If you're interested in outdoor over-wintering methods using double-walled structures with insulation in-between (which is what the OP was enquiring about), then there are several sources of well-proven techniques.
One is the classic Danish/Swedish Trogbeute hive, another is the use of Over-Wintering Cases by Karl Killion (Honey in The Comb, 1951), the triple winter-cases of Charles Dadant (System of Beekeeping, 1920) and 'The Preparation of Bees for Outdoor Wintering', E.F.Phillips (Farmers Bulletin 1012 rev 1922), which can be sourced via the Internet Archive. The Phillips document is particularly good, and covers single, double, and quad hive set-ups.
On a personal note, I am very much in favour of deep framed hives - during the last few years I've been running several with 12" deep frames, and I'm currently trialling one hive with 14" deep frames (in the style of Charles Dadant), with excellent results thus far. My over-wintering success rate (>50 hives) has been 100% for the last 5 years.