SRC异型边节点抗震性能试验研究

发布时间：2018-03-12 11:39

本文选题：型钢混凝土　切入点：异型边节点　出处：《西安建筑科技大学学报(自然科学版)》2016年05期 　论文类型：期刊论文

【摘要】：由于生产工艺要求,大型电厂主厂房不可避免出现型钢混凝土变柱截面异型边节点,为研究其抗震性能,选取3个具有代表性的SRC变柱截面异型边节点和1个柱截面无变化的常规节点进行拟静力试验,研究了SRC异型边节点的破坏形态、滞回特性、承载力、延性、耗能和刚度退化性能.研究结果表明:型钢混凝土异型边节点破坏过程和常规节点类似,破坏形式为"小核心区"剪切破坏;SRC变柱截面异型边节点的承载力、延性、耗能及刚度较常规节点小;梁截面高度的增加能够一定程度提高SRC异型边节点的承载力、延性、耗能及刚度;SRC柱-RC梁异型边节点抗震性能较差;轴压比对异型边节点延性性能影响较大,增加轴压比对试件延性不利.
[Abstract]:Due to the requirements of the production process, it is inevitable that special-shaped side joints will appear in the main building of large power plants with steel reinforced concrete (SRC) variable column cross-section, in order to study its seismic performance, Three typical irregular side joints with SRC variable column section and one normal joint with no change in column section were selected for quasi-static test. The failure mode, hysteretic characteristics, bearing capacity and ductility of SRC irregular side joints were studied. Energy dissipation and stiffness degradation. The results show that the failure process of SRC special-shaped side joints is similar to that of conventional joints, and the failure form is "small core zone" shear failure, bearing capacity and ductility of SRC irregular side joints with variable column section. The energy dissipation and stiffness are smaller than those of conventional joints, and the increase of beam cross-section height can improve the bearing capacity, ductility, energy dissipation and stiffness of SRC special-shaped side joints to some extent. Axial compression ratio has a great effect on ductility of irregular side joints, and increasing axial compression ratio is unfavorable to the ductility of specimens.
【作者单位】：西安建筑科技大学土木工程学院;
【基金】：国家自然科学基金项目(51478381)
【分类号】：TU398.9;TU352.11

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