钢筋桁架混凝土空心叠合板静力性能试验与破坏分析  

Static performance and failure analysis of reinforced truss concrete hollow composite slab

作　　者：陈旭东 马芹永[1,3] CHEN Xudong;MA Qinyong(School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,China;College of Civil Engineering,Anhui Jianzhu University,Hefei 230601,China;National-local Joint Engineering Laboratory of Building Health Monitoring and Disaster Prevention Technology,Hefei 230601,China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001 [2]安徽建筑大学土木工程学院,安徽合肥230601 [3]建筑健康监测与灾害预防技术国家地方联合工程实验室,安徽合肥230601

出　　处：《浙江大学学报(工学版)》2025年第3期480-487,共8页Journal of Zhejiang University:Engineering Science

基　　金：建筑健康监测与灾害预防国家地方联合工程实验室开放课题资助项目(GG22KF001);安徽省住房城乡建设科学技术计划资助项目(2022-YF083).

摘　　要：结合现浇空心板与预制钢筋桁架混凝土叠合板的优点,提出内置空心薄壁箱的钢筋桁架混凝土叠合板.进行5块钢筋桁架混凝土空心叠合板、1块钢筋桁架混凝土现浇空心板在单调荷载作用下的静力足尺模型受弯性能试验.分析板的破坏形态、受弯承载力、截面整体工作性能、裂缝分布、钢筋应变、混凝土应变等.结果表明:空心叠合板在正常使用状态下,未出现沿叠合面开展的水平裂缝,预制层与现浇层协调工作性能良好;破坏过程符合适筋破坏的破坏特征;板底出现多条均匀分布的裂缝,整体变形性能较好;空心叠合板在开裂后仍有充分的承载力安全储备;极限承载力的试验值和理论值基本一致,误差均小于6.0%,满足规范规定;同一尺寸规格的预制空心叠合板与现浇空心板的整体受力性能较接近,均可满足工程设计要求.A reinforced truss concrete composite slab with a built-in hollow thin-walled box was proposed,which combined the advantages of the cast-in-place hollow slab and the prefabricated reinforced truss concrete composite slab.Static full-scale model bending performance tests were conducted on five reinforced truss concrete hollow composite slabs and a reinforced truss concrete cast-in-place hollow slab under monotonic load.The failure mode,bending bearing capacity,overall working performance of the section,crack distribution,steel strain,and concrete strain of the plate were analyzed.Results showed that under regular use,there was no horizontal crack along the composite surface of the laminated hollow slab,and the coordination performance between the prefabricated layer and the cast-in-place layer was good.The failure process conformed to the characteristics of suitable reinforcement failure.Multiple evenly distributed cracks appeared at the bottom of the board,resulting in good overall deformation performance.Composite hollow slabs still had sufficient load-bearing capacity and safety reserves after cracking.The experimental and theoretical values of the ultimate bearing capacity were consistent,with an error of within 6.0%,meeting the specifications.The overall stress performance of the prefabricated composite hollow slabs with the same size and specification was relatively similar to that of cast-in-place hollow slabs,so both of them could meet the engineering design requirements.

关 键 词：空心叠合板 钢筋桁架 静力试验 受弯性能 破坏分析 

分 类 号：TU375.2[建筑科学—结构工程] TU317.1