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首页> 外文会议>Biennial International Conference on Engineering, Science, Construction, and Operations in Challenging Environments >Seismic Performance of SMA/ECC Concrete Shear Wall with Self-Centering and Self-Repairing
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Seismic Performance of SMA/ECC Concrete Shear Wall with Self-Centering and Self-Repairing

机译：SMA/ECC混凝土自定心自修复剪力墙的抗震性能

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This paper presents a complementary and synergistic material system that integrates superelastic shape memory alloy (SMA) with damage-tolerant engineered cementitious composites (ECC) to address the issues of yielding of steel bar and fragility of concrete. Reverse cyclic loading tests were done on four specimens to demonstrate the feasibility of this method, which consisted of conventional steel reinforced concrete shear wall (SW-R-C), steel reinforced ECC wall (SW-R-ECC), SMA reinforced concrete wall (SW-SMA-C), and SMA reinforced ECC wall (SW-SMA-ECC). The results showed that SW-SMA-C specimen exhibited remarkable self-centering capability, which can reach more than 85% even after large deformation compared to SW-R-C. Furthermore, superior reduced damage and better ductility were observed in the SW-SMA-ECC specimen, besides reduced residual displacement. The proposed approach indicated that it is more effective for SMA combined with ECC in improving the seismic performance of shear walls.
机译：本文提出了一种将超弹性形状记忆合金（SMA）与损伤容限工程水泥基复合材料（ECC）相结合的互补协同材料体系，以解决钢筋屈服和混凝土脆性问题。为验证该方法的可行性，对四个试件进行了反向循环荷载试验，包括传统型钢骨混凝土剪力墙（SW-R-C）、钢骨ECC墙（SW-R-ECC）、SMA钢筋混凝土墙（SW-SMA-C）和SMA钢筋ECC墙（SW-SMA-ECC）。结果表明，与SW-R-C相比，SW-SMA-C试样具有显著的自定心能力，即使在大变形后，其自定心能力仍能达到85%以上。此外，SW-SMA-ECC试样除了减少残余位移外，还具有更好的损伤降低和延性。提出的方法表明，SMA与ECC相结合可以更有效地改善剪力墙的抗震性能。

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