The results of the experimental research program realized on a bridge model constructed by using the seismically isolated system upgraded with space-bar devices (USI-SB) are presented in the paper. The installed adaptable system for seismic protection of bridges utilizes double spherical rolling seismic bearings (DSRSB) as seismic isolators, while the qualitative improvement of seismic performances is achieved through the use of novel adjustable multi-directional space-bar energy dissipation (SB-ED) devices. The experimental program consisted of quasi-static testing of isolation and energy dissipation devices under the cyclic loading and extensive shaking-table testing of a large-scale bridge model with installed USI-SB system. For both types of devices, a very stable all-directional response during cycling tests, as well as the favorable hysteretic behavior of the energy dissipation devices along the entire range of applied large displacements were registered. In the dynamic testing, the system showed high seismic response modification performances needed for the efficient protection, exhibiting its large potential in the qualitative improvement of seismic performances of isolated bridges.

本文介绍了在使用空间杆装置升级的隔震系统 (USI-SB) 构建的桥梁模型上实现的实验研究计划的结果。安装的桥梁抗震适应性系统采用双球面滚动抗震支座（DSRSB）作为隔震器，同时通过采用新型可调多向空间杆耗能（SB-ED）实现抗震性能的质的提高设备。实验计划包括在循环载荷下对隔离和能量耗散装置进行准静态测试，以及对安装了 USI-SB 系统的大型桥梁模型进行广泛的振动台测试。对于这两种类型的设备，循环测试期间非常稳定的全方位响应，以及能量耗散装置在整个应用大位移范围内的有利滞后行为。在动力试验中，该系统表现出有效保护所需的高地震响应修正性能，在隔离桥梁抗震性能的质化改进方面显示出巨大的潜力。