摘要
腹板开洞组合梁在国外工程中已广泛应用。在钢梁腹板上开矩形洞的钢-混凝土组合梁可减少管道对建筑空间的占用,降低工程成本。但腹板洞口的存在影响了组合梁开洞截面的抗弯和抗剪承载力。介绍目前开洞组合梁承载力的计算方法,并利用ANSYS软件对影响腹板开洞组合梁极限承载力的主要因素进行计算分析。结果表明:洞口弯剪比、洞口尺寸、栓钉连接件数量、洞口上方组合板的宽度与厚度、洞口偏心距、混凝土板的横向配筋率对开洞组合梁的承载力均有一定影响,在结构设计时应予以考虑。
Steel-concrete composite beam with web opening is widely used overseas, The existence of web openings has effect on the ultimate strength of composite beams to some extent. Two ways to calculate bearing capacities of steel-composite beams with web opening were introduced. Th; mostly factors were analyzed by nonlinear FE method ANSYS software, which affected the behavior of composite beam with web opening, including M/V, opening height and length, stud numbers under opening, width and height of concrete slab, opening eccentricity and transverse reinforcement ratio of concrete slab, The results could serve as a basis for composite steel-concrete beams with web opening.
出处
《钢结构》
2012年第12期15-20,6,共7页
Steel Construction
关键词
钢与混凝土组合梁
腹板开洞
承载力
影响因素
steel-concrete composite beams
web opening
ultimate strength
influence factors
