Emergence Pattern Of Construction Safety Accidentsand Risk Warning Research In Longhua Company

Construction industry is one of pillar industries of national economy in China. It has a very important role in the development of the national economy and the construction of socialist market economy. But at the same time, the construction industry is a high-risk, occupation disease and accident prone industry. Construction safety warning plays an important rolein the reduction of constructionsafety accidents. How to control the construction safety accident early warning effectively is the key to improve construction safety.This thesis analyses the occurred accident, the hidden danger of accident and other aspects of Longhua building companyin-depth. The thesis analyzes the influence factors of construction safety., including four aspects of people’s unsafe behavior, unsafe state of object, unsafe environmental conditions, defect management existence.With the method of fuzzy comprehensive evaluation, the thesis makes a comprehensive early warning evaluation static of Longhua construction company for construction safety. The construction of the building production accident early warning index system, gives a method to quantify the qualitative index; fuzzy complementary judgment matrix to determine the index weight based on the conducted consistency test; finally static warning Longhua construction company results verification analysis.Using the theory and modeling method of system dynamics, based on analyzing the effects of structural hierarchy Longhua construction company security elements, the thesis uses the fish biting the forms of expression of safety factor structure level. The thesis analyses typical model of construction emergence and describes the Longhua construction company emerging pattern. The thesis draws the human safety behavior subsystem causal flow chart, the flow chart of causal state subsystem, the environment subsystem safety state of causal flow chart, the flow chart of safety state subsystem causal flow chart and the construction safety state general causal management system. Fitting processing and consistency check for the data factor has a causal relationship performance in flow chart using SPSS software. The thesis builds a construction safety system corresponding simulation model, including human safety behavior subsystem model, safety state subsystem model compounds, the security state of subsystem models of the environment, the safety state of system model and construction safety state of the total management system model. The thesis operates the system dynamics simulation software Vensim-PLE and gives a comprehensive early warning evaluation for dynamic for the construction safety of Longhua companythrough the security level simulation subsystem and the whole system. And the thesis runs dynamic early warning simulation emerging construction safety accidents in different situations.The thesis comparesstatic fuzzy comprehensive evaluation earlywarning with early warning evaluationon method based on kinetic. For construction safety evaluation Longhua construction company, the evaluation results differences were smaller. But the early warning evaluation method based on dynamics has obvious advantages, for it reflects the emergence mechanism of construction production safety, it can reflect the dynamic relationship between the safety factor of the. And it can forecast development trend of accident effectively, help to build the long-term mechanism of construction safety accident prevention.