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Numerical analyses for seismic retrofit design Lions Gate Bridge, Vancouver, British Columbia
Published in Christine Detournay, Roger Hart, FLAC and Numerical Modeling in Geomechanics, 2020
South-western British Columbia is an area of active seismicity. The oceanic Juan de Fuca plate is subducting under the North American continental plate. This results in stresses within and between the plates and periodic earthquakes. Earthquake sources include those within the crust of the North American plate, intra-plate earthquakes within the subductucting Juan de Fuca plate, and inter-plate subduction earthquakes.
Earth Systems and Cycles
Published in Dexter Perkins, Kevin R. Henke, Adam C. Simon, Lance D. Yarbrough, Earth Materials, 2019
Dexter Perkins, Kevin R. Henke, Adam C. Simon, Lance D. Yarbrough
The sizes and compositions of the lithospheric plates vary greatly. The largest, the Pacific Plate, is about 103 million square kilometers (40 million square miles) and is composed almost entirely of oceanic crust and mantle (Fig. 2.24). In contrast, the second largest plate, the North American Plate (76 million square kilometers; 30 million square miles), is about half continental material but also includes some lithosphere beneath the Atlantic and other oceans. The smallest of the seven major plates is the South American Plate (43 million square kilometers; 17 million square miles), but geologists have identified many smaller plates termed minor plates and even smaller ones called microplates. All of the plates, no matter their size, have the potential to move independently of each other.
Reliability and safety engineering: The principles innovation and optimisation of German and Japanese product constructions
Published in Stein Haugen, Anne Barros, Coen van Gulijk, Trond Kongsvik, Jan Erik Vinnem, Safety and Reliability – Safe Societies in a Changing World, 2018
A strong impact on innovative or optimised solutions are geographical impacts. The comparison between Japan and Germany shows obvious differences: Japan is located at the rupture zone of four tectonic plates of the earth crust: North American plate in the north,Eurasien plate in the west,Philippines plate in the south andPacific plate in the east.
Seismic Performance and Collapse Fragility of Balloon-Framed CLT School Building
Published in Journal of Earthquake Engineering, 2023
Yuxin Pan, Md Shahnewaz, Thomas Tannert
To perform NLTHA and IDA on a 3D model, appropriate bi-directional ground motion records that represent the characteristic seismicity of the location need to be selected. The building site, Vancouver, BC, is located in an active seismic region, called the Cascadia Subduction Zone (Pan, Ventura, and Tannert 2020). The local seismicity is dominated by the subduction of the Juan de Fuca plate beneath the continental North American plate. The earthquake hazard is contributed by three sources: (1) shallow crustal earthquakes within the crust of the North American plate; (2) subduction inslab earthquakes within the sinking Juan de Fuca plate; and (3) subduction interface earthquakes at the interface of two plates (Adams et al. 2015).