What does this research mean for the field?

Incorporating soil-structure interaction (SSI) in nonlinear response history analysis significantly influences foundation design demands, basement inertia forces, and floor accelerations, even when above-ground interstory drift remains largely unaffected. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To evaluate how explicitly modeling soil–structure interaction affects seismic response and design demands across the superstructure, basement, and foundation of a tall hospital building.

September 10, 2026Earthquake Spectra

Nonlinear Response History Soil–Structure Interaction Studies on UCSF Health Helen Diller Hospital Building

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Authors

ARAndres Rodriguez‐Burneo MPMarios Panagiotou JRJosé I. Restrepo

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Overview

Simulation study reveals significant foundation inertia forces and altered floor accelerations from soil–structure interaction in a tall hospital, highlighting critical seismic basement demands.

Key Points

To evaluate how explicitly modeling soil–structure interaction affects seismic response and design demands across the superstructure, basement, and foundation of a tall hospital building.
Conducted nonlinear response history analyses on a 15-story hospital with two basement levels and a pile foundation situated near the San Andreas Fault.
Employed a parametric modeling approach starting with a fixed-base benchmark and progressively refining the foundation and soil system using springs and dashpots.
Higher dynamic modes associated with the massive foundation footprint generated significant inertia forces within the basement and foundation even at small lateral deformations.
Soil–structure interaction significantly altered building floor accelerations and foundation design demands, although superstructure interstory drifts remained largely unaffected.
Quantified distinct energy dissipation contributions from pile radiation damping, soil hysteretic behavior, retaining wall passive earth pressures, and slab-on-grade friction.

Cite This Study

Rodriguez‐Burneo et al. (2026) studied this question.

synapsesocial.com/papers/6aa27afb58559d80afc73ea7 https://doi.org/10.1002/esp4.70119

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September 10, 2026Earthquake Spectra

Nonlinear Response History Soil–Structure Interaction Studies on UCSF Health Helen Diller Hospital Building

View Full Paper

Ask AI

Bookmark

Authors

ARAndres Rodriguez‐Burneo MPMarios Panagiotou JRJosé I. Restrepo

Discussion

Member takes

Overview

Simulation study reveals significant foundation inertia forces and altered floor accelerations from soil–structure interaction in a tall hospital, highlighting critical seismic basement demands.

Key Points

To evaluate how explicitly modeling soil–structure interaction affects seismic response and design demands across the superstructure, basement, and foundation of a tall hospital building.
Conducted nonlinear response history analyses on a 15-story hospital with two basement levels and a pile foundation situated near the San Andreas Fault.
Employed a parametric modeling approach starting with a fixed-base benchmark and progressively refining the foundation and soil system using springs and dashpots.
Higher dynamic modes associated with the massive foundation footprint generated significant inertia forces within the basement and foundation even at small lateral deformations.
Soil–structure interaction significantly altered building floor accelerations and foundation design demands, although superstructure interstory drifts remained largely unaffected.
Quantified distinct energy dissipation contributions from pile radiation damping, soil hysteretic behavior, retaining wall passive earth pressures, and slab-on-grade friction.

Cite This Study

Rodriguez‐Burneo et al. (2026) studied this question.

synapsesocial.com/papers/6aa27afb58559d80afc73ea7 https://doi.org/10.1002/esp4.70119

View Full Paper

Ask AI

Bookmark