Development of Design Specifications and Commentary for Horizontally Curved Concrete Box-girder Bridges
David Evans and Associates, National Cooperative Highway Research Program, Zocon Consulting Engineers, Inc
Transportation Research Board, Jan 1, 2008 - Box girder bridges - 87 pages
This report provides specifications, commentary, and examples for the design of horizontally curved concrete box-girder highway bridges. The report details the development of the design procedures. Recommended Load and Resistance Factor Design (LRFD) specifications and design examples illustrating the application of the design methods and specifications are included in appendixes (available on the TRB website at http://trb.org/news/blurb_detail.asp?id=9596).
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Chapter 4 Global Response Analysis Studies
Conclusions of the Parametric Study
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12 2a midheight AASHTO LRFD abutments analyzed applied Article bearing forces behavior Caltrans cantilever cast-in-place concrete box-girder bridges concrete cover Config conﬁguration considered construction cover concrete cracking cross section curved box-girder bridges curved bridges curved concrete box-girder curved girder dead load deck deﬂections delamination Design Speciﬁcations diaphragms Duct 3 Duct effective width Equation exterior webs factor falsework ﬁnite element ﬁrst ﬂange ﬂexural shear girder bridges global grillage analogy grillage models horizontally curved inches inﬂuence lateral shear live load load distribution local analysis longitudinal method Midspan multi-cell negative shear lag parameter post-tensioned post-tensioned concrete precast prestressed concrete ratio rebar regional transverse bending reinforcement segmental segmental bridges shear and torsion shear force shear stress signiﬁcant signiﬁcantly skew slab span stiffness stirrup spacing stirrup yield straight bridges strain stresses structures superstructure Table tendon breakout tendon ducts tensile strength tensile stress thickness tion torsion vertical warping