When foundation soil is subjected to changes in superstructure loads, or when the bearing capacity of the foundation of a new project cannot meet design requirements, the foundation must be reinforced. There are many foundation reinforcement methods. Our company also undertakes foundation reinforcement construction, mainly performing anchor rod static pressure pile and compaction grouting construction.
The anchor rod static pressure pile is a method that uses the dead weight of a structure or building, transmitting the reaction force of pile pressing through reserved anchor rods or cast-in-place anchor rods via a pile pressing frame into the foundation, thereby improving or enhancing the bearing capacity of the building foundation.
Compared with pile driving, static pressure pile engineering has the advantages of no noise, no pollution, and a small construction impact area. The anchor rod static pressure pile also utilizes the structure's dead weight, which can save construction time, occupies a small construction area, and can be constructed inside existing buildings to achieve reinforcement and deviation correction.
This technology is mainly used in foundation treatment and deviation correction projects. It can be constructed in locations inaccessible to general large-scale pile pressing machinery, and has high application value especially in the renovation and expansion of existing factory buildings.
A Beijing building reinforcement company explains the uses of foundation anchor rod static pressure pile reinforcement: The anchor rod static pressure pile is a construction method formed by combining post-installed anchor rods with static pressure pile driving. That is, first, pile pressing holes and anchor rod holes are drilled in the building, anchor rods are planted with structural adhesive, then a reaction frame is installed, the building's dead weight is used as reaction force, and a jack presses steel piles or precast piles segment by segment into the soil. After the pile pressing force and pressing depth meet design requirements, the piles are connected to the foundation to improve the foundation bearing capacity and control building settlement. It has the following advantages:
1. It can quickly stop settlement and tilting, and will not cause additional settlement during construction.
2. Pile pressing construction can be carried out in narrow spaces, suitable for projects where large machinery cannot enter.
3. It can perform underpinning engineering for settled and cracked buildings without stopping production in workshops or relocating residents.
4. The load transfer process and mechanical performance are clear, the actual bearing capacity of each pile can be obtained, and construction quality is reliable.
Process flow:
Process flow: Positioning =》 Drilling pile pressing holes and anchor holes =》 Planting anchor rods =》 Fixing the pile pressing frame and jack =》 Pile pressing =》 After meeting design requirements, cast integrally with the original foundation.
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