Deep Equipment Foundation Lifting with Targeted Grouting Support
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Solution Overview
Problem
Existing methods for lifting deep plant equipment foundations are material-intensive and inefficient, leading to waste and instability in foundation settlement and deviation.
Innovation Solution
A method involving determining a foundation pressure diffusion angle based on soil modulus ratios, performing grouting reinforcement within specific ranges, and constructing irregular composite foundation supporting bodies to evenly distribute load and provide stable support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional grouting reinforcement methods are used for deep foundation lifting, then foundation stability can be improved, but material consumption increases significantly
Solution Approach 1:
The patent applies local quality by determining a precise grouting range based on the diffusion angle of foundation pressure. Instead of grouting the entire deep foundation area, the method identifies specific zones where grouting is most needed (within the diffusion angle range) and concentrates materials there, thereby reducing overall material consumption while maintaining foundation stability.
Solution Approach 2:
The patent utilizes parameter changes by calculating the foundation pressure diffusion angle based on soil compression modulus ratios (ES1/ES2) and depth-to-width ratios (Z/b). These parameter changes allow for dynamic determination of grouting ranges, optimizing material usage according to actual soil conditions and foundation requirements.
2Reliability
If extensive grouting is performed for deep reinforcement, then foundation settlement stability improves, but construction cost increases
Solution Approach 1:
The patent applies partial action by performing grouting reinforcement only within the calculated diffusion angle range rather than throughout the entire deep foundation. This partial grouting approach provides sufficient reinforcement for settlement stability while avoiding excessive material consumption and associated costs.
3Ease of operation
If traditional lifting methods are used for deep foundations, then lifting capability is achieved, but material waste occurs
Solution Approach 1:
The patent applies preliminary action by pre-calculating the foundation pressure diffusion angle and determining the optimal grouting range before executing the lifting operation. This preliminary planning ensures that grouting materials are applied only where needed for lifting and reinforcement, preventing material waste while maintaining lifting capability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method significantly reduces material usage while ensuring permanent settlement stability and deviation rectification by forming stable, intersecting reinforcement bodies that evenly transmit forces, enhancing support and reducing disturbances.
Implementation Method 1
determining a foundation pressure diffusion angle according to a ratio of the compression modulus of a bearing stratum to the compression modulus of a soft underlying stratum, namely ES1/ES2
Data Source
AI summary
The present application relates to a lifting and resetting method for sinking of a deep plant equipment foundation, and belongs to the technical field of anti-settlement and deviation rectification of foundations. The lifting and resetting method includes: determining a foundation pressure diffusion angle; determining a diffusion range of a load; performing grouting reinforcement on an unstable soil body in the soft underlying stratum; performing grouting reinforcement on a bearing stratum; performing grouting, reinforcing and lifting within a middle range of the bearing stratum; and constructing irregular composite foundation supporting bodies at the bottom of the soft underlying stratum. The lifting and resetting method of the present application can ensure a deviation rectification effect.