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With this email, we would like to show you how special DReW Seismic is, our new software for the calculation of permanent displacements of embedded cantilever retaining walls due to earthquakes

Take a look at this application of the software

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We have recently published a video tutorial about DReW Seismic, where a practical application is shown.

Click on the image or the button below to watch the video.

DReW Seismic is not like other software!

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The calculation of permanent displacements of embedded cantilever retaining walls due to earthquakes is explicitly required by many national standards as well as Eurocodes 7-8.
All the available commercial software perform the calculation using a pseudo-static approach, where the earthquake is synthesized through an equivalent static force function of the horizontal seismic coefficient kh. However, simplifying a dynamic action, such as an earthquake, with a simple constant coefficient is not the most realistic solution. The problem could be tackled by means of complex numerical techniques which, however, are unsuitable for practical applications, as they are very expensive from a computational point of view and require a large number of constitutive parameters of difficult determination.

In this context DReW Seismic comes into play, which makes it possible to predict the permanent displacements of embedded cantilever retaining walls due to earthquakes by solving the equation of motion of the structure, subjected to an appropriate distribution of contact stresses resulting from a given acceleration time-history. In particular, the method calculates the wall displacements when the ground acceleration exceeds a threshold value, which is not kept constant but is updated during the earthquake.

Calculation method published in the most prestigious geotechnical journal

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The calculation method employed, which is simple to use and requires a limited number of input parameters, has been recently published in the journal "Géotechnique," the most prestigious among geotechnical journals.
To give you an idea, this is the same journal where the methods by Newmark and Morgenstern & Price were published, just to mention some. The method has also been validated through its application to several case studies well-documented in the literature, referring to which the obtained results were always in good agreement with what actually observed.

Besides being a standalone software, Drew Seismic can also interact with the Geostru software SPW

If you are an SPW user, you can purchase DReW Seismic at a 50% discount by replying to this email!