6results about How to "Accelerated consolidation" patented technology

The present application relates to soft ground treatment technical field, specifically to a kind of based on non-uniform soft foundation pressurized vacuum preloading device and layout method, preloading device includes: pressurized pipe body, can be connected in series;Connecting pipe body is spaced in the pressurized pipe body, side wall and the side wall of pressurized pipe body are enclosed into pressurized cavity, and the side wall of pressurized cavity is provided with multiple exhaust holes;Pressure regulating mechanism is connected between the inner cavity of connecting pipe body and pressurized cavity, and the size of the on-off and effective communication area of communication passage between the inner cavity of connecting pipe body and pressurized cavity can be adjusted;Wherein, in the case where two pressurized pipe bodies are connected, corresponding two connecting pipe bodies are connected, can be according to the permeability coefficient and consolidation characteristics of different depth soil layer, specifically adjust pressurized pressure, to improve reinforcement effect, improve construction efficiency.The preloading method is based on the preloading device described above.

The utility model discloses a highway subgrade gravel pile which comprises a foundation, a gravel pile body, a grouting mechanism and a drainage mechanism. After a plurality of mounting holes are formed in the foundation, gravel is filled into the mounting holes to form a gravel pile main body; the grouting mechanism comprises a grouting pipe and grouting holes, and after the grouting pipe is located in the center of the mounting hole, the grouting holes are evenly formed in the wall body and used for injecting cement paste reinforcing materials in the later period; and the drainage mechanisms are arranged between the adjacent groups of gravel pile main bodies and are used for accelerating drainage of water in the foundation. Compared with the prior art, the gravel pile has the advantages that high-quality gravel is adopted as a filling material, good drainage performance and high strength are ensured, and the reinforced nets are arranged at the top and the bottom of the gravel pile body, so that the tensile strength and the stability of the whole structure are improved; the vertical drainage plates are arranged between the adjacent gravel pile bodies, drainage of water in a foundation is accelerated, pore water pressure is reduced, and the consolidation process is accelerated.

The invention discloses a construction method for consolidating silt soft soil through combination of underground consolidation constraint pressurization and vacuum preloading. The construction method comprises the steps that an underground constraint structure composed of a shallow consolidated soil layer and a peripheral sealed consolidated wall is formed in a soft soil area to be consolidated; a drainage channel and a plurality of pressurization air bags are arranged in the soft soil in the constraint structure, and the pressurization air bags are connected with ground pressurization equipment through pressurization pipelines; laying a sealing and covering system on the surface of the site, and connecting the sealing and covering system with the drainage channel for vacuum preloading; in or after the vacuum preloading process, gas pressure is actively applied to the interior of the pressurizing air bag through the ground pressurizing equipment, so that the air bag is expanded, and an additional load is applied to surrounding soft soil; and after pressurization and vacuum preloading are stopped, solidification slurry is poured into the pressurization air bag through a pressurization pipeline, so that the pressurization air bag forms a permanent reinforcement body in the soft soil. The effective consolidation stress acting on the soft soil is improved, so that drainage is accelerated, and the deep reinforcement effect and the final foundation bearing capacity are improved.

The invention discloses a construction method for reinforcing a soft soil foundation by combining an electroosmosis vacuum preloading method with a cement mixing pile, which belongs to the technical field of building construction and comprises the following steps: S1, foundation pretreatment and survey lofting: leveling and cleaning a soft soil foundation site to be treated, and then performing survey lofting according to a design drawing, the inserting position of the electro-osmosis drainage plate and the pile position of the cement mixing pile are calibrated; s2, shallow layer electro-osmosis vacuum preloading method construction is conducted, specifically, a plurality of electro-osmosis drainage plates are inserted in a shallow layer foundation area according to the designed interval and arrangement form; connecting the inserted electroosmosis drainage plates to a polarity-switchable direct-current power supply system through wires, and electrifying according to a preset program so as to form electroosmosis flow in the soil body; meanwhile, the electroosmosis drainage plate is connected with a vacuum pump system through a water collecting pipe, negative pressure is formed under the sealing film laid on the earth surface, and vacuum preloading is carried out; through the combined effect of electroosmosis and vacuum preloading, drainage consolidation of shallow soft soil is accelerated, and a solidified hard shell layer is formed on the earth surface.

The invention is used for the technical field of geotechnical engineering anchoring, and discloses a single-wedge-shaped grouting-free anchor cable which comprises a triangular wedge-shaped block and a soil body, a guide cone is fixedly installed at one end of the triangular wedge-shaped block, and a positioning connecting rod is installed at the end, located in the triangular wedge-shaped block, of a connector in a threaded mode. According to the single-wedge-shaped grouting-free anchor cable, a guide cone, a triangular wedge-shaped block and a square pipe can be driven into a preset depth of a side slope at a proper angle through connection of a pile driver and a positioning connecting rod, then a steel strand is pulled to drive a U-shaped ring and the triangular wedge-shaped block to move and is supported through the positioning connecting rod, and meanwhile the whole device slightly moves together; the inclined design of the triangular wedge-shaped block is matched, so that the triangular wedge-shaped block can easily deform in the side slope, radial expansion is formed, mechanical self-anchoring is formed through tension deformation, grouting is not needed, environmental pollution and construction cost and complexity are reduced, and the efficiency and speed of setting the anchor rod are greatly improved.

The utility model provides a preloading soft foundation treatment structure which is arranged on a soft foundation, a cofferdam is arranged on the soft foundation, and the preloading soft foundation treatment structure comprises a sand cushion layer, a heat conducting plate, a preloading layer, a drainage conveying mechanism and a water storage heating mechanism. The sand cushion layer is laid on the soft foundation and located in the cofferdam. The heat conducting plate is arranged on the sand cushion layer and is provided with a heat conducting pipeline; the stacking layer is arranged on the heat conducting plate; the drainage conveying mechanism comprises a water collecting pipe, a main drainage pipe and a water suction pump, the water collecting pipe is inserted into the soft foundation and communicates with the main drainage pipe, water seepage holes are formed in the water collecting pipe, and the main drainage pipe communicates with the water suction pump; the water storage heating mechanism comprises a water storage tank, a heating device and a drainage pump, the water storage tank is arranged on the stacking layer and communicated with the water suction pump, the heating device is used for heating water in the water storage tank, the water storage tank and the heat conduction pipeline form a circulation loop, and the drainage pump is used for driving the water in the water storage tank to flow in the circulation loop.