Retaining Wall Vehicle Impact 1

[Redtelis]

Hi guys,

Is there any design example (in Eurocodes even better) to see how to analyze and design a retaining wall which is subjected to vehicle impact as well?

I would like to see how the moments on wall and base are calculated as well as the pressure below the retaining wall base.

 

[ukengineer58]

the way the load is distrubted is the same as any other load. The issue you have is understanding the load. In UK the DMRB standards have impact loads from vehicles to cater for. But they are very large. and depends what 'damage'or not you can accept. and whether there is protection to the wall or not. this may not be applicable to your case though. for instance a small car park wont have vehicles travelling at highway speeds. your question is a bit to vague to answer with any accuracy.

 

[Redtelis]

Well, I think my question was very clear. I did not ask about what load to apply, I asked if someone knows any example with a retaining wall and a horizontal load (such as vehicle impact) on it.

 

[Settingsun]

Do you want elastic analysis, or yield line analysis like how bridge barriers are designed? Do you need a fuse point to protect the wall from extensive damage below ground level?

 

[human909]

There is many things unclear about you post. Sure your question is specific and clear. But the context is not and without more context your question cannot be adequately answered.

My first reaction was that if it is a retaining wall that retains we earth behind it the. You are going to have significant mass and resistance from the earth behind it. Given we are talking a dynamic problem then the earth mass from behind would like make the moments and base forces fairly insignificant. And you are left with impact punching.

But I'm making assumptions here about the type and size of retaining wall.

You have told us nothing. For all we know this retaining wall could be made from bamboo and mud bricks.

 

[ukengineer58]

Red - as myself and others have pointed out there are many unknowns you haven't specified. If your question is how to analyse for a horizontal load being applied, which is irrelevent what causes it, then this is basic structural anaysis. and you can get this from a suitable text book. Same if you are looking at retaining wall behaviour. its just analysis of equilibrium and stresses etc like any other problem.
Without more context its impossible to give you any more info. but a line load will have the same effect any any othe, but its point of application is critical and therefore resulting forces depend on the position. Like you assume a triangle pressure diagram for earth and the force is taken as 1/3 up.
of course you cannot guarentee where the force will strike maybe in vehicle impact. which is why relevent standards related to highway structures state forces and point of application to provide a effective 'model' of behaviour. Again as for my first reply. this may or may not be relevent in your case. but i doubt a 'worked example' outside of this that prefectly reflects your condtion. but we dont know because you havent given enough info.