The bed frame is the structure under your rest, so it is read as the stability beneath your private life. A collapsing frame points to a sense that the foundations of comfort feel shaky.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.