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Footfall Analysis

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Message 1 of 12
GabrieleNovembri1027
4997 Views, 11 Replies

Footfall Analysis

hello,
has anyone ever tried to do analysis a footfall with Robot?.
I always get the same error (see attached image). Anyone know where I can find a tutorial?
thanks

11 REPLIES 11
Message 2 of 12


@GabrieleNovembri1027 wrote:

hello,
has anyone ever tried to do analysis a footfall with Robot?.
I always get the same error (see attached image). Anyone know where I can find a tutorial?
thanks


I'm attaching a document with an example of such analysis. I hope you find it useful. Mind that you should set the solver type as Automatic as the Multithreaded one is not available for this kind of analysis.



Artur Kosakowski
Message 3 of 12

Hi,
thanks for the material and very useful information. I'm doing some tests and I noticed some problems. (see attached picture) The problem appears to be related to 64-Bit Version. Do you know if the result is correct despite the error?

Thanks

Message 4 of 12


@GabrieleNovembri1027 wrote:

Hi,
thanks for the material and very useful information. I'm doing some tests and I noticed some problems. (see attached picture) The problem appears to be related to 64-Bit Version. Do you know if the result is correct despite the error?

Thanks


I assume this is the consequence of the parameters you set rather than the error. I think that the only active mass direction is  Z which means you cannot have the results for disabled X and Y.



Artur Kosakowski
Message 5 of 12

hi,
I agree with you but I think it would be more useful to have a value of zero rather than -1, j #
thanks

Message 6 of 12


@GabrieleNovembri1027 wrote:

hi,
I agree with you but I think it would be more useful to have a value of zero rather than -1, j #
thanks


I agree that 0s will look better (not sure if in this case they are of any use anyway Smiley Happy). I will discuss such change with the developers.



Artur Kosakowski
Message 7 of 12

 


@GabrieleNovembri1027 wrote:

hi,
I agree with you but I think it would be more useful to have a value of zero rather than -1, j #
thanks


I agree that 0s will look better (not sure if in this case they are of any use anyway Smiley Happy). I will discuss such change with the developers.


In v.2013 this should be displayed as N/A (not available).



Artur Kosakowski
Message 8 of 12

Great ArturSmiley Very Happy

Message 9 of 12

Hello,

 

Would anyone know from which part of BS 5400 the limit response factor of R<64   for footbridges is taken?  Can not find it in any BS5400 I have.

 

Thank you in advance

Message 10 of 12
Calum_Scott
in reply to: vmorkunas

A basic question likely solved by a simple answer as I am a complete novice with RSA...

 

...how do you ensure the self weight of the structure, plus additional dead loads and a percentage of the live load are taken account of in the footfall analysis?

 

I am modelling a floor plate with 7 x 4 bays in accordance with the SCI P354 guide.

Message 11 of 12
Calum_Scott
in reply to: vmorkunas

I've just seen this in the Concrete Centre guide to vibration on page 20:

 

Message 12 of 12
Calum_Scott
in reply to: Calum_Scott

Can somebody confirm that by carrying out a self-excitation footfall analysis on RSA is equivalent to assessing a floorplate for continuous vibration? Also, can it be confirmed that, by isolating an area of floorplate as a corridor to assess the implication on adjacent rooms (receptor nodes) and adopting full excitation is equivalent to the VDV approach in SCI P354?

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