Seismic assessment of earthquake‐resilient tall pier bridges using rocking foundation retrofitted with various energy dissipation devices

Abstract

While conventional seismic isolation bearings are usually inefficient for bridges with tall piers, rocking foundation is a promising approach mitigating their seismic demands and improving post-earthquake resilience. However, excessive tilt angle might occur at rocking interface and lead to overturning during strong earthquake excitations. This paper investigates the efficiency of various energy dissipation devices in improving the seismic performance of rocking foundations employed in tall pier bridge systems. The devices

Experiment investigation and in situ test of hybrid vibration bearing system applied to overtrack historical buildings

“…The numerical approaches and nondestructive assessment of timber roofs in historical masonry building were introduced by Branco and Longarini 29,30 . Chen et al introduced the seismic assessment and retrofitting of tall pier bridges using rubber isolators and damping devices 31–33 …”

“…29,30 Chen et al introduced the seismic assessment and retrofitting of tall pier bridges using rubber isolators and damping devices. [31][32][33] Application of three-dimensional isolation system is an apparent method to improve the structural safety under earthquakes and to mitigate metro-induced vibrations. At present, the investigated three-dimensional devices include thick rubber bearings, air springs, disc springs, hydrocylinders, and MR dampers.…”

Multi‐level breakage‐triggered radio frequency identification‐based deformation sensor for rapid post‐earthquake loss assessment of buildings: Concept, development, and application

“…The architectural walls have to be removed in order to find out the structural conditions (buckling or yielding) of the hidden braces. This additional task will increase the repair time (RT) and repair cost (RC) of the buildings and thus hinder rapid recovery, recalling that “rapidity” is one of the “4R” properties of a resilient community 3–9 …”

“…This additional task will increase the repair time (RT) and repair cost (RC) of the buildings and thus hinder rapid recovery, recalling that "rapidity" is one of the "4R" properties of a resilient community. [3][4][5][6][7][8][9] As a type of concentrically braced steel structure, tension-only concentrically braced frames (TOCBFs) are widely used in low-rise industrial, commercial, and residential steel buildings because of the efficient way of resisting lateral forces and the economic advantage. [10][11][12] A TOCBF typically consists of a lateral and a vertical load resisting system.…”

Comparative nonlinear seismic analysis of an existing RC bridge designed with obsolete codes

“…There is a global tendency to use numerical models with high level of complexity and details to assess the comprehensive behavior of structures. Nevertheless, due to the high demand for computational resources, simplified models that consider concentrated plastic hinges (Guo et al, 2020; Zheng et al, 2015), as well as those that consider fiber elements (Chen and Li, 2020; Hassan and Billah, 2020; Su et al, 2020; Zhang et al, 2020), are well established. Although these simplified models allow numerical simulations with low computational cost, the applicability of simplified models to represent damage in RC elements needs to be deeply studied (Su et al, 2020).…”