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工程科学与技术:2014,46(5):66-72
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T形配钢型钢混凝土柱延性性能及轴压比限值
(长江大学 城市建设学院)
DuctilityPerformanceandUltimateAxialCompressionRatioofSteelReinforced ConcreteColumnswithT-shapedSteelCross-section
(SchoolofUrbanConstruction,YangtzeUniv.)
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投稿时间:2014-03-05    修订日期:2014-06-30
中文摘要: 轴压比是影响结构延性和抗倒塌性能的关键因素。通过12根T形配钢型钢混凝土柱的低周反复加载试验,对破坏形态、滞回特性、延性性能等进行研究;基于界限破坏理论,对T形配钢型钢混凝土柱轴压比限值进行分析。结果表明,在低周反复荷载作用下,T形配钢型钢混凝土柱主要发生弯曲破坏和剪切斜压破坏,具有较好的延性性能;基于试验轴压比和设计轴压比之间的转换关系,提出了T形配钢型钢混凝土柱在不同抗震等级下的轴压比限值,该限值可为T形配钢型钢混凝土柱的抗震设计提供参考依据。
Abstract:Axial compression ratio is a critical factor which affects the structure’s ductility and resistance to progressive collapse.Through 12 specimens of T-shaped steel reinforced concrete columns under cyclic load loading test, the failure mode,hysteretic characteristics and ductility performance were investigated.The axial compression limit of T-shaped steel reinforced concrete columns was derived by the balanced failure method.The result indicated that T-shape steel reinforced concrete column possesses a good ductility performance,the specimens with λ=2.5 failed in bending, whereas the specimens of shear-span ratio λ=2.0 failed in shear compression under cyclic load.Based on the relation between the experimental and the design axial compression ratio,the axial compression ratio limit of steel reinforced concrete columns with T-shape in different seismic level was proposed,which could provide a reference for seismic design.
文章编号:201400226     中图分类号:    文献标志码:
基金项目:国家自然科学基金资助项目(51108041);湖北省自然科学基金资助项目(2011CDB009);湖北省教育厅科学技术研究资助项目(Q20111306);湖北省高等学校优秀中青年科技创新团队计划资助项目(T201303)
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曾磊,吴园园,石峰,胡志文.T形配钢型钢混凝土柱延性性能及轴压比限值[J].工程科学与技术,2014,46(5):66-72.
Zeng Lei,Wu Yuanyuan,Shi Feng,Hu Zhiwen.DuctilityPerformanceandUltimateAxialCompressionRatioofSteelReinforced ConcreteColumnswithT-shapedSteelCross-section[J].Advanced Engineering Sciences,2014,46(5):66-72.