Journal of Earthquake Engineering ( IF 2.6 ) Pub Date : 2021-10-26 , DOI: 10.1080/13632469.2021.1991515 Miguel B. Brito 1 , Mitsuyoshi Akiyama 1 , Tetsuta Seto 1 , Riki Honda 2 , Naomitsu Ishigaki 3
ABSTRACT
Bridge structures play a crucial role in the recovery process after an earthquake; however, the need to produce a resilient structure requires the implementation of expensive materials that are essentially limited to critical structures. To achieve a low-cost resilient system, a novel friction pendulum sliding system fabricated from only steel and concrete was experimentally evaluated. Simple concave shapes mounted transverse to one other; and spherical shapes with variable curvatures fabricated by a three-dimensional printer were evaluated. Bidirectional shaking table tests were conducted with different acceleration intensities, and the input acceleration was reduced by 50% during sliding. The spherical shapes exhibited stable hysteresis responses even when subjected to strong ground motions. The proposed friction pendulum sliding system for bridge structures provides a low-cost design solution that can ensure post-event operability.
中文翻译:
三维打印变曲率混凝土构件摩擦滑动系统振动台试验
摘要
桥梁结构在地震后的恢复过程中起着至关重要的作用;然而,生产弹性结构的需要需要使用基本上仅限于关键结构的昂贵材料。为了实现低成本的弹性系统,对仅由钢和混凝土制成的新型摩擦摆滑动系统进行了实验评估。相互横向安装的简单凹形;评估了由 3D 打印机制造的具有可变曲率的球形。进行了不同加速度强度的双向振动台试验,滑动过程中输入加速度降低了50%。即使受到强烈的地面运动,球形也表现出稳定的滞后响应。