消除建筑工程设计变更的定量激励机制

设计变更是建筑工程成本超预算的主要原因.国外兴起的集成项目交付（IPD）模式可消除设计变更，主要是因为采用基于IPD原则建立的激励机制使设计阶段就加入项目的施工方积极协助设计方优化设计.在先前的研究中，适应我国建筑工程实际、定性的、基于IPD消除设计变更的激励机制已被建立.概述该定性激励机制，通过分析我国建筑工程施工方和设计方消除设计变更的特征，建立定量激励机制，利用实际项目数据验证该定量激励机制的有效性.
Change orders are the main cause of over budget cost. A project delivery mode called IPD (Integrated Project Delivery) can eliminate change orders in foreign construction projects, because its internal incentive mechanism based on principles of IPD can prompt contractors participating in the design phase to assist designers in optimizing design actively. In previous study, an IPD based qualitative incentive mechanism adapting the situation of construction projects in China was established to eliminate change orders. First, this paper summarized the qualitative incentive mechanism. Then, by analyzing the characteristics of change orders that would be eliminated by designers and contractors in China, established a quantitative incentive mechanism based on the qualitative one. Finally, it verified the effectiveness of the quantitative incentive mechanism with the financial data of actual projects