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DTSTART:20250101T000000
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DTSTART;TZID=America/Phoenix:20260413T083000
DTEND;TZID=America/Phoenix:20260413T133000
DTSTAMP:20260515T013931
CREATED:20260106T220014Z
LAST-MODIFIED:20260412T220610Z
UID:10000065-1776069000-1776087000@ncsgeoresources.com
SUMMARY:Online Workshop on Deep Foundations – Lateral Analysis and Considerations for Induced Ground Deformations
DESCRIPTION:Deep foundations are designed to transfer load through unsuitable subsurface layers to suitable bearing strata. One of the key advantages of deep foundations is their ability to withstand significant lateral loads. When deep foundations are installed through a soil deposit undergoing consolidation\, the resulting relative downward movement of the soil around piles induces “downdrag” forces on the piles. If embankments are placed adjacent to deep foundations\, as in the case of bridge abutments\, “lateral squeeze” effects can induce significant unbalanced lateral forces on deep foundations. In loose\, collapse-susceptible soils\, moisture-induced soil collapse can exert significant lateral effects on deep foundations. Seismic events can generate lateral spread and liquefaction-related ground deformations. Adjacent excavations can induce differential lateral forces on deep foundations. This workshop presents a lateral analysis of deep foundations and methods for evaluating induced ground deformations in their design. The presentation will be based on the latest (2020) version of the Bridge Design Specifications (BDS) based on the Load and Resistance Factor Design (LRFD) platform of the American Association of State Highway and Transportation Officials\, which is a key component of Federal Highway Administration (FHWA) guidelines for deep foundations. Information from AASHTO’s latest (2020) Guide Specification for Service Life Design will also be presented. \nUsing a collaborative and interactive learning approach\, this virtual workshop will help you understand: (a) principles of lateral analysis of deep foundations\, and (b) the types and effects of induced ground deformations on deep foundations. The workshop will help you assimilate the crucial considerations regarding these topics through active participation\, frequent interactions\, and real-time expert feedback. The interactions will facilitate a better understanding of the nuances of the various design procedures for deep foundations which would help you avoid costly design errors in real-world projects. In between the two live sessions\, attendees will independently work on an application (e.g.\, exercises) or a reflection (e.g.\, reading) assignment. \nSESSION 1 \n\nLoads and limit states\nSoil-structure interaction model\nStructural and geotechnical elements\nExample problem\nEquivalent cantilever model\nSteps for lateral load analysis\nExtreme Events\nSpecial considerations\nReview of Session 1\nInteractive Question and Answer (Q&A) session\nAssignment of classwork\nAdjourn\n\nSESSION 2 \n\nReview of classwork\nGeneral concepts and terminology for induced ground deformations\nDowndrag and drag load\nMoisture-induced collapse of soils\nLateral squeeze\nLateral spread\nExcavation-induced effects\nSummary and comments\nClosure and references\nReview of Session 2 and full workshop\nInteractive Question and Answer (Q&A) session\nAdjourn
URL:https://ncsgeoresources.com/event/online-workshop-on-deep-foundations-lateral-analysis-and-considerations-for-induced-ground-deformations/
LOCATION:Online
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