smoothness.. poly surface to one unite surface

in the attachment bellow , there's a  poly surface imported to rhino from somewhere , i introduce to grasshopper , i want to apply a little bit  smoothness on it(like relax modifier in 3ds max , i tried weaver bird but it's exaggerating in smoothing) and then i want to divide the results into a segments that consider the geometry lines  ,

i tried lunch box and paneling tool , but the problem was always that they panel each face - surface Separately not in a cohesive method cause the are poly surfaces, how to turn this poly surfaces into one unite cohesive surfaces . ..

i would appreciate any help ..thank you so much 

regards