用人工神經(jīng)網(wǎng)絡估計橋梁的行為及橋梁撓度測量的一種新方法.pdf

1、同濟大學碩士學位論文用人工神經(jīng)網(wǎng)絡估計橋梁的行為及橋梁撓度測量的一種新方法姓名：黃崢申請學位級別：碩士專業(yè)：橋梁與隧道工程指導教師：陳德偉20040310ABS7FRACTLong—spanbridgesarethelifelinesforacountryInordertomakesurethesafetyofabridge，itisveryimportanttoestablishamonitoringsystem，whichinclu

2、desseveralissues：long—termautomaticrealtimedataacquisition，dataanalysis，safetystandardandwarningsystemTillnowmanyfactorssuchasapplieddataanalysismethodandnleasurementfoodeflectionofbridgestructurearehimlelingthedevelopme

3、ntofmonitoringsystemBridgedeflectionisanimpoz‘tault)aramelerwhichisgenerallyconcernedItisalsothemostintuitionisticparametellwhichreflectstheefrectofvehicleloadandenvironmentaroundthebridgeWhilealialyzingthedeflectionofas

4、ingleloaditiSnecessarytoseparatetheintegrateresponseofthestructure，whichisinsolubleusingtraditionaIdataanalysismethodIlltileconditionofIOWtrafflcandshortmeasuringperiodtheeffectofliveload，subsidenceetccanbeeliminatedItCa

5、nberegardedtIlatthedeflectionofbridgesiSarousedonlybytemperatureTheauthortriestouseartificialneuralnetworkmethodtosimulatethenonlinearrelationsbetweentemperatureanddeflectionofbridges，predictthedeflectionoftemperature，an

6、dseparateitfromthewholeresponseInthesamewayanapplicabledcllectionmeasurementiSanotherproblemformonitoringsystemTheauthordevelopsallewmeasurementsystemBysettingupapressurefieldaroundthebridgetilechangesofdeflectionwillbea