扣接封闭箍筋约束浆锚连接剪力墙抗震性能

汤磊; 周恩泉

doi:10.13204/j.gyjzG21090907

扣接封闭箍筋约束浆锚连接剪力墙抗震性能

doi: 10.13204/j.gyjzG21090907

汤磊,
周恩泉

东南大学土木工程学院, 南京 210096

基金项目:

国家重点研发计划课题(2016YFC0701703)。

详细信息

作者简介:
汤磊,男,1977年出生,博士,副研究员。电子信箱:seutanglei@163.com

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出版历程
- 收稿日期: 2021-09-09
- 网络出版日期: 2022-09-05

Seismic Performance of Precast Concrete Shear Walls Connected by Grouted Bellows and Confined with Overlapped Closed Stirrups

School of Civil Engineering, Southeast University, Nanjing 210096, China

摘要

摘要: 通过试验证明了采用扣接封闭箍筋约束波纹管浆锚连接剪力墙具有等同现浇性能。基于试验结果,采用MATLAB开展试件力学性能参数分析,在保证剪力墙截面尺寸不变的前提下,分析考虑了轴压比、剪跨比、边缘构件长度、竖向钢筋配筋率、边缘构件配箍特征值及混凝土强度等参数变化。分析结果表明:随轴压比增大,试件变形能力降低,承载力先升后降;随剪跨比增大,试件承载力降低而变形能力提高;随边缘构件长度增大,试件承载力提高而变形能力先升后降;随竖向钢筋配筋率增大,试件承载力线性增长,变形能力变化较小;随边缘构件配箍特征值增大,试件变形能力明显提高,承载力变化较小;随混凝土强度提高,试件承载力及变形能力均有一定程度提高。建议:轴压比宜控制在0.4以下;剪跨比不宜小于2.5;边缘构件长度可按照现行现浇混凝土相关规范要求设置;设计允许且施工可行时,宜尽量提高边缘构件配箍特征值;混凝土强度满足设计要求即可。
- 剪力墙 /
- 浆锚连接 /
- 扣接封闭箍筋 /
- 抗震性能 /
- 参数分析
Abstract: Experimental research was carried out on the precast concrete shear wall connected by grouted bellows and confined with overlapped closed stirrups and its emulative seismic performance was verified. Moreover, the parameter analysis of mechanical properties was conducted by using MATLAB to discuss the influence of key parameters on the seismic properties, such as axial compression ratio, shear span-ratio, boundary element length, vertical reinforcement ratio, stirrup characteristic values of boundary elements, and concrete strength. As axial load ratio increased, the deformation capacity decreased, and the bearing capacity was first rose and then decreased; with the increase of shear-span ratio, the bearing capacity decreased and the deformation capability was improved; as boundary element lengths increased, the bearing capacity of the component increased and the deformation capability rose and then decreased; with the increase of vertical reinforcement ratio, the bearing capacity increased linearly, and the deformation capability changed less; with the increase of stirrup characteristic values of boundary elements, the deformation capability was obviously improved, and the bearing capacity was less variable; with the increase of concrete strength, the bearing capacity and deformation capacity were improved to some extent. According to the test and MATLAB results, it was suggested that for the design of precast concrete shear walls connected by grouted bellows, the axial compression ratio should be controlled below 0.4; the shear-span ratio should not be less than 2.5; the boundary element length could be set according to the current cast-in-place concrete specification; when the design allows and the construction is feasible, it showed that the edge member coupling characteristic value should be improved; the concrete strength should meet the design requirements.
- shear wall /
- grouted connection /
- overlapped closed stirrup /
- seismic performance /
- parametric analysis

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参考文献(20)

[1]	LI X H, KURAMA Y C, WU G. Experimental and numerical study of precast posttensioned walls with yielding-based and friction-based energy dissipation[J]. Engineering Structures, 2020, 212.DOI: 10.1016/j.engstruct.2020.110391.
[2]	TWIGDEN K M, HENRY R S. Shake table testing of unbonded post-tensioned concrete walls with and without additional energy dissipation[J]. Soil Dynamics and Earthquake Engineering, 2019,119:375-389.
[3]	GU A, ZHOU Y, XIAO Y, et al. Experimental study and parameter analysis on the seismic performance of self-centering hybrid reinforced concrete shear walls[J]. Soil Dynamics & Earthquake Engineering, 2019, 116:409-420.
[4]	朱张峰, 郭正兴, 汤磊. 新型混合装配式混凝土剪力墙抗震性能试验研究及有限元分析[J]. 土木工程学报, 2018, 51(3):36-43.
[5]	ZHU Z F, GUO Z X. Reversed cyclic loading test on emulative hybrid precast concrete shear walls under different vertical loads[J]. KSCE Journal of Civil Engineering, 2018, 22(11):4364-4372.
[6]	BUDDIKA H A D S, WIJEYEWICKREMA A C. Seismic shear forces in post-tensioned hybrid precast concrete walls[J]. Journal of Structural Engineering, 2018, 144(7).DOI: 10.1061/CASCE2ST.1943-541X.0002079.
[7]	LI H N, TANG Y C, LI C, et al. Experimental and numerical investigations on seismic behavior of hybrid braced precast concrete shear walls[J]. Engineering Structures, 2019, 198.DOI: 10.1016/j.engstruct.2019.109560.
[8]	CHU M, LIU J, SUN Z. Experimental study on mechanical behaviors of new shear walls built with precast concrete hollow moulds[J]. European Journal of Environmental & Civil Engineering, 2017.DOI: 10.1080/19648189.2017.1349692.
[9]	MENEGON S J, WILSON J L, LAM N T K, et al. Experimental testing of innovative panel-to-panel connections for precast concrete building cores[J]. Engineering Structures, 2020, 207.DOI: 10.1016/j.engstruct.2020.110239.
[10]	ZHOU J, LI P, GUO N F. Seismic performance assessment of a precast concrete-encased CFST composite wall with twin steel tube connections[J]. Engineering Structures, 2020, 207.DOI: 10.1016/j.engstruct.2020.110240.
[11]	SHEN S D, PAN P, MIAO Q S, et al. Test and analysis of reinforced concrete (RC) precast shear wall assembled using steel shear key (SSK)[J]. Earthquake Engineering & Structural Dynamics, 2019, 48(14):1595-1612.
[12]	SHEN S D, PAN P, MIAO Q S, et al. Behavior of wall segments and floor slabs in precast reinforced concrete shear walls assembled using steel shear keys (SSKW)[J]. Structural Control and Health Monitoring, 2019, 26(10).DOI: 10.1002/stc.2418.
[13]	WU L, TIAN Y, SU Y, et al. Seismic performance of precast composite shear walls reinforced by concrete-filled steel tubes[J]. Engineering Structures, 2018, 162:72-83.
[14]	WU M, LIU X, LIU H, et al. Seismic performance of precast short-leg shear wall using a grouting sleeve connection[J]. Engineering Structures, 2020, 208.DOI: 10.1016/j.engstruct.2020.110338.
[15]	GU Q, DONG G, WANG X, et al. Research on pseudo-static cyclic tests of precast concrete shear walls with vertical rebar lapping in grout-filled constrained hole[J]. Engineering Structures, 2019, 189:396-410.
[16]	ZHU Z F, GUO Z X. Seismic performance of the spatial model of precast concrete shear wall structure using grouted lap splice connection and cast-in-situ concrete[J]. Structural Concrete, 2019, 20:1316-1327.
[17]	中华人民共和国住房和城乡建设部. 建筑抗震试验规程:JGJ/T 101-2015[S]. 北京:中国建筑工业出版社, 2015.
[18]	PARK R. Evaluation of ductility of structures and structural subassemblages from laboratory testing[J]. Bull. New Zealand Natl. Soc. Earthquake Eng., 1989, 22(3):155-166.
[19]	HOGNESTAD E. Study of combined bending and axial load in reinforced concrete members[R]. Urbana-Champaign:University of Illinois at Urbana Champaign,1951.
[20]	MANDER J B, PRIESTLEY M J N, PARK R. Theoretical stress-strain model for confined concrete[J]. Journal of Structural Engineering, 1988, 114(8):1804-1826.