Study on the success criteria of large-scale public sector development projects based on whole life cycle

MSIE 2011 ◽  
2011 ◽  
Author(s):  
Tu Wenjuan ◽  
Zhao Lei
2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Jia Wu

PurposeThe study shows that with the progress of building technologies and building materials, the scale of buildings has increased. But in earthquake-prone areas, large-scale buildings mean higher risks; therefore improving the seismic capacity of buildings is an important measure to reduce the risk of buildings.Design/methodology/approachIn this study, the isolation structure of buildings was introduced briefly, and the cost-benefit based optimization model of the isolation structure was constructed. The optimization of the isolation structure was carried out from the perspective of benefit analysis. Then, two buildings with the same structure were analyzed as examples. One kept the original isolation structure, and the other optimized the isolation structure with the optimization model.FindingsThe final results showed that the optimized isolation structure had a lower input cost ratio, i.e. it had a higher benefit in the same whole life cycle, and the expected loss cost of the structure produced in the same life cycle was lower.Originality/valueIn conclusion, the optimization model of the isolated structure based on benefit analysis can effectively improve the benefit of building isolation structure produced in the whole life cycle.


2021 ◽  
Vol 276 ◽  
pp. 02026
Author(s):  
Houjie Qiu

With the rapid development of information technology, unmanned aerial vehicle (UAV), as a new and popular technology, has also been tried in the field of engineering construction. In this paper, through the application of UAV technology in Australia's large-scale project to extinguish mountain fire, the application effect of UAV in the whole life cycle of engineering construction project is analogized. UAV assisted project progress, management quality and safety and other aspects, so that managers can timely and efficiently understand the situation of the project site, and effectively improve the management's control over the project construction, indicating the future application prospect of UAV technology in the construction field.


2011 ◽  
Vol 201-203 ◽  
pp. 1033-1036
Author(s):  
De Yuan Li ◽  
Wei Li

Remanufacturing of food processing equipments not only follows the demand of transforming economic growth mode, but also has great significance to China sustainable development that needs less investment and gets higher benefit. The remanufacturing approach of large-scale food processing equipments is analyzed in design requirements, including hygiene requirements, energy consumption requirements, reliability requirements and man - machine integration requirements. Then, technical and economic analysis of the remanufacturing is carried out through establishing the profit objective function: Whole life cycle profits Ez= R(multiple life cycle revenue)- C(whole life cycle cost). According to economic evaluation of life cycle and multi-life-cycle, remanufacturing of LEF can get best enterprise benefits and enhance the competitive power of enterprises.


2021 ◽  
Author(s):  
◽  
Shanshan Shen

<p>Since the Great Exhibition of 1851, the exhibition industry has grown steadily in significance. As a result, this thesis argues that associated large environmental impacts have emerged invisibly. Because they are invisible, these impacts have not been paid adequate attention. Few relevant studies have attempted to investigate the consequence of the impacts of expositions and especially current “sustainable” expositions. This thesis investigates the whole life cycle energy use, carbon footprint and ecological footprint of large-scale exhibitions in terms of the contributing factors, including exhibition buildings, visitor-related transportation, and exhibition-related economic aspects. The aim of this research is to determine, within this scope, the environmental impact of large-scale exhibitions and define what a real sustainable exposition and sustainable exhibition building might be. More specially, it creates an appropriate and specific methodology for assessing the environmental impacts generated from exhibition-related factors.  A mixed methods research approach through integration of Life Cycle Analysis and Ecological Footprint Analysis is used. This is to account for whole life cycle energy and resource use and the resulting environmental impacts generated from exhibition buildings (over the construction, operation, maintenance, and demolition phases), different transport modes for visitor travel, and the exhibition-related economic aspect of four case studies. These are the Great Exhibition of 1851 in London, the National Exhibition in Shanghai, Expo 2000 in Hannover, and Expo 2010 in Shanghai. The results of comparative analysis confirm that the total energy and resource consumption of large-scale exhibitions is increasing. The exhibition-related economic aspects consumed most energy and resources, and these rise in relation to the number of visitors, especially visitors from outside the host city. For visitor travel, the choice of visitor transport modes can significantly affect the overall environmental impact. Foreign visitors going to expos by airplane lead to more energy usage than the average travel energy consumption for an expo. For local travelling, using public transport modes can effectively help to reduce energy and resource usage in host cities. For buildings, using the hightech approach currently does little to mitigate the energy and resource usage of large expo pavilions. Due to the short useful life, current sustainable exhibition buildings do not perform as well as their designers imagined. Therefore, the energy flow of sustainable exhibition buildings as influenced by actual useful life needs to be paid more attention in the process of environmental assessment.  Furthermore, it is proposed that the assessment method developed in this research can be used to evaluate the impacts of large-scale events, similar to expositions, on the environment in terms of their energy and resource consumption. The results suggest that the analysis boundary for assessment of event-related environmental impacts needs to be the “whole life cycle” and it needs to be broadened for the environmental assessment of large-scale exhibitions to include not just exhibition buildings, but visitor travel (local and international travel), and event-related economic aspects.</p>


2018 ◽  
Vol 170 ◽  
pp. 01015 ◽  
Author(s):  
Elena Gusakova

Conceptual planning and implementation of large-scale real estate development projects is one of the most difficult tasks in the organization of construction. In the Russian practice, a large experience of development, complex reorganization and redevelopment of large development areas is accumulated. The methodological basis for solving similar problems is the organizational and technological genesis, which considers the development of the project during the full life cycle. An analysis of this experience allows us to talk about the formation of new and effective approaches and methods within the organizational and technological genesis. Among them, the most significant and universal approaches should be highlighted: The concept of real estate development, which explains the reasons and objective needs for project transformations during its life cycle, as well as to increase the adaptive capabilities of design decisions and the project's suitability for the most likely future changes; Development project of joint action, which is based on the balance of interests of project participants; Master planning of the life cycle stages of the project and subprojects, based on the rethinking of the theory and methods of the construction organization, and allowing rationally localized construction sites and related subprojects, while retaining the remaining development and development area beyond of the negative effect of construction for comfortable living and work.


2020 ◽  
Vol 12 (2) ◽  
pp. 685 ◽  
Author(s):  
Baoquan Cheng ◽  
Jingwei Li ◽  
Vivian W. Y. Tam ◽  
Ming Yang ◽  
Dong Chen

Exiting green building assessment standards sometimes cannot work well for large-scale public buildings due to insufficient attention to the operation and maintenance stage. This paper combines the theory of life cycle assessment (LCA) and building information modeling (BIM) technology, thereby proposing a green building assessment method by calculating the greenhouse gas emissions (GGE) of buildings from cradle to grave. Life cycle GGE (LCGGE) can be divided into three parts, including the materialization stage, the operation and maintenance stage, and the demolition stage. Two pieces of BIM software (Revit and Designbuilder) are applied in this study. A museum in Guangdong, China, with a hot summer and warm winter is selected for a case study. The results show that BIM can provide a rich source of needed engineering information for LCA. In addition, the operation and maintenance stage plays the most important role in the GGE reduction of a building throughout the whole life cycle. This research contributes to the knowledge body concerning green buildings and sustainable construction. It helps to achieve the reduction of GGE over the whole life cycle of a building. This is pertinent to contractors, homebuyers, and governments who are constantly seeking ways to achieve a low-carbon economy.


2008 ◽  
Vol 39 (1) ◽  
pp. 72-84 ◽  
Author(s):  
Do Ba Khang ◽  
Tun Lin Moe

The paper presents a new conceptual model for not-for-profit international development projects that identifies different sets of success criteria and factors in the project life-cycle phases and then provides the dynamic linkages among these criteria and factors. The model can serve as a basis to evaluate the project status and to forecast the results progressively throughout the stages. Thus, it helps the project management team and the key stakeholders prioritize their attention and scarce development resources to ensure successful project completion. Empirical data from a field survey conducted in selected Southeast Asian countries confirm the model's validity and also illustrate important managerial implications.


Author(s):  
yinghong yu ◽  
Xiao Liu ◽  
jun li ◽  
Yishou Wang ◽  
xinlin qing

Abstract The vacuum-assisted resin infusion (VARI) technique provides considerable advantages in manufacturing large-scale composite structures. An accurate and consecutive structural health monitoring system is urgently required to determine the initial quality and assess the structural integrity of a composite structure. In this paper, a real-time active smart diagnostic system (SDS) based on piezoelectric sensor network is proposed to monitor the whole life-cycle of composite structures. Experiments were conducted on carbon fiber reinforced plastic (CFRP) specimens with different thicknesses to investigate the monitoring capability of piezoelectric lead-zirconate-titanate (PZT) sensors used in the SDS approach. The PZT sensor networks inserted inside the composite structures during the VARI process are used to monitor not only the curing parameters, but also the health status of composite structures when they are in service after curing. To monitor the curing process only, the sensor network can also be installed on the bottom of the mould. Experimental results demonstrate that both three-dimensional resin flow and degree of cure (DOC) in the VARI process can be effectively monitored by the PZT sensor network. Meanwhile, the embedded PZT sensor network has the potential to identify the different stages in the curing process. It is obvious that the piezoelectric sensor network will provide important technical support for composite materials with the structure and function integrated.


2013 ◽  
Vol 572 ◽  
pp. 107-110 ◽  
Author(s):  
Zhen Shang ◽  
Shi Fan Zhu ◽  
Chang Hua Qiu

It has considerably practical significance to apply Man-Machine-Environment System Engineering (MMESE) on large scale vessel throughout its whole life cycle. At present, there are not too many researches on this topic in China, but specific tasks refer to a really wide range while developing separately without guidance from the very top. From the views of vessel system, life cycle system of it and MMESE discipline system, the MMESE application system for vessel is constructed; based on it and System Engineering, the three dimension application model for vessel throughout its life cycle is brought forth; based on it and Concurrent Engineering, the concept and framework of MMESE Application System Engineering throughout Life Cycle of Large Scale Vessel (MLM) is finally developed, which plays an important role in conducting actual projects.


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