Abstract
This chapter discusses the spatial stress analysis for large cantilevered steel-concrete composite bridge decks. The spatial finite element analysis for the large cantilevered steel-concrete composite bridge deck of HongShan Bridge, a 206-meter-span cable-stayed bridge, is carried out using three-dimensional (3-D) solid elements and shell elements in the chapter. The load distribution patterns of steel cantilevered beams under live loads and the stress characteristics of steel-concrete composite bridge decks under various loading cases are computed in the chapter. The stability of steel cantilevered beams under several loading cases in the construction and operation stage and the transverse shear lag effects of concrete carriageway decks are analyzed and studied in the chapter. The simple model of three beams can be used to calculate the composite bridge deck supported by paralleling large steel cantilevers with a variable box section.
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