ABSTRACT

Introduction............................................................................................................ 145 Background............................................................................................................. 146

Wind.Loads................................................................................................. 146 Traditional.Model........................................................................................ 147 Proposed.Model.......................................................................................... 147

Research................................................................................................................. 147 Code.Study.................................................................................................. 148 Lateral.Load.Paths.Study............................................................................ 148

Models.............................................................................................. 149 Discussion.of.Analytical.Models...................................................... 156 Tests.................................................................................................. 158 Comparisons..................................................................................... 158 Model.and.Test.Verification.of.Bridge.with.No.Deck...................... 159 Portal.Modeling.Question................................................................ 160 Conclusions....................................................................................... 161

Transducer.Development............................................................................. 162 Notes.on.Wind.Observations.................................................................................. 162 Acknowledgments.................................................................................................. 163 References............................................................................................................... 164

The. inspiration. for. this. paper.finds. its. roots. in.Frank.Hatfield’s,. “Engineering. for. Rehabilitation.of.Historic.Metal.Truss.Bridges”,.presented.at.the.7th.Historic.Bridges. .Conference.13. Dr.. Hatfield. suggested. that. conventional. truss. analysis. may. underestimate.the.strength.of.a.metal.truss.bridge.and.he.observed.that.today’s.requirements. for.design.wind.load.are.much.more.demanding.than.historical.design.practice.