Shake Table Testing of a Full-Scale Five-Story Building: Seismic Performance of Precast Concrete Cladding Panels

Abstract eng:
Precast concrete cladding (PCC) is used in many regions of the world as an architectural façade for buildings. Use of PCC is appealing in that panels can be constructed offsite and quickly installed on a finished structural skeleton to complete the building envelope. Detailing of the PCC panel joints and connections to the building must carefully consider the movement that the building will undergo during its service life – including the potentially intense effects of an earthquake. Although code prescribed seismic design requirements provide nominal guidance regarding the desirable features of the PCC and its connections, much is still unknown regarding their actual behavior during an earthquake. Moreover, to date, only a handful of full-scale tests have been conducted to investigate the behavior of the PCC under earthquake loading, and even fewer have been conducted with the PCC attached to a fullscale building. To address the need for system-level experimental data, a full-scale five-story building was tested on the Network for Earthquake Engineering Simulation (NEES) Large Outdoor HighPerformance Shake Table at the University of California, San Diego. This structure was seismically tested in two phases, namely, while isolated and fixed at its base. Two different types of façades were installed on the building, namely a lightweight metal stud system overlaid with stucco and a punchout window-style PCC system. Push-pull, sliding, flexing, and a new yielding connection were investigated within the PCC system. In addition variation in the panel corner details were implemented. This paper describes the performance and the measured experimental response of the precast concrete cladding panels installed at the upper levels of the test building.

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