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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

42卷

期数:

2025年06期

页码:

57-67

栏目:

建筑结构

出版日期:

2025-11-25

文章信息/Info

Title:

Study on flexural performance test and design method of U-shaped steel-clad concrete composite beam

文章编号:

1673-2049(2025)06-0057-11

作者:

王静峰^1,2,王泽兴¹,徐文杰^1,3,郑齐敬⁴

(1. 合肥工业大学 土木与水利工程学院,安徽 合肥 230009; 2. 合肥工业大学 土木工程结构与材料安徽省重点实验室,安徽 合肥 230009; 3. 合肥工业大学 水泥基材料低碳技术与装备教育部工程研究中心,安徽 合肥 230009; 4. 安徽中科榫卯建筑科技有限公司,安徽 合肥 230088)

Author(s):

WANG Jingfeng^1,2, WANG Zexing¹, XU Wenjie^1,3, ZHENG Qijing⁴

(1.College of Civil and Hydraulic Engineering,Hefei University of Technology,Hefei 230009,Anhui,China;2.Anhui Key Laboratory of Civil Engineering Structural Materials,Hefei University of Technology,Hefei 230009,Anhui,China;3.Engineering Research Center of Low Carbon Technology and Equipment for Cement-based Materials,Ministry of Education,Hefei University of Technology,Hefei 230009,Anhui,China;4.Anhui Zhongke Mortise and Tenon Building Technology Co.,Ltd,Hefei 230088,Anhui,China)

关键词:

U型钢包覆混凝土组合梁;  受弯承载力;  榫卯搭接;  插筋抗剪连接件

Keywords:

U-shaped steel-clad concrete composite beam;  flexural capacity;  mortise and tenon joint;  insert steel bar type shear connector

分类号:

TU398.9

DOI:

10.19815/j.jace.2024.06007

文献标志码:

A

摘要:

为研究新型U型钢包覆混凝土组合梁的受弯性能和破坏模式,对4根U型钢包覆混凝土组合梁进行受弯性能试验,揭示了试件的荷载-跨中挠度曲线、荷载-应变曲线规律,探究了组合梁受弯机理和协同工作模式,并根据其破坏模式分析了组合梁的受力性能。试验中采用插筋作为组合梁抗剪连接件,研究了组合梁在正、负弯矩作用下的受弯承载力以及榫卯搭接构造的影响。基于试验数据提出了新型U型钢包覆混凝土组合梁的受弯承载力计算方法。结果表明:U型钢包覆混凝土组合梁试件呈现出正截面受弯破坏模式且具有良好的受弯性能与延性; 同等条件下,正弯矩作用下组合梁受弯承载力比负弯矩作用下高且延性好,前者抗弯承载力比后者高30%～40%,延性高20%～30%; 榫卯搭接构造能实现完全共同工作且能有效提高组合梁的整体受弯承载力,含榫卯搭接构造的组合梁试件抗弯承载力比不含榫卯搭接的组合梁高20%～30%,但前者延性比后者低50%～55%; 基于换算截面法提出的组合梁正、负弯矩作用下受弯承载力计算方法准确可靠,可应用于实际工程中。

Abstract:

In order to study the flexural performance and failure mode of the new type of U-shaped steel-clad concrete composite beam, the flexural performance test of 4 U-shaped steel-clad concrete composite beams was carried out. The load-middle span deflection curve and load-strain curve of the specimens were revealed. The flexural mechanism and cooperative work of the composite beams were explored, and the mechanical behavior of the composite beams was analyzed according to their failure mode. In the test, inserts were used as the shear joints of composite beams, and the bending capacity of composite beams under the action of positive and negative bending moments and the influence of mortise and tenon joint structure were studied. Based on the test data, a method for calculating the flexural capacity of the new type of U-shaped steel-clad concrete composite beam was presented. The results show that the composite beam specimens exhibit normal section bending failure mode and have good flexural performance and ductility. Under the same conditions, the composite beam under positive bending moment has higher bending capacity and better ductility than that under negative bending moment. The flexural capacity of the former is 30%-40% than that of the latter, and the ductility is 20%-30% higher. The mortise and tenon joint structure can realize full joint operation and can effectively improve the overall bending capacity of the composite beam. The flexural capacity of the composite beam with mortise and tenon joint structure is 20%-30% higher than that of the composite beam without mortise and tenon joint structure, but the ductility of the former is 50%-55% lower than that of the latter. The calculation method of flexural capacity of composite beams under positive and negative bending moments based on converted section method is accurate and reliable, and can be applied to practical engineering.

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相似文献/References:

[1]黄海林,周福林,言 兴,等.GFRP型材-混凝土组合梁受弯性能试验[J].建筑科学与工程学报,2021,38(02):79.[doi:10.19815/j.jace.2020.05034]
　HUANG Hai-lin,ZHOU Fu-lin,YAN Xing,et al.Experiment on Flexural Behavior of GFRP Profile-concrete Composite Beams[J].Journal of Architecture and Civil Engineering,2021,38(06):79.[doi:10.19815/j.jace.2020.05034]
[2]白 亮,宋莉莎,许卓轩,等.开口型压型钢板-ECC组合楼板受力性能试验研究及数值模拟[J].建筑科学与工程学报,2024,41(04):20.[doi:10.19815/j.jace.2024.02001]
　BAI Liang,SONG Lisha,XU Zhuoxuan,et al.Experimental investigation and numerical simulation on mechanical behavior of opened profiled steel sheet-ECC composite slabs[J].Journal of Architecture and Civil Engineering,2024,41(06):20.[doi:10.19815/j.jace.2024.02001]

备注/Memo

备注/Memo:

收稿日期:2024-06-05
基金项目:国家自然科学基金项目(52278170); 安徽省科技创新平台重大科技项目(202305a12020013)
作者简介:王静峰(1976-),男,工学博士,教授,博士生导师, E-mail:jfwang008@163.com。

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更新日期/Last Update: 2025-11-25