[1]汤磊,管东芝,郭正兴.基于小型超高性能混凝土壳的装配式柱脚连接抗震性能试验研究[J].世界地震工程,2023,39(01):118-135.[doi:10.19994/j.cnki.WEE.2023.0013]
 TANG Lei,GUAN Dongzhi,GUO Zhengxing.Experimental study on seismic performance of precast column-footing connections based on minor prefabricated ultra-high performance concrete shells[J].,2023,39(01):118-135.[doi:10.19994/j.cnki.WEE.2023.0013]
点击复制

基于小型超高性能混凝土壳的装配式柱脚连接抗震性能试验研究
分享到:

《世界地震工程》[ISSN:/CN:]

卷:
39
期数:
2023年01期
页码:
118-135
栏目:
常规论文
出版日期:
2023-02-15

文章信息/Info

Title:
Experimental study on seismic performance of precast column-footing connections based on minor prefabricated ultra-high performance concrete shells
文章编号:
1007-6069(2023)01-0118-09
作者:
汤磊管东芝郭正兴
东南大学土木工程学院,江苏南京211189
Author(s):
TANG Lei GUAN Dongzhi GUO Zhengxing
School of Civil Engineering, Southeast University, Nanjing 211189, China
关键词:
预制混凝土构件 柱脚连接 UHPC 试验
Keywords:
precast concrete element column-footing connection UHPC test
分类号:
TU375.4
DOI:
10.19994/j.cnki.WEE.2023.0013
文献标志码:
A
摘要:
常规装配式混凝土柱脚连接常采用灌浆套筒作为连接方式,为克服地震作用损伤集中于连接区而不利于抗震和修复的问题,提出了一种基于小型超高性能混凝土(UHPC)壳的装配式柱脚连接。采用UHPC预制成环形壳状,设置于预制混凝土柱脚区域,控制该柱脚连接在地震作用下损伤出现的部位。进行了3个足尺试件的试验,对比分析了滞回和骨架曲线、强度和刚度退化以及耗能能力,研究了预制UHPC壳尺寸对抗震性能的影响,提出了骨架曲线简化计算模型。结果表明:该连接形式在地震作用下的混凝土破坏区域转移至UHPC壳上边缘; 抗震性能总体良好; 较厚较短的UHPC壳更加有利于提高基于小型UHPC壳的装配式混凝土柱脚连接的抗震性能; 提出的简化计算模型在一定程度上反映了该连接的内在机理,可用于该连接形式的分析和设计。
Abstract:
The Grouting sleeves are commonly utilized as the connection method in the erection of precast columns. To overcome the problem that the damage always occur at the connection point between precast elements under earthquake attacks,, a new precast column-footing connection method, which was based on the minor prefabricated UHPC shells, was proposed this paper. To evaluate the performance of the newly proposed connection method, three full-scaled specimens were tested. The size effects of the prefabricated UHPC shells on the seismic performance were investigated. In addition, the hysteretic and skeleton curves, strength and stiffness degradation and energy-dissipated capacity were analyzed based on the experimental results. Besides, a new simplified model for the analysis of the skeleton curves was proposed. The results show that the main damage to the concrete is concentrated on the upper side of the UHPC shells under the reversal cyclic loadings. And the newly proposed connection method with a thicker and shorter prefabricated UHPC shell has a better seismic performance. The proposed simplified model can be used in the analysis and design of the proposed connections.

参考文献/References:

[1] 吴刚, 冯德成, 徐照, 等. 装配式混凝土结构体系研究进展[J]. 土木工程与管理学报, 2021, 38(4): 41 — 51, 77.
WU Gang, FENG Decheng, XU Zhao, et al. Research developments in precast concrete structural systems[J]. Journal of Civil Engineering and Management, 2021, 38(4): 41 — 51, 77.(in Chinese)
[2] 吴刚, 冯德成. 装配式混凝土框架节点基本性能研究进展[J]. 建筑结构学报, 2018, 39(2): 1 — 16.
WU Gang, FENG Decheng. Research progress on fundamental performance of precast concrete frame beam-to-column connections[J]. Journal of Building Structures, 2018, 39(2): 1 — 16.(in Chinese)
[3] WANG Z Q, QU H Y, LI T T, et al. Quasi-static cyclic tests of precast bridge columns with different connection details for high seismic zones[J]. Engineering Structures, 2018, 158: 13 — 27.
[4] 章一萍, 冯波, 熊峰, 等. 套筒灌浆连接纵筋的预制钢筋混凝土短柱抗震性能试验研究[J]. 建筑结构, 2015, 45(15): 81 — 86.
ZHANG Yiping, FENG Bo, XIONG Feng, et al. Experimental study on seismic behavior of precast reinforced concrete short columns with grouted sleeves connecting longitudinal reinforcements[J]. Building Structure, 2015, 45(15): 81 — 86.(in Chinese)
[5] 杜修力, 刘洪涛, 许成顺, 等. 不同轴压比下装配整体式地铁车站拼装柱抗震性能试验研究[J]. 建筑结构学报, 2018, 39(11): 11 — 19.
DU Xiuli, LIU Hongtao, XU Chengshun, et al. Experimental study on seismic behavior of assembled columns of integrated subway stations under different axial compression ratios[J]. Journal of Building Structures, 2018, 39(11): 11 — 19.(in Chinese)
[6] HABER Z B, MACKIE K R, AL-JELAWY H M. Testing and analysis of precast columns with grouted sleeve connections and shifted plastic hinging[J]. Journal of Bridge Engineering, 2017, 22(10): 04017078.
[7] 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 — 35, 71.
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 grout-filled coupling sleeves[J]. China Civil Engineering Journal, 2017, 50(5): 27 — 35, 71.(in Chinese)
[8] 李锐, 郑毅敏, 赵勇. 配置500MPa钢筋套筒灌浆连接预制混凝土柱抗震性能试验研究[J]. 建筑结构学报, 2016, 37(5): 255 — 263.
LI Rui, ZHENG Yimin, ZHAO Yong. Experimental research on seismic performance of precast concrete columns with 500 MPa reinforcements splicing by grout-filled coupling sleeves[J]. Journal of Building Structures, 2016, 37(5): 255 — 263.(in Chinese)
[9] GU C P, YE G, SUN W. Ultrahigh performance concrete-properties, applications and perspectives[J]. Science China Technological Sciences, 2015, 58(4):587 — 599.
[10] GUAN D Z, LIU J B, JIANG C, et al. Shear behaviour of the UHPC-NSC interface with castellated keys: effects of castellated key dimension and dowel rebar[J]. Structures, 2021, 31: 172 — 181.
[11] AZAD A K, HAKEEM I Y. Flexural behavior of hybrid hollow-core slab built with ultra high performance concrete faces[J]. Materials and Structures, 2016, 49(9): 3801 — 3813.
[12] GUAN D Z, CHEN Z X, LIU J B, et al. Seismic performance of precast concrete columns with prefabricated UHPC jackets in plastic hinge zone[J]. Engineering Structures, 2021, 245: 112776.
[13] 韩方玉, 刘建忠, 刘加平, 等. 基于超高性能混凝土的钢筋锚固性能研究[J]. 材料导报, 2019, 33(增刊1): 244 — 248.
HAN Fangyu, LIU Jianzhong, LIU Jiaping, et al. Study on anchorage behavior of steel bar in ultra-high performance concrete[J]. Materials Reports, 2019, 33(S1): 244 — 248.(in Chinese)
[14] LIU J B, CHEN Z X, GUAN D Z, et al. Experimental study on interfacial shear behaviour between ultra-high performance concrete and normal strength concrete in precast composite members[J]. Construction and Building Materials, 2020, 261: 120008.
[15] GB/T 31387 — 2015 活性粉末混凝土[S]. 北京:中国标准出版社, 2015.
GB/T 31387 — 2015 Reactive Powder Concrete[S]. Beijing: Standards Press of China, 2015.
[16] YOKOTA H, ROKUGO K, SAKATA N, et al. Recommendations for design and construction of high performance fiber reinforced cement composites with multiple fine cracks(HPFRCC)[J]. Concrete Journal, 2007, 45(3):3 — 9.
[17] 唐九如. 钢筋混凝土框架节点抗震[M]. 南京: 东南大学出版社, 1989.
TANG Jiuru. Seismic Behavior of Reinforced Concrete Frame Joints[M]. Nanjing: Southeast University Press, 1989.(in Chinese)
[18] 管东芝. 梁端底筋锚入式预制梁柱连接节点抗震性能研究[D]. 南京: 东南大学, 2017.
GUAN Dongzhi. Research on Seismic Performance of Precast Concrete Beam-to-Column Connections with Anchored Bottom Longitudinal Bars in Precast Beams[D]. Nanjing: Southeast University, 2017.(in Chinese)

备注/Memo

备注/Memo:
收稿日期:2022-03-26; 修回日期:2022-07-25
基金项目:国家自然科学基金资助项目(52278154)
作者简介:汤 磊(1977 —),男,博士,副研究员,主要从事装配式混凝土结构研究. E-mail:seutanglei@163.com
通讯作者:管东芝(1989 —),男,副教授,博士生导师,主要从事装配式混凝土结构研究. E-mail:gdzh.js@163.com
更新日期/Last Update: 1900-01-01