钢-混凝土组合梁与非组合梁的设计对比

本文根据《钢结构设计规范》(GBJ17-88)中的规定,按极限状态设计法对钢-混凝土组合梁与非组合梁进行了工程实例设计计算对比,表明组合梁结构有很大优越性,比非组合梁结构可降低梁高,提高结构刚度,从而可降低工程造价,加快施工进度,本例计算可少用钢材30%以上,挠度减少15%～65%。

COMPARISON BETWEEN COMPOSITE BEAM AND NONCOMPOSITE BEAM IN DESIGN

This paper presents the comparison between two design and calculation examples of the compositebeam and noncomposite beam designed according to the limit state theory and "design specification forsteel structures" (GBJ17-88). It shows that the composite beam has such advantages as smaller depth,higher structural stiffness, lower costs and shorter construction time. Its demand for steels can beveduced by more than 30%, and its deflection by 15% to 65%.