[1]汪梦甫,胡张齐,罗丹.带钢板暗支撑高阻尼混凝土核心筒斜向加载拟静力试验研究[J].地震工程与工程振动,2019,39(02):018-26.[doi:10.13197/j.eeev.2019.02.18.wangmf.003]
 WANG Mengfu,HU Zhangqi,LUO Dan.Quasi-static cyclic test on high damping concrete core wall with steel plate concealed bracings under diagonal loading[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2019,39(02):018-26.[doi:10.13197/j.eeev.2019.02.18.wangmf.003]
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带钢板暗支撑高阻尼混凝土核心筒斜向加载拟静力试验研究
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《地震工程与工程振动》[ISSN:/CN:]

卷:
39
期数:
2019年02
页码:
018-26
栏目:
论文
出版日期:
2019-04-30

文章信息/Info

Title:
Quasi-static cyclic test on high damping concrete core wall with steel plate concealed bracings under diagonal loading
作者:
汪梦甫 胡张齐 罗丹
湖南大学 土木工程学院, 湖南 长沙 410082
Author(s):
WANG Mengfu HU Zhangqi LUO Dan
College of Civil Engineering, Hunan University, Changsha 410082, China
关键词:
核心筒双向耦合效应钢板暗支撑斜向加载高阻尼混凝土
Keywords:
core wallbilateral coupling effectsteel plate bracingsdiagonal loadinghigh damping concrete
分类号:
TU317;TU375
DOI:
10.13197/j.eeev.2019.02.18.wangmf.003
摘要:
为研究双向耦合作用对带钢板暗支撑高阻尼混凝土核心筒抗震性能的影响,对两个试件进行了低周往复荷载试验,其中HCW-P加载角度为0°,HCW-D为45°。研究了不同加载角度时,试件的破坏形态、承载力、延性、耗能等。结果表明,斜向45°加载试件的破坏形态与0°加载试件有较大的不同,HCW-D斜裂缝主要集中于中部墙肢,端部墙肢则主要为水平裂缝,而HCW-P则是水平及斜裂缝共存于腹板;在抗震性能方面,HCW-D的屈服位移、极限位移均有提高,延性系数下降,峰值承载力及耗能增加。对HCW-D的混凝土及钢筋应变进行了分析,应变分布表明,在受到正向水平荷载作用时,一个端部墙肢以受拉为主,呈小偏心受拉,另一个则是以受压为主,呈小偏心受压,且中部墙肢洞口约束边缘构件受压较大,连梁参与作用较小。
Abstract:
To investigate the influence of bilateral coupled effect on seismic performance of high damping concrete core walls with steel plate bracings, the low cyclic loading tests of two core wall specimens were conducted, the loading direction angle of specimen HCW-P is 0°, and which of specimen HCW-D is 45°. The failure modes, load capacities, ductility factors and energy dissipation coefficients of two specimens are studied. The test results show that the failure modes of the two specimens are quite different, the diagonal cracks are concentrated on its middle wall limbs and horizontal cracks are appeared on its end wall limbs for specimen HCW-D(considered as multiple shear wall, Fig.5), but the diagonal and horizontal cracks are coexisted on the web of HCW-P; load capacity, yield and ultimate displacement of HCW-D are higher than that of HCW-P, energy dissipation ability of HCW-D are stronger than that of HCW-P, but the ductility factor of HCW-D is smaller. The concrete and reinforcement strain of HCW-D is analyzed, the analysis result show that, when the lateral load is applied to HCW-D, one of the end wall limb is mainly under tension and the other one is mainly under compression, the boundary elements of middle wall limb near to the openings are under big pressure, coupling beams do not play an important part in the specimen HCW-D.

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备注/Memo

备注/Memo:
收稿日期:2018-9-10;改回日期:2018-11-12。
基金项目:国家自然科学基金项目(51278181)
作者简介:汪梦甫(1965-),男,教授,主要从事结构抗震研究.E-mail:wangmengfu@126.com
更新日期/Last Update: 1900-01-01