The Research On Construction Safety Assessment And Early Warining In Mountainous Expressway

Highway is the production of social and economy development. And it is an important symbol of national modelization. But safety problems in freeway construction of mountainous region have puzzled people in the industry and scholars for a long time. In recent years, with the rapid development of national economy, frequent safety accidents result in great loss of national property and become the focus of entire social attention. The government always attaches importance to safety production and have taken many countermeasures. However, those can't wok efficiently. This should arouse our deep thinking on present safety management system. In order to turn the passive situation of safety management radically, we must face up to, study, change austere reality from brand-new perspective. It is the most important and urgent duty of present production to safeguard general constructors' personal safety and health, create safe, healthy and comfortable working conditions, raise production level of mountainous freeway. On the basis of investigation on the spot and consulting literature, through and systemic research on safety evaluation and early warning in freeway construction of mountainous region is conducted to utilize safety system engineering, fussy mathematics, analytic hierarchy process and computer science.Hazard in construction project of mountainous freeway is the cause of construction accidents. It is necessary to implement hazard management to control safety risk on spot and prevent accidents. Mechanic analysis of hazard leading to losses is analized based on cause and effct chain theory, energy unexpected release theory and track intersaction theory. Hazard distribution, identification countermeasures and problems in existence during identification process are studied. Risk assessment is carried by LEC. Construction hazard identification, risk assessment, control plan is implemented combined a project.Mechanic analysis of safety accidents is the foundation of construction safety evaluation of mountainous freeway. Major categories of safety accidents are analyzed. It also studies the cause of falling from high places, attacking by falling objects, injury by machinery, electric shocking and collapse accidents. It attributes construction safety accidents to four factors those are human beings, materials, environment and management. Index system is the key of construction safety evaluation of mountainous freeway. It is gained united to actual situation on the spot. The connation of safety evaluation indexes is analyzed from human beings, materials, environment and management thoroughly.Fussy synthetical judgement model of construction safety status in mountainous freeway is established using fussy mathematics. The weights of factors are calculated by analytic hierarchy process. The standard of construction safety evaluation is also studied.Construction safety evaluation and early warning system is developed by visual programming theory of computer. An example confirms the validity of it.Last section draws a conclusion from the whole research and takes a look into the forth-coming work.