Vacuum Preloading with Geomembrane Bag Loading for Foundation Consolidation
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Solution Overview
Problem
Conventional vacuum preloading methods for foundation consolidation are inefficient, leading to poor drainage, low bearing capacity, and increased risk of engineering accidents, especially in tideland reclamation projects where mud has high water content and low strength.
Innovation Solution
A method combining vacuum preloading with geomembrane bag assembly loading, where geomembrane bags filled with mud are placed above the slurry pit, enhancing drainage and consolidation by utilizing both vacuum suction and loading pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional vacuum preloading method is used, then foundation consolidation is achieved, but drainage speed is slow and construction time is extended
Solution Approach 1:
The patent combines vacuum preloading method with geomembrane bag assembly loading method into an integrated foundation consolidation system. The vacuum preloading system creates negative pressure for drainage while the geomembrane bag assemblies provide controlled loading and confinement, working simultaneously to accelerate both drainage and consolidation processes.
Solution Approach 2:
The patent implements preliminary action by pre-installing the geomembrane bag assemblies and drainage systems before final loading. The vacuum preloading system is activated early to establish drainage pathways, and the geomembrane bags are positioned in advance to provide immediate confinement and loading pressure when the soft soil is enclosed.
2Strength
If conventional vacuum preloading method is used, then foundation consolidation is achieved, but bearing capacity is insufficient
Solution Approach 1:
The patent merges vacuum preloading with geomembrane bag assembly loading to simultaneously achieve drainage and enhanced bearing capacity. The geomembrane bags provide confining pressure and load distribution while the vacuum system removes pore water, creating a more reliable foundation with higher bearing capacity than vacuum preloading alone.
Solution Approach 2:
The patent employs composite construction using geomembrane bags (high-strength geotextile material) combined with vacuum preloading systems. This composite approach leverages the strength and confinement properties of the geomembrane material alongside the drainage effectiveness of vacuum preloading to achieve superior foundation strength and bearing capacity.
3Productivity
If geomembrane bag stacking method is used, then drainage is achieved through natural settlement, but dehydration speed is insufficient and time cost increases
Solution Approach 1:
The patent merges geomembrane bag stacking with vacuum preloading to transform the passive natural settlement drainage process into an active accelerated dehydration process. The vacuum system creates negative pressure that actively draws water through the geomembrane bags, dramatically increasing dehydration speed compared to gravity-based natural settlement alone.
4Stability of the object's composition
If conventional vacuum preloading with slag loading is used, then foundation consolidation is achieved, but uneven settlement occurs and engineering complexity increases
Solution Approach 1:
The patent uses disposable geomembrane bag assemblies that can be easily installed and removed, replacing complex and difficult-to-manage slag loading systems. The geomembrane bags provide uniform loading and confinement without the engineering complexity of slag handling, and can be disposed of after use without requiring complex removal or stabilization procedures.
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 improves drainage speed, increases the degree of consolidation, reduces construction time and costs, and mitigates the risk of engineering accidents by stabilizing the soil foundation effectively.
Implementation Method 1
conducting vacuum preloading pump drainage for several times
Implementation Method 2
vacuum preloading pump drainage
Implementation Method 3
geomembrane bag assembly loading, where geomembrane bags filled with mud are placed above the slurry pit, enhancing drainage and consolidation by utilizing both vacuum suction and loading pressure
Implementation Method 4
improves drainage speed, increases the degree of consolidation
Data Source
AI summary
A method for foundation consolidation combining vacuum preloading and geomembrane bag assembly loading, which comprises: digging a slurry pit, filling mud into the slurry pit and conducting vacuum preloading pumpdrainage for multiple times, laying the geomembrane bag assemblies above the soft slurry seam processed through vacuum preloading pumpdrainage inside the slurry pit to form a plurality of loading layers, and laying the geomembrane bag assemblies by piling geomembrane bags. In view of the engineering complexity and uneven settlement resulting from conventional vacuum preloading using slag loading, geomembrane bag for loading to overcome the adverse effects of slag loading. In the present invention, the drainage system and the geomembrane bag assemblies are laid out to fully leverage their perspective properties, so as to improve the transmission of vacuity in the whole soil mass, speed up the drainage rate, and increase the degree of consolidation.