Schlitzwandgründungen

Schlitzwandgründungen, also known as diaphragm wall foundations, are a type of deep foundation system used in civil engineering. They are constructed by excavating a trench or "slurry trench" in the ground, typically using a bentonite slurry to support the excavation walls and prevent collapse. Reinforcement cages are then lowered into the trench, and concrete is poured into the excavation, displacing the slurry and forming a continuous, load-bearing wall element. This process creates a rigid, monolithic structure that can extend deep into the soil.

The primary advantage of Schlitzwandgründungen is their ability to resist significant lateral loads, making them suitable for retaining walls, deep basements, and structures in areas with high groundwater pressure. They are also effective for preventing soil settlement and can be used to create impermeable barriers, which is beneficial for groundwater control. The construction process is relatively quiet and can be performed with minimal vibration compared to some other deep foundation methods.

Schlitzwandgründungen are typically installed in stable soil conditions, although special techniques can be employed for more challenging ground. The construction method involves specialized equipment for excavation and concrete placement. The depth and dimensions of the diaphragm wall are determined by the structural requirements and the geotechnical conditions of the site. After the concrete has cured, the top portion of the wall can be incorporated into the superstructure as a foundation element or retaining structure.