Shaking Table Test of a Friction Sliding System on a Concrete Member with Variable Curvature Fabricated by a Three-dimensional Printer
Shaking Table Test of a Friction Sliding System on a Concrete Member with Variable Curvature Fabricated by a Three-dimensional Printer
复制标题
DOI：
10.1080/13632469.2021.1991515
复制
发表时间：
2021-10-24
影响因子：
2.6
通讯作者：
Ishigaki, Naomitsu
中科院分区：
文献类型：
--
作者：
Brito, Miguel B.;Akiyama, Mitsuyoshi;Ishigaki, Naomitsu
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，需要生产弹性结构需要使用昂贵的材料，这些材料基本上仅限于关键结构。为了实现一个低成本的弹性系统，一种新的摩擦摆滑动系统制造的钢和混凝土进行了实验评估。简单的凹面形状安装横向于对方;和由三维打印机制造的可变曲率的球形形状进行了评估。进行了不同加速度强度的双向振动台试验，滑移过程中输入加速度降低50%。球形的形状表现出稳定的滞后响应，即使受到强烈的地面运动。所提出的桥梁结构摩擦摆滑动系统提供了一种低成本的设计解决方案，可以确保事后的可操作性。
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.