Reducing plan variations in delivering sustainable building projects
Reducing plan variations in delivering sustainable building projects
复制标题
减少交付可持续建筑项目的计划变化
DOI：
10.1016/j.jclepro.2014.01.024
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发表时间：
2014
影响因子：
11.1
通讯作者：
Julio J. Ochoa
中科院分区：
文献类型：
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作者：
Julio J. Ochoa
为配合推动可持续发展的使命，可持续建筑实践近年来越来越多地被采用。然而，交付高性能可持续建筑的过程通过增加专业流程导致了更复杂的施工实践。这种复杂性影响了施工顺序和时间安排，导致工作流程多变，估计施工时间和费用超支。在这项研究中，减少计划变化被认为是可持续建筑项目交付过程中的一个关键改进。本研究使用最后计划系统（LPS）开发一个更可靠的生产计划过程，以减少计划的变化。进行了一个案例研究，重点是衡量生产绩效的活动和原因未完成之前和之后LPS实施。查明了与活动生产业绩不佳有关的关键领域。结果表明，与可持续交付成果有关和无关的活动在生产绩效和计划变化原因方面存在差异。虽然生产性能的差异不大，但变异性原因的差异很大。LPS的实施大大减少了计划的变化。随着可变性的减少，活动的生产绩效增加。这项研究的结果有助于可持续建筑项目的有效生产规划过程的替代方法。
In line with promoting the mission of sustainable development, the sustainable building practice has been increasingly adopted in recent years. However, the process of delivering a high performance sustainable building has led to a more complex construction practice through the increment of specialized processes. Such complexities have affected construction sequencing and timing, leading to workflow variability and excess in the estimated construction time and cost. In this study reducing plan variations is considered a key improvement in the delivery process of sustainable building projects. This research used the Last Planner System (LPS) to develop a more reliable production planning process to reduce plan variations. A case study was conducted focusing on the measurement of production performance of activities and the reasons for non-completion before and after LPS implementation. The critical areas relating to poor production performance of activities were identified. Results demonstrated differences in production performance and causes of plan variations between activities in relation to and with no relation to sustainable deliverables. While the difference in the production performance is not considerable, the difference in the causes of variability is significant. The implementation of LPS resulted in a significant reduction of plan variations. As variability decreased, production performance of activities increased. The findings from this study contribute to alternative methods for an effective production planning process for sustainable building projects.