作　　者： ; ; ; ;

机构地区： 浙江大学建筑工程学院土木工程学系

出　　处： 《武汉理工大学学报（交通科学与工程版）》 2004年第5期744-747,共4页

摘　　要： 针对传统 PC梁及钢 -砼组合梁在材料利用率上的缺陷 ,提出一种新型组合梁 .将小径 CFT构件紧密成排布置在钢箱梁受压翼缘 ,同时在受拉区布置预应力筋 .理论分析表明新型结构有着十分优越的力学特性 ,不但可以提高梁的极限强度 ,而且可以更充分利用高强预应力筋 ,同时截面可以做得更小 。 In view of the limitation of exsisting PC beams and steel-concrete composite beams,a new type of composite beam called UCFT beam is proposed.A line of compact CFTs are arranged on the compress section to resist pressure,then prestressed bars are applied to the area suffering from tension.Theoretical analysis indicates that this new type structure gains many superior properties . The ultimate strength of UCFT beams may be improved greatly as well as the characteristics of prestressed bars may be developed to a full degree.And the section of UCFT turns to be more smaller and lighter than traditional beams.It is predicted that the new pattern composite beam might be the most promising structure in the future.

关 键 词： 预应力 钢箱组合梁 极限承载力

领　　域： [建筑科学]