土木建筑工程

实腹式型钢混凝土十字形异形柱的抗震性能

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  • 1.同济大学 土木工程学院,上海 200092; 2.无锡城市职业技术学院,江苏 无锡 214000
张波(1985-),男,博士生,主要从事工程抗震与防灾、结构鉴定与加固研究.

收稿日期: 2014-05-14

  修回日期: 2014-07-28

  网络出版日期: 2014-11-17

基金资助

国家自然科学基金资助项目(61179062);江苏省第七批 “六大人才高峰” 项目(JY-060)

Seismic Behaviors of Solid- Web Steel- Reinforced- Concrete Cross- Shaped Columns

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  • 1.College of Civil Engineering,Tongji University,Shanghai 200092,China; 2.Wuxi City College of Vocational Technology,Wuxi 214000,Jiangsu,China
张波(1985-),男,博士生,主要从事工程抗震与防灾、结构鉴定与加固研究.

Received date: 2014-05-14

  Revised date: 2014-07-28

  Online published: 2014-11-17

Supported by

国家自然科学基金资助项目(61179062);江苏省第七批 “六大人才高峰” 项目(JY-060)

摘要

为研究实腹式配钢的型钢混凝土(SSRC)十字形异形柱的抗震性能,对4 根不同轴压比、配钢率和加载方向的SSRC 十字形异形柱进行了低周反复加载试验,记录了试件各阶段的开裂、变形及破坏特点,得到了其荷载-位移滞回曲线、荷载-位移骨架曲线,以及刚度退化、强度衰减、位移延性、耗能能力等力学性能.根据试验结果,对比分析了轴压比、配钢率和加载方向对 SSRC 十字形异形柱抗震性能的影响.结果表明:剪跨比较大时,试件发生弯曲破坏;SSRC 十字形异形柱具有良好的延性、塑性变形能力和耗能能力;与空腹式配钢的型钢混凝土十字形异形柱相比,SSRC 十字形异形柱抗震性能良好.

本文引用格式

张波 方林 金国芳 李凯文 王志亮 . 实腹式型钢混凝土十字形异形柱的抗震性能[J]. 华南理工大学学报(自然科学版), 2014 , 42(11) : 121 -128 . DOI: 10.3969/j.issn.1000-565X.2014.11.018

Abstract

In order to investigate the seismic behaviors of solid- web steel- reinforced- concrete (SSRC) cross- shaped columns,four column specimens with various axial compression ratios,steel ratios and loading directions were test- ed by low- cycle reversed loading experiments,and the crack,deformation,failure characteristics of these columns were recorded.Then,the load- displacement hysteretic curves and skeleton curves of the four columns were ob- tained,and their mechanical properties,namely,stiffness and strength degradation,displacement ductility and energy dissipation capacity,were analyzed.Finally,according to the experimental results,the effects of axial com- pression ratios,steel ratios and loading directions on the seismic behaviors of SSRC cross- shaped columns were dis- cussed.The results indicate that (1) the failure mode of the specimens with large shear span ratio is a bending fai- lure; and (2) SSRC cross- shaped columns have favorable ductility,plastic deformation capacity and energy dissi- pation capacity.In addition,as compared with lattice- style steel reinforced concrete (LSRC) cross- shaped co- lumns,SSRC cross- shaped columns show better seismic behavior.

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