斜腿剛構(gòu)橋幾何布局的優(yōu)化設(shè)計(jì).pdf

1、石家莊鐵道學(xué)院碩士學(xué)位論文斜腿剛構(gòu)橋幾何布局的優(yōu)化設(shè)計(jì)姓名：安蕊梅申請學(xué)位級(jí)別：碩士專業(yè)：道路與鐵道工程指導(dǎo)教師：段樹金20040201AbstractAnoptimumdesignincludesstaticoptimumanddynamicoptimumforthelayoutoftherigidframe—bridgewithinclinedpiersandwiththeuniformcrossisstudiedByenginee

2、ringexperienceandstructureanalysis，theoptimumtargetforthelayoutofrigidframe—bridgewithinclinedpiersisproposedandthelayoutlimitsisgiven，Amathematicalmodelthatincludingtopographyisgivenundertherestrictionoftheconstantvolum

3、eInchapterl，thebasicthingisintroducedaboutoptimumdesignforthebridgeandaboutrigidframebridgewithinclinedpiersInchapter2，thestaticoptimumaimisgivenwhichistominimizetheaverageofthesquareslimofstresses，andtheaimfunctionisest

4、ablishedbythestaticstructureanalysisofplanebarsystemthatisbasedonthedisplacementmethodAdirectsearchmethodcallednetchecksearchmethodiSusedtoseekthemostoptimumvalue，Innumericalexamples，mostoptimumlayoutisdesignedunderthest

5、aticcombined10ad，andsomeconclusioniSlead，andtheeffectthatthevolumeandratioofthemomentofinertiaischangedtothefunctionandtheoptimumvalueare8howedintablesInchapter3，thedynamicoptimumaimisgivenwhichistominimizethesquaresumof

6、naturalperiodsofvibration，andtheaimfunctionisestablishedbythedynamicstructureanalysisandcalculatingthespecificmatrix。Duringthedesign，theeigenvaluesisnotnecessaryThesamedirectsearchmethodcallednetchecksearchmethodisusedIn