T形配钢型钢混凝土柱延性性能及轴压比限值

发布时间：2018-01-14 22:11

本文关键词：T形配钢型钢混凝土柱延性性能及轴压比限值　出处：《四川大学学报(工程科学版)》2014年05期 　论文类型：期刊论文

【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 the key factor to influence the ductility and collapse resistance of the structure. Through the low cycle repeated loading tests of 12 T-shaped steel reinforced concrete columns, the failure pattern, hysteretic characteristics and ductility properties are studied. Based on the boundary failure theory, the limit value of axial compression ratio of T-shaped steel reinforced concrete columns is analyzed. T-shaped steel reinforced concrete columns mainly occur bending failure and shear baroclinic failure, and have good ductility. Based on the conversion relationship between experimental axial compression ratio and design axial compression ratio, the limit values of axial compression ratio of T-shaped steel reinforced concrete columns with steel profile under different seismic levels are proposed. The limit can be used as a reference for seismic design of steel reinforced concrete columns.
【作者单位】：长江大学城市建设学院;
【基金】：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)
【分类号】：TU398.9
【正文快照】： 型钢混凝土柱具有承载能力高、抗震性能好等优点,在高层及超高层结构中得到了广泛应用。研究表明轴压比是框架结构延性和抗地震倒塌性能的重要影响因素。较大轴压力使得结构塑性转动能力变差,在地震作用下容易发生延性较差的剪切破坏;而较小的轴压力使型钢混凝土结构的组合优

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