricated components ranged from 7.33 GJ/m3 for precast staircase to 13.34 GJ/m3 for precast form. The recycling process could achieve 16%–24% energy reduction. This study also found that apart from reusability, energy savings are also obtained from waste reduction and high quality control, saving 4%–14% of the total life-cycle energy consumption. All these advantages can be regarded as important environment friendly strategies provided by precast Construction. The linear regression analysis indicated that the average increment in energy use was nearly linearly correlated with prefabrication rate. Precast facade and form are identified as energy-intensive components compared with the conventional Construction method. Therefore, the challenge lies in improving the integrality and quality of the prefabrication technique while reducing its dependence on energy-intensive materials. Besides, attention should be focused on improving the maturity of the precast market to avoid additional energy consumption during prophase investigation.
Jingke Hong - One of the best experts on this subject based on the ideXlab platform.
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an internet of things enabled bim platform for on site assembly services in Prefabricated Construction
Automation in Construction, 2018Co-Authors: Clyde Zhengdao Li, Jingke Hong, Xiao Li, Geoffrey Qiping ShenAbstract:Abstract Building Information Modelling (BIM) serves as a useful tool in facilitating the on-site assembly services (OAS) of Prefabricated Construction for its benefits of powerful management of physical and functional digital presentations. However, the benefits of using BIM in the OAS of Prefabricated Construction cannot be cultivated with an incomplete, inaccurate, and untimely data exchange and lack of real-time visibility and traceability. To deal with these challenges, an Internet of Things (IoT)-enabled platform is designed by integrating IoT and BIM for Prefabricated public housing projects in Hong Kong. The demands of the stakeholders were analysed; then smart Construction objects (SCOs) and smart gateway are defined and designed to collect real-time data throughout the working processes of on-site assembly of Prefabricated Construction using the radio frequency identification (RFID) technology. The captured data is uploaded to cloud in real-time to process and analyse for decision support purposes for the involved site managers and workers. Visibility and traceability functions are developed with BIM and virtual reality (VR) technologies, through which managers can supervise the Construction progress and approximate cost information in a real-time manner. The IoT-enabled platform can provide various decision support tools and services to different stakeholders, for improving the efficiency and effectiveness of daily operations, decision making, collaboration, and supervision throughout on-site assembly processes of Prefabricated Construction.
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barriers to promoting Prefabricated Construction in china a cost benefit analysis
Journal of Cleaner Production, 2018Co-Authors: Jingke Hong, Geoffrey Qiping Shen, Boyu Zhang, Wanqiu ZhangAbstract:Abstract Prefabricated Construction has attracted worldwide concern because of its significant role in the creation of sustainable urbanization. In Mainland China, the practice of applying prefabrication technology in the Construction industry still lags behind. In fact, the economic benefit is a key concern of various stakeholders involved in the Construction process and is expected to influence the delivery of Prefabricated buildings significantly. Therefore, this study established a cost–benefit analysis framework to explore the basic cost composition of prefabrication and examined the effect of adopting prefabrication on the total cost of real building projects. Results show that the concrete and steel used in the typical Prefabricated components were responsible for 26% to 60% of the total cost, followed by labor cost (17%–30%) and transportation (10%). The average incremental cost is highly linearly correlated with the prefabrication rate, which ranged from 237 yuan/m2 to 437 yuan/m2, in eight building projects. To fully gain the economic benefits from the precast Construction, the future focus should lie in providing financial support for promoting the development of prefabrication technology, optimizing the structure integrity of Prefabricated buildings, and improving the maturity of the precast market.
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swot analysis and internet of things enabled platform for prefabrication housing production in hong kong
Habitat International, 2016Co-Authors: Clyde Zhengdao Li, Jingke Hong, Geoffrey Qiping Shen, Xiaoxiao XuAbstract:Abstract Housing has been a major concern in Hong Kong for the past several decades, increasing pressure on the Hong Kong Housing Authority to pursue ambitious housing plans. As a sustainable Construction technology, prefabrication has been increasingly adopted in the delivery of housing plans to alleviate various constraints, such as labor shortage, time, safety, and environmental protection. However, few studies have conducted a strategic analysis of the current situation and planning management of prefabrication housing production (MPHP) in Hong Kong. By performing a strengths, weaknesses, opportunities, and threats (SWOT) analysis, the current study attempts to facilitate a more in-depth understanding of the MPHP development status in housing production in Hong Kong. Data underpinning the SWOT analysis are collected from various channels, including literature review, prefabrication-related regulations, interviews with experts, and government reports. This study provides an opportunity for major stakeholders to perceive the external and internal conditions of prefabrication development in Hong Kong. Internet of Things (IoT)-enabled platform deploying BIM to re-engineer offshore Prefabricated Construction processes, which are proposed based on the identified SWOTs for solving weaknesses and dealing with threats, are significant for improving MPHP in Hong Kong.
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life cycle energy analysis of Prefabricated building components an input output based hybrid model
Journal of Cleaner Production, 2016Co-Authors: Jingke Hong, Geoffrey Qiping Shen, Chao MaoAbstract:As an effective strategy for improving the productivity of the Construction industry, Prefabricated Construction has attracted concerns worldwide. This study investigated the life-cycle energy use of Prefabricated components and the corresponding effect on the total embodied energy use for a number of real building projects. Result showed that the life-cycle energy use of Prefabricated components ranged from 7.33 GJ/m3 for precast staircase to 13.34 GJ/m3 for precast form. The recycling process could achieve 16%–24% energy reduction. This study also found that apart from reusability, energy savings are also obtained from waste reduction and high quality control, saving 4%–14% of the total life-cycle energy consumption. All these advantages can be regarded as important environment friendly strategies provided by precast Construction. The linear regression analysis indicated that the average increment in energy use was nearly linearly correlated with prefabrication rate. Precast facade and form are identified as energy-intensive components compared with the conventional Construction method. Therefore, the challenge lies in improving the integrality and quality of the prefabrication technique while reducing its dependence on energy-intensive materials. Besides, attention should be focused on improving the maturity of the precast market to avoid additional energy consumption during prophase investigation.
Chao Mao - One of the best experts on this subject based on the ideXlab platform.
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life cycle energy analysis of Prefabricated building components an input output based hybrid model
Journal of Cleaner Production, 2016Co-Authors: Jingke Hong, Geoffrey Qiping Shen, Chao MaoAbstract:As an effective strategy for improving the productivity of the Construction industry, Prefabricated Construction has attracted concerns worldwide. This study investigated the life-cycle energy use of Prefabricated components and the corresponding effect on the total embodied energy use for a number of real building projects. Result showed that the life-cycle energy use of Prefabricated components ranged from 7.33 GJ/m3 for precast staircase to 13.34 GJ/m3 for precast form. The recycling process could achieve 16%–24% energy reduction. This study also found that apart from reusability, energy savings are also obtained from waste reduction and high quality control, saving 4%–14% of the total life-cycle energy consumption. All these advantages can be regarded as important environment friendly strategies provided by precast Construction. The linear regression analysis indicated that the average increment in energy use was nearly linearly correlated with prefabrication rate. Precast facade and form are identified as energy-intensive components compared with the conventional Construction method. Therefore, the challenge lies in improving the integrality and quality of the prefabrication technique while reducing its dependence on energy-intensive materials. Besides, attention should be focused on improving the maturity of the precast market to avoid additional energy consumption during prophase investigation.
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comparative study of greenhouse gas emissions between off site prefabrication and conventional Construction methods two case studies of residential projects
Energy and Buildings, 2013Co-Authors: Liyin Shen, Chao Mao, Qiping Shen, Liyaning TangAbstract:Abstract Greenhouse gas (GHG) emissions in the Construction stage will be more relatively significant over time. Different Construction methods influence GHG emissions in the Construction phase. This study investigates the differences of GHG emissions between prefabrication and conventional Construction methods. This study sets a calculation boundary and five emission sources for the semi-Prefabricated Construction process: embodied emissions of building materials, transportation of building materials, transportation of Construction waste and soil, transportation of Prefabricated components, operation of equipment, and Construction techniques. A quantitative model is then established using a process-based method. A semi-prefabrication project and a conventional Construction project in China are employed for preliminary examination of the differences in GHG emissions. Results show that the semi-prefabrication method produces less GHG emissions per square meter compared with the conventional Construction, with the former producing 336 kg/m2 and the latter generating 368 kg/m2. The largest proportion of total GHG emissions comes from the embodied emissions of building materials, accounting for approximately 85%. Four elements that positively contribute to reduced emissions are the embodied GHG emissions of building materials, transportation of building materials, resource consumption of equipment and techniques, and transportation of waste and soil, accounting for 86.5%, 18.3%, 10.3%, and 0.2%, respectively, of reduced emissions; one a negative effect on reduced emissions is the transportation of Prefabricated components, which offsets 15.3% of the total emissions reduction. Thus, adopting Prefabricated Construction methods contribute to significant environmental benefits on GHG emissions in this initial study.
Fan Xue - One of the best experts on this subject based on the ideXlab platform.
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barriers to building information modeling bim implementation in china s Prefabricated Construction an interpretive structural modeling ism approach
Journal of Cleaner Production, 2019Co-Authors: Tan Tan, Ke Chen, Fan XueAbstract:Abstract It is widely recognized that Building Information Modeling (BIM) can facilitate the delivery of Prefabricated Construction. Nevertheless, the actual practice of BIM faces several barriers. A range of existing studies and literature have discussed these barriers extensively, but two research questions remain unanswered. First, what are the unique barriers facing the use of BIM in China's Prefabricated Construction? Second, how do these barriers interrelate with one another? This research aims to address these two questions. Conducting a two-round literature review and a questionnaire survey ascertained twelve barriers acutely affecting the Chinese experience of applying BIM to Prefabricated Construction. In addition, Interpretive Structural Modeling (ISM) was used to identify interrelationships among these barriers. The exercise found that, compared with the cost-related issues suggested by previous studies that focused on general BIM implementation barriers, the lack of research about BIM in China and the absence of standards and domestic-oriented tools are likely the biggest hindrances to the practical application of BIM in China's Prefabricated Construction. This study contributes to the knowledge body by revealing major barriers to BIM implementation in China's Prefabricated Construction and crafting a corresponding three-level strategy to facilitate the possible implementation. The findings of this study can thus act as a practical reference for future research attempting to provide technological and managerial solutions to improve BIM implementation in China's Prefabricated Construction.
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Prefabricated Construction enabled by the Internet-of-Things
Automation in Construction, 2017Co-Authors: Ray Y Zhong, Fan Xue, Geoffrey Qiping Shen, Yi Peng, Ji Fang, Weiwu Zou, Hao Luo, George Q HuangAbstract:Abstract Prefabricated Construction has been used for public rental housing in Hong Kong. In order to speed up housing delivery, Hong Kong Housing Authority (HKHA) have employed advanced technologies, including Building Information Modelling (BIM) and Radio Frequency Identification (RFID), in some of their pilot prefabrication-based Construction projects. However, the information obtained from BIM and RFID is not well connected and shared among relevant stakeholders. This paper introduces a multi-dimensional Internet of Things (IoT)-enabled BIM platform (MITBIMP) to achieve real-time visibility and traceability in Prefabricated Construction. Design considerations of a RFID Gateway Operating System, visibility and traceability tools, Data Source Interoperability Services, and decision support services are specified for developing the MITBIMP. A case study from a real-life Construction project in Hong Kong is used as a pilot project to demonstrate advanced decision-making by using cutting-edge concepts and technologies within the MITBIMP to providing a basis for real-time visibility and traceability of the whole processes of prefabrication-based Construction.