Abstract: Two impact studies on a small span, composite girder highway bridge have given widely scattered impact fractions, with a maximum of 1.32, compared with the AASHTO code value of 0.30 for this bridge. Field strains were used ...

Abstract: This paper describes further field measurements of the impact fraction,

Abstract: A vertical shear connector suitable for manufacture by automated sheet metal processes from steel coil is developed in an experimental program involving 90 small area bearing tests, 18 shear tests, and 6 tension tests. A ...

Abstract: Earlier impact studies on a small‐span bridge under service loads gave impact fractions much higher than, those specified by AASHTO. This paper represents the first stage of a program to identify the high‐impact vehicles. ...

Abstract: Laboratory tests are described that explore the validity of using bridge measurements to determine not only equivalent static wheel loads but also their dynamic variation with time. A 12.2‐m span composite girder was loaded ...

Abstract: This paper suggests a simple vehicle model that may be used to estimate impact in highway bridges. In this model each axle load consists of a constant load together with a sinusoidally varying dynamic component with a ...

Abstract: Laboratory experiments on an International ACCO 1810A truck rear suspension unit are used to assess the validity of mathematical models for the tire and spring. Best results are achieved with tire and spring models that ...