Cost performance is a concern particularly for Complex multi-stakeholder projects in the form of critical infrastructure. Evidence suggests that critical infrastructure projects in the United Arab Emirates (‘UAE’) experience substantial cost overruns. Cost overruns and its consequences in terms of project failure can lead to substantial negative and unintended consequences on infrastructure project systems, especially noting that it is sector characterized by substantial interrelatedness and interdependence between different projects. For these reasons, understanding the causes and possible solutions to cost overruns as a form of project failure is of paramount importance. To undertake such a study, data were collected through structured questionnaire survey (focused on 44 common factors), of various project stakeholders with analysis focusing on frequency, severity and importance indices. Findings suggest five major reasons leading to cost overruns in UAE infrastructure projects as ‘Delays in decisions making by approval authorities’, ‘Changes in client requirements’, ‘Construction cost underestimation’, ‘Poor site management’ and ‘Frequency of variation orders and additional works’.

对于以关键基础架构形式存在的复杂的多利益相关方项目而言，成本绩效尤其令人担忧。有证据表明，阿拉伯联合酋长国（UAE）的关键基础设施项目存在大量的成本超支。成本超支及其对项目失败的后果可能导致对基础设施项目系统的重大负面和意想不到的后果，尤其要注意的是，该部门的特点是不同项目之间存在重大的相互关联和相互依存。由于这些原因，了解作为项目失败形式的成本超支的原因和可能的解决方案至关重要。为了进行这项研究，我们通过结构化问卷调查收集了数据（重点针对44个共同因素），各种项目涉众的分析，重点是频率，严重性和重要性指数。调查结果表明，导致阿联酋基础设施项目成本超支的五个主要原因是“审批部门的决策延迟”，“客户要求变更”，“建筑成本低估”，“场地管理不佳”和“变更订单和附加工程的频率”。