钢筋套筒灌浆搭接连接的预制框架柱抗震试验
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摘要
为研究竖向钢筋采用新型套筒灌浆搭接连接的预制柱的抗震性能,在已研发的Ⅰ、Ⅲ型套筒灌浆搭接接头的基础上进行了1个现浇柱、2个预制柱的拟静力试验.试验现象如下:现浇柱的初始水平裂缝出现在根部,预制柱由于套筒约束了混凝土的竖向应变,初始水平裂缝出现在套筒顶面;极限状态下现浇柱压碎区段长,预制柱压碎区段短.试验结果表明:预制柱的开裂、屈服荷载略大于现浇柱,极限荷载高于现浇柱;预制柱的开裂、屈服位移与现浇柱相近,极限荷载时位移、极限位移、延性系数大于现浇柱.由于预制柱根部套筒范围内箍筋加密,预制柱的耗能能力略优于现浇柱.Ⅰ、Ⅲ型套筒上下方钢筋应变基本一致,表明Ⅰ、Ⅲ型套筒在预制柱中能够很好的传递钢筋应力.
In order to study the aseismic performance of the precast column connected with the new type of slurry anchor connection,a cast-in-place columns and two prefabricated column specimens,in which longitudinal reinforcement were connected by type I and III grouted sleeve lapping connector respectively,were designed for quasi-static test on the basis of the type I and III sleeve joint connection.The test phenomena show that the initial horizontal cracks of the castin-place column appear at the root.Because the vertical strain of the concrete is restrained by the sleeve,the initial horizontal cracks of the precast column appear on the top of the sleeve.In the limit state,the crushed part of the cast-inplace columns is long and the crushed part of the precast columns is short.The test results show that the cracking load and yield load of the precast column are slightly larger than the cast-in-place column,and the ultimate load of the precast column is higher.The cracking load,yield load of the two different types are almost the same,but the displacement under the ultimate load,ultimate displacement and ductility coefficient of the precast column are larger.Due to the stirrup encryption in the range of the sleeve of the precast column,the energy dissipation of the precast column is slightly better than the cast-in-place column.The strain of steel bar on the upper and lower parts of type I and type III sleeve is basically the same,so both of them can perform well in transferring the stress.
In order to study the aseismic performance of the precast column connected with the new type of slurry anchor connection,a cast-in-place columns and two prefabricated column specimens,in which longitudinal reinforcement were connected by type I and III grouted sleeve lapping connector respectively,were designed for quasi-static test on the basis of the type I and III sleeve joint connection.The test phenomena show that the initial horizontal cracks of the castin-place column appear at the root.Because the vertical strain of the concrete is restrained by the sleeve,the initial horizontal cracks of the precast column appear on the top of the sleeve.In the limit state,the crushed part of the cast-inplace columns is long and the crushed part of the precast columns is short.The test results show that the cracking load and yield load of the precast column are slightly larger than the cast-in-place column,and the ultimate load of the precast column is higher.The cracking load,yield load of the two different types are almost the same,but the displacement under the ultimate load,ultimate displacement and ductility coefficient of the precast column are larger.Due to the stirrup encryption in the range of the sleeve of the precast column,the energy dissipation of the precast column is slightly better than the cast-in-place column.The strain of steel bar on the upper and lower parts of type I and type III sleeve is basically the same,so both of them can perform well in transferring the stress.
引文
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[3]LING J H,RAHMAN A B A,IBRAHIM I S.Feasibility study of grouted splice connector under tensile load[J].Construction and Building Materials,2014,50(1):530.
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[7]卫冕,方旭.钢筋套筒浆锚连接的预制柱试验性能研究[J].佳木斯大学学报(自然科学版),2013,31(3):352.WEI Mian,FANG Xu.Tests on behavior of precast columns with reinforcements spliced by grout sleeves[J].Journal of Jiamusi University(Natural Science Edition),2013,31(3):352.
[8]AMELI M J,PARKS J E,BROWN D N,et al.Seismic evaluation of grouted splice sleeve connections for reinforced precast concrete column-to-cap beam joints in accelerated bridge construction[J].PCI Journal,2015,60(2):80.
[9]ONG H Y.Experimental study of grout filled splice sleeve integrated with shear key for precast concrete connection[D].Johor:Technological University of Malaysia,2010.
[10]余琼,许志远,袁炜航,等.两种因素影响下套筒约束浆锚搭接接头拉伸试验[J].哈尔滨工业大学学报,2016,48(12):34.YU Qiong,XU Zhiyuan,YUAN Weihang,et al.Experimental study of grouted sleeve lapping connectors varied in two factors under tensile load[J].Journal of Harbin Institute of Technology,2016,48(12):34.
[11]余琼.一种新型的约束搭接套筒黏结[P].中国:ZL 2014 20656653.0,2015-04-01.YU Qiong.Grouted sleeve lapping connector[P].China:ZL2014 2 0656653.0,2015-04-01.
[12]中华人民共和国住房和城乡建设部.高层建筑混凝土结构技术规程:JGJ3-2010[S].北京:中华人民共和国住房和城乡建设部,2010.Ministry of Housing and Urban-Rural Development of the People’s Republic of China.Technical specification for concrete structures of tall building:JGJ3-2010[S].Beijing:Ministry of Housing and Urban-Rural Development of the People’s Republic of China,2010.
[13]中华人民共和国住房和城乡建设部,国家质量监督检验检疫总局.混凝土结构设计规范:GB50010-2010[S].北京:中国建筑工业出版社,2010.Ministry of Housing and Urban-Rural Development of the People’s Republic of China,General Administration of Quality Supervision.Code for design of concrete structures:GB50010-2010[S].Beijing:China Architecture&Building Press,2010.
[14]中华人民共和国住房和城乡建设部.建筑抗震试验方法规程:JGJ/T 101-2015[S].北京:中国建筑建筑科学研究院,2015.Ministry of Housing and Urban-Rural Development of the People’s Republic of China,Specification of test methods for earthquake resistant building:JGJ/T101-2015[S].Beijing:China Academy of Building Research,2015.
[15]顾祥林.混凝土结构基本原理[M].上海:同济大学出版社,2004.GU Xianglin.Basic principle of concrete structure[M].Shanghai:Tongji University Press 2004.
[16]中华人民共和国住房和城乡建设部,国家质量监督检验检疫总局.建筑抗震设计规范:GB50011-2010[S].北京:中国建筑工业出版社,2010.Ministry of Housing and Urban-Rural Development of the People’s Republic of China,General Administration of Quality Supervision.Code for seismic design of buildings:GB50011-2010[S].Beijing:China Architecture&Building Press,2010.
[2]ALIAS A,ZUBIR M A,SHAHID K A,et al.Structural performance of grouted sleeve connectors with and without transverse reinforcement for precast concrete structure[J].Procedia Engineering,2013,53(7):116.
[3]LING J H,RAHMAN A B A,IBRAHIM I S.Feasibility study of grouted splice connector under tensile load[J].Construction and Building Materials,2014,50(1):530.
[4]中华人民共和国住房和城乡建设部.钢筋套筒灌浆连接应用技术规程:JGJ355-2015[S].北京:中国建筑工业出版社,2015.Ministry of Housing and Urban-Rural Construction of the People's Republic of China.Technical specification for grout sleeve splicing of rebars:JGJ355-2015[S].Beijing:China Architecture&Building Press,2015.
[5]赵勇,李锐,王晓锋,等.大直径高强钢筋套筒灌浆连接预制柱抗震性能试验研究[J].土木工程学报,2017,50(5):27.ZHAO Yong,LI Rui,WANG Xiaofeng,et al.Experimental research on seismic behaviors of precast concrete columns with large-diameter and high-yield strength reinforcements splicing by groutfilled coupling sleeves[J].China Civil Engieering Journal,2017,50(5):27.
[6]刘洪涛,闫秋实,杜修丽.钢筋混凝土框架梁柱节点灌浆套筒连接抗震性能研究[J].建筑结构学报,2017,38(9):54.LIU Hongtao,YAN Qiushi,DU Xiuli.Study of seismic performance of reinforced concrete frame beam-column joints connected with grouted sleeves[J].Journal of Building Structures,2017,38(9):54.
[7]卫冕,方旭.钢筋套筒浆锚连接的预制柱试验性能研究[J].佳木斯大学学报(自然科学版),2013,31(3):352.WEI Mian,FANG Xu.Tests on behavior of precast columns with reinforcements spliced by grout sleeves[J].Journal of Jiamusi University(Natural Science Edition),2013,31(3):352.
[8]AMELI M J,PARKS J E,BROWN D N,et al.Seismic evaluation of grouted splice sleeve connections for reinforced precast concrete column-to-cap beam joints in accelerated bridge construction[J].PCI Journal,2015,60(2):80.
[9]ONG H Y.Experimental study of grout filled splice sleeve integrated with shear key for precast concrete connection[D].Johor:Technological University of Malaysia,2010.
[10]余琼,许志远,袁炜航,等.两种因素影响下套筒约束浆锚搭接接头拉伸试验[J].哈尔滨工业大学学报,2016,48(12):34.YU Qiong,XU Zhiyuan,YUAN Weihang,et al.Experimental study of grouted sleeve lapping connectors varied in two factors under tensile load[J].Journal of Harbin Institute of Technology,2016,48(12):34.
[11]余琼.一种新型的约束搭接套筒黏结[P].中国:ZL 2014 20656653.0,2015-04-01.YU Qiong.Grouted sleeve lapping connector[P].China:ZL2014 2 0656653.0,2015-04-01.
[12]中华人民共和国住房和城乡建设部.高层建筑混凝土结构技术规程:JGJ3-2010[S].北京:中华人民共和国住房和城乡建设部,2010.Ministry of Housing and Urban-Rural Development of the People’s Republic of China.Technical specification for concrete structures of tall building:JGJ3-2010[S].Beijing:Ministry of Housing and Urban-Rural Development of the People’s Republic of China,2010.
[13]中华人民共和国住房和城乡建设部,国家质量监督检验检疫总局.混凝土结构设计规范:GB50010-2010[S].北京:中国建筑工业出版社,2010.Ministry of Housing and Urban-Rural Development of the People’s Republic of China,General Administration of Quality Supervision.Code for design of concrete structures:GB50010-2010[S].Beijing:China Architecture&Building Press,2010.
[14]中华人民共和国住房和城乡建设部.建筑抗震试验方法规程:JGJ/T 101-2015[S].北京:中国建筑建筑科学研究院,2015.Ministry of Housing and Urban-Rural Development of the People’s Republic of China,Specification of test methods for earthquake resistant building:JGJ/T101-2015[S].Beijing:China Academy of Building Research,2015.
[15]顾祥林.混凝土结构基本原理[M].上海:同济大学出版社,2004.GU Xianglin.Basic principle of concrete structure[M].Shanghai:Tongji University Press 2004.
[16]中华人民共和国住房和城乡建设部,国家质量监督检验检疫总局.建筑抗震设计规范:GB50011-2010[S].北京:中国建筑工业出版社,2010.Ministry of Housing and Urban-Rural Development of the People’s Republic of China,General Administration of Quality Supervision.Code for seismic design of buildings:GB50011-2010[S].Beijing:China Architecture&Building Press,2010.