Abstract

Liquefaction induced settlement is an earthquake hazard engineers face when developing infrastructure. Current methods for estimating liquefaction induced settlement are done in a free field condition. This assumption is not an accurate way to describe the soil because in most cases the soil will bear some kind of infrastructure. Evaluation of liquefaction induced settlement in a non-free-field condition is a more appropriate way. Using the Bullock et al. CAV model, Bullock et al liquefaction induced settlement model, and probabilistic seismic hazard software from the USGS, a full performance-based procedure for the estimation of liquefaction-induced building settlement in the non-free-field condition was created. To test the validity of the program, various locations, structures, and soil profiles were tested. The output of settlement hazard curves showed results consistent to liquefaction induced settlement trends described in other research. Areas with higher seismicity had higher expected liquefaction induced settlement. Analysis of individual location revealed that soil profile, structure, and foundation all play a role in the estimation of liquefaction induced settlement. Test cases with loose soil predicted higher liquefaction induced settlement than areas with dense soils. Structure and foundation parameters are related through the bearing pressure. These parameters seem to be most influenced by bearing pressure. Test cases with higher bearing pressures showed a higher predicted liquefaction induced settlement than those with smaller bearing pressures.

Degree

MS

College and Department

Ira A. Fulton College of Engineering; Civil and Environmental Engineering

Rights

https://lib.byu.edu/about/copyright/

Date Submitted

2024-04-23

Document Type

Thesis

Handle

http://hdl.lib.byu.edu/1877/etd13217

Keywords

earthquake, liquefaction, settlement, performance-based engineering, probabilistic

Language

english

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