Research On Resilience Of Construction Safety Management System For Old Industrial Building Renovation

For the large number of idle or abandoned old industrial buildings emerging in China,it is a mainstream trend to preserve their important values and give them new architectural functions by combining heritage conservation,functional replacement,energy saving and emission reduction,carbon neutrality and other sustainable development concepts.The construction phase of the old industrial buildings renovation is a key link of their physical life’s extension and building functional renew.The research found that the old industrial buildings and their affiliated environment have problems such as redundant environment,unstable structure and complex operation site,and there is no standard specification related to the safety of old industrial building renovation construction in China,so there are large safety hazards.Traditional risk management focuses on ex-ante control and cannot implement dynamic management for the whole process of accident development,while safety system resilience management focuses on the resistance,response,recovery and adaptability of the system in the whole process.Therefore,the resilience theory is introduced into the research on the construction safety management of old industrial building renovation,to explore the whole process performance of the resilience of the construction safety management system,and to find the focus and optimization points of the resilience,the main research contents are as follows:(1)Defining the resilience of the safety management system for the old industrial buildings renovation.By summarizing the relevant theoretical features,and combining with the characteristics of renovation construction safety management,we classify the construction safety management system based on WSR system theory and analyze the structure and role relationship of the system.Define the connotation of resilience of construction safety management system,and analyze the performance of system resilience in the whole process of accident development.Delineate the elements of the resilience characteristics of the construction safety management system,and clarify the performance and changes of the resilience characteristics of each safety state.(2)Building a resilience index system for the construction safety management system of old industrial building renovation.Based on the logic and concept of WSR system theory of "physical,affairs,and human",we analyze and summarize the relevant domestic and foreign literature,norms and standards,and identify the factors influencing the resilience of construction safety management system in three dimensions.A questionnaire survey of experts and SPSS software are used to analyze and test the index system,which finally determine the five subsystems of building body,environment,material technology,organization and personnel as the first-level indicators and covered 28 second-level indicators,from robustness,redundancy,efficiency,adaptability to reflect the characteristics of the index resilience,and interpret the index connotation.(3)Establishing a resilience evaluation model for construction safety management system of old industrial buildings renovation and applying it to an example.In order to improve the objectivity and accuracy of the evaluation results,the combined assignment method is used to calculate the index weights by combining the entropy weight method with the improved hierarchical analysis method based on the gray correlation model.Combine with the characteristics of resilience evaluation,in order to reduce the existence of ambiguity and randomness,the topo cloud model is selected to evaluate the resilience of the construction safety management system,determine the influence degree of each index on the level of resilience and analyze the reasons.Evaluation of the resilience of the construction safety management system for a textile factory renovation project in Xi’an,Shanxi Province,the second phase of the plant,the resilience level is high,and according to the analysis of the evaluation results,the scientificity and feasibility of the model is validated.Based on the actual evaluation,specific suggestions for resilience optimization and enhancement are made from the three dimensions of WSR system theory.