一种新型结构与保温一体化复合墙板节点试验  

Experimental Study on a New Type of Composite Wall Panel Joint Integrating Load Bearing and Thermal Insulation

作　　者：马少春[1,2] 谷宇[1] 鲍鹏 MA Shaochun;GU Yu;BAO Peng(School of Civil and Architectural Engineering,Henan University,Kaifeng 475004,China;Kaifeng Research Center for Engineering Repair and Material Recycle,Henan University,Kaifeng 475004,China)

机构地区：[1]河南大学土木建筑学院,河南开封475004 [2]河南大学开封市工程修复与材料循环工程技术研究中心,河南开封475004

出　　处：《防灾减灾工程学报》2024年第2期396-403,共8页Journal of Disaster Prevention and Mitigation Engineering

基　　金：中国博士后科学基金资助项目(2018M632805);河南省科技攻关项目(212102310932)资助。

摘　　要：为解决复合墙板节点常见的保温板易燃、易脱落等棘手问题,并使其抗震性能良好。给出了一种新型的结构与保温一体化陶粒混凝土T型复合墙板节点。该复合墙板节点具有夹芯独特构造优势,主要表现在绿色节能,轻质高强,力学性能好,保温系统连接可靠,还能杜绝火灾的发生。通过对T型复合墙板节点进行抗震试验,分别研究了其滞回性能、破坏机理、承载及变形能力、延性、耗能、损伤等。结果表明:一体化复合墙板节点的破坏顺序为腹板-翼缘-节点核心区;薄弱位置主要发生在腹板脚部,混凝土被拉裂或压碎,钢筋被拉长或压弯等;节点核心区受力相对良好,安全储备充足;符合“强节点,弱构件”设计要求和墙板革新发展政策。延性系数大于3,墙板节点安全性能良好。通过损伤指标评估分析,了解了试件各阶段工作状态。In order to address common issues with composite wall panel joints,such as the inflamma-bility and easy detachment of insulation boards,while ensuring their seismic performance,a new type of ceramisite concrete T-shaped composite wall panel joints integrating load-bearing capabilities with thermal insulation was presented.The joints featured a unique sandwich-structured construction that offered several advantages.They were eco-friendly and energy-efficient,lightweight but strong,with good mechanical properties and a reliable insulation system connection.They could also prevent fires.The hysteresis behavior,failure mechanisms,load bearing and deformation capacities,ductility,ener-gy dissipation,and damage of the T-shaped composite wall panel joints were studied through seismic tests.The results showed that the sequence of damage in the integrated composite wall panel joints was from the web,to the flange,and finally to the core area of the joint.Areas of weakness mainly oc-curred at the foot of the web,where the concrete was cracked or crushed and the reinforced bars were stretched or bent.The joint core area demonstrated strong resilience with ample safety margins.The joints were in line with the design requirements of"strong joints,weak components"and policies for wall panel innovation.With a ductility coefficient greater than 3,the safety performance of the joints was good.Through the damage index assessment,the working states of the specimens at each stage were identified.

关 键 词：结构与保温一体化 复合墙板节点 抗震试验 滞回及骨架曲线 损伤指标 

分 类 号：TU375.2[建筑科学—结构工程] TU528