基于GA-WNN的橋梁基礎(chǔ)結(jié)構(gòu)局部沖刷風(fēng)險模糊評估方法

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DAI Longqiang

（Zhongmei Engineering Group Ltd.，Nanchang 33OoOo，China）

Abstract：Aimingattheproblemthatitisdificulttoobtaintheriskindexofsouringdisaster，thelowaccuracyofscouringrisk assessmentandthehighriskofsudencollpseofbridge infrastructure，afuzzevaluationmethodofscouringrisbasedonGA-WNNis proposed.Thelocalsouring mechanismofbridgeinfrastructureisaalyzd，andthesouringriskevauationindexsystem iscostructed byusingGA-WNNnetwork.Throughthedimensiolessprocessingofscouringriskevaluationidexdata，theweightoffuzyevaluation indexiscalculated；Thescouriskindexisusedtoreflectthedegreeofscourrisk.CombinedwithGA-WNNnetwork，themaximum characteristicrotofthecheckmatrixisusedtocalculatetherandomconsistencyratio，andthefuzzevaluationalgoritofsourriskis designed.The results of example analysis show that therelative error can be controlld within 2% when evaluating the scouring risk，and the evaluation accuracy is greatly improved.

Keywords：GA-WNNnetwork；fuzzyevaluation；localscouring；bridge infrastructure；risk assessment；scouring mechanism

0 引言

造成重大的經(jīng)濟(jì)財產(chǎn)損失，還要面臨長時間的修復(fù)和改建，不僅耗時，還影響地方經(jīng)濟(jì)的發(fā)展[3] 。（剩余5560字）