HomeSandless pressurized vacuum preloading
Release time：Apr 21,2023
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Sandless pressurized vacuum preloading
The pressurized vacuum preloading process is based on ordinary vacuum preloading. When vacuum pumping cannot further improve the consolidation degree of the soil, horizontal pressure is applied to the soil through a pressurized pipe, causing pore water to move towards the drainage plate, further improving the consolidation degree of the soil.
The pressurized vacuum preloading process is based on ordinary vacuum preloading. When vacuum pumping cannot further improve the consolidation degree of the soil, horizontal pressure is applied to the soil through a pressurized pipe, causing pore water to move towards the drainage plate, further improving the consolidation degree of the soil.
Insert anti clogging plastic drainage plates into the pre-treatment foundation, connect two drainage plates using a hand joint, and connect the hand joint with a spiral steel wire hose to form a vacuum branch pipeline. The vacuum branch pipeline is collected to the corresponding vacuum main pipeline through a variable diameter cross, forming a vacuum pipeline network under the membrane; Insert a booster pipe at the designated position, connect each booster pipe with a spiral steel wire hose and a small tee to form a booster pipe network. When the surface soil reaches a certain degree of consolidation in the middle and later stages of vacuum pumping, start the booster construction. Use compressed gas to disturb the soil within a certain depth range, break the relative equilibrium state of the soil during vacuum pumping, and create micro cracks in the soil, causing water molecules in the soil to flow in a directional manner, accelerating soil consolidation, Improve soil strength.
Key technical points of sand free pressurized vacuum preloading
Integrated anti siltation and drainage board technology
The plastic drainage board adopts an integral anti clogging plastic drainage board, which has the characteristics of good integrity, high resistance strength, and large filter membrane aperture, reducing well resistance effect, achieving the goal of optimal mud water separation, and effectively overcoming the blockage caused by sediment passing through the filter membrane.
Direct connection technology without sand layer
Connect the plastic drainage plate to the vacuum pipe through a hand joint, shortening the vacuum transmission path and allowing the vacuum degree to reach the interior of the soil directly. The drainage board is directly connected with the energy-saving pump with large pumping capacity, which shortens the drainage path, improves the drainage efficiency, and eliminates the need for sand cushion materials, saving the high cost of sand cushion, which is conducive to control engineering cost.
Pressurized consolidation technology
By using microporous pressure boosting technology, a pressure boosting tube is uniformly set up in the soil to further promote the directional movement of soil pore water under pressure, and to quickly consolidate the soft foundation without the need for additional loading. The bearing capacity of the treated foundation can reach 80-120kPa, and the post construction settlement is less than 20cm. Within the limited construction period, the foundation strength is greatly improved, and the post construction settlement is reduced. It has the advantages of good quality and effect, advanced construction technology, shortened construction period, environmental protection and energy conservation, and reduced cost.
Water gas separation technology
By connecting an energy-saving vacuum pump to a large water vapor separation tank instead of a jet vacuum pump, the principle of vacuum negative pressure can be changed, which can achieve the goal of energy conservation and overcome the disadvantage of small jet vacuum pumps treating shallow foundation soil depth.
Sunzo Foundation Engineering Co., Ltd. covers the fields of soft foundation treatment engineering, land and water foundation treatment, pile foundation engineering, and reclamation and greening engineering. It is a technology-based enterprise that provides customers with comprehensive solutions such as land and water foundation engineering technical consultation, design, and construction services.
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