[1]夏樟华,宗周红,钟儒勉.基于双向拟静力试验的钢筋混凝土箱型薄壁墩抗震性能[J].东南大学学报(自然科学版),2013,43(1):180-187.[doi:10.3969/j.issn.1001-0505.2013.01.034]
 Xia Zhanghua,Zong Zhouhong,Zhong Rumian.Seismic performance of reinforced concrete thin-walled piers with rectangular hollow cross-sections based on bi-axial quasi-static testing[J].Journal of Southeast University (Natural Science Edition),2013,43(1):180-187.[doi:10.3969/j.issn.1001-0505.2013.01.034]
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基于双向拟静力试验的钢筋混凝土箱型薄壁墩抗震性能()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
43
期数:
2013年第1期
页码:
180-187
栏目:
交通运输工程
出版日期:
2013-01-20

文章信息/Info

Title:
Seismic performance of reinforced concrete thin-walled piers with rectangular hollow cross-sections based on bi-axial quasi-static testing
作者:
夏樟华1宗周红2钟儒勉2
1福州大学土木工程学院, 福州 350108; 2东南大学土木工程学院, 南京 210096
Author(s):
Xia Zhanghua1 Zong Zhouhong2 Zhong Rumian2
1 College of Civil Engineering, Fuzhou University, Fuzhou 350108, China
2School of Civil Engineering, Southeast University, Nanjing 210096, China
关键词:
箱型薄壁墩 双向拟静力试验 滞回性能 滞回耗能 位移延性 极限曲率
Keywords:
thin-walled piers with rectangular hollow cross-sections bi-axial quasi-static testing hysteresis performance hysteretic energy displacement ductility ultimate curvature
分类号:
U443.22;TU375.3
DOI:
10.3969/j.issn.1001-0505.2013.01.034
摘要:
对14个钢筋混凝土箱型薄壁墩进行了双向拟静力试验,考察了长细比、轴压比、配箍率等对箱型薄壁墩双向荷载-位移滞回曲线、骨架曲线、位移延性、滞回耗能和极限曲率等特性的影响,讨论了箱型薄壁墩的双向滞回性能.结果表明:在水平双向反复荷载作用下,箱型薄壁墩以弯曲破坏为主,低墩破坏区域集中于墩底,高墩的破坏区域明显上移;长细比越大,轴压比越小的箱型薄壁墩滞回曲线越饱满,变形能力越大;在长细比为6.9~13.1的范围内,位移延性系数随长细比的增大而减小,长细比为16.3的试件位移延性系数明显增大;长细比大于13.1的试件塑性破坏范围明显增大,但极限曲率显著降低.
Abstract:
Bi-axial quasi-static tests on 14 reinforced concrete thin-walled piers with rectangular hollow cross-sections were carried out. The bidirectional seismic properties, including load-displacement hysteresis curve, skeleton curve, displacement ductility, hysteretic energy and ultimate curvature, were discussed in consideration of the influence of slenderness ration, axial-load ratio and ratio of reinforcements. Results show that flexural failure is the main failure mode of the piers, the damage area of short piers focuses on the bottom area while the damage area of high piers moves upward obviously. The piers with bigger slenderness ratio and smaller axial-load ratio have more full hysteresis curves and bigger deformation capacity, which reveals excellent seismic performance. As the slenderness ratio ranges from 6.9 to 13.1, the displacement ductility of the pier decreases as slenderness ratio increases, but the displacement ductility of the pier with a slenderness ratio of 16.3 is obviously big. The piers with slenderness ratio bigger than 13.1 have big plastic damage area, but their ultimate curvature declines obviously.

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备注/Memo

备注/Memo:
作者简介: 夏樟华(1980—),男,博士生;宗周红(联系人),男,博士,教授,博士生导师,zongzh@seu.edu.cn.
基金项目: “十二五”国家科技支撑计划资助项目(2011BAK02B03)、教育部博士点基金资助项目(20110092110011).
引文格式: 夏樟华,宗周红,钟儒勉.基于双向拟静力试验的钢筋混凝土箱型薄壁墩抗震性能[J].东南大学学报:自然科学版,2013,43(1):180-187. [doi:10.3969/j.issn.1001-0505.2013.01.034]
更新日期/Last Update: 2013-01-20