NZ Society for Earthquake Engineering (NZSEE) Conference 2023 Auckland
Earthquake shaking can cause liquefaction in certain types of soil. The associated loss of soil strength and stiffness coupled with any lateral ground movement can impart large lateral loads (kinematic loads) to buildings and their foundations, which can be very damaging. In addition to the kinematic loads, the foundations are also subjected to lateral inertia loading (base shear) from the building. Show more…Inadequate consideration of these loads can result in unacceptable performance of the foundation and structure. Various methods to assess the components of kinematic load for pseudo-static analyses are available. This paper presents a literature review of these methods. It was found that calculated kinematic loads on a pile can vary significantly depending on the method chosen, and soil profile present. Comparisons are made for an example soil profile, and suggestions provided for design. This paper also presents a literature review of recommended combinations of concurrent base shear and kinematic loads. It was found that there is significant variability between guidelines, and the majority of the guidelines are typically for low period structures (bridges, wharves etc). Suggestions are provided on percentages of peak base shear to consider in combination with kinematic loads, and factors to consider when making this selection. Show less…
