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。
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 .
出处
《工业建筑》
CSCD
北大核心
2014年第8期46-49,共4页
Industrial Construction
基金
北京市自然科学基金重点项目(13H10089)
国家自然科学基金项目(51278010
51248009)
关键词
装配式
钢结构住宅
钢筋桁架
轻质楼板
短期刚度
prefabricated structure
steel residence
steel bar truss
lightweight floor
short-term stiffness
