Assessment of viaducts and bridges (listed structures and ancient monuments)

《Assessment of viaducts and bridges (listed structures and ancient monuments) 》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、1.Assessmentofviaductsandbridges(listedstructuresandancientmonuments)R.L.MILLS,MSc,FistructE,Associate,BrianA.MortonandPartnersSYNOPSIS.Theproblemsencounteredincarryingoutworkonhistoricbridgesaresimilartothosewhichneedtobeovercomewhenengagedonanyremed

2、ialorrefurbishmentworkonhistoricstructuresgenerally.Theymaybesummarisedasextendingthelifeofthestructurewhilstcausingtheminimumdisturbancetotheoriginalfabric.Engineerstendtoadoptananalyticalapproachtothesolutionofproblemswithwhichtheyareconfrontedandth

3、ispaperarguesthatsuchanapproachwhichisusuallyaccompaniedbyacloseadherencetotherecommendationsinthevariousCodesofPracticeleadstounsympatheticproposalsbaseduponapessimisticjudgementofstructuraladequacy.LEGISLATIVECONTROL1.Theconservationandpresentationo

4、fEngland'sheritageofancientmonumentsandhistoricbuildingsistheprimeinterestoftheHistoricBuildingsandMonumentsCommissionforEngland(HBMC)orEnglishHeritagewhichisanindependentbodysetupbyTheGovernmentundertheNationalHeritageAct1983.2.Thelegislativeframewor

5、kisdiscussedinanotherpaperbeingpresentedtothisconferenceanditisthereforesufficienttoremindengineersthatstructurescanbebothscheduledasancientmonumentsandalsolistedashistoricbuildings.3.Theresultingcontrolsleadtoparticularproblemsforengineersinvolvedonw

6、orktohistoricbridgeswheretheinterestsofensuringafreetrafficflowwithaminimumofrestrictiononweightandspeed,conflictswithconservationrequirements.4.However,thisconflictcan,inmanycasesbeeliminatedoratleastreducedifacorrectConservationofengineeringstructur

7、es.ThomasTelford,London,-19895Downloadedby[SWINBURNEUNIVERSITYOFTECHNOLOGY]on[15/12/15].Copyright©ICEPublishing,allrightsreserved.VIADUCTSANDBRIDGESinterpretationofthestructuraladequacyismadeandproposalspreparedwhichrespectthehistoriccharacterofthestr

8、ucture.5.Diagnosingstructuralfaultsisofcourseopentodiscussionandattemptshavetobemadetodeterminewhichoftheapparentfaultsdatefromthetimeofconstructionandwhetherdifferentialmovementhasceased,orisstillcontinuing.THEPROBLEM6.Althoughitmustbesaidtha