Project buffer sizing of a critical chain based on comprehensive resource tightness

Zhang, Junguang; Song, Xiwei; Díaz, Estrella

doi:10.1016/j.ejor.2015.07.009

Cited by 48 publications

(29 citation statements)

References 30 publications

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“…Additionally, rework model assumptions and the principle of design criticality have been adjusted to adapt to reality. Zhang et al [56] have also taken effort to combine CCPM with DSM. A more reasonable buffer sizing method considering information resource tightness is proposed to better reflect the relationships between activities and improve the accuracy of project buffer (PB) calculation.…”

Section: Rework Management With Technical Methodsmentioning

confidence: 99%

A Novel Method of Developing Construction Projects Schedule under Rework Scenarios

et al. 2019

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Construction projects have faced serious schedule delays caused by rework risks. However, it appears that traditional methods are of limited value in developing applicable project schedules. This study presents an analysis on construction projects schedule development under rework scenarios by a novel method named the improved critical chain design structure matrix (CCDSM). Research data are collected from a real estate development project in China. As a result, predictions of project completion duration and probability have been made. A reliable schedule considering information interactions has been developed and visualized. Rework impact areas of activities have been examined to quantitatively record the impact on project duration. To meet different demands, the method generates two more schedules setting different rework buffers. Furthermore, these activities have the potential of causing rework and have been quantified based on the calculation of two criticalities, providing an identification of rework-intensive works that should be payed close importance to, which have not be realized by previous methods. The results proved the feasibility and effectiveness of this method in developing a schedule for construction projects disturbed by rework, helping practitioners adopt measures to avoid rework-caused schedule delays and achieve sustainable development of such projects.

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Section: Rework Management With Technical Methodsmentioning

confidence: 99%

A Novel Method of Developing Construction Projects Schedule under Rework Scenarios

et al. 2019

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“…Based on these theoretical foundations, some new ideas and other buffer sizing methods were also proposed (Hu et al 2016;Kolb and Göttlich 2015;Kuo and Lu 2013). Zhang, Song, and Díaz (2016) proposed to use the concept of comprehensive resource tightness to improve the buffer sizing method.…”

Section: Ccpm and Project Buffermentioning

confidence: 99%

Critical chain project buffer sizing based on resource constraints

Zhang

Song

Díaz

2016

International Journal of Production Research

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Project scheduling is a complex process involving many types of resources and activities that require optimisation. The resource-constrained project scheduling problem is one of the well-known problematic issues when project activities have to be scheduled to minimise the project duration. Consequently, several methods have been proposed for adjusting the buffer size but none of these traditional methods consider buffer sizing accuracy based on resource constraints. The purpose of this paper is to develop a buffer sizing method based on a fuzzy resource-constrained project scheduling problem in order to obtain an appropriate proportionality between the activity duration and the buffer size. Specifically, a comprehensive resource-constrained method that considers both the general average resource constraints (GARC) and the highest peak of resource constraints (HPRC) is proposed in order to obtain a new buffer sizing method. This paper contributes to the research by considering several different aspects. First, this paper adopts a fuzzy method to calculate and obtain the threshold amount. Second, this paper discusses the resource levelling problem and proposes the HPRC method. Third, the proposed method uses a fuzzy quantitative model to calculate the resource requirement. The findings indicate that the project achieved higher efficiency, providing effective protection and an appropriate buffer size.

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“…Based on project risk, dynamic manual deviation monitoring, and model control, Zhang et al [45] proposed the effort buffer to improve the accuracy and realize dynamic management in IT projects. In addition, Zhang et al [46] measured the influence of complex resource tightness on project buffer size in the DSM framework, triggering further research on buffer size.…”

Section: Rework Management With Ccpmmentioning

confidence: 99%

A Critical Design Structure Method for Project Schedule Development under Rework Risks

et al. 2019

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In order to overcome the difficulty in quantifying rework by traditional project schedule management tools, this study proposes an innovative method, namely improved Critical Chain Design Structure Matrix (ICCDSM). From the perspective of information flow, the authors firstly make assumptions on activity parameters and interactions between activities. After that, a genetic algorithm is employed to reorder the activity sequence, and a banding algorithm with consideration of resource constraints is used to identify concurrent activities. Then potential criticality is proposed to measure the importance of each activity, and the rework impact area is implicated to indicate potential rework windows. Next, two methods for calculating project buffer are employed. A simulation methodology is used to verify the proposed method. The simulation results illustrate that the ICCDSM method is capable of quantifying and visualizing rework and its impact, decreases iterations, and improves the completion probability. In this vein, this study provides a novel framework for rework management, which offers some insights for researchers and managers.

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Project buffer sizing of a critical chain based on comprehensive resource tightness

Cited by 48 publications

References 30 publications

A Novel Method of Developing Construction Projects Schedule under Rework Scenarios

A Novel Method of Developing Construction Projects Schedule under Rework Scenarios

Critical chain project buffer sizing based on resource constraints

A Critical Design Structure Method for Project Schedule Development under Rework Risks

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