Displacement-Based Seismic Design for Reinforced Masonry Shear-Wall Structures, Part 2: Validation with Shake-Table Tests

Abstract

This paper provides a comprehensive validation of a displacement-based seismic design procedure proposed in a companion paper for reinforced masonry shear-wall structures. For this purpose, a full-scale, two-story reinforced masonry specimen was tested on a shake table to examine the global and local behaviors of a low-rise reinforced masonry building designed by the proposed displacement-based procedure, and to validate the analytical tool used in the design process. This specimen successfully resisted repeated ground motions with intensities up to the maximum considered earthquake (MCE). Its performance on the shake-table demonstrates that a reinforced masonry structure designed, detailed, and constructed according to the proposed displacement-based design procedure can resist MCE earthquakes without collapse even though it may suffer severe damage. In critical regions of this specimen, elements detailed in accordance with displacement-based requirements showed more inelastic deformation capacity than the deformation limits imposed by the displacement-based design provisions proposed here. The proposed procedure produces structures that behave according to design expectations, even though severely damaged.

Displacement-Based Seismic Design for Reinforced Masonry Shear-Wall Structures, Part 1: Background and Trial Application

“…However, the design was not further refined at this stage. As discussed in the companion paper (Ahmadi et al 2015) on verification, the design was later checked using nonlinear time-history analysis and was judged satisfactory for the ground motions selected for testing. Figure 23 shows the maximum deformation demands in Walls W-1, W-2, and W-3 at the ground level, under DE-and MCE-level motions, calculated in the pushover analysis described previously.…”

“…However, the design was not further refined at this stage. As discussed in the companion paper (Ahmadi et al 2015) on verification, the design was later checked using nonlinear time-history analysis and was judged satisfactory for the ground motions selected for testing.…”

Analysis on displacement‐based seismic design method of recycled aggregate concrete‐filled square steel tube frame structures

“…Scholars had conducted a lot of research on displacement‐based seismic design of structural forms such as shear wall structures, 16 frame structures, 17–19 and hybrid structures, 20,21 and the method had gradually matured 22–24 . Lin et al 25 conducted an experimental study on three reinforced concrete columns designed using the displacement method.…”

“…The performance design of seismic structure based on displacement first needs to determine the performance design control parameters such as seismic strengthening level, performance level, and performance objective, while considering the importance of the building structure, site conditions, and the needs of the owner, to carry out the performance design not lower than basic seismic strengthening objective. [13][14][15] Scholars had conducted a lot of research on displacement-based seismic design of structural forms such as shear wall structures, 16 frame structures, [17][18][19] and hybrid structures, 20,21 and the method had gradually matured. [22][23][24] Lin et al 25 conducted an experimental study on three reinforced concrete columns designed using the displacement method.…”

Seismic Design of Box-Type Unreinforced Masonry Buildings Through Direct Displacement-Based Approach

“…A displacement based approach was proposed by Calvi [9] but it applies to seismic vulnerability assessment of existing masonry buildings at regional scale. In case of reinforced masonry buildings, a DDBD procedure was developed and validated through shaking table tests [10,11]. In this paper, the DDBD approach is specialised to unreinforced masonry (URM) buildings at site-specific scale.…”