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Damage Estimation of Existing Bridge Structures
During recent earthquakes, severe damage have been reported in many bridge structures. Regardless of many damaged structures, methods to identify damage of structures are still limited...

Finite Element Analysis of a Highway Bridge Hinge
A highway bridge hinge is a very important element in bridge design. It releases thermal stresses that may be developed in the superstructure or the substructure of a bridge. A common...

Inelastic Behavior of Noncompact Steel Bridge Girders
This paper highlights the results from one of several finite element studies of the inelastic moment-rotation behavior of continuous-span non-compact bridge girders at interior-pier locations....

Composite Beams and Joists
Composite beams and joists used as flexural members in multistory steel-frame buildings are considered. Research results have shown that present design values for headed shear studs, used...

Wood Bridge Design Using AASHTO LRFD Specifications
A nationwide project to develop a load and resistance factor (LRFD) design edition of the American Association of State Highway and Transportation Officials (AASHTO) Standard Specifications...

Design Optimization of an All-FRP Short-Span Bridge
The objectives of this study are: a) to determine the feasibility of designing an all-FRP bridge, and b) to demonstrate the usefulness of optimization techniques in the design of FRP superstructures....

Design of Built Up Compression Members for Long Span Bridge Structures
This paper discusses the design of built up compression members for long span bridge structures including trusses and arches. Provisions of load factor design and use of high strength...

Analysis of the Seismic Records of a Suspension Bridge
A well-instrumented suspension bridge in Los Angeles, was shaken by the October 1, 1987 Whittier earthquake (M_L = 5.9). This study addresses the...

Vibration and Impact in Skewed Steel Bridges
The vibration and impact of skewed multigirder bridges due to vehicles moving across rough bridge deck are studied. The bridges are modeled as grillage beam systems. The vehicle is simulated...

Ambient Vibration Response of a Long Span Bridge
Natural frequencies, mode shapes and damping characteristics for a long-span cable-stayed bridge were experimentally determined from a series of ambient vibration tests for both the cantilever...

Instrumentation Considerations for Nondestructive and Destructive Testing of Reinforced Concrete Slab Bridges
This paper examines the process of selection and calibration for instruments used in nondestructive and destructive field tests of a reinforced concrete slab bridge. Of great importance...

Magnetic Flux Leakage for Bridge Inspection
For many years the Federal Highway Administration and before that the Bureau of Public Roads had focused its nondestructive evaluation program on development of better tools to inspect...

Remote Monitoring of a Stressed Timber Bridge Deck
The long term behavior of a CCA treated stressed timber deck bridge is being monitored, at present, using a remote data acquisition system. The bridge which is located in Gray, Maine was...

Performance Monitoring of Concrete Structures with Embedded Sensors
This paper describes the use of embedded fiber optic sensors to monitor the performance of reinforced concrete structures. The fiber optic sensors are capable of measuring vibrations,...

Monitoring Performance of Full Scale Structures
General Physics Services Corporation (GPSC) of Columbia, Maryland has developed a device for the remote long-term monitoring of full scale structures, such as highway bridges. This patented...

Full Scale Dynamic Monitoring of Highway Bridges
Sensitivity of identified modal properties by physical testing is critical for automated monitoring of bridge structural condition. It is investigated here considering flexure modes and...

Coolidge Dam Abutment Stability and Stabilization
This paper focuses on left abutment stability assessments and stabilization measures at Coolidge Dam, Arizona. Initial assessment of abutment stability was based on limited rock strength...

Supply-Side Solutions
Although the crumbling bridge infrastructure has received much attention in the press and the engineering community over the past few years, the number of structurally deficient bridges...

Marginal Overweight Operating Scenario for DOE's Initiative I Highway Casks
This paper assesses the potential transport of high-capacity Initiative I highway casks under development by the Office of Civilian Radioactive Waste Management (OCRWM) as permitted marginal...

Alternatives Analysis Using Two-Dimensional Modeling for the Owensboro Bridge and Approaches
The Federal Highway Administration plans to design and construct a new bridge over the Ohio River near Owensboro Kentucky. A hydraulic model with two-dimensional capabilities was utilized....

 

 

 

 

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