土木与环境工程学报（中英文）2024，Vol.46Issue(4)：151-158,8.DOI:10.11835/j.issn.2096-6717.2023.071
预制钢-混凝土组合楼梯抗弯性能与舒适度分析
Analysis of flexural performance and comfort on prefabricated steel-concrete composite stair
摘要
Abstract
In order to promote the application of composite materials in building structures,a study was conducted on the flexural performance and overall comfort of prefabricated steel-concrete composite stair treads.Six stair tread specimens were tested using a four-point bending test,focusing on the influence of the shear reinforcement and the connection method between the tread and the stringer on the load-bearing performance of the stair treads.The test results showed that compared to angle steel and bolt shear reinforcement,channel steel shear reinforcement significantly improved the load-bearing capacity of the stair treads.Moreover,the load-bearing capacity of the welded specimens was less affected by the shear reinforcement and higher than that of the simply supported specimens.This indicates that welding can be considered as the primary connection method between the steel-concrete composite stair treads and stringers in future engineering applications.To accurately study the mechanical behavior of the stair treads,ABAQUS software was used to model the stair treads.The finite element model accurately simulated the mechanical behavior of the stair treads.Based on the validation of the model accuracy,a comfort analysis was conducted on the overall stairs.The natural frequency of the stairs and the acceleration response under human-induced excitation were within the specified limits,satisfying the comfort requirements for walking.The stairs will not cause any noticeable discomfort during use,meeting the requirements of ergonomics.The test and modeling analysis have proved that channel steel shear reinforcement provided a significant improvement in the load-bearing capacity of the stair treads Welding can be considered as the primary connection method between the stair treads and stringers,and the comfort analysis showed that the stairs met the specified requirements.关键词
钢-混凝土组合楼梯/抗弯试验/有限元模拟/舒适度Key words
steel-concrete composite stairs/flexural test/finite element simulation/comfort analysis分类
建筑与水利引用本文复制引用
何传民,侯和涛,张少远,张秀璇,房海波,李海生..预制钢-混凝土组合楼梯抗弯性能与舒适度分析[J].土木与环境工程学报（中英文）,2024,46(4):151-158,8.基金项目
山东省重大科技创新工程项目(2021CXGC011205) （2021CXGC011205）
"海右名家"产业领军人才支持工程 The Key R&D Plan of Shandong Province for Major Scientific and Technological Innovation Projects(No.2021CXGC011205) （No.2021CXGC011205）
Industrial Leading Talent Support Project Named"Haiyoumingjia" （）
