Index Catalog // ScholarsArchive@OSU

Analysis of diagonally cracked conventionally reinforced concrete girders in the service load range

Creator:: Robelo, Melissa J.
Abstract:: Performance evaluation of conventionally reinforced concrete (CRC) bridge superstructure elements with diagonal cracks is of interest to the bridge engineering community. Standardized methods to predict service-level stress magnitudes in cracked bridge girders under combined bending and shear forces are not available. An analysis procedure was developed to determine the response...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Melissa J. Robelo for the degree

Wind induced torsional fatigue behavior of truss bridge verticals

Creator:: Keller, Philipp
Abstract:: The Astoria-Megler Bridge is a 6.6 kilometer (4.1 mile) long bridge, connecting Oregon and Washington on US 101, with a continuous steel truss main span of 376 m (1232 ft). It is the second longest main span bridge of this type in the world. Due to vortex shedding, some of...
Resource Type:: Masters Thesis
Full Text:: ................................................................................................. 28 3.3 In 3.3.1 3.3.2 3.3.3 3.3. 3.3. 3.3. 3.3. 3.3. 3.3.4 3.3. 3.4 L 3.5 E

Experimental research on the behavior and strength of large-scale steel gusset plates with sway-buckling response including effects of corrosion and retrofit options

Creator:: Hafner, Anthony G.
Abstract:: The collapse of the I-35W Bridge in Minneapolis, MN on August 1, 2007 brought into question the design and inspection of gusset plates in steel truss bridges. The experimental tests performed in this research study the sway-buckling strength and behavior of large-scale steel gusset plates in an isolated truss connection....
Resource Type:: Masters Thesis
Full Text:: truss member stiffness in experiment and existing bridges, kT = EI/L3, kR = EI/L

Testing and evaluation of flexural reinforcing bars terminating in columns

Creator:: Koester, Carl C.
Abstract:: Capacity of transverse 1950's vintage reinforced concrete deck girder bridge bent caps with large straight bar anchorages were investigated and evaluated. Eleven subassemblage column specimens were examined with different anchorage lengths, bar groupings, amount of transverse steel, and externally applied axial force. Test results showed an increase in anchorage capacity...
Resource Type:: Masters Thesis

Flexural steel anchorage performance at diagonal crack locations

Creator:: Triska, Mary Ann
Abstract:: Large numbers of reinforced concrete deck girder bridges that were constructed during the interstate system expansion of the 1950s have developed diagonal cracking in the stems. Compared to the present AASHTO-LRFD standards, the provisions of the 1950s allowed for higher shear stress in the concrete, thus reducing the amount of...
Resource Type:: Masters Thesis
Full Text:: , µavg, over an incremental segment of reinforcement is: 4 s b avg d f d l µ ∆= [2.1] where

Investigation of the fatigue behavior of diagonally-cracked CRC deck-girders repaired with CFRP

Creator:: Williams, Grahme T.
Abstract:: Fiber reinforced polymers (FRP) are becoming more widely used for repair and strengthening of conventionally reinforced concrete (CRC) bridge members. Once installed, the repair may be exposed to millions of load cycles during service life. The anticipated life of FRP repairs for shear strengthening of bridge members under repeated service...
Resource Type:: Masters Thesis
Full Text:: r;::::::::=~----,--,-------,-----,---r--, 2400 j-L._ __ J---+---+--------+----j-----_-_+--..,___

An investigation of Oregon weight-in-motion data for bridge rating implementation and evaluation

Creator:: Pelphrey, Jordan Michael
Abstract:: The LRFR Manual, within commentary Article C6.4.4.2.3, contains provisions for development of site-specific live load factors. In Oregon, truck Weigh-in-Motion (WIM) data were used to develop live load factors for use on state-owned bridges. The factors were calibrated using the same statistical methods that were used in the original development...
Resource Type:: Masters Thesis
Full Text:: Using Weigh-in-Motion Data Jordan Pelphrey, Christopher Higgins, Bala Sivakumar, Richard L. Groff, Bert

New acoustic emission applications in civil engineering

Creator:: Schumacher, Thomas
Abstract:: Non-destructive testing methods and applications have become of increasing interest due to the worldwide aging and deteriorating infrastructure network. In the field of Civil Engineering, bridges and bridge components as well as non-structural elements such as roadway pavements for example, are affected. In particular, the Acoustic Emission (AE) technique offers...
Resource Type:: Dissertation
Full Text:: . S., Hawkings, N. M., Chan, Y.-L., and Lin, I.-J. (1980). "A Feasibility Study of Detecting

Influence of diagonal cracks on negative moment flexural anchorage performance in reinforced concrete bridge girders

Creator:: Goodall, Joshua K.
Abstract:: Large numbers of vintage reinforced concrete deck-girder bridges remain in the national bridge inventory. Many of these exhibit diagonal cracking and other distress. Due to the design practices of the time, it is common to observe cracks at locations where flexural reinforcing steel is terminated along the span. The presence...
Resource Type:: Masters Thesis
Full Text:: .......................................................................................... 137 Appendix J: Specimen IT.60.Ld2

Laboratory performance of highway bridge girder anchorages under hurricane induced wave loading

Creator:: Lehrman, Jora
Abstract:: Many bridges along the Gulf Coast of the United States were damaged by recent hurricanes, and many more are susceptible to similar damage. This research examines performance of common anchorage connection details for AASHTO Type III prestressed concrete girders used by some transportation agencies. Full-scale specimens were fabricated and tested...
Resource Type:: Masters Thesis
Full Text:: . 17 The bursting steel stirrups consist of two L-shaped bars that extend the height of

ScholarsArchive@OSU

Analysis of diagonally cracked conventionally reinforced concrete girders in the service load range

Wind induced torsional fatigue behavior of truss bridge verticals

Experimental research on the behavior and strength of large-scale steel gusset plates with sway-buckling response including effects of corrosion and retrofit options

Testing and evaluation of flexural reinforcing bars terminating in columns

Flexural steel anchorage performance at diagonal crack locations

Investigation of the fatigue behavior of diagonally-cracked CRC deck-girders repaired with CFRP

An investigation of Oregon weight-in-motion data for bridge rating implementation and evaluation

New acoustic emission applications in civil engineering

Influence of diagonal cracks on negative moment flexural anchorage performance in reinforced concrete bridge girders

Laboratory performance of highway bridge girder anchorages under hurricane induced wave loading

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