metal earthquake straps that were poured into the concrete and attached to the frame of the house.
PZ: another strategy is to build a strong house and insulate it from the shaking earth by having it float on anti friction pads. many houses were left intact by the quake in Japan, only to be carried out to see in one piece.
metal straps are great on all joints in a wooden house. wood splits and nails pull out.
a good way to be save afterward is to have a camping vehicle stocked with goodies at the ready, it is already on roller bearings.