中文摘要：

由于不同交易方式的项目在冲突来源、项目属性和组织内外部环境方面存在差异,以业主与承包商冲突为代表的项目冲突对成本绩效的影响不同.基于冲突相互作用观,通过收集187份有效问卷检验了设计-招标-建造（DBB）和设计-建造（DB）方式下业主与承包商冲突对成本绩效的影响关系.相关分析和回归分析结果表明：在DBB方式下,业主与承包商之间的冲突与项目成本绩效呈倒U型关系,适度的冲突能提升成本绩效,但随着冲突水平继续上升,成本绩效开始下降;在DB方式下,业主与承包商之间冲突产生的积极作用并不显著,主要起消极作用.

英文摘要：

Represented by owner-contractor conflict,project conflict influences cost performance diversely in different project delivery systems,due to their differences in source of conflict, project attributes, and the internal/external environment of organization.Based on the interactionist view of conflict,this paper tested the relationship between the owner-contractor conflict and cost performance in design-bidbuild（DBB）and design-build（DB）projects with 187 valid questionnaires.Hypotheses were tested by using correlation analysis and regression analysis.Results indicate that the owner-contractor conflict in DBB projects influences the project cost performance with an inversed-U shape,which means a moderate level of conflict can improve cost performance until a certain point beyond which the cost performance diminishes. However,the owner-contractor conflict in DB projects mainly produces negative impact on the project cost performance rather than the functional outcomes.