A method for calculating ultimate flexural strength of preflex composite beam with the elasto-plastic effect of steel;

Research on elastic-plastic ultimate capacity of preflex beam bridges;

This paper introduced the fundamental of preflexed beam; Aggregated the research development of preflexed beam at home and abroad in the past years; Discussed the material modeling and selected the stress-strain relationship of steel and concrete which is suitable for the nonlinear analysis of preflex beam; In.

Analytical theory and test study of longterm properties for the preflexed beam;

Based on the construction peculiarity of preflexed beam bridges,an analytical method is proposed for predicting properties of bridges structures.

To analyze the composite effect of Steel-precast concrete beams under static loads,three tests of steel-precast concrete composite beams under static concentrate lateral loads were performed.