Large-tonnage prestress cluster anchor rod assembly used in rock anchor

Abstract

The invention discloses a large-tonnage prestress cluster anchor rod assembly used in a rock anchor. The large-tonnage prestress cluster anchor rod assembly comprises a cluster anchor rod main reinforcement assembly and a chain type sliding ring assembly sleeved on the cluster anchor rod main reinforcement assembly, wherein the lowermost end of the chain type sliding ring assembly is fixedly connected to the bottom of the cluster anchor rod main reinforcement assembly; the chain type sliding ring assembly can freely slide along the cluster anchor rod main reinforcement assembly and can be unfolded under the action of gravity after being installed and positioned in an anchor hole to form a wave-shaped string-type structure. When the large-tonnage prestress cluster anchor rod assembly is used for the rock anchor, the cluster anchor rod main reinforcement assembly is used for bearing tension, the chain type sliding ring assembly can be matched with high-strength steel fiber concrete and rock mass to bear pressure together, structural stress is definite, a large outer axial load can be borne, the application range is wide, and stress performance is reliable; the prestress cluster anchor rod assembly can be manufactured and assembled in a full-assembly mode in a factory, so that site construction measures are greatly simplified, and site construction safety and engineering construction quality are improved.

Description

technical field

[0001] The invention relates to the fields of civil engineering such as bridge engineering and construction engineering, and in particular to a large-tonnage prestressed cluster bolt assembly used in rock anchors. Background technique

[0002] With the construction of a large number of suspension bridges in mountainous areas and the characteristics of mountainous bridges, the selection of suspension bridges has attracted much attention. The anchor is the main load-bearing component of the suspension bridge. The superstructure load of the suspension bridge is transmitted to the main cable through the suspender, and then transferred to the anchor by the main cable. The anchor is related to the success or failure of the bridge construction. The commonly used anchors for suspension bridges are gravity anchors and tunnel anchors. Gravity anchors resist the huge main cable tension through their own weight and the friction and embedding force between them and the fo...

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