[1]汪梦甫,胡张齐,罗丹.不同高宽比带钢板暗支撑高阻尼混凝土核心筒抗震性能研究[J].地震工程与工程振动,2018,38(03):037-47.[doi:10.13197/j.eeev.2018.03.37.wangmf.005]
 WANG Mengfu,HU Zhangqi,LUO Dan.Study on seismic performance of high damping concrete core walls with steel plate concealed bracings of different aspect ratio[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2018,38(03):037-47.[doi:10.13197/j.eeev.2018.03.37.wangmf.005]
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不同高宽比带钢板暗支撑高阻尼混凝土核心筒抗震性能研究
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《地震工程与工程振动》[ISSN:/CN:]

卷:
38
期数:
2018年03期
页码:
037-47
栏目:
论文
出版日期:
2018-08-18

文章信息/Info

Title:
Study on seismic performance of high damping concrete core walls with steel plate concealed bracings of different aspect ratio
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:
核心筒高宽比抗震性能剪力滞后有限元分析
Keywords:
core wallaspect ratioseismic performanceshear lag effectfinite element analysis
分类号:
P315.9
DOI:
10.13197/j.eeev.2018.03.37.wangmf.005
摘要:
提出了一种新型带钢板暗支撑高阻尼混凝土核心筒,为了研究这种新型核心筒的抗震性能,对2个高宽比分别为1.33(HCW1)和1.77(HCW2)的核心筒试件进行了低周反复荷载试验,得到了核心筒的破坏模式、滞回曲线、骨架曲线、刚度退化曲线等。试验结果表明,HCW1墙肢以斜裂缝为主,而HCW2水平裂缝居多。HCW2承载力及刚度较小,但是极限位移较HCW1有较大的提高且耗能能力增强。分析了翼缘墙肢的剪力滞后现象并与普通混凝土核心筒进行了对比,结果表明本文新型混凝土核心筒剪力滞后相对较小,整体空间作用更好,HCW2的剪力滞后较HCW1更小。利用有限元软件OpenSees模拟了2个试件的滞回曲线,并绘制骨架曲线,与试验结果吻合较好,在此基础上进行参数分析,研究不同高宽比核心筒屈服位移、延性系数等的变化趋势。
Abstract:
To study the seismic performance of high damping concrete core walls with steel plate bracings,two specimens with the aspect ratios of 1.33(HCW1) and 1.77(HCW2) are tested under low-revered cyclic loading. The failure pattern is observed, and the hysteric curves, skeleton curves, stiffness degradation curves are obtained. The test results show that, HCW1 has more inclined cracks on the wall limb, HCW2 has more horizontal cracks. The bearing capacity and stiffness of the HCW2 is lower than the HCW1, but the ultimate displacement and energy-dissipation ability of the HCW2 is larger than the HCW1. The shear lag factor is studied, and compared with normal concrete core walls. The comparison results show that, the shear lag of traditional concrete core walls is larger than the core walls in this paper, and the shear lag of HCW2 is lower than the HCW1. The two specimens are modeled with the finite element software OpenSees, the calculated hysteric curves and skeleton curves are in good agreement with the test results, the parametric analysis are conducted to study the variation trend to yield displacement, ductility factor etc.

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备注/Memo

备注/Memo:
收稿日期:2017-08-15;改回日期:2017-11-25。
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: 2018-08-18