In order to further study the seismic behavior and working performance improvement path of reinforced concrete columns under oblique earthquake action, seven concrete columns with HTRB630 steel bars were designed. The loading direction axial compression ratio and column end restrained pattern were chosen as the main design parameters. The low cyclic reversed load test has been carried out on understanding the seismic performance of the specimen. Based on the test study, the characteristics including the failure mode, hysteresis loops behavior, carrying capacity, ductility, stiffness degradation and energy dissipation ability were demonstrated. The results show that under the axial compression ratio of 0.6, the compressive carrying capacity and deformation capacity in 45 degree direction was about 82% and 78% of that in the principal axis direction, respectively. The load carrying capacity and deformation capacity in 45 degree direction under the axial compression ratio of 1.0 can be significantly improved by using steel plate mesh and carbon fiber cloth restrained manner. It is necessary to further study the effective measures to improve the restrained degree on damage development of inner concrete for the local area grid restrained manner. A method for calculating the normal-section flexural capacity of a column based on the equivalence principle was also developed, and its results were found to be consistent with those of the tests.

中文翻译：

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高强钢筋加筋斜载混凝土柱抗震性能试验研究

为了进一步研究斜向地震作用下钢筋混凝土柱的抗震性能和工作性能改进路径，设计了7根HTRB630钢筋混凝土柱。选择加载方向轴压比和柱端约束方式作为主要设计参数。为了了解试件的抗震性能，进行了低循环反向载荷试验。在试验研究的基础上，证明了包括破坏模式、滞后回线行为、承载能力、延展性、刚度退化和能量耗散能力在内的特性。结果表明，轴压比为0.6时，45度方向的承载力和变形能力分别为主轴方向的82%和78%，分别。采用钢板网和碳纤维布约束方式可显着提高轴压比为1.0时45度方向的承载能力和变形能力。有必要进一步研究提高局部网格约束方式对内部混凝土损伤发展的约束程度的有效措施。还提出了一种基于等效原理的柱正截面抗弯承载力计算方法，其结果与试验结果一致。有必要进一步研究提高局部网格约束方式对内部混凝土损伤发展的约束程度的有效措施。还提出了一种基于等效原理的柱正截面抗弯承载力计算方法，其结果与试验结果一致。有必要进一步研究提高局部网格约束方式对内部混凝土损伤发展的约束程度的有效措施。还提出了一种基于等效原理的柱正截面抗弯承载力计算方法，其结果与试验结果一致。