山东建筑大学学报2025，Vol.40Issue(3)：107-114,8.DOI:10.12077/sdjz.2025.03.014
混凝土底板钢筋桁架板适用跨度研究
Research on the applicable span of steel-bars truss slab with concrete bottom slab
雷淑忠 1郭书涵 1王立玉 1李冬磊 2霍兴中2
作者信息
- 1. 山东建筑大学 土木工程学院,山东 济南 250101
- 2. 滨州市宏基建材有限公司,山东 滨州 256600
- 折叠
摘要
Abstract
Applicable span analysis of the steel-bars truss slab with concrete bottom slab(HJ steel-bars truss slab)helps to ensure the safe use of the slab during construction.Three methods,including finite element analysis,conversion section formula,and load test,are used in this paper to determine the optimal applicable span of HJ steel-bars truss slab types with and without support in the middle of span through controlling the deflection of HJ steel-bars truss slab,cracking of the prefabricated concrete bottom slab,and stress of the steel-bars truss members.The results show that the decisive factor for the applicable span size of HJ steel-bars truss slab during construction is that the prefabricated concrete bottom slab does not crack.When determining applicable span of HJ steel-bars truss slab types,the simplified formula under the control of tensile stress in the concrete bottom slab can be used for calculation according to the thickness of the slab and the value of the load.When the thickness of the composite slab is between 100 mm and 210 mm,the applicable spans of HJ steel-bars truss slab without support are between 1.8 m and 3.6 m,and the applicable spans when one support is set in the middle of the span are between 4.1 m and 7.2 m.关键词
混凝土底板钢筋桁架板/适用跨度/裂缝控制/均布荷载/有限元分析Key words
steel-bars truss slab with concrete bottom slab/applicable span/crack control/uniform load/finite elements analysis分类
建筑与水利引用本文复制引用
雷淑忠,郭书涵,王立玉,李冬磊,霍兴中..混凝土底板钢筋桁架板适用跨度研究[J].山东建筑大学学报,2025,40(3):107-114,8.
