Bridge hanging basket construction risk assessment method based on fuzzy analytic hierarchy process

Abstract

The invention relates to a bridge hanging basket construction risk assessment method based on a fuzzy analytic hierarchy process. The method comprises the steps that a bridge construction project hanging basket construction safety risk assessment index set is determined; according to expert evaluation opinions, a judgment matrix is obtained through comparison of every two factors, the maximum feature value and weight of the judgment matrix are calculated, and whether consistency of the judgment matrix passes or not is checked; a grade matrix of a single criterion layer is determined by using atrapezoidal membership function, and a primary fuzzy evaluation matrix is obtained via calculation; and finally, a step of comprehensively carrying out secondary fuzzy comprehensive evaluation on themain criterion layer is conducted to obtain a risk evaluation result. The safety condition of the bridge hanging basket construction system is evaluated through the fuzzy hierarchy method, and the method has the advantages of being simple in design, convenient to implement, comprehensive in consideration factor and the like; meanwhile, according to a construction site and a safety system of the construction site, uncertain influence factors causing bridge hanging basket construction accidents can be converted into a model capable of conducting quantitative calculation, and therefore scientific reference is provided for preventing and controlling the hanging basket construction accidents.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a construction risk assessment method for bridge hanging baskets based on fuzzy analytic hierarchy process. Background technique [0002] With the rapid development of my country's economy, bridges, as the link of regional economic development, have achieved unprecedented development, and long-span bridges have been widely used in construction. However, the increase of bridge spans will lead to more risks in construction. Long-span bridges are generally constructed by cantilevered box girders with hanging baskets. Due to the complicated construction process of the hanging baskets, most of which are high-altitude operations, there are potential safety hazards in the cantilever pouring construction process of the hanging baskets, and the risk is relatively large. During the construction period, any mistake Both failures and omissions will have adverse effects on th...

AI Technical Summary

Problems solved by technology

Long-span bridges are generally constructed by cantilevered box girders with hanging baskets. Due to the complicated construction process of the hanging baskets, most of which are high-altitude operations, there are potential safety hazards in the cantilever pouring construction process of the hanging baskets, and the risk is relatively large. During the construction period, any mistake Both accidents and omissions will have adverse effects on the bridge, and even lead to engineering accidents, which will not only cause economic losses, but also affect the uneasiness of social life.

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