Construction method of prefabricated root key-type wing plate foundation

Abstract

The invention discloses a construction method of a prefabricated root key-type wing plate foundation. A main concrete structure is included, and comprises a column body, wing plates and prefabricatedroot keys; an embedded part is connected to the top of the column body; the wing plates are uniformly arranged on the column body, and the wing plates and the column body are vertically intersected and close to the top; and a plurality of prefabricated root keys are vertically connected to the outer side of the column body, and the prefabricated root keys extend from the inside to the outside of the column body. According to the prefabricated root key-type wing plate foundation, the vertical and horizontal bearing capacity and lateral stiffness of the foundation can be effectively improved, the pile length and diameter of the pile foundation are reduced, the expansion of the conventional foundation is canceled, so as to reduce the safety risk, construction difficulty and engineering quantity of the foundation construction, the concrete transportation engineering quantity in mountainous is reduced, and the purposes of safety and reliability, cost saving and environmental protection areachieved.

Description

technical field [0001] The invention relates to the technical field of transmission line iron tower foundations, in particular to a construction method for a prefabricated root-bonded wing plate foundation. Background technique [0002] With the vigorous development of domestic high-voltage transmission line projects, the transmission lines need to pass through inaccessible mountains, Gobi and other landforms, and as the voltage level of transmission lines continues to increase, the horizontal and vertical loads of transmission towers acting on the foundation increase sharply. As a result, the size of the foundation continues to increase, the amount of steel and concrete required increases, and the cost increases accordingly. [0003] Excavated foundations and excavated pile foundations are very suitable for straight towers with large foundation forces, tension-resistant corner towers, and foundations with high outcropping tower positions, and are widely used in transmission...

AI Technical Summary

Problems solved by technology

When the horizontal load and the resulting bending moment are large, only the excavated foundation or the foundation type with multi-layer prefabricated root keys added to the excavated pile foundation is used, because the ability of the prefabricated root keys to resist horizontal loads is weakened under combined loads , it is necessary to lay more prefabricated root keys or increase the diameter of the pile body, which will lead to problems such as poor economy and difficult construction

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