The floor slab (the original flat roof panel) is a cheap local solid non-prestressed precast slab or a thin cast-in-place slab. The diameter of reinforcement in the floor is too small and the reinforcement is obviously insufficient.
2. A few years ago, the hotel expanded its scale, and the first floor was built with a steel structure, and the first floor was transformed into the second floor, where people could go. The self-weight load and household facilities load of the two-story steel structure residence increased obviously.
Extended data:
At the time of the incident, the hotel was holding a party and more than 50 people gathered for dinner. Some people are on the first floor, others are on the second floor. There are too many people on the second floor, the local load of the floor is too large, and the strength of the floor itself is insufficient, which leads to local cracking and collapse of the floor, resulting in a large area collapse of the floor. Most people on the second floor were slightly injured, and people on the first floor were hit by the collapsed concrete floor, causing heavy casualties.
As can be seen from the site photos, the precast floor slab is relatively thin, the floor slab reinforcement is very thin, and the floor slab is broken into small pieces. Mr. Qi, a villager at the scene, said that the hotel has been open for more than ten years. A few years ago, the color steel room was built on the first floor of Juxian Hotel, and the color steel room on the second floor was built later. From the outside of the hotel, you can see that the color steel roof with a width of more than 10 meter has been tilted by about 45 degrees! The situation at that time was more serious.
People's Daily Online-The Emergency Management Department and the Ministry of Housing and Urban-Rural Development of Linfen Hotel in Shanxi sent a working group to rush.