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Soil-Structure Interaction and Geotechnical Earthquake Engineering Through Federal and State Funded Research Grants

Faculty Research - December 2015

Luis G. Arboleda-Monsalve Photo

The research projects that Dr. Luis Arboleda is developing at CSULB revolve around the integration of full-scale numerical simulations with real field monitoring data, laboratory data, and in situ testing to gain a deeper understanding of observed soil and structural behavior.

Dr. Arboleda and his team are currently focusing their attention on the development of design recommendations and analyses of two urban cofferdams with the goal to avoid unintended ground movements as a result of excavation activities. Design recommendations are being issued through the research grant sponsored by the National Science Foundation (Award No. 1538506) in a two-year research effort titled: “Effects of Pre-Excavation Activities on the Performance of Urban Cofferdams.” This project uses advanced constitutive soil models to simulate full-scale construction projects.

The California Department of Transportation (CALTRANS) via the METRANS Transportation Center is also funding Dr. Arboleda’s research: “Simulation of Liquefaction-induced Damage of the Port of Long Beach.” Dr. Arboleda and his team of undergraduate and graduate students are studying the liquefaction potential of the hydraulic fills that constitute most of the subsurface at the Port of Long Beach. Geotechnical field and laboratory tests are being used to calibrate advanced constitutive soil models. The UBCPLM-3D soil model is being used due to its practicality to develop earthquake engineering analyses. Complementary research proposals are currently under evaluation by NSF-Engineering for Natural Hazards Program (ENH) to develop a comprehensive framework for resilient design of tall buildings incorporating soil-foundation-structure-interaction (SFSI) to achieve desired lifetime system-level building performance under seismic motions. The ultimate goal of Dr. Arboleda’s research efforts is to develop resilience-based design approaches for civil infrastructure and underground construction.

Laboratory testing is also required to study soil behavior by recreating in situ conditions and the stress history of the material. Laboratory testing results are used in Dr. Arboleda’s research as the main source of optimization of soil parameters for advanced constitutive soil models. Currently, Dr. Arboleda is developing an ambitious plan of modernization of the testing capabilities of the geotechnical engineering laboratory by integrating dynamic triaxial testing systems with internal instrumentation and bender elements as well as constant rate of strain consolidation devices with pore pressure measurements and controlled back pressure. With a functional laboratory and research-funded grants at the federal and state levels, field performance data, laboratory testing, and numerical modeling are currently being integrated in an ambitious plan to support undergraduate and graduate research assistants to accomplish high-impact research objectives from The Beach.

Integration of field performance data, laboratory testing, and numerical modeling through federal and state funded research grants

Integration of field performance data, laboratory testing, and numerical modeling through federal and state funded research grants

Research @ the Beach | Faculty Research