中文摘要：

不合理的风险分担会引发承发包双方的对抗思维与责任推诿，严重阻碍项甚管理绩效的提高，但工程实践中却存在着与此相悖的现象。本研究认为风险分担整体框架由缔约阶段的风险初次分担与履约过程中的风险再分担联动构成，而社会资本是与风险分担两阶段都密切相关的客观情境因素，工程项溺中存在“社会资本→风险分担→工程项目管理绩效”的关联关系。研究结论表明，交易双方应根据其社会资本合理选择风险初次分担的不完备程度，并为风险再分担提供支持制度，以期实现合理的风险分担，有效改善项目管理绩效。

英文摘要：

Improper risk allocation leads to opposite mind and responsibility shuffling between the owner and the contractor, which hinders the improvement of project management performance. In this study, risk allocation is conceived as a whole framework which consists of two associated processes, including the first risk allocation in the contract and risk reallocation during the performance of the contract. While social capital is the key objective factor which is closely related to both of them. The relationship of ＂social capital to risk allocation to project management performance＂ exists in the construction projects. The findings indicate that the owner and the contractor should select proper incomplete degree of first risk allocation and offer support institution for the risk reallocation, in order to get proper risk allocation and further excellent project management perforl＇nance.