Seismic Design & Analysis: Delve Underground's Expertise in Earthquake Engineering

At Delve Underground, we pride ourselves on addressing the world’s most challenging underground problems with innovative and practical solutions. Our specialized team in seismic design and analysis provides comprehensive earthquake engineering services for a wide range of critical underground projects globally. Our expertise spans across various aspects of seismic design, ensuring that we deliver robust and reliable solutions tailored to our clients’ needs.

The key capabilities of our seismic design and analysis team are:

• Seismic Source Characterization: We identify and characterize seismic sources for seismic hazard analysis.
• Ground Motion Characterization: Our team excels in developing both traditional and advanced models, including partially ergodic and non-ergodic models, to characterize ground motions.
• Probabilistic Seismic Hazard Analysis (PSHA): We utilize PSHA to inform the selection and scaling of ground motion time histories.
• Deterministic Seismic Hazard Analysis (DSHA): We utilize DSHA to inform the selection and scaling of ground motion time histories. Our deterministic approach provides valuable insights into potential seismic events and their impacts.
• Conditional Mean Spectra Development: We create conditional mean spectra to support the design and assessment of structures.
• Regulator/Code Compliant Response Spectra Development: We ensure compliance with regulatory codes such as American Society of Civil Engineers 7-16, 2019 California Building Code, 2018 International Building Code, Federal Energy Regulatory Commission, and other project-governing requirements by developing accurate response spectra.
• Site Response Analysis: Our team performs equivalent linear, nonlinear, and random vibration theory analyses to assess site responses. We also provide site-specific time history selection and modification based on required guidelines and governing codes.
• Peer Review of Seismic Hazard Studies: We offer peer review services to validate and enhance seismic hazard studies.

• Seismic Analysis of Soil-Structure Interaction (SSI): We perform advanced SSI analyses to capture the effects of both seismic ground shaking and permanent ground deformation, including fault offset. Our capabilities include dynamic SSI analyses (e.g., nonlinear time-domain soil–structure interaction and seismic racking analyses) as well as pseudo-static evaluations for fault deformation and ground strain impacts on underground structures.

By leveraging our extensive expertise and state-of-the-art methodologies, Delve Underground is at the forefront of earthquake engineering, ready to tackle the most demanding underground infrastructure projects worldwide.