| In recent years,with the acceleration of new urbanization process,the number of megaprojects is increasing,playing an increasingly important role in economic construction.However,due to the numerous stakeholders,long project cycle and complex project interface involved in megaprojects,there are more risk sources and high uncertainty and complexity.At the same time,the volatility,uncertainty,complexity and ambiguity of the global economy and the sudden outbreak of COVID-19 have made megaprojects in a more volatile and changeable environment.Organizational resilience is a capability to help organizations anticipate potential risks and ensure their survival,adaptation and development in turbulent environments.Giving full play to organizational resilience is a useful way to cope with external shocks and unexpected events.Therefore,exploring the influencing factors and development mechanisms of organizational resilience in megaprojects is an important topic to,which can improve the level of organizational resilience and reduce the possibility of project losses.To explore the development mechanism of organizational resilience in megaprojects,a resource integration mechanism including resource acquisition,resource exchange,resource allocation and resource utilization is constructed based on conservation of resource theory,social exchange theory,resource-based view and resource bricolage theory.Combining the resource perspective and dynamic capacity theory,and selecting dynamic capacity and resource availability as mediating variable and moderating variable,a moderated mediating structural equation model is constructed to verify the relationship mechanism between resource integration and organizational resilience of megaprojects.The data of model variables are obtained through questionnaire survey,and the Partial Least Squares Structural Equation(PLS-SEM)method is used to test direct effect,mediating effect,moderating effect and moderated mediating effect.The results show that resource integration has a significant positive effect on the improvement of organizational resilience of megaprojects,and dynamic capability plays a mediating role in the relationship between them.Contrary to the established hypothesis,resource availability negatively moderates the relationship between resource integration and dynamic capability,and also negatively moderates the mediating effect of dynamic capability between resource integration and organizational resilience.To explore the influencing factors and paths of organizational resilience of megaprojects at different stages before and after disasters,according to the theoretical perspective method,resource acquisition,resource exchange,resource allocation and resource utilization are selected as conditional variables from the resource perspective,and defense resilience and recovery resilience are selected as result variables.The crisp sets-qualitative comparative analysis(cs-QCA)method is applied for configuration analysis with 15 megaproject cases.The optimal combinations of conditional variables are obtained: before the disaster,two main paths to significantly improve defense resilience are "resource acquisition * resource exchange * resource allocation" and "resource acquisition * resource allocation * resource utilization".After the disaster,two main paths to significantly improve recovery resilience are "resource acquisition * resource exchange *resource utilization" and "resource acquisition * resource allocation * resource utilization".The research integrated multiple resource theories including conservation of resources theory,social exchange theory,resource-based view and resource bricolage theory,and extended related resource theory and dynamic capability theory to the research field of major engineering projects.From the perspective of resources,we explored the improvement paths of organizational resilience in megaprojects,which expanded the application range of concepts such as resource integration and organizational resilience,enriched the research on the governance of major engineering projects,and provided management insights and practical guidance on how to enhance organizational resilience. |