Prestressed rock bolt foundation with replaceable bolts

Abstract

The invention discloses a prestress rock anchor rod foundation with anchor rods capable of being replaced. The prestress rock anchor rod foundation comprises a concrete bearing platform formed by concrete. A plurality of high-strength grouting piles circumferentially distributed are arranged on the bottom face of the concrete bearing platform. The prestress rock anchor rods are coaxially arranged in the high-strength grouting piles. The upper ends of the prestress rock anchor rods are connected with top anchor rod fixing plates through top nuts. An anchor cage ring assembly is arranged in the center of the concrete bearing platform. The prestress rock anchor rods are sleeved with first rigidity sleeves used for isolating grouting materials. The lower ends of the prestress rock anchor rods penetrate bottom anchor rod fixing plates and are in threaded connection with first isolation caps integrally arranged and used for isolating concrete. The opening ends of the first isolation caps are in sealed connection with the bottom anchor rod fixing plates. The integrally-arranged isolation caps are adopted in the prestress rock anchor rod foundation, a structure form of a sealing assembly is changed, and the prestress rock anchor rod foundation has the beneficial effects that cost is reduced, and replacing is convenient.

Description

technical field [0001] The invention relates to the technical field of civil engineering in the wind power generation industry, in particular to a prestressed rock bolt foundation with replaceable bolts and a replacement construction method. Background technique [0002] At present, the racks and towers of large or very large equipment, including wind generators, wind turbines, power line street lighting and signaling devices, bridge supports, commercial signs, highway signboards, ski lifts and other buildings are all constructed on site. Concrete foundation support. [0003] Especially in recent years, with the rapid development of my country's economy and the improvement of social environmental protection awareness, the scale of wind power generation is increasing day by day, and wind turbine towers have gradually become the mainstream. In order to adapt to different geological conditions, there will be different concrete foundations. In mountainous conditions, such as ha...

AI Technical Summary

Problems solved by technology

First of all, the nut box and the nut are set separately. In order to realize the circumferential fixation of the nut, the nut needs to be welded on the lower anchor plate. cost; secondly, in order to meet the construction conditions, the plastic sleeve 42 and the anchor bolt 4 need a certain gap, and the entire anchor bolt 4 device is basically filled in the middle of the concrete, and the concrete is bound to produce plastic sleeve 42 in the process of pouring. The force of extrusion forces the deformation of the plastic sleeve 42 so that the anchor bolt 4 and the plastic sleeve 42 are not coaxial, and it is difficult to unscrew the broken anchor bolt 4 for replacement; again, the two ends of the plastic sleeve 42 are heated by shrinking The sleeve 41 is shrink-sealed, so that the caliber at the insertion port of the plastic sleeve 42 becomes smaller, see Figure 14 As shown, then the new anchor bolt 4 is difficult to insert in the plastic sleeve 42, thereby causing the replacement anchor bolt 4 to be inconvenient

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