同济大学学报（自然科学版）2025，Vol.53Issue(10)：1490-1498,1605,10.DOI:10.11908/j.issn.0253-374x.24167
新型上部纵筋外置预制叠合梁抗弯性能研究
Bending Performance of Novel Prefabricated Reinforced Concrete Composite Beams with Externally Placed Upper Longitudinal Bars
刘威 1郭建华 2段雄 3郭小农 3周森 4杨芸2
作者信息
- 1. 同济大学 土木工程学院,上海 200092||上海宝冶集团有限公司,上海 200941
- 2. 上海宝冶工程技术有限公司,上海 200941
- 3. 同济大学 土木工程学院,上海 200092
- 4. 上海宝冶集团有限公司,上海 200941
- 折叠
摘要
Abstract
Currently,when prefabricating reinforced concrete composite beams in factories,the upper longitudinal bars are typically not directly tied into the rebar cage.Instead,the upper longitudinal bars are passed through the cage and tied on-site,which makes the construction process more difficult and less efficient.To address this issue,this paper proposed a connection design where the upper longitudinal bars were directly placed above the hoop and tied.Two types of hoops were designed:one with a groove and one without.Bending tests were conducted on cast-in-place beams,traditional prefabricated composite beams,and the novel prefabricated composite beams with externally placed upper longitudinal bars,all of which had identical dimensions,concrete grades,and reinforcement configurations.Numerical simulations of the tests were performed using ABAQUS software to investigate the influence of the new tying method on the mechanical properties of the beams.The results indicate that the novel prefabricated composite beams exhibit similar load-bearing capacity to traditional prefabricated composite beams,slightly lower than that of cast-in-place beams.This suggests that the proposed method of tying the upper longitudinal bars is safe and reliable,with promising potential for practical application in engineering.关键词
预制叠合梁/纵筋外置/ABAQUS软件/极限承载力Key words
prefabricated composite beam/externally placed longitudinal bars/ABAQUS/ultimate bearing capacity分类
建筑与水利引用本文复制引用
刘威,郭建华,段雄,郭小农,周森,杨芸..新型上部纵筋外置预制叠合梁抗弯性能研究[J].同济大学学报（自然科学版）,2025,53(10):1490-1498,1605,10.
