LRFD for Geotechnical Engineering Features: Deep Foundations: Lateral Analysis

*Open only to Central Ohio Section Members
*Seating is limited to the first 25 people
*Bring your own lunch

Purpose and Background
This webinar offering concentrates on lateral analysis of deep foundations. Deep foundations are often used for structures which experience large lateral loads for which shallow foundations are not feasible due to large overturning moments and resultant load eccentricities. The LRFD platform offers a rational framework for performing lateral analysis of deep foundations. The webinar will be primarily based on the 6th Edition (2012) of LRFD Bridge Design Specifications developed by the American Association of State Highway and Transportation Officials (AASHTO). Applicable articles in Sections 3, 5, 6, 10, and 11 of AASHTO LRFD Specifications will be used as a basis of discussion. The webinar material will be applicable to different types of deep foundations such as driven piles, drilled shafts, and micropiles.

The webinar will include discussion on loads and limit states from a lateral analysis perspective, models for lateral soil resistance using soil-structure interaction concepts such as the p-y and the strain wedge methods, structural resistance of piles with emphasis on flexural resistance of reinforced concrete and steel piles, pile head fixity, group behavior, equivalent cantilever model, step-by-step method for lateral load analysis, extreme events, scour, and other special considerations such as downdrag, lateral squeeze and collapse susceptible soils. A detailed example problem will be included to demonstrate the application of LRFD principles.

The webinar assumes that the participant has a working knowledge of lateral load analysis including development of appropriate subsurface investigations and geotechnical data, interpretation of geotechnical data to develop geomaterial properties for lateral analysis, and use of commonly available software for lateral analysis such as COM624P. Accordingly, the webinar will concentrate on application of LRFD principles to lateral analysis of deep foundations.

RSVP to newsletter@centralohioasce.com by Friday, April 4, 2014.

Webinar Outline

• Loads and limit states
• Soil structure interaction model
• Structural/geotechnical analyses
• Example problem
• Equivalent cantilever model
• Steps for lateral load analysis
• Extreme events
• Special considerations
• References

Primary Discussion Topics

• Loads and limit states from a lateral analysis perspective
• Models for lateral soil resistance using soil-structure interaction concepts such as the p-y method, structural resistance of piles, pile head fixity, group behavior, and equivalent cantilever model
• Extreme events, scour and other special considerations such as downdrag, lateral squeeze and collapse susceptible soils
• Steps for lateral load analysis
• A detailed example problem to demonstrate the application of LRFD principles

Learning Outcomes

• Understand lateral analysis of deep foundations using LRFD principles

Webinar Benefits

• Build on the knowledge gained from previous LRFD webinars in this series
• Learn basics of lateral analysis of deep foundations based on LRFD principles
• Examine the opportunities and benefits of improved communications between geotechnical and structural specialists

Intended Audience

• Geotechnical specialists
• Structural specialists
• General civil engineers involved in the analysis and design of deep foundations

See the ASCE website for more info.

The Central Ohio Section of ASCE sponsors free continuing education webinars as a service to our members. These webinars are produced by ASCE and normally cost $250 or $300 for ASCE members. However, the Central Ohio Section is paying the registration fee and inviting any interested section members to attend for free. Just RSVP by the deadline. Seating is limited, so do not delay.

You can see the complete list of webinars available from ASCE National on their website. If you see one you like, let us know. If you and your company would like to host one, let us know that too. If you open it up to any interested Central Ohio ASCE section members to come, we will pay the registration fee.