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Inelastic Analysis of Steel Multigirder Highway Bridges (Overloading Behavior of Steel Highway Bridges)

机译：钢质多梁公路桥梁的非弹性分析（钢结构公路桥梁超载行为）

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The report presents a methodology developed to predict the elastic and inelastic response of highway bridge superstructures. Simple span or continuous multigirder bridges with steel girders and reinforced concrete deck are considered. Inelastic behavior of the bridge is modeled through the use of nonlinear stress-strain curves for concrete, reinforcing steel and structural steel. Initiation of the damage to the superstructure in the form of cracking or crushing of concrete and yielding of the steel is detected, progression of the damage is monitored, and load versus deformation, and damage to the bridge, is developed until the attainment of the collapse of the structure. The developed method and the corresponding computer program BOVAS (Bridge OVerloading Analysis-Steel) are designed to predict the overload response of the types of bridges described above. The accuracy and applicability of the method is illustrated by applying the method to four bridge overload tests that had been conducted elsewhere and reported in the literature. Good agreement between the test results and analytical prediction is noted.

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