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已有的研究结果表明,配有对角斜筋、综合斜筋的小跨高比剪力墙连梁具有较好的抗震性能。然而使用更高强度钢筋后采用上述配筋方案能否达到预期的效果,缺乏相关的试验研究。为此完成了4根配置500 MPa钢筋的小跨高比连梁在低周反复荷载作用下的试验,研究配置500 MPa钢筋连梁主要受力性能,以及配置500 MPa级钢筋连梁与原有配置HRB335级钢筋连梁在抗震性能方面的差异。8个小跨高比连梁试件试验结果的对比说明,配置500 MPa级钢筋的综合斜筋、对角斜筋小跨高比连梁的钢筋采用等强代换的原则,并与HRB335级钢筋连梁在配箍特征值、剪压比基本相同,构造措施一样的情况下,最终破坏时能达到的最大承载能力差别不大,并表现出良好的抗震性能。
The existing research results show that the small span ratio shear walls with diagonally inclined tendons and synthetic oblique tendons have better seismic performance. However, the use of higher strength steel reinforcement program after using the above can achieve the desired effect, the lack of relevant experimental study. For this purpose, the test of 4 small span beams with 500 MPa steel bar under low cyclic load was completed. The main stress performance of the 500 MPa reinforced concrete beams was studied, Discrepancy in Seismic Performance of HRB335 Reinforced Concrete Beams. The comparison of the test results of 8 small span high beam concrete beams shows that the principle of equal substitution is adopted for the reinforcing bars of 500 MPa grade reinforced concrete and that of the small span high ratio concrete beams of diagonal reinforcement and that of HRB335 Reinforced concrete beams with the hoop characteristic value, shear and compression ratio is basically the same, the same structural measures, the ultimate failure to achieve the maximum carrying capacity is not very different, and showed good seismic performance.