无应力索长的快速算法(2)

来源：网络收集时间：2026-07-13

导读：述[J].中南公路工程,2001,26(2). QuickCalculationforDeterminationof UnstressedCableLengthofInclinedStressedCable 121 CHENTai-cong,WANGWei-feng,SUCheng (1.CollegeofArchitecture,SouthChinaUniversityofTec

述[J].中南公路工程,2001,26(2).

QuickCalculationforDeterminationof

UnstressedCableLengthofInclinedStressedCable

121

CHENTai-cong,WANGWei-feng,SUCheng

(1.CollegeofArchitecture,SouthChinaUniversityofTechnology,Guangzhou510640,China;

2.CollegeofCommunicationandTransportation,SouthChinaUniversityofTechnology,Guangzhou510640,China)

Abstract:Indeterminationoftheunstressedcablelengthofinclinedstressedcable,twomethodsareusuallyused.Thefirstone,catenarymethod,canexplicitlytakethenonlinearpropertyofcableintoac-countandthenobtainanaccurateunstressedlength.Butessentialiterativecomputationblocksitfromwideengineeringapplication.Thesecondone,ErnstmethodrecommendedinStandards,canobtainanap-proximateresultthrougheasycomputation.Butlargeerrorsmayariseinthecaseoflongflexiblecable.Inthispaper,anewnon-iterativequickmethodwithhighaccuracyispresented.Onthebasisofcatenarymethod,itcandirectlycalculateanapproximatevalueofthehorizontalcomponentofcableforcethroughreasonablesimplification.Thentheunstressedcablelengthcanbequicklydeterminedwithoutiterations.Numericalresultsofallthreemethodsshowgoodengineeringprospectofthenewmethod.

Keywords:cable-stayedbridge;nonlinear;unstressedcablelength

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