装配整体式结构模具成型结合面剪切性能试验研究  

EXPERIMENTAL STUDY ON SHEAR PERFORMANCE OF MOLD FORMING BOND SURFACE OF MONOLITHIC PRECAST CONCRETE STRUCTURE

作　　者：于飞 蒋庆[1,2,3] 种迅 冯玉龙[1] 黄俊旗 YU Fei;JIANG Qing;CHONG Xun;FENG Yu-long;HUANG Jun-qi(School of Civil Engineering,Hefei University of Technology,Hefei,Anhui 230000,China;College of Hydraulic and Civil Engineering,Xinjiang Agricultural University,Urumqi,Xinjiang 830000,China;Xinjiang Key Laboratory of Hydraulic Engineering Security and Water Disasters Prevention,Urumqi,Xinjiang 830000,China)

机构地区：[1]合肥工业大学土木与水利工程学院,安徽合肥230000 [2]新疆农业大学水利与土木工程学院,新疆乌鲁木齐830000 [3]新疆水利工程安全与水灾害防治重点实验室,新疆乌鲁木齐830000

出　　处：《工程力学》2024年第S01期165-170,共6页Engineering Mechanics

基　　金：安徽省重点研发计划项目(202104a07020022);国家自然科学基金项目(52178472);“新疆水利工程安全与水灾害防治重点实验室”2022年研究项目(ZDSYS-YJS-2022-11);2022年校级研究生科研创新计划项目(XJAUGRI2022019)。

摘　　要：为提高装配整体式结构中结合面的粘结性能和施工效率,提出一种模具成型结合面。通过Z形直剪试验研究了三种不同成型方式结合面的抗剪性能,主要对比了模具成型和传统成型方式结合面的破坏模式和承载力。结果表明,所有的试件均表现为典型的剪切破坏特征。三种成型方式中,水洗露骨料结合面的抗剪承载力最高,其次是模具成型、凿毛结合面。模具成型与水洗露骨料结合面的抗剪承载力相差1.56%。试件达到峰值承载力前结合面连接钢筋发挥作用较小,界面间抗剪承载力主要取决于粘结力、骨料咬合以及摩擦作用。试件达到峰值承载力后钢筋屈服,随着结合面相对位移的不断增大,钢筋销栓作用和剪摩擦作用主要提供界面间承载力。In order to improve the bonding performance and construction efficiency of joint surfaces in monolithic precast concrete structures,a mold forming joint surface is proposed.The results indicate that all the specimens show typical shear failure characteristics.Among the three molding methods,the washed exposed aggregate joint surface has the highest shear carrying capacity,followed by the molding and chiseled joint surfaces.The difference in shear carrying capacity between the molded and washed exposed aggregate joint surface is 1.56%.Before reaching peak load carrying capacity,the contribution of reinforcements in the joint surface is minimal.The interfacial shear load carrying capacity is primarily dependent on bonding strength,aggregate interlock,and friction.After reaching peak load carrying capacity,the reinforcements yield,and the dowel action and shear friction predominantly contribute to interfacial load carrying capacity with the continuous increase in the relative displacement of the joint surface.

关 键 词：预制混凝土结构 模具成型 结合面 试验研究 力学性能 

分 类 号：TU317[建筑科学—结构工程]