基于EI及MAC算法的连续刚构桥传感器优化布置

Optimal Sensor Placement of Continuous Rigid Frame Bridge Using Algorithm Based on Effective Independence and Modal Assurance Criterion Methods

介绍了有效独立法(EI)和模态保证准则(MAC)的工作性能与适用范围,并结合各自优点,得到了一种新型的混合算法。将此方法运用到以龙河大桥为研究对象的连续刚构桥传感器布置上。结果表明:基于EI及MAC混合算法得到的测点截面位置有别于人为凭借经验将传感器布置在根部、边跨及中跨1/4倍数截面等位置;通过MAC值验算,连续刚构桥传感器布置在此方法下能得到满意的优化结果。

Function and applicability of effective independence method and modal assurance criterion method were introduced.A new hybrid algorithm by assembling their advantages was worked out;mathematical method was applied in optimal sensor placement of continuous rigid frame bridge on treat Longhe Bridge as a case.Result showed section location acquired after EI and MAC methods was different from root section and 1/4 times section in cross-border based on people＇s experience.According to MAC,sensor placement of continuous rigid frame bridge could obtain satisfactory optimization result through the method.