An analysis of pounding mitigation and stress waves in highway bridges with shape memory alloy pseudo‐rubber shock‐absorbing devices

摘要: Summary Seismic-induced pounding between adjacent structures that are insufficiently separated can cause significant structural damage, even collapse, during severe earthquakes. This paper presents an experimental and numerical investigation into mitigating on highway bridges using novel shape memory alloy pseudo-rubber shock-absorbing devices (SMAPR-SADs). The mechanical properties a theoretical model of SMAPR-SADs briefly introduced investigated. Next, series shaking table tests 1:30 steel bridge conducted to investigate the effectiveness in structures. Based results, pounding-induced stress waves analyzed wave theory cross-wavelet transform method. Subsequently, models with without proposed. mitigation mechanism is momentum theorem, their ability dissipate energy, absorption theory. Two indexes representing energy dissipation abilities proposed Finally, effect axial stiffness analyzed. results demonstrate able absorb stably significantly reduce response under seismic excitations. Copyright © 2016 John Wiley & Sons, Ltd.