夹心保温复合墙板GFRP-Y形拉结件受力性能研究  

Research on the mechanical performance of GFRP-Y type tension components in sandwich insulation composite walls

作　　者：郭孟攀 陈国新 张轶琛 刘健[1] GUO Mengpan;CHEN Guoxin;ZHANG Yichen;LIU Jian(College of Water Conservancy and Civil Engineering,Xinjiang Agricultural University,Urumqi 830052,China;College of Civil Engineering&Architecture,Jiaxing University,Jiaxing 314001,China)

机构地区：[1]新疆农业大学水利与土木工程学院,乌鲁木齐830052 [2]嘉兴大学建筑工程学院,嘉兴314001

出　　处：《复合材料科学与工程》2025年第3期96-105,共10页Composites Science and Engineering

基　　金：新疆维吾尔自治区高校科研计划(XJEDU2020I011);嘉兴市科技计划项目(2023AZ31007);嘉兴学院启动基金项目(CD70522018)。

摘　　要：为研究夹心保温复合墙板GFRP拉结件的承载力和挠曲变形,以不同厚度的保温层为试验变量,开展了六组单根GFRP-Y形拉结件的抗剪试验及数值模拟,分析拉结件的破坏形态及荷载-位移曲线特征,基于两端固定超静定梁模型,提出了单根拉结件考虑保温层时的挠度简化计算公式。结果表明:夹心保温复合墙板在竖向荷载作用下的破坏形式均为拉结件断裂破坏,保温层厚度为90 mm试件的极限抗剪承载力相较于厚度为70 mm试件极限抗剪承载力减小了23.5%,此时内、外叶板相对位移增加了12.0%;保温层厚度从60 mm增加至100 mm,拉结件的极限抗剪承载力降低39.1%,挠度增加44.1%。研究结果可为夹心保温复合墙板外叶板的位移计算提供理论依据。To research the bearing capacity and deflection of GFRP shear connectors in sandwich insulation composite wall panels,with the thickness of insulation layer as the experimental variable,six sets of single GFRP-Y-shaped shear connectors were subjected to shear tests and numerical simulations.The failure modes and load-displacement curve characteristics of the shear connectors were analyzed.Based on a simply supported over-determinate beam model,a simplified calculation formula for deflection considering the insulation board was proposed for a single shear connector.The results showed that the failure mode of the sandwich insulation composite wall panels under vertical load was shear connector fracture.The ultimate shear capacity of the specimen with an insulation layer thickness of 90 mm decreased by 23.5%compared to the specimen with a thickness of 70 mm,while the relative displacement between the inner and outer face sheets increased by 12.0%.As the insulation layer thickness increased from 60 mm to 100 mm,the ultimate shear capacity of the shear connector decreased by 39.1%,and the deflection increased by 44.1%.The research results can provide theoretical basis for calculating the displacement of the outer face sheet in sandwich insulation composite wall panels.

关 键 词：夹心保温复合墙板 GFRP拉结件 保温层厚度 抗剪承载力 挠度 

分 类 号：TB332[一般工业技术—材料科学与工程]