This third manual in our series focuses on the stability analysis of an existing gravity wall using GEO5 software. Designed for geotechnical engineers, this manual guides users through a step-by-step process of evaluating the wall’s performance under both permanent and accidental design situations. The manual is now available for download, providing valuable insights into how to assess the stability, overturning, and slip of gravity walls, particularly when subjected to extraordinary forces such as vehicle impacts.

Learning Objective:

By following this manual, users will learn how to analyze the stability of an existing gravity wall using the EN 1997-1 (EC 7-1, DA2) standard. The objective is to equip users with the skills to assess the wall’s performance under normal traffic conditions and during accidental events like vehicle crashes, ensuring that the structure remains safe and functional.

Assignment Description:

The assignment involves performing a detailed analysis of an existing gravity wall subjected to road traffic and potential vehicle impacts. Users are required to evaluate the wall’s stability, including its resistance to overturning and slip, in two construction stages: one under normal traffic conditions and the other considering an accidental load from a car crash. The manual provides a comprehensive guide on how to input data, select appropriate settings, and interpret the results within the GEO5 software environment.

Outcome:

Upon completing the assignment, users will be able to assess whether an existing gravity wall can safely withstand both everyday loads and unexpected forces. The analysis will help users determine the necessary modifications or reinforcements needed to ensure the wall’s continued stability and safety, particularly in scenarios involving vehicular impacts.

Conclusions:

The manual concludes that the existing gravity wall is satisfactory under normal road traffic conditions but fails to meet safety standards when subjected to an accidental load from a vehicle crash. The results indicate that additional measures, such as increasing the wall’s bearing capacity, introducing soil anchors, or repositioning barriers, are necessary to ensure the structure’s stability in such scenarios.

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