There is no way for the existing prefab houses to meet the seismic requirement. They are bound to have poor seismic performance due to the characteristic of their main components prefabricated plates. But this is not an issue that needs to be considered particularly in areas where the building seismic rating is not high. There are also some tips to help reinforcing the prefab house just in case you are worried about this unduly .
So, how should we reinforce the prefab house?
Here are three main methods:
1、Reinforce the stainless steel angle bar and beams
2、Use polymer mortar technique in the steel wire mesh
3、Reform the cast-in-place slab
Two specific ways to reinforce the prefab house:
1. In the vertical direction:
Adding R.C. columns ( 240·300, the diameter is 12-16, stirrup is 6@200 ) to each span of the outer wall. Adding a proper number of columns on the both sides of the gable and considering placing beams in each direction of the corner post.
2. In horizontal direction:
Laying R.C. beams to connect with the corner columns at both sides of outer walls, and tighten them with rebars. You can use the bolts to tighten them up or pass a steel plate through the columns and welding them. It is also useful to add beams on the roof, but remember to make holes to allow for drainage. This is Beijing's seismic reinforcement measures after the Tangshan earthquake. Even the old office building of Beijing architectural design institute is reinforced in this way. You can still see these buildings even now it's been 30 years
If the earthquake really happens, there are two best hiding places for you: the bathroom and kitchen. On the one hand, both of these two places are made of cast-in-place structures due to the waterproofing requirements. The natural strong structural rigidity of small spaces also ensures that they are not easy to be damaged. On the other hand, both the bathroom and kitchen have a certain amount of water, you can even find some food in the kitchen. This environment will help to provide a necessary condition for survival when people are buried after the earthquake.
We are a professional prefab house supplier, and can ensure the safety and high quality of our products.