开孔薄壁钢梁-轻骨料混凝土装配式组合楼板受力性能试验研究
发布时间：2019-04-20 17:46
【摘要】：为研究开孔薄壁钢梁-轻骨料混凝土组合楼板的受力性能,设计并制作了5块具有不同构造(不同预制板型、抗剪方式及腹板开孔率)的组合楼板试件,进行了简支条件下均布加载受力性能试验研究。结果表明:该组合楼板具有较高的整体刚度和承载能力,当等效均布荷载达到6 k N/m~2时,跨中挠度远小于L/500(L为试件跨度);对于相同的开孔率,薄壁钢梁腹板的开孔应优选孔径小、数量多的开孔形式;采用文中所构造的抗剪键及其布置形式的组合楼板,其抗剪效果明显优于采用结构胶黏结混凝土板和钢梁的;组合效应系数可以较好地反映组合楼板的整体特性及内部损伤。
[Abstract]:In order to study the mechanical properties of thin-walled steel beam-lightweight aggregate concrete composite slab with holes, five composite slab specimens with different structures (different prefabricated plate type, shear resistance and web opening ratio) were designed and fabricated. An experimental study was carried out on the performance of uniform load under the condition of simple support. The results show that the composite floor has high overall stiffness and bearing capacity. When the equivalent uniform load reaches 6 k N/m~2, the mid-span deflection of the composite floor is much smaller than that of L ~ (5) 500 (L is the span of the specimen). For the same opening rate, the thin-walled steel beam web should be optimized for a small pore size and a large number of openings. The shear resistance effect of the composite slab with shear bond and its arrangement is obviously better than that with structural adhesive concrete slab and steel beam, and the composite effect coefficient can better reflect the overall characteristics and internal damage of the composite slab.
【作者单位】： 宁波大学建筑工程与环境学院;
【基金】：国家自然科学基金项目(51278254,51078187)
【分类号】：TU398.9
[Abstract]:In order to study the mechanical properties of thin-walled steel beam-lightweight aggregate concrete composite slab with holes, five composite slab specimens with different structures (different prefabricated plate type, shear resistance and web opening ratio) were designed and fabricated. An experimental study was carried out on the performance of uniform load under the condition of simple support. The results show that the composite floor has high overall stiffness and bearing capacity. When the equivalent uniform load reaches 6 k N/m~2, the mid-span deflection of the composite floor is much smaller than that of L ~ (5) 500 (L is the span of the specimen). For the same opening rate, the thin-walled steel beam web should be optimized for a small pore size and a large number of openings. The shear resistance effect of the composite slab with shear bond and its arrangement is obviously better than that with structural adhesive concrete slab and steel beam, and the composite effect coefficient can better reflect the overall characteristics and internal damage of the composite slab.
【作者单位】： 宁波大学建筑工程与环境学院;
【基金】：国家自然科学基金项目(51278254,51078187)
【分类号】：TU398.9
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