工型截面上翼缘宽度对组合梁承载力分析

Analysis of the Flange Width of Form Cross Section on the Bearing Capacity of Composite Beams

钢筋混凝土结构自重大,抗裂性能差,且一旦损坏则难以修复,因此在其使用过程中受有较大的局限性。钢结构因强度优异而刚度受限宜失稳。钢-混凝土组合结构能充分发挥钢与混凝土两种材料各有的优势,分别提高了结构的承载能力、刚度、抗震性能和结构延性,并且造价较钢结构低,施工又比钢筋混凝土结构方便。本文针对钢-混凝土组合梁,当组合梁高度和受压混凝土翼板厚度不变时,以组合梁中钢梁上翼缘的宽度为变化参数,分析了组合梁上翼缘宽度的变化对受弯承载力的影响,为组合梁的设计提供了参考。

The reinforced concrete structure is self-heavy and has poor crack resistance,and once it is damaged, it is difficult to repair.Therefore, it has greater limitations in its use.Steel-concrete composite structure can give full play to the advantages of both steel and concrete materials,respectively,improve the bearing capacity, stiffness,seismic performance and structural ductility of the structure,and the cost is lower than the steel structure,and the construction is more convenient than the reinforced concrete structure.For steel-concrete composite beams,when the height of the composite beam and the thickness of the compression concrete wing are constant,the width of the upper flange of the steel beam in the composite beam is used as the change parameter, and the influence of the variation of the width of the upper flange of the composite beam on the bending capacity is analyzed.Provides a reference for the design of composite beams.