倒置外露灌浆套筒装配式柱脚节点抗震性能研究

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发布时间：2020-01-06 00:00:00

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倒置外露灌浆套筒装配式柱脚节点抗震性能研究

Seismic Behavior of Prefabricated Column Foot Joint with Inverted Exposed Grouting Sleeve

2020年第8期

灌浆套筒；装配式混凝土结构；柱脚节点；自振特性；抗震性能

Grouting sleeve; Prefabricated concrete structure; Foot joint; Natural vibration property; Seismic behavior

2020年第8期

10.19761/j.1000-4637.2020.08.059.06

国家重点研发计划政府间国际科技创新合作重点专项项目（2017YFE0195300）；山东省自然科学基金项目（ZR2017BEE022）。

乔德浩1，倪韦斌1，王少杰1，庞加宝2，胡兆文2，黄兴淮3

1.山东农业大学水利土木工程学院，山东泰安 271018；2.山东德建集团工程技术研究院，山东德州 253000；3.东南大学土木工程学院，江苏南京 210096

乔德浩1，倪韦斌1，王少杰1，庞加宝2，胡兆文2，黄兴淮3

乔德浩,倪韦斌,王少杰,等.倒置外露灌浆套筒装配式柱脚节点抗震性能研究[J].混凝土与水泥制品,2020(8):59-64.

QIAO D H,NI W B,WANG S J,et al.Seismic Behavior of Prefabricated Column Foot Joint with Inverted Exposed Grouting Sleeve[J].CHINA CONCRETE AND CEMENT PRODUCTS,,2020(8):59-64.

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1000

摘要：通过自振特性测试和竖向荷载作用下的低周往复荷载试验，对比分析了倒置外露灌浆套筒装配式柱脚节点与传统现浇及现行装配式柱脚节点的整体性及抗震性能。结果表明，倒置外露灌浆套筒柱脚节点试件（NPC）的整体性与传统现浇试件（RC）基本相当，现行装配试件（TPC）测试所得的各阶自振频率基本均低于RC和NPC。三种柱脚节点在失效破坏时均出现了塑性铰，且两个装配式柱脚节点较现浇试件其塑性铰、柱身开裂高度均上移约1个灌浆套筒高度，宜适当延长箍筋加密区。三种柱脚节点的刚度退化规律相同，延性系数均在3.0以上，NPC的耗能能力显著优于RC和TPC。RC、TPC、NPC对应的开裂位移角分别为1/430、1/393、1/479，对应的极限位移角分别为1/24、1/22、1/22，均分别大于规范限值，满足抗震设防要求。 Abstract: Through test of natural vibration property and horizontal low cycle reciprocating load test under vertical load, the integrity and seismic behavior of the inverted exposed grouting sleeve prefabricated column foot joint and the traditional cast-in-place and current prefabricated column base joint were compared and analyzed. The results show that the integrity of the specimen of inverted exposed grouting sleeve column base joint (NPC) is the same as that of the traditional cast-in-place specimen (RC). The natural frequencies of current assembled specimen (TPC) are lower than those of RC and NPC. Plastic hinge appears in all three kinds of column foot joints when they failed, and the height of plastic hinge and column body crack of two prefabricated column foot joints moves up about one grouting sleeve height compared with RC, the densified area of stirrup should be extended properly. The stiffness degradation law of the specimens is the same, the ductility factors are all above 3.0, and the energy dissipation capacity of NPC is significantly better than that of RC and TPC. The corresponding crack displacement angles of RC, TPC and NPC are 1/430, 1/393 and 1/479 respectively, and the corresponding limiting displacement drift are 1/24, 1/22 and 1/22 respectively, which are greater than the code limits, meeting the seismic fortification requirements.

英文名 : Seismic Behavior of Prefabricated Column Foot Joint with Inverted Exposed Grouting Sleeve

刊期 : 2020年第8期

关键词 : 灌浆套筒；装配式混凝土结构；柱脚节点；自振特性；抗震性能

Key words : Grouting sleeve; Prefabricated concrete structure; Foot joint; Natural vibration property; Seismic behavior

刊期 : 2020年第8期

DOI : 10.19761/j.1000-4637.2020.08.059.06

文章编号 :

基金项目 : 国家重点研发计划政府间国际科技创新合作重点专项项目（2017YFE0195300）；山东省自然科学基金项目（ZR2017BEE022）。

作者 : 乔德浩1，倪韦斌1，王少杰1，庞加宝2，胡兆文2，黄兴淮3

单位 : 1.山东农业大学水利土木工程学院，山东泰安 271018；2.山东德建集团工程技术研究院，山东德州 253000；3.东南大学土木工程学院，江苏南京 210096

乔德浩1，倪韦斌1，王少杰1，庞加宝2，胡兆文2，黄兴淮3

乔德浩,倪韦斌,王少杰,等.倒置外露灌浆套筒装配式柱脚节点抗震性能研究[J].混凝土与水泥制品,2020(8):59-64.

QIAO D H,NI W B,WANG S J,et al.Seismic Behavior of Prefabricated Column Foot Joint with Inverted Exposed Grouting Sleeve[J].CHINA CONCRETE AND CEMENT PRODUCTS,,2020(8):59-64.

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摘要

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结论

参考文献

引用本文

Abstract: Through test of natural vibration property and horizontal low cycle reciprocating load test under vertical load, the integrity and seismic behavior of the inverted exposed grouting sleeve prefabricated column foot joint and the traditional cast-in-place and current prefabricated column base joint were compared and analyzed. The results show that the integrity of the specimen of inverted exposed grouting sleeve column base joint (NPC) is the same as that of the traditional cast-in-place specimen (RC). The natural frequencies of current assembled specimen (TPC) are lower than those of RC and NPC. Plastic hinge appears in all three kinds of column foot joints when they failed, and the height of plastic hinge and column body crack of two prefabricated column foot joints moves up about one grouting sleeve height compared with RC, the densified area of stirrup should be extended properly. The stiffness degradation law of the specimens is the same, the ductility factors are all above 3.0, and the energy dissipation capacity of NPC is significantly better than that of RC and TPC. The corresponding crack displacement angles of RC, TPC and NPC are 1/430, 1/393 and 1/479 respectively, and the corresponding limiting displacement drift are 1/24, 1/22 and 1/22 respectively, which are greater than the code limits, meeting the seismic fortification requirements.

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