Integrated modeling method for global analysis of power plant boiler steel structure

Abstract

The invention provides an integrated modeling method for a global analysis power plant of boiler steel structure, aiming at accurately considering influences on a boiler body in a global analysis process of the power plant boiler steel structure and optimizing a power plant boiler steel structure system so as to enable a design result to be more reasonable, safe and economical. The method provided by the invention comprises the following steps: establishing a series of rigid lacing bars at a hoisting point position of a boiler; arranging lacing bar hinging connecting points at elevation parts of boiler guide devices and establishing mass points; establishing a mechanical model for simulating a boiler body; establishing rigid constraints at the mass points of the elevation parts of all the boiler guide devices respectively so as to guarantee that the horizontal displacement is consistent and the vertical displacement is free; and applying single-directional restraints to the guide devices between a boiler body model and a framework model, so as to simulate an actual limiting direction. According to the method provided by the invention, a mechanical relation between the boiler body and a framework and mechanical properties can be more accurately simulated through integrated modeling, and the safety and reliability of a boiler steel structure design are easily guaranteed; and the economic benefits of engineering are good.

Description

technical field [0001] The invention belongs to the technical field of structural engineering steel structures, and in particular relates to an integrated modeling method applicable to the overall analysis of steel structures of power plant boilers. Background technique [0002] Due to the complex equipment process and numerous pipelines, the steel structure of power station boilers usually has a special structural system, which makes the overall analysis of the structure more important in ensuring the safety and economy of the design results. The focus and difficulty of the overall analysis of the steel structure of the utility boiler lies in the consideration of the influence on the boiler itself. At present, in the design analysis, all the mass of the boiler is usually applied to the roof structure of the frame, which will seriously amplify the effect of horizontal earthquake action and reduce the rationality and economy of the structural design results; there are also ca...

AI Technical Summary

Problems solved by technology

At present, in the design analysis, all the mass of the boiler is usually applied to the roof structure of the frame, which will seriously amplify the effect of horizontal earthquake action and reduce the rationality and economy of the structural design results; there are also cases where the mass of the boiler is directly applied to the guiding device of the frame, This method can neither accurately reflect the magnitude and distribution of the boiler horizontal force transmitted by different guide devices under the action of horizontal earthquakes, nor can it accurately simulate the load distribution of hundreds of hanging points in the frame roof structure, which will also affect the safety and security of the design results. reliability and economy

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