![]() With the penetration of the impactor, the damaged impact zone behaved as a “hinge” which moved upward due to the heavy weight of both overhangs. The failure of the PC girder was first introduced by punching shear around the impact zone. An AASHTO Type-I prestressed concrete (PC) girder and a Hybrid Composite Beam (HCB) bridge were tested using this facility, which led to a realistic level of damage and mechanism analysis of bridge superstructures under lateral impact loading as described in this dissertation. Also, finite element method (FEM) has largely been used to analyze the complicated collision mechanism.Ī full-scale lateral impact testing facility was designed and built on a construction site in Knoxville, Tennessee, United States. ![]() Previous researchers have conducted a number of small-scale tests to study the impact process. However, this issue is not fully addressed in current bridge specifications. The increasing occurrence of over-height vehicle collisions with bridges in the United States leads to concern about the damage due to lateral impact to bridge superstructures by over-height vehicles. ![]()
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