研究目的: 海外EPC总价合同项目的投资压力、工程风险都较大，也为合理规避投资及工程风险提供了 自由空间。本文通过分析第比利斯绕城铁路总体设计、在特殊情况下一些因地制宜的工程方案、变更方案研 究及推进情况和策略,以实现项目投资控制并争取项目经济效益最大化和多方共赢的目标。
研究结论:(1)应高度重视EPC项目的技术特点和总价合同的特殊性，要以较小的代价和投人满足业主 要求和合同要求;（2)设计方案要广义地考虑项目的利益和效益,应兼顾参与各方尤其是承包商的利益,要在 技术、风险、投资控制间寻求平衡;（3)变更方案推进应坚持良好策略,要充分考虑业主和监理的关切和顾虑，应化整为零、由易到难、重点突破,分步骤、分段落说服利益相关方逐步理解并接受对各方有利的设计方案； (4)该研究成果可供类似海外EPC项目设计工作参考。
Research purposes： The overseas project under EPC contract needs the big investment and faces the high project risk, but it still has the free space for avoiding the investment and project risks. In this paper, the research is done on the overall design，the specific engineering solutions，the change plan and the pushing on strategy of the Tbilisi ring railway project in order to achieve the goals of controlling project investment, getting the maximum economic benefits and realizing win - win.
Research conclusions ： (1) The more attention should be paid to the technical characteristics of EPC project and the particularity of total price contract. The requirements of the owner and contract should be met with small cost. (2) The design scheme should broadly consider the interests and benefits of the project and the interests of all parties involved should be taken into account，especially the contractor. In addition，the technology，risk and investment control should be balanced. (3 ) The good strategy should be used to push on the change plan step by step and from easy area to difficult area on full consideration of the concerns of the owner and supervisor to persuade them to understand and accept the design scheme that is favorable for the all parties. (4) This research result can be as the reference to the similar works.
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