装配式混凝土结构灌浆套筒连接性能试验研究  

Experimental Study on the Connection Performance of Grouting Sleeve in Prefabricated Concrete Structure

作　　者：郝雨杭[1,2] 孙硕科 韩少杰 付素娟 HAO Yuhang;SUN Shuoke;HAN Shaojie;FU Sujuan(Hebei Construction Research Technology Co.,Ltd.,Shijiazhuang 050227,China;Hebei Institute of Green Building Industry Technology Research,Shijiazhuang 050227,China;Hebei University of Architecture,Zhangjiakou 075000,China;Hebei Engineering Research Center of Preiabricated Housing(Preparation),Shijiazhuang 050227,China;Hebei Academy of Building Research Co.,Ltd.,Shijiazhuang 050227,China)

机构地区：[1]河北建研科技有限公司,河北石家庄050227 [2]河北省绿色建筑产业技术研究院,河北石家庄050227 [3]河北建筑工程学院,河北张家口075000 [4]河北省装配式住宅工程研究中心(筹),河北石家庄050227 [5]河北省建筑科学研究院有限公司,河北石家庄050227

出　　处：《粉煤灰综合利用》2022年第3期1-5,共5页Fly Ash Comprehensive Utilization

基　　金：中央引导地方科技发展专项资金项目(19944214G);河北省建设科技研究计划项目(2017-2017)。

摘　　要：灌浆套筒的连接性能直接影响装配式连接节点的抗震性能与结构的整体安全性。试验设置了不同型号、不同灌浆缺陷的半灌浆套筒试件,对灌浆套筒试件进行单向拉伸试验,研究灌浆饱满度、钢筋居中与偏心布置、钢筋直径、后补灌浆料对套筒灌浆连接接头极限抗拉强度以及套筒变形性能的影响。试验结果表明:当灌浆饱满度为50%,套筒试件为钢筋拔出破坏;当灌浆饱满度为60%及以上,套筒试件为钢筋拉断破坏;同一型号灌浆套筒灌浆越饱满,拉拔后试件的伸长越小;钢筋偏心布置会导致灌浆料握裹力降低,试件延性增加,而对钢筋发生断裂破坏的试件极限承载力影响很小,对于钢筋被拔出的试件,承载力会下降;增大钢筋直径,可以显著提高承载力;对前期饱满度低的套筒进行补浆操作可以有效提升其极限荷载,弥补灌浆缺陷。The connection performance of grouting sleeve directly affects the seismic performance of fabricated connection joints and the overall safety of the structure.Semi grouted sleeve specimens with different types and grouting defects were set up in the test.The effects of grouting fullness,reinforcement centering and eccentric arrangement,reinforcement diameter and post grouting material on the ultimate tensile strength of sleeve grouting connection joint and sleeve deformation were studied.The test results show that when the grouting fullness is 50%,the sleeve specimen is pulled out and damaged by reinforcement;when the grouting plumpness is 60%or more,the sleeve specimen is broken by reinforcement tension;the fuller the grouting sleeve of the same model,the smaller the elongation of the specimen after drawing;the eccentric arrangement of reinforcement will reduce the binding force of grouting material and increase the ductility of specimens,but have little effect on the ultimate bearing capacity of specimens with fracture failure of reinforcement,and the bearing capacity of specimens be pull-out of reinforcement will decrease;increasing the diameter of reinforcement can significantly improve the bearing capacity;the grouting operation on the sleeve with low plumpness in the early stage can effectively improve its limit load and make up for grouting defects.

关 键 词：装配式混凝土结构 灌浆套筒接头 单向拉伸试验 抗拉强度 

分 类 号：TU317[建筑科学—结构工程]