Events Calendar

Astani CEE Ph.D. Seminar

Speaker: Wen-Young Liu and Yujing Hu , Astani CEE Ph.D. Students

Talk Title: Diffraction of Elastic Waves Around Layered Strata With Irregular Topography / Seismic Performance of Tilt-Up Structures

Abstract: First Presenter: Wen-Young Liu

Diffraction Around an Irregular Layered Elastic Media – Love and Body SH Waves, Rayleigh and Body P-SV Waves are to be investigated by weighted-residual method along with Fourier half-range wave expressions. Diffracted mode shapes and spectral amplification characteristics of Love and Body SH Waves, Rayleigh waves and P-SV-waves at different frequencies are examined and discussed.


Second Presenter: Yujing Hu
Title: Performance of Tilt-Up Structures

Abstract:

Tilt-up construction is a cost-effective technique which has been widely used in North America, South America and New Zealand. It is estimated that over 15% of all industrial buildings are Tilt-Up in the United States. Although economical to build, this type of structure is vulnerable to strong ground motions. Severe damage to tilt-up structures is reported during past major earthquakes around the world. This research evaluates the effects of moderate and strong ground motions on different types of tilt-up buildings, in order to estimate the potential vulnerability of the structural system. Three dimensional, linear and nonlinear models of three types of tilt-up structures are developed. Nonlinear elements are incorporated for Gluam Beam/Wall connections, Purlin/Wall connections, Panel/Panel connections and roof. Inelastic characteristics for these components are obtained from a series of previous experiments. In addition, cumulative damage of some critical structural components of tilt-up structures is studied by considering low-cycle fatigue problem.

Location: SLH 102

Audiences: Everyone Is Invited

Contact: Evangeline Reyes