The disclosure relates to the construction of a support for above-ground pipelines and can be used for laying pipelines in in permafrost and on slopes. The result of the support is uniform distribution of the load from the pipeline to a bedding cradle, displacement of a movable part in response to predetermined conditions, and prevention of deformation due to soil heaving. The result is achieved due to inclusion of moving and fixed parts. The movable part includes a semi-cylindrical cradle with two semi-annular frames on the outside of the cradle, detachable half-yokes fix the pipe in the cradle, side cheeks welded to the frame and movably fixed to the tower base by a hinged joint, and a base slidably positioned on a stationary surface of the support. The objective is also solved using a support assembly being structurally different than prior art supports, as described herein.

The disclosure relates to the construction of a support for above-ground pipelines and can be used for laying pipelines in in permafrost and on slopes. The result of the support is uniform distribution of the load from the pipeline to a bedding cradle, displacement of a movable part in response to predetermined conditions, and prevention of deformation due to soil heaving. The result is achieved due to inclusion of moving and fixed parts. The movable part includes a semi-cylindrical cradle with two semi-annular frames on the outside of the cradle, detachable half-yokes fix the pipe in the cradle, side cheeks welded to the frame and movably fixed to the tower base by a hinged joint, and a base slidably positioned on a stationary surface of the support. The objective is also solved using a support assembly being structurally different than prior art supports, as described herein.

This invention relates to a method for insulating sub-soil comprising mechanically destructuring the sub-soil, injecting an insulating material into the destructured sub-soil, and mixing the sub-soil and the insulating material. The thermal conductivity of the insulating material is strictly lower than the thermal conductivity of the sub-soil.

This invention relates to a method for insulating sub-soil comprising mechanically destructuring the sub-soil, injecting an insulating material into the destructured sub-soil, and mixing the sub-soil and the insulating material. The thermal conductivity of the insulating material is strictly lower than the thermal conductivity of the sub-soil.

The invention provides a method and system for controlling ventilation cooling type permafrost subgrade based on energy dynamic balance, wherein the method comprises the steps of constructing a heat absorption predicting model; and inputting an operating condition combination of a permafrost subgrade into the heat absorption predicting model to produce a predicted heat absorption for the permafrost subgrade, and controlling a cooling system to operate based on the predicted heat absorption. The heat absorption predicting model is constructed based on a seed point algorithm of formula matrix, which comprises the steps of producing a known fitting formula; establishing a formula matrix; and calculating a predictive fitting formula corresponding to a new seed point by known seed points in the formula matrix and an index formula, and then calculating the predicted heat absorption based on the predictive fitting formula.

The invention provides a method and system for controlling ventilation cooling type permafrost subgrade based on energy dynamic balance, wherein the method comprises the steps of constructing a heat absorption predicting model; and inputting an operating condition combination of a permafrost subgrade into the heat absorption predicting model to produce a predicted heat absorption for the permafrost subgrade, and controlling a cooling system to operate based on the predicted heat absorption. The heat absorption predicting model is constructed based on a seed point algorithm of formula matrix, which comprises the steps of producing a known fitting formula; establishing a formula matrix; and calculating a predictive fitting formula corresponding to a new seed point by known seed points in the formula matrix and an index formula, and then calculating the predicted heat absorption based on the predictive fitting formula.

The invention provides a light-concentrating anti-frost anti-heave heat gathering device and subgrade thereof. The device comprises a light concentrator mounted outside a subgrade; and a heat gathering tube comprising a heat absorption section and a heat release section in communication, the heat absorption section is inserted inside the light concentrator for transferring absorbed heat to the heat release section, the heat release section is inserted inside the subgrade for heating the subgrade, the light concentrator is configured to focus sunlight to and heat the heat absorption section. The heat gathering device herein takes advantage of solar energy resources, by smoothly heating the ground temperature field of the subgrade, and regulating the frost-heaving portions of the subgrade, balanced and smooth heating of the subgrade can be achieved and engineering diseases such as frost heave and uneven fluctuation of the subgrade in the seasonally frozen ground region can be effectively avoided.

The invention provides a light-concentrating anti-frost anti-heave heat gathering device and subgrade thereof. The device comprises a light concentrator mounted outside a subgrade; and a heat gathering tube comprising a heat absorption section and a heat release section in communication, the heat absorption section is inserted inside the light concentrator for transferring absorbed heat to the heat release section, the heat release section is inserted inside the subgrade for heating the subgrade, the light concentrator is configured to focus sunlight to and heat the heat absorption section. The heat gathering device herein takes advantage of solar energy resources, by smoothly heating the ground temperature field of the subgrade, and regulating the frost-heaving portions of the subgrade, balanced and smooth heating of the subgrade can be achieved and engineering diseases such as frost heave and uneven fluctuation of the subgrade in the seasonally frozen ground region can be effectively avoided.

Embodiments of the present disclosure provide a frost-heave-resistant pile foundation support device including a pile foundation cylinder, a pile foundation cylinder top seat, a pile foundation cylinder base, and a frost heave penetration mechanism, wherein a top of the pile foundation cylinder is fixedly installed with the pile foundation cylinder top seat, and the pile foundation cylinder top seat is configured to connect to a target to be support; the pile foundation cylinder base is disposed at a bottom of the pile foundation cylinder, and a plurality of threaded drill rod assemblies are provided on the pile foundation cylinder; the frost heave penetration mechanism is fixedly installed on a cylindrical wall of the pile foundation cylinder. When soil undergoes frost heave action, a horizontal anchor rod of the frost heave penetration mechanism can penetrate laterally outward into the soil, so that the pile foundation cylinder is anchored to the surrounding soil, which serves as a frost-heave-resistant effect.

Embodiments of the present disclosure provide a frost-heave-resistant pile foundation support device including a pile foundation cylinder, a pile foundation cylinder top seat, a pile foundation cylinder base, and a frost heave penetration mechanism, wherein a top of the pile foundation cylinder is fixedly installed with the pile foundation cylinder top seat, and the pile foundation cylinder top seat is configured to connect to a target to be support; the pile foundation cylinder base is disposed at a bottom of the pile foundation cylinder, and a plurality of threaded drill rod assemblies are provided on the pile foundation cylinder; the frost heave penetration mechanism is fixedly installed on a cylindrical wall of the pile foundation cylinder. When soil undergoes frost heave action, a horizontal anchor rod of the frost heave penetration mechanism can penetrate laterally outward into the soil, so that the pile foundation cylinder is anchored to the surrounding soil, which serves as a frost-heave-resistant effect.