[1]曹万林,郭华镇,吕西林,等.不同配钢型式圆截面型钢混凝土巨型柱抗震性能[J].自然灾害学报,2019,28(06):001-9.[doi:10.13577/j.jnd.2019.0601]
 CAO Wanlin,GUO Huazhen,LV Xilin,et al.Seismic behavior of circular SRC mega column with different profiled steel[J].,2019,28(06):001-9.[doi:10.13577/j.jnd.2019.0601]
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不同配钢型式圆截面型钢混凝土巨型柱抗震性能
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
28
期数:
2019年06期
页码:
001-9
栏目:
出版日期:
2019-12-28

文章信息/Info

Title:
Seismic behavior of circular SRC mega column with different profiled steel
作者:
曹万林1 郭华镇1 吕西林2 周建龙3 武海鹏14
1. 北京工业大学 建筑工程学院, 北京 100124;
2. 同济大学 土木工程学院, 上海 200092;
3. 华东建筑设计研究院有限公司, 上海 200011;
4. 中国矿业大学(北京) 力学与建筑工程学院, 北京 100083
Author(s):
CAO Wanlin1 GUO Huazhen1 LV Xilin2 ZHOU Jianlong3 WU Haipeng14
1. College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China;
2. College of Civil Engineering, Tongji University, Shanghai 200092, China;
3. East China Architectural Design & Research Institute Co., Ltd., Shanghai 200011, China;
4. School of Mechnics and Civil Engineering, China University of Mining & Technology(Beijing), Beijing 100083, China
关键词:
型钢混凝土配钢型式圆形巨型柱抗震性能试验研究
Keywords:
SRCprofiled steel typecircular mega columnseismic behaviorexperimental research
分类号:
TU398;X9;P315.9
DOI:
10.13577/j.jnd.2019.0601
摘要:
为研究某超高层建筑巨型框架结构型钢混凝土巨型柱的抗震性能,利用40000kN大型加载装置,进行了1个内置H型钢和1个内置十字形型钢巨型柱模型试件的低周反复荷载试验,两试件截面尺寸、配钢率、配筋率、混凝土强度等级均相同,主要不同在于配钢型式。对比分析了两试件的破坏特征、滞回曲线、承载力、变形、刚度退化过程和耗能,得到了配钢型式对其抗震性能的影响,并采用纤维模型法进行了正截面承载力计算。结果表明:两试件均呈现出以弯曲为主的破坏特征,滞回曲线较为饱满,承载力下降缓慢,极限位移角超过5%,表现出良好的变形能力和耗能能力;十字形型钢混凝土巨型柱两个工程轴方向性能相同,H型钢混凝土巨型柱强轴方向性能好于十字形型钢混凝土巨型柱;计算所得承载力与实测承载力符合较好。
Abstract:
In order to investigate the seismic behavior of a steel reinforced concrete (SRC) mega column from the mega frame structure in a high rise building, the 40000 kN loading device is utilized to conduct low cyclic loading test on 2 circular mega column specimens, where a H-shaped profiled steel or crisscross shaped profiled steel is encased. The cross-sectional geometric dimension, steel ratio, reinforcement ratio and concrete strength of the 2 specimens are the same. The main difference lies in the profiled steel type. The failure feature, hysteretic curve, bearing capacity, deformability, stiffness degradation and energy dissipating ability are analyzed and compared. The influence of profiled steel type on seismic behavior is obtained. Also the bearing capacity is calculated by fiber method. Research shows that:for both specimens, a major bending failure is observed; the hysteretic curves are full, and the bearing capacity declines smoothly; the ultimate drift ratio exceeds 5%; deformability and enery dissipating ability exhibit very well. The seismic behavior along the two engineering axis of the mega column encased crisscross shaped profiled steel is the same, but the seismic behavior along strong axis of the mega column encased H shaped profiled steel is better relativly. The calculated bearing capacity matches the test results well.

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备注/Memo

备注/Memo:
收稿日期:2019-09-11;改回日期:2019-10-20。
基金项目:国家自然科学基金青年基金项目(51808014)
作者简介:曹万林(1954-),男,教授,博士,主要从事结构抗震研究.E-mail:wlcao@bjut.edu.cn
通讯作者:武海鹏(1989-),男,讲师,博士,主要从事组合结构抗震研究.E-mail:wu.hp@cumtb.edu.cn
更新日期/Last Update: 1900-01-01