新型钢筋搭接灌浆套筒节点力学性能试验及有限元分析
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摘要
对一种新型钢筋搭接灌浆套筒节点进行了力学性能试验研究和有限元分析。共设计了9组节点试件,变化的参数包括:搭接长度和钢筋直径、套筒壁厚和套筒端部约束方式。通过试验研究得出:套筒壁厚对灌浆料的约束作用较大,壁厚不宜小于5mm;套筒端部不做处理时节点的连接效果更好。基于试验结果采用ABAQUS软件进行了有限元补充分析,通过对比验证了有限元模型各个假设和本构模型取值的合理性。本研究以期为装配式混凝土结构的钢筋连接研究提供参考。
The mechanical properties and finite element analysis of a new type of reinforcing bars lap joint with grouting steel sleeve are carried out. A total of 9 sets of joint specimens were designed with the varied parameters: length of the lap, the diameter and thickness of the sleeve, and the restraint at the end of the sleeve. Through the experimental research, it is concluded that the wall thickness of the sleeve has a great confinement effect on the grouting material and the wall thickness should not be less than 5 mm; the connection performance is better when the end of the sleeve is not treated. Based on the test results, the ABAQUS software is used for the supplementary analysis. The rationality of the assumptions and the constitutive model used in the finite element model is verified. This study is aim to provide reference for the researches on connections of reinforcing bars in the prefabricated concrete structures.
The mechanical properties and finite element analysis of a new type of reinforcing bars lap joint with grouting steel sleeve are carried out. A total of 9 sets of joint specimens were designed with the varied parameters: length of the lap, the diameter and thickness of the sleeve, and the restraint at the end of the sleeve. Through the experimental research, it is concluded that the wall thickness of the sleeve has a great confinement effect on the grouting material and the wall thickness should not be less than 5 mm; the connection performance is better when the end of the sleeve is not treated. Based on the test results, the ABAQUS software is used for the supplementary analysis. The rationality of the assumptions and the constitutive model used in the finite element model is verified. This study is aim to provide reference for the researches on connections of reinforcing bars in the prefabricated concrete structures.
引文
[1] 黄小坤,田春雨.预制装配式混凝土结构的研究[J].住宅产业,2010,(9):28-32.
[2] 李晓明.装配式混凝土结构关键技术在国外的发展与应用[J].住宅产业,2011,(6):16-18.
[3] 李国强,黄小坤,李然,等.带底部后浇区的装配式剪力墙水平拼缝性能试验及有限元分析[J].建筑科学,2014,30(5):45-51.LI Guoqiang,HUANG Xiaokun,LI Ran,et al.Experimental study and FEM analysis on horizontal joint behavior of monolithic precast concrete shear wall with after-pouring part[J].Building Science,2014,30(5):45-51.(in Chinese)
[4] 武立伟,苏幼坡,齐芳,等.装配式 CFST 剪力墙水平接缝变形性能[J].工程抗震与加固改造,2017,39(3):18-22.WU Liwei,SU Youpo,QI Fang,et al.Deformation performance of horizontal seam in assembled CFST shear walls[J].Earthquake Resistant Engineering and Retrofitting,2017,39(3):18-22.(in Chinese)
[5] 王宁,高林,苏幼坡,等.装配式剪力墙竖向钢筋连接性能有限元模拟[J].世界地震工程,2016,32(2):217-221.WANG Ning,GAO Lin,SU Youpo,et al.Finite element study on mechanics performance of vertical reinforcement connection between prefabricated concrete shear walls[J].World Earthquake Engineering,2016,32(2):217-221.(in Chinese)
[6] 陈建伟,苏幼坡.预制装配式剪力墙结构及其连接技术[J].世界地震工程,2013,29(1) :38-47.CHEN Jianwei,SU Youpo.Prefabricated concrete shear wall structure and its connecting technology[J].World Earthquake Engineering,2013,29(1):38-47.(in Chinese)
[7] 郑永峰.GDPS灌浆套筒钢筋连接技术研究[D].南京:东南大学,2016.ZHENG Yongfeng.Research on rebar splicing system by GDPS grout-filled coupling sleeve[D].Nanjing:Southeast University,2016.
[8] YEE AA.Structural and economic benefits of precast/prestressed concrete construction[J].PCI Journal,2001,46(4):34-43.
[9] YEE AA.Social and environmental benefits of precast concrete technology[J].PCI Journal,2001,46(3):14-19.
[10] 崔建宇,孙建刚,王博,等.装配式预制混凝土结构在日本的应用[J].大连民族学院学报,2009,11(1):67-70.CUI Jianyu,SUN Jiangang,WANG Bo,et al.Application of assembling precast concrete structures in Japan[J].Journal of Dalian Nationalities University,2009,11(1):67-70.
[11] 郭彪.日本鹿岛住宅建筑工业化技术与工程实践[J].住宅产业,2012,6:76-80.
[12] 韩玉涛.预制钢管混凝土边框剪力墙钢筋连接技术研究[D].唐山:华北理工大学,2014.HAN Yutao.Rebar connecting technology of precast shear wall with concrete filled steel tube columns[D].Tangshan:Hebei United University,2014.
[2] 李晓明.装配式混凝土结构关键技术在国外的发展与应用[J].住宅产业,2011,(6):16-18.
[3] 李国强,黄小坤,李然,等.带底部后浇区的装配式剪力墙水平拼缝性能试验及有限元分析[J].建筑科学,2014,30(5):45-51.LI Guoqiang,HUANG Xiaokun,LI Ran,et al.Experimental study and FEM analysis on horizontal joint behavior of monolithic precast concrete shear wall with after-pouring part[J].Building Science,2014,30(5):45-51.(in Chinese)
[4] 武立伟,苏幼坡,齐芳,等.装配式 CFST 剪力墙水平接缝变形性能[J].工程抗震与加固改造,2017,39(3):18-22.WU Liwei,SU Youpo,QI Fang,et al.Deformation performance of horizontal seam in assembled CFST shear walls[J].Earthquake Resistant Engineering and Retrofitting,2017,39(3):18-22.(in Chinese)
[5] 王宁,高林,苏幼坡,等.装配式剪力墙竖向钢筋连接性能有限元模拟[J].世界地震工程,2016,32(2):217-221.WANG Ning,GAO Lin,SU Youpo,et al.Finite element study on mechanics performance of vertical reinforcement connection between prefabricated concrete shear walls[J].World Earthquake Engineering,2016,32(2):217-221.(in Chinese)
[6] 陈建伟,苏幼坡.预制装配式剪力墙结构及其连接技术[J].世界地震工程,2013,29(1) :38-47.CHEN Jianwei,SU Youpo.Prefabricated concrete shear wall structure and its connecting technology[J].World Earthquake Engineering,2013,29(1):38-47.(in Chinese)
[7] 郑永峰.GDPS灌浆套筒钢筋连接技术研究[D].南京:东南大学,2016.ZHENG Yongfeng.Research on rebar splicing system by GDPS grout-filled coupling sleeve[D].Nanjing:Southeast University,2016.
[8] YEE AA.Structural and economic benefits of precast/prestressed concrete construction[J].PCI Journal,2001,46(4):34-43.
[9] YEE AA.Social and environmental benefits of precast concrete technology[J].PCI Journal,2001,46(3):14-19.
[10] 崔建宇,孙建刚,王博,等.装配式预制混凝土结构在日本的应用[J].大连民族学院学报,2009,11(1):67-70.CUI Jianyu,SUN Jiangang,WANG Bo,et al.Application of assembling precast concrete structures in Japan[J].Journal of Dalian Nationalities University,2009,11(1):67-70.
[11] 郭彪.日本鹿岛住宅建筑工业化技术与工程实践[J].住宅产业,2012,6:76-80.
[12] 韩玉涛.预制钢管混凝土边框剪力墙钢筋连接技术研究[D].唐山:华北理工大学,2014.HAN Yutao.Rebar connecting technology of precast shear wall with concrete filled steel tube columns[D].Tangshan:Hebei United University,2014.