空間網(wǎng)架結(jié)構(gòu)在地震作用下考慮損傷累積的彈塑性分析.pdf

1、天津大學(xué)碩士學(xué)位論文空間網(wǎng)架結(jié)構(gòu)在地震作用下考慮損傷累積的彈塑性分析姓名：白聚會申請學(xué)位級別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：丁陽20031201AbstractThebreakageofthebuildingusuallyduedtothedamageaccumulation，Structuraldamagehistorydoubtlesswillproducetheimportantinfluenceonbuildingatfollow

2、upenlistmentwiththeresistanceandremainlifeHowevegthestudyaboutstructuralresistancetooknoaccountofdamageaccumulation，thatanalysiscertainlyaffectedtheaccuracyoftheanalysisresultEarthquakeisoneofthemainfactorstocausedamagea

3、ccumulation，therefore，ithaveextensiveactualandsocialmeaningtoanalyzestructureconsideringdamageaccumulationunderseismicexcitationsInthispaperbasingondamagemechanics，authorstudiedthedamageeffectonspatialgridstructuresunder

4、seismicexcitation，deduceddamagevariableundercirclingloading，establishedthemethodforexpressingreactiontospatial鰣dstructuresunderseismicexcitationwithsingledamagevariableBasingOiltherelationshipbetweentheforcesanddeformati

5、onsinelasto—plasticphase，ailhysteresismodelofstructuremembersconsideringdamagecumulationwereestablished，anddeducedtheelementelastoplasticstiffnessmatrixandthewholeelasto—plasticstiffnessmatrixforspatialgridstructures，got

6、themodifiedfiniteelementanalysismodel，andmodifieddynamicequilibriumdifferentialequationFinallyanexampleisgiven，analyzedaspatial酣dstructuresunderseismicexcitationandgotsomeconclusionKeywords：spatialtruss；seismicexcitation