Will prefabricated panels suddenly break?

Recently, there is quite sad news, that is, a hotel building collapsed in Quanzhou, Fujian Province. So far, 68 people have been trapped and many others have died. , and the cause of the collapse is also under investigation. There may be problems with the structure of the house. When we build houses, we need to use prefabricated panels. Many people have questions, will prefabricated panels suddenly break? Today I will tell you about it.

1. Will the prefabricated panels break suddenly?

In fact, don’t worry, the prefabricated panels will not break suddenly, mainly because there are steel bars inside the prefabricated panels, and the steel bars can withstand Force still has a certain effect. Even if it breaks, it will not collapse all at once. It will break slowly, and you will see some cracks on the surface, and then slowly expand. In other words, this kind of damage does not happen suddenly, but will slowly collapse over time.

2. What is the load-bearing capacity of prefabricated panels?

1. Prefabricated panels have different grades, such as first grade and second grade. The load-bearing capacity of the first-level prefabricated panels is approximately 1 kn per square meter, while the load-bearing capacity of the second-level prefabricated panels is slightly larger, at 2 kn per square meter.

2. Prefabricated panels are mainly composed of steel bars and cement when pouring, and are generally placed on the beams of the house. When pouring the house, the steel bars need to be laid first, and then the cement is poured, so there is a certain bearing capacity.

3. If you choose a cast-in-place slab, its load-bearing capacity will be slightly better, the quality of the house will be better, the endurance will be stronger, and it will also have good earthquake resistance. However, relatively speaking, the cost is relatively large. The load-bearing capacity of prefabricated panels is relatively smaller, and the structure is lighter. However, assembly is more convenient and can improve construction efficiency.

3. Service life of prefabricated panels

According to the design requirements of prefabricated panels, generally speaking, the service life can reach 50 years. We all know that the service life of commercial housing is 70 years. If prefabricated panels are used to build commercial housing, they may be retired after 50 years, which has exceeded the service life.

Editor’s summary: We can understand that the service life of prefabricated panels is only 30 to 50 years. In the event of collapse, they will not suddenly break, so this is reassuring. Yes, but we still have to consider its quality when pouring prefabricated panels.