House foundation type
To a large extent, the stability of a house depends on whether the foundation is suitable and strong. Common types of foundations: independent foundation, strip foundation, well foundation, raft foundation and pile foundation. Next, we will discuss their advantages and disadvantages with respect to several foundation types. What are the reinforcement methods for general house foundations? ?
1. Common types of foundations
1. Independent foundation
Advantages: relatively economical, no piling, simple construction, suitable for large independent columns in high-rise buildings.
Disadvantages: The upper gravity is directly carried by the soil through transmission, the stability is not good, and it is not suitable for self-built houses.
2. Strip foundation
Advantages: Economical, no flexural deformation, also known as rigid foundation.
Disadvantages: It is not conducive to the integrity of the foundation, and it is easy to cause wall cracking. It is not suitable for buildings with many floors and high floor heights.
3. Well foundation
Advantages: It can prevent uneven settlement between columns, has strong bearing capacity and high cost performance.
Disadvantages: It is not suitable for buildings with many floors and large superstructure loads.
4. Raft foundation
Advantages: It can avoid local weak parts of the foundation and evenly distribute all the loads of the house. such as paddy fields. Mud ground can consider this foundation.
Disadvantages: high cost, low cost performance, less use of self-built houses in rural areas.
5. Pile foundation
Advantages: strong bearing capacity, good seismic effect, generally used in high-rise buildings.
Disadvantages: labor-intensive and waste materials, the utilization rate of rural construction is relatively low.
Therefore, such foundations are often found in coastal areas or mountainous areas. However, when we choose this kind of foundation, remember to make a strip or raft foundation on it.
Second, the house foundation reinforcement method
1. Compaction method
That is, the compactor reinforces the foundation, and continuously uses an air hammer or a heavy-duty road roller to compact the soil layer on the original foundation, so as to artificially increase the soil density until it reaches the bearing capacity standard of self-built houses.
2. Soil replacement method
That is to say, the loose soil on the house base is artificially replaced, and some materials suitable for the foundation and high density are used for backfilling. Generally speaking, the cost of this method is relatively high.
3. Pile driving method
That is, the piles are embedded in the relatively soft soil layer, and the relatively thick reinforced concrete column piles are generally used to increase the stability of the foundation. This method is simple to operate, but the bearing capacity is limited. This method is mostly used for small buildings. Too big will not work.
