Fantasy novelist J.M.McDermott, author of Last Dragon, has blogged at length about what he calls the "mosaic novel". This is a term for novels which are made up of fragments as opposed to straightforward linear narrative. He cites and analyses many examples, one of which is Bradbury's The Martian Chronicles. Chronicles' structure emerges partly from its publishing history: originally composes as narratively unrelated short stories, and only later pasted together to make a novel.
McDermott's article is in four parts, and because it's in his blog it might be difficult to locate all the parts, so here are direct links to the sections:
Part 1 - Part 2 - Part 3 - Part 4 - References