Safety State Evaluation Method Based on Attribute Recognition Model for Ancient Timber Buildings

Abstract

Toimproveaccuracyofsafetystateevaluationresultsforancienttimberbuildingsandtoknowtherealstateofthebuilding,asafety grade evaluation model of ancient timber buildings is established based on attribute mathematic theory. From the perspective of macro,micro,qualitative,andquantitative,22factorsmayadverselyaffectthesafetystateofancienttimberbuildingareconsideredin thismodel.First,evaluationsystemisestablished,andevaluationindexesareselectedbasedonformerstudy,seismicdamagedata, andChinesecurrentcodeaboutancienttimberbuildings.Intheevaluationsystem,wholebuildingisdividedintofourparts,which arewoodframe,enclosingwall,foundation,andplinth.Differentpartscontaindifferentcomponents.Everycomponenthasitsown evaluationindexes.Second,basedontheAHPandentropymethod,thecomprehensiveempoweringmethodisusedtodeterminethe weights of the indexes. Third, the attribute recognition model is established to identify the safety grade of components or units. Fourth,basedontheevaluationresultsofcomponents,safetygradeofunitsisidentified.Then,safetydegreeoftheentirebuildingis determinedbytheminimumsafetygradeofunits.Atlast,themodelisappliedtothe“Libenhall”invillageSiping,Zhejiangprovince, China, and the assessment results are consistent with the results of damage identification.