装配式钢结构新型轻质叠合楼板设计研究
DESIGH STUDY OF THE NEW LIGHT-WEIGHT COMPOSITE FLOOR OF THE PREFABRICATED STEEL STRUCTURE
-
摘要: 在新型钢筋桁架发泡水泥夹芯叠合楼板中应用新型材料发泡水泥,能够实现楼板构件更轻、高效保温,且隔热隔声功能也优于钢筋桁架混凝土楼板。利用换算惯性矩方法对叠合楼板在施工阶段的短期刚度进行研究,得到发泡水泥夹芯叠合楼板的短期刚度计算公式,并通过算例对比研究发泡水泥预制层对楼板截面刚度的贡献作用。结果表明,发泡水泥预制层对截面刚度贡献很小,只占总刚度的10%左右,这主要是由于发泡水泥强度小、弹性模量小,所以在实际简化计算分析时,可不考虑发泡水泥预制层的作用。Abstract: A new style floor slab by steel truss and foam cement is introduced in this paper. Due to the use of the new light-weight material foam cement,the floor slab has advantage over the traditional steel truss slab with concrete in further light-weight,thermal and sound insulation properties. In this paper,the short-term stiffness of the floor during the construction phase was studied by the effective moment of inertia method,and a formula was presented. The contribution of precast foam cement layer to the stiffness of the floor cross-section was analysed by an example. The result shows that the contribution of the foam cement layer is a small part of 10%,mainly due to the low strength and small elasticity modulus of the foam cement. Therefore,to simplify the calculation and analysis ,the role of prefabricated foam cement layer can be ignored.
-
Key words:
- prefabricated structure /
- steel residence /
- steel bar truss /
- lightweight floor /
- short-term stiffness
点击查看大图
计量
- 文章访问数: 149
- HTML全文浏览量: 10
- PDF下载量: 125
- 被引次数: 0