What are the causes of ground subsidence?

1. Excessive self-weight of the building

The foundation is designed to bear the weight of buildings, with a limited load-bearing capacity. It is typically constructed based on the designed weight of the building. If the calculations are insufficient and the foundation's load-bearing capacity is exceeded, it can lead to foundation settlement.

2. The elastic modulus of the subsoil is relatively low.

Improper foundation construction, such as insufficient soil elastic modulus, can lead to noticeable settlement.

3. There is a soft underlying layer beneath the foundation soil.

If the soil beneath the foundation is loose, over time, gravity will cause the foundation to slowly sink, leading to localized or overall subsidence.

4. Foundation Damage

If two buildings are too close together, the foundations will be subjected to squeezing due to stress diffusion, which will inevitably lead to sinking.

5. Groundwater level decline

Groundwater is under pressure; excessive extraction can cause it to lose pressure, leading to ground subsidence.