Engineering Characteristics And Treatment Methods of Soft Soil Foundation

In civil engineering construction, soft soil foundations often bring many difficulties to construction due to their special physical and mechanical properties. Understanding the engineering characteristics of soft soil foundations and mastering effective treatment methods are of vital importance for ensuring the quality and safety of the project. The following is a detailed introduction to the relevant knowledge of soft soil foundation and its treatment methods for everyone.

1. High compressibility: The porosity ratio of soft soil foundation is large, and the voids between particles are filled with moisture. Under the action of loads, soil is extremely prone to compression, resulting in a large settlement of the foundation, which can easily cause uneven settlement of buildings and affect the safety and normal use of the structure.

2. Low strength: Soft soil has low shear strength, small internal friction angles and cohesion. After being loaded, the soil is prone to shear failure and is difficult to bear large loads. During construction, the stability of the foundation is poor, which is likely to cause problems such as landslides and collapses.

3. Poor water permeability: The pores of soft soil are tiny, and the resistance to water flow within them is large. Water is difficult to drain, the consolidation speed of soil is slow, and the duration of foundation settlement is long, which increases the construction period and the difficulty of treatment.

4. Significant rheological properties: Under the long-term action of a certain load, soft soil will undergo slow and continuous deformation. Even if the load remains constant, deformation will continue to develop over time, posing a threat to the long-term stability of buildings.

5. Replacement and filling method treatment: Partially or completely remove the soft soil layer and replace it with materials of higher strength and lower compressibility, such as sand, gravel, and lime soil. After replacement and filling, the bearing capacity of the foundation can be enhanced, settlement can be reduced, and a stable foundation can be created for the construction of rotary drilling RIGS.

6. Drainage consolidation method: Set up drainage channels in soft soil foundations, such as sand Wells and plastic drainage boards, to accelerate the discharge of water from the soil and gradually consolidate and harden the soil. The strength of the consolidated foundation is enhanced, making it suitable for subsequent bored pile construction by rotary drilling RIGS.

The special engineering characteristics of soft soil foundations pose challenges to engineering construction. However, through effective treatment methods such as replacement and consolidation, the performance of the foundation can be improved. Mastering these characteristics and processing methods can ensure the smooth operation of construction equipment such as rotary drilling RIGS, guarantee the quality and safety of civil engineering construction, and lay a reliable foundation for all kinds of projects.