Slope excavating and digging foundation provided with pile anchor

Abstract

The invention discloses a slope excavating and digging foundation provided with a pile anchor. A square column is inserted into a reserved cup mouth of an amplification foot, a gap between the square column and the cup mouth is filled by structural mortar, and a line tower support leg is fixed on the upper end of the square column through a foundation bolt; a cat anchor penetrates through a reserved duct above the column, a base plate and a taper hole anchor ring are sleeved on the exposed end of the cat anchor, after the cat anchor is tensioned through a jack, a clamping piece is punched into the tape hole anchor ring for wedging the cat anchor; the reserved duct is filled by the structural mortar. After the amplification foot and the excavating and digging foundation are bounded to a reinforcement cage on site, the concrete is overall cast on the amplification foot and the excavating and digging foundation, and the amplification foot and the excavating and digging foundation are buried in a bearing stratum. The slope excavating and digging foundation has the advantages of simple structure, simplicity in operation and capability of effectively improving the integrated stability of a power transmission tower footing, and improving the anti-uplifting capability and the anti-dumping capacity of the power transmission tower footing on the slope of a mountainous area with the complicated geological condition.

Description

technical field [0001] The invention relates to the technical field of slope tower foundations, in particular to a slope excavation foundation with pile anchors, which is suitable for power transmission tower foundations on slopes in mountainous areas with complex geological conditions, and provides a method for improving the pullout and overturning resistance of slope tower foundations. an effective method. Background technique [0002] my country is a mountainous country, and the mountainous area accounts for 2 / 3 of the country's total area. With the gradual implementation of national large-scale power transmission projects such as west-to-east power transmission, it has become inevitable to build power transmission lines in mountainous areas. In the construction of water conservancy, highways and other industrial and civil facilities, it is often encountered that buildings (structures) are built on slopes. Most of the tower foundations of power transmission line project...

AI Technical Summary

Problems solved by technology

[0003] At present, there is no clear reference standard for the design method of the slope foundation in the current code. In order to improve the anti-overturning performance of the slope tower foundation, the buried depth of the traditional independent foundation under the column is often set to a large depth, which will waste building materials. Economic problems, and at the same time, it is easy to cause the column to break due to excessive buried depth, and it cannot well improve the anti-lifting and anti-overturning capabilities of the transmission tower foundation on the slope

[0004] For high-voltage transmission tower foundations with good geological conditions, excavated foundations are often used; but for mountainous slope strata combinations where the surface is a covering layer and the bottom is a bearing layer, the traditional excavated foundations cannot adapt to such complex structures. geological conditions

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