I had found it at Youtube 🙁
I didn’t want to find it.
How terrible that I was in the upper floor of this building that day !
If I had seen it just after the earthquake, my body would have been trembling.
I found many people have taken notice of this joining segment (vibration control device) .
I found some videos at Youtube.
Judging from these videos so far,if seismic intensity 7 earthquake occur, it seems that joining segment must be taken in a pincer movement by buildings.