Sectional pile foundation press-in device for peat soil soft foundation

By using a segmented pile system, a combined pile driving mechanism, and an intelligent control system, the stability and efficiency issues of pile foundation construction on peat soil soft foundations have been solved, achieving efficient and stable pile foundation construction results.

CN121047262APending Publication Date: 2025-12-02YUNNAN AGRICULTURAL UNIVERSITY
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Patent Information

Application Number
CN202511447181.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-11
Publication Date
2025-12-02

AI Technical Summary

Technical Problem

When constructing engineering projects on peat soil soft foundations, traditional pile foundation construction is difficult, the pre-loading drainage method has a long cycle, composite foundations are costly, and negative skin friction is significant. The existing split-type pile driver has insufficient structural design and is difficult to adapt to the high compressibility and excess pore water pressure of peat soil, resulting in poor pile foundation stability.

Method used

The system employs a segmented pile system, a combined pile driving mechanism, a hydraulic drive system, and an intelligent control system. It reduces soil disturbance by combining static pressure and vibration, enhances pile end bearing capacity by utilizing end extension mechanisms, and reduces negative skin friction through real-time monitoring and feedback control.

Benefits of technology

This improved construction efficiency, reduced negative skin friction, minimized post-construction settlement, and ensured the stability and construction quality of the pile foundation.

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Abstract

The invention provides a peat soil soft foundation sectional type pile foundation pressing-in device. The device core is composed of a sectional type pile body system, a combined pile pressing mechanism, a hydraulic driving system and an intelligent control system. The sectional type pile body system is formed by splicing a plurality of prefabricated pile sections through a bidirectional interlocking structure, the pile bodies are covered with antifriction jackets, and the lower pile section is provided with a hydraulically-driven end expansion mechanism. The combined pile pressing mechanism integrates a static pressure module and a vibration module, and pile pressing modes can be switched according to soil resistance; the intelligent control system monitors parameters such as pile pressing force and pile body inclination in real time through the sensor set and automatically regulates and controls construction parameters. The drilling-pressing-discharging integrated design is adopted, peat soil soft foundation pre-pressing compaction and deep drainage are synchronously completed during pile pressing, the problems that a traditional treatment method is long in construction period, low in efficiency, large in negative friction resistance, insufficient in pile end bearing capacity and the like are solved, the construction efficiency and the engineering quality are improved, and the construction cost is reduced. The method is suitable for deep peat soil foundation treatment of expressways, dike projects and the like.
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