基于虚拟现实的建筑项目可施工性指标

IF 3.1 Q2 CONSTRUCTION & BUILDING TECHNOLOGY Construction Innovation-England Pub Date : 2023-05-26 DOI:10.1108/ci-11-2021-0210
A. Qasem, Abdulaziz S. Almohassen
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引用次数: 0

摘要

目的本研究旨在以承建商的经验和资源为基础,建立一个可施工性指数(CI),以简化项目中的施工活动。提议的CI是一个重要的决策支持工具,它量化了承包商在其他项目要素的偶然性下执行某些活动的困难程度。虚拟现实(VR)技术用于提供额外的数据,传达其他项目元素对特定活动的应急影响,并向承包商提供顺序执行数据。这可以将无法在预算范围内按时执行各种活动的风险降至最低。设计/方法/方法基于vr的CI是通过两个步骤开发的。第一步是通过查阅文献和咨询当地建筑专家,找出影响可施工性的因素。然后通过主因素和子因素的层次结构对这些因素进行组织,并由当地专家通过预先设计的调查进行验证。将各因子分为虚拟现实依赖因子和非虚拟现实独立因子,采用层次分析法计算其相对权重,并采用Cronbach’s alpha法确定其信度。第二步是定义第一步中定义的可施工性因素的属性,使用多属性效用理论来量化承包商对这些因素的遵守程度,并给出适当的分数。通过标准、文献和当地调查获得vr无关因素的效用因子,并按1-10的等级进行量化。然而,使用集成Autodesk Revit和Navisworks软件生成的开发的VR导航环境,对VR相关因素进行相应的评分。相应地,评估每个活动的CI,并通过汇总所有活动的CI来计算项目的总体CI。开发的CI量化了承包商执行建筑项目的能力,并解决了在规划阶段各个施工单位之间缺乏沟通和协调的问题。此外,它可以解决可能的硬(物理)和软(时间)施工冲突,并尽量减少它们对项目进度和预算的影响。在确定的因素的相对权重中,预制建筑构件对可施工性的影响最大。此外,将开发的VR-CI应用于一个实际项目,结果表明,以10分制量化的主要因素的效用值在6 - 9之间,这意味着需要进行日常监督和监测。原创性/价值虽然可建造性和虚拟现实的概念已经在不同的背景下使用,但将它们结合起来为建筑行业开发一个全面的CI是一个独特的贡献,这在以前没有报道过。
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A virtual reality-based constructability index for construction projects
Purpose This study aims to develop a constructability index (CI) that can ease the construction activities in a project based on the contractors’ experience and resources. The proposed CI is a vital decision support tool that quantifies the difficulty level for the contractor to execute certain activities with the contingency of other project elements. The virtual reality (VR) technology was used to provide additional data, communicate the contingency impact of other project elements on specific activities and provide sequential execution data to the contractors. This can minimize the risk of not being able to execute various activities on time and within the budget. Design/methodology/approach The VR-based CI was developed through two steps. Step 1 was to identify the factors affecting constructability by exploring the literature and consulting local construction experts. These factors were then organized through a hierarchy of main factors and subfactors and validated by local experts through predesigned surveys. The factors were classified into VR dependent or non-VR independent, and their relative weights were calculated using the analytical hierarchy process along with their reliability, which was determined using Cronbach’s alpha approach. Step 2 was to define the attributes for the constructability factors defined in Step 1 using the Multi Attribute Utility Theory to quantify the contractor’s compliance level of these factors by giving them the appropriate score. The utility factors for the VR-independent factors were obtained through standards, literature and local surveys, and they were quantified on a 1–10 scale. However, the VR-dependent factors were given their corresponding scores using the developed VR navigation environment generated by integrating Autodesk Revit and Navisworks software. Accordingly, the CI for each activity was evaluated, and the overall CI for the project was calculated by aggregating the CIs for all activities. Findings The developed CI quantifies the contractor’s ability to execute construction projects and addresses the lack of communication and coordination between the various construction units in the planning phase itself. Moreover, it can resolve possible hard (physical) and soft (time) construction clashes and minimize their impacts on project schedule and budget. Among the relative weights of the identified factors, prefabrication of building components was found to have the highest effect on constructability. Furthermore, applying the developed VR-CI, a real project showed that the utility values of the main factors quantified on a ten-point scale were between 6 and 9, which means routine supervisions and monitoring are required. Originality/value Though the concepts of constructability and VR have been used in different contexts, their integration to develop a comprehensive CI for the building construction industry is a unique contribution, which has not been reported previously.
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来源期刊
Construction Innovation-England
Construction Innovation-England CONSTRUCTION & BUILDING TECHNOLOGY-
CiteScore
7.10
自引率
12.10%
发文量
71
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