An anti-freeze pullout device and its construction method

Abstract

An anti-freezing and pulling device and a construction method thereof, the device includes a chassis, a screw rod, a thrust bearing, a hexagonal nut, a push pin plate, a chain rod, and the chain rod is an iron chain rod, which is hinged between the stress point of the nut and the On the stress point of the push pin plate. The docking rod is an iron rod, which is docked on the upper part of the screw rod through a mortise and tenon structure. Inserting rod, the inserting rod is an iron rod, which is inserted into the reserved circular hole on the top of the docking rod as a moment arm for rotating the screw rod. All parts of the device can be prefabricated, and can be quickly assembled on site. All parts of the device can be prefabricated, and can be quickly assembled on site. The construction method uses a gasoline jackhammer to pre-drill the hole, and the device is put into the hole as a whole, and the thrust of the needle plate on the top plate is generated by the helix of the screw rod, so that the push needle plate penetrates into the soil on the side wall of the hole. The invention greatly reduces the construction difficulty of anti-freezing and pulling out measures, shortens the construction period, reduces the comprehensive construction cost, and increases the anti-pullout capacity of the foundation.

Description

technical field

[0001] The invention belongs to the field of civil construction, and in particular relates to an anti-freezing and pulling out device and a construction method thereof. Background technique

[0002] In permafrost regions and seasonally frozen regions in Northeast China, serious freeze-and-pull damages will occur after experiencing freeze-thaw cycles every year. The foundations of some power poles have insufficient pull-out resistance, resulting in serious tilting and even collapse of the poles. It takes a lot of manpower and material resources to straighten and strengthen the pole, and the annual maintenance cost is relatively high. In response to this phenomenon, if reasonable anti-freezing and pulling measures are chosen, the freezing and pulling damage of the utility pole can be greatly reduced. For the improvement of the freezing and pulling damage of the utility pole, it is necessary to start in the direction of the freezing and pulling resistance of the...

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