Diaphragm Wall

A diaphragm wall is a commonly used structural system in foundation reinforcement and underground engineering. It usually consists of a deep foundation pit enclosure structure and a groundwater control structure for supporting the surrounding soil and preventing groundwater seepage. Underground diaphragm wall can be divided into reinforced concrete diaphragm wall, steel sheet pile diaphragm wall, rubber water retaining plate diaphragm wall and other types, according to the actual needs of the project to choose different types of diaphragm wall.

Operating steps of diaphragm wall

1. Ground preparation: clean up debris and garbage on the construction site, level the ground, and ensure that the construction area is clean and tidy.

2. Pit excavation: excavate the pit according to the design requirements, the depth and size of the pit need to meet the design requirements.

3. Pit support: set up support structures around the pit, such as steel support, concrete support, etc., to ensure the stability of the pit.

4. Diaphragm wall construction: according to the design requirements, excavate a certain depth of trench in the foundation pit, and then pour concrete in the trench until it reaches the design height.

5. Diaphragm wall reinforcement: reinforcement materials such as steel bars and steel plates are set inside the diaphragm wall to enhance the bearing capacity and stability of the diaphragm wall.

6. Installation of water retaining plate: According to the design requirements, rubber water retaining plate and other materials are installed inside the diaphragm wall to prevent groundwater leakage.

7. Treatment of the top of diaphragm wall: beams, plates and other structures are installed at the top of the diaphragm wall to ensure the overall stability and bearing capacity of the diaphragm wall.

8. Backfilling of pit: backfilling on the outside of diaphragm wall until it reaches the design height.

Advantages of diaphragm wall

1. Strong bearing capacity: the structure of diaphragm wall is reasonably designed to withstand large external loads.

2. Good stability: the support structure and reinforcement materials of diaphragm wall can ensure its stability, and it is not easy to deformation and collapse.

3. Good waterproofing effect: waterproof boards and other materials are set inside the diaphragm wall, which can effectively prevent the leakage of underground water.

4. Short construction period: the construction process of diaphragm wall is simple and the construction period is short, which can save time and cost.

Application of diaphragm wall

Diaphragm wall is widely used in underground engineering and foundation engineering, such as underground garage, underground shopping malls, underground passages, subway tunnels and so on. In these projects, the diaphragm wall can play a role in supporting the soil, controlling groundwater, preventing ground collapse, etc. to ensure the safety and stability of the project.