Design and analysis of bridge microstructure under the condition of large-scale geographical environment

Abstract

The design and analysis of bridge microstructure are two indispensable parts of bridge construction and maintenance and the two always complement each other throughout bridge's life cycle. Furthermore, bridge microstructure design and analysis under large-scale geographic environment are more complicated. In order to ensure bridges' safe construction and normal traffic under this environmental condition, it is necessary to find a suitable microstructure and use a scientific classification method to analyze it. Under large-scale geographic condition, the design and analysis of bridge microstructure should be planned from multiple steps after construction party puts forward bridge planning and construction goals. The stability of bridge engineering geology should give more consideration to the feedback mechanism of internal structural system characteristics for microstructure design and analysis, and must have a geographical viewpoint. Therefore, on the basis of summarizing and analyzing previous research works, this paper expounds the current research status and significance of large-scale geographic environment, elaborates the development background, current status and future challenges of bridge microstructure design and analysis, introduces the methods and principles of single-degree-of-freedom energy structure reaction and the dynamic microstructure characteristics, constructs bridge microstructure model, conducts bridge microstructure data analysis, performs bridge microstructure design under large-scale geographical environment condition, proposes the combined analysis of load effect, discusses the optimization analysis of structural topology, puts forward the bridge microstructure analysis under large-scale geographic environment condition, and finally carries out a simulation experiment and its result analysis. The study results show that when the large-scale geographic environment is divided into regular rectangular plots, the bridge microstructure can maintain its design cohesion, and the stretch and continuity of those plots and bridge convey a strong sense of structure. Microstructure parameters represent the stiffness caused by the average properties of cross-sectional materials of bridge microstructure. For a uniform classical continuous microstructure, the design can accurately describe bridge's bending resistance. The study results of this paper provide a reference for further researches on the design and analysis of bridge microstructures under the condition of large-scale geographic environment.