基于大数据理念的道桥结构健全性评价方法分析

Analysis of Evaluation Method of Road Bridge Structure Soundness Based on Big Data Concept

近年来,道桥结构趋向于向大跨度、多样式、复合型发展,在满足使用性能以及美观的同时也带来一些新的课题。采用大数据理念以及MEMS建立道桥结构安全性评价技术,通过收集研究对象资料,从理论上掌握其力学特性,并结合同类型桥梁数据建立样本库;针对实测道桥对象进行振动测试试验,利用获取的加速度波形进行分析并提取振动频率、振型以及变形等基本特性值;融合理论计算与类比数据库及实测试验结果,引入大数据分析技术对具有相似结构类型的道桥进行分类汇总并提取其共性分析其不同点。通过对比分析实测数据与样本数据库,建立基于大数据的道桥结构健全性评价方法并确认该方法的可行性。

In recent years,the road and bridge structures tend to be long-span,diversified and composite,which brings some new problems while satisfying the performance and aesthetics.This study introduces a method for evaluating the safety of structures based on MEMS and big data technology.The method establishes a sample library by collecting the same type of bridge data and grasping its mechanical properties.Vibration measurement is performed on the objective bridge,and acquired acceleration waveform is used to analyze and extract the basic characteristic values such as vibration frequency,vibration mode and deformation.Based on the sample data and the experimental results,big data analysis technology is used to classify and summarize the bridges with similar structure types and extract their commonalities.By comparing and analyzing the measured data and the sample database,the method of evaluating the safety of the bridge structures based on big data is established and the feasibility of the method is confirmed.