Building steel bridges in New York, Virginia, Pennsylvania and Maryland: Progressive application of LRFD to steel bridge erection engineering
This paper tells the story of how a Bridge Construction Engineer and a Civil/Structural Engineering Professor learned from each other through the observation of bridge erection projects, and concurrent participation with industry organizations during development of the AASHTO LRFD Bridge Design Specifications (3rd–5th editions). Illustrations from several highway bridge projects in four states are used to explain a successful transitional journey from Service Load/Allowable Stress (SLD/ASD) to Load and Resistance Factor Design (LRFD) in steel bridge superstructure erection. Stability analysis and construction practice included the following: evaluation of controlling strength and serviceability criteria, steel bridge erection load (γi)) factors, reconciliation of state-assigned construction wind loadings to the AASHTO Design Guide for Bridge Temporary Works and ASCE 7 (Minimum Loads for Buildings and other Structures), computation of lateral flange bending stress (fl)) utilized on straight, curved, haunched multi-girder bridges, as well as cross-box girder (straddle bent) piers during erection; member resistance during construction under local flange/web and lateral torsional buckling of single girders, girder slenderness (λi), L/b ratio rules of thumb and controlling bracing lengths during critical stages in the construction sequence, bearing point development, bridge system slenderness and the securing of partially constructed bridges (during storm events). Bridge erectors often exercise individual preferences in applying construction means and methods toward achieving specified geometry within alignment tolerances, so the interface between LRFD designed bridge members, ASD rigging components and ASD/Load Factor Design (LFD) temporary foundation components is also discussed.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/15732487
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Supplemental Notes:
- ©2014 IOS Press and the authors. All rights reserved.
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Authors:
- Cisneros, R
- White, D W
- Publication Date: 2013-1-1
Language
- English
Media Info
- Media Type: Web
- Features: Figures; References; Tables;
- Pagination: pp 135-153
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Serial:
- Bridge Structures - Assessment, Design & Construction
- Volume: 9
- Issue Number: 4
- Publisher: IOS Press
- ISSN: 1573-2487
- EISSN: 1744-8999
- Serial URL: https://content.iospress.com/journals/bridge-structures
Subject/Index Terms
- TRT Terms: Bridge construction; Bridge design; Erection (Building); Load and resistance factor design; Steel bridges
- Geographic Terms: Maryland; New York (State); Pennsylvania; Virginia
- Subject Areas: Bridges and other structures; Construction; Highways; I24: Design of Bridges and Retaining Walls; I53: Construction of Bridges and Retaining Walls;
Filing Info
- Accession Number: 01506575
- Record Type: Publication
- Files: TRIS
- Created Date: Feb 5 2014 9:48AM