I have a query about Plaxis 2D (v.21 Ultimate) Site Response function that can be used for 1D Site Response Analysis (SRA). When we select “Site Response” from the “Modify soil layers” menu, Plaxis automatically converts the main geometry of the model…

Im doing a dynamic analysis of machine foundation with various freqencies. Im using geocell as reinforcement in 2D (by using ECA). but after reinforcement there was no shift in resonance. Definite reduction in aplitudes were observed but at same frequency…

Hi, I am modelling a largescale oedometer(like) setup with dynamic loading. I have tried different soil models (soft soil,MCC, Hardening,HS small etc) to simulate the dynamic behaviour but unable to produce the excess pore pressure accumulation. Excess…

I have done a model of the hollow pile using embedded beam elements and trying to do earthquake analysis using the free field. I am encountering error code 40. also, I am unable to open output for this analysis, it's showing an error application. I also…

I have modelled one combined piled raft foundation using raft as plate and pile as embedded beam element and applied one sinusoidal loading with frequency 1 Hz and acceleration amplitude 1 m/s2 for 30 second interval at the soil model base in surface…

I am running a earthquake analysis. Earthquakes time is 35 sec. I consider the differences for using max step=3500, sub step=1 and using max step=1, substep=3500. What is the difference between this 2 situation. What is the effective numbers of step and…

Hello everyone , I got this "NaN found in stiffness matrix element. [Error code: 36]" in dynamic analysis "Earthquake" I got this error just if I use Very stiff or soft rock material in HS-small model , and using compliment base boundary at the…

Dear experts , I have this case "dynamic soil-structure interaction under earthquake " as illustrated in the figure below . When I want to obtain the maximum lateral displacement of structure there is two option 1- find the maximum difference…

kindly look to the screenshot. I have El centro earthquake acceleration in "g" unit , and my project unit in "m" and "days" , So I used scaled value 9.8 to transform the multiplier to m/s2 units .. but it seems the displacement of the soil is so high…

Hi, Highly appreciate if someone can share possible solution. I am trying to calibrate Plaxis with DeepSoil. DeepSoil gives higher PSA at the surface. Plaxis gives lower PSA at the surface I suspect that material input in Plaxis do not correspond…

Hello Best regard for all of us can someone please explain why in the dynamic load parameter the amplitude multiplier it has to be 5000 and the frequency is 50 Hz ? Thank you

Site response analysis

Hi, I am currently working on a dynamic modelling project in PLAXIS where we are obtaining the lateral earth pressures on a gravity retaining wall. The retaining wall is modelled as a linear elastic material. To export the results, I have preselected…

Q1: Is there any way to determine natural frequency of Retaining wall soil numerical model from PLAXIS? Q2: How can we see the exact element mesh size in PLAXIS? Q3: I am using Mohr-Coulomb soil model and want to introduce constant Rayleigh damping…