Dear sir/madam, I'm working on a dynamic analysis of a multilayered soil profile improved with stone columns & piles. I have some questions regarding the parameters: While using the UBC3D model for liquefaction, we know that it overestimates the shear…

Dear sir/madam, I'm working on a dynamic analysis in a multilayered soil profile improved with stone colums & piles. I have some questions regarding this analysis: 1) To evaluate the liquefaction, i should use the dynamic with consolidation calculation…

Dear sir/madam, In the Plaxis manuals, it is stated that input motion should be factored by 0.5 if the applied input motion is rock outcrop motion and compliant base boundary is used at the bottom boundary. If we use an rock outcrop earthquke record…

Dear sir/madam, I have a simple question about the usage of rock outcrop input motion in dynamic analysis with compliant base boundary: 1) Using a line displacement with u=0.5 and input motion as its current situation 2) Scaling the input motion…

Dear sir/madam, I'm studying on a dynamic analysis model consist of nonhomogeneous soil layers improved with stone columns and rock socketed piles connected to raft foundation. I'm using two models: 1) Piles modeled with embedded beam row 2) Piles…

Dear sir/madam, I'm studying on an earthquake analysis with Plaxis 2D (with an input motion whose duration is almost 12s). While acceleration values goes around 0m/s^2 after 8s (drift correction is applied), there is a sudden and significant increase…

Hi, Is there a way of restrict the failure slope that PLAXIS 2D give me? For example in an earth dam I want that my slip mass for a pseudostatic analysis starts in the crest, is there a way to do that? Thanks

Dear Support Team, When I applied extremely low ks & kn values for a sensitivity check, I found a gap at the interface before activating the interface element . I suspect that ks & kn values defined by "direct" are applied to the interface element…

How to measure uplift in a tunnel due to liquefaction in PLAXIS 2D?

Dear sir/madam, Is it normal to have plastic points in the model at the end of a dynamic analysis like in the figure i shared below? I'm facing with this situation in some of the earthquake records, but not all of them. When i tried another earthquake…

Dear sir/madam, I have two questions about the usage of rayleigh damping, 1) How should we assign the rayleigh damping coefficients in layered soils? I mean that sohuld we determine the f1 and f2 values for each layer or should we determine uniform…

Hello， If in phase 1, there are two layers of soil in the model, but in phase 2, I need to replace the material of the upper soil with concrete, and at the same time, at this stage, I do not want this layer of concrete to cause any pressure on the lower…

Is there a way in PLAIXS 2D that can obtain the mode shape of the structure?

How to simulate cyclic triaxial test in Plaxis software? Is there any particular example video for the same? And how can I observe pore pressure ratio with time?

Dear sir/madam, I have a question about the rock outcrop motion in dynamic analysis. When the input motion is a rock outcrop motion, we should scale this motion by 0.5 for the compliant base boundary. But, i'm wondering about if we can make deconvolution…

Dear sir/madam, I have a question about maximum step number and sub step number in dynamic analysis. For example, when we give an input motion (which has a duration of 33s and time interval of 0.01s) into to model, a) Setting the maximum step number…

Hi all, Any idea how to model this one in Plaxis 2D and what type of analyses are needed to do for stability check of the slope proteced by geo-cell and having surface and horizontal drains? Thanks.

Hi all, I created a 2D Plaxis model where we have a tunnel 16m under the surface. The water level is 11m above the ridge. In the construction state, the water is drained 4m around the tunnel. I have tried to model this with a dry zone around the tunnel…

I am very new to plaxis and i am trying to understand modeling a retaining wall (from my understanding this is done using a plate element), i have a general idea of the steps but the values to input are giving me some trouble. I want to model steel sheet…

I am currently working on a liquefaction analysis using the PM4Silt and PM4Sand models for a layered soil model in PLAXIS 2D. However, I have encountered an issue where the liquefied points are observed in the static stage only before the dynamic analysis…

Hello All, I am trying to use the soil parameter optimization based off the soil testing module in PLAXIS. I see for doing this, first I need a "Reference curve" (in the example, it shows as 100 kPa). I believe that is a real time lab data and not…

Hello, I've noticed an unreasonable difference of the maximum value and minimum value of groundwater flow when changing between the shadings and arrows views as presented below (0.7910 vs 0.9002). Is it because one is showing the value for a stress point…

I download the PLAXIS LE 2D sofware but the graphics are not similar to PLAXIS 2D. I need to know if it can be automatize to run a lot of models at once.

In the model, when the peak model is drawn on the node 2650 acceleration-time graph, it also shows abnormal behavior on the acceleration time graph. I couldn't find the cause of the problem.

Hi, is it possible to define a strength parameter (such as cohesion and friction angle) as a function of the deviatoric strains? There are two acceptable options: 1. The parameters are updated along with the strains during the analyses. 2. The parameters…