Colliding pipes

Hi,

I'm quite new to kangaroo, so this question is probably very easy to awnser, but I can't seem to solve it myself. 

I've got a set of pipes which are connected to the ground and are supposed to fall down and collide. This is part of a bigger script in which I want to generate a kind of grass field which comes up when attractor points get closer and falls down again when moving away. 

The problem however is the collision of the pipes. I tried to make them collide, but then they seem to get stuck. I also did divide the curve and create springs between the pieces, but then everything seems to get messed up. I hope anybody knows how to make them collide without making them stuck in a solid position. thanks so much!!!!!!!!