Research On The Stakeholders' Risk Control Capability Of Prefabricated Buildings

As a new way of construction method,prefabricated building is cleaner and more efficient,which has been greatly promoted by local governments.However,the high cost of it restricts its large-scale development.Only by controlling the cost risks in the construction process can the building enterprises raise their willingness to develop prefabricated buildings and survive in the fierce competition.In the process of cost risk management of prefabricated buildings,the risk control ability of each stakeholder varies based on its own financial ability,technical level and management ability,causing the responsibility for risk control of them differs from each other.This study first identifies the main cost risk factors of prefabricated buildings;then based on the existing literature,this paper extracts the evaluation indicators of risk control capabilities and builds the system of the evaluation of stakeholders' capability to control the prefabricated building cost risks.Based on the entropy weight-fuzzy comprehensive evaluation method,stakeholders' capabilities of risk control are evaluated from the single cost risk aspect and comprehensive ability aspect;In order to clarify the interaction mechanism between stakeholders on cost risk control,a two-mode social network model is established for analysis;Finally,an actual case of prefabricated building is applied to verify the rationality of the model.The research results show that: 1.In the case study of prefabricated building,except for the risk control capability of the construction unit in terms of financial ability,the risk control capability of all other stakeholders is at a medium level.Two groups have formed in the process of cost risk control,and each group has close internal relations and frequent exchanges.In addition,this paper also identifies two key stakeholders(developers and contractors)and ten key risk factors in this case,and puts forward corresponding suggestions for cost risk control.2.Through the case study,the risk control capability of five stakeholders was evaluated from the aspects of single cost risk and comprehensive ability,which verified the rationality and feasibility of the evaluation system.In practical applications,the corresponding evaluation indicators can be adjusted according to the characteristics and requirements of the project,so as to meet the evaluation requirements of risk control capabilities.3.The results of the coherent analysis of the two-mode social network model in the case verify the rationality of the model;the core-periphery structure analysis can identify the core stakeholders and risk factors,indicating the two-mode social network analysis can provide some reference for the risk management of prefabricated buildings.