建筑钢结构进展2025，Vol.27Issue(10)：13-20,8.DOI:10.13969/j.jzgjgjz.20240511001
模块化轻钢-混凝土夹心复合楼板力学性能研究
Mechanical Performance Study of Modular Light Steel-Concrete Sandwich Composite Floors
摘要
Abstract
Modular light steel-concrete sandwich composite floor is a new type of prefabricated structure,which has the characteristics of high assembly rate,high prefabrication rate,easy connection and light self-weight,etc.In order to determine the flexural bearing capacity and mechanical properties of the joint,the composite floor is tested and analyzed by finite element method.It is found that the composite floor with modular light steel-concrete sandwich has good deformation ability and the specimens show bending failure characteristics.When the composite floor is loaded to the ultimate load,the connection between the composite floor and the steel beam is good,and the joint does not have obvious deformation.On the basis of experimental results,a refined finite element model is established and a variable parameter analysis is carried out.The results show that increasing the longitudinal reinforcement ratio from 0.45%to 1.39%leads to a 108.22%improvement in the ultimate flexural capacity,which indicates that the longitudinal reinforcement ratio is the key parameter affecting the bearing capacity of composite floors.Increasing the thickness of the section steel from 1.2 mm to 2.0 mm results in a 16.17%improvement in the ultimate flexural capacity,indicating that the section steel thickness has a certain influence on the bearing capacity.Increasing the concrete strength from C25 to C50 improves the flexural capacity by only 4.89%,demonstrating the concrete strength has the least influence on the bearing capacity.关键词
装配式建筑/冷弯薄壁型钢/模块化复合楼板/抗弯性能/参数分析Key words
prefabricated construction/cold-formed thin-walled steel/modular composite floor/flexural performance/parameter analysis分类
建筑与水利引用本文复制引用
苏佶智,李维超,杨臻,邵华,乔文涛..模块化轻钢-混凝土夹心复合楼板力学性能研究[J].建筑钢结构进展,2025,27(10):13-20,8.基金项目
河北省杰出青年科学基金项目(E2022210084),国网河北省电力有限公司(河北汇智电力工程设计有限公司科技研发资助项目HZHTCG2023-07) （E2022210084）
