Seismic Fragility of Ordinary Reinforced Concrete Shear Walls with Coupling Beams Designed Using a Performance-Based Procedure

Abstract

The seismic performance of ordinary reinforced concrete shear walls, that are commonly used in high-rise residential buildings in Korea (h < 60 m), but are prohibited for tall buildings (h ≥ 60 m), is evaluated in this research project within the framework of collapse probability. Three bidimensional analytical models comprised of both coupled and uncoupled shear walls exceeding 60 m in height were designed using nonlinear dynamic analysis in accordance with Korean performance-based seismic design guidelines. Seismic design based on nonlinear dynamic analysis was performed using different shear force amplification factors in order to determine an appropriate factor. Then, an incremental dynamic analysis was performed to evaluate collapse fragility in accordance with the (Federal Emergency Management Agency) FEMA P695 procedure. Four engineering demand parameters including inter-story drift, plastic hinge rotation angle, concrete compressive strain and shear force were introduced to investigate the collapse probability of the designed analytical models. For all analytical models, flexural failure was the primary failure mode but shear force amplification factors played an important role in order to meet the requirement on collapse probability. High-rise ordinary reinforced concrete shear walls designed using seven pairs of ground motion components and a shear force amplification factor ≥ 1.2 were adequate to satisfy the criteria on collapse probability and the collapse margin ratio prescribed in FEMA P695.

Comparative Assessment of Performance-Based Design Methodologies Applied to a R.C. Shear-Wall Building

“…Performance-based design emerged from the need of structural designers to rationalize code requirements, which were developed empirically or based on expert judgments, and to supersede these requirements in design by demonstrating equivalent or superior performance [1,2]. This approach serves as a tool that allows for the validation of architectural designs that are noncompliant with code, accommodating the use of new materials and/or innovative structural systems, and exempting the limits of regulations that govern traditional methods, such as the maximum permitted height of a building [3][4][5]. Additionally, decision makers need to quantify the benefits of investing in a superior seismic-resistant structure and analyze the damages and losses it could suffer during its service life based on its performance [6][7][8][9][10][11].…”

A Comprehensive Study on the Effect of Regular and Staggered Openings on the Seismic Performance of Shear Walls

“…Coccia et al [19] reported the behaviour of masonry walls retrofitted with vertical FRP rebars, and their study showed that the conventional seismic retrofitting techniques on masonry walls influence the seismic performance of the element, which is typically modified in an out-of-plane bending behaviour. Further, the study of Jeon et al [20] investigated the seismic fragility of ordinary reinforced concrete shear walls with coupling beams, and their study showed that high-rise ordinary reinforced concrete shear walls designed using seven pairs of ground motion components and a shear force amplification factor ≥ 1.2 were adequate to satisfy the criteria on collapse probability and the collapse margin ratio prescribed in FEMA P695.…”

Experimental and Numerical Investigation of Plastic–Concrete Waterproof Walls of an Underground Granary Subject to Combined Bending Moment and Water Pressure

“…In order to improve the water resistance and durability of cast-in-place reinforced concrete underground silos from the perspective of applied science [16][17][18][19], and to improve the quality of internal grain storage, improving silo performance from the perspective of concrete materials is a popular research topic. Poonyakan et al [20] improved low thermal conductivity concrete using plastic wastes.…”