Prestressed barrel foundation with replaceable anchors

Abstract

The invention discloses a prestress cylindrical foundation capable of replacing anchor bolts. The prestress cylindrical foundation comprises a hollow concrete column body formed by reinforced concrete; a lower anchor plate is mounted between an inner template and an outer template at the bottom of the concrete column body; an upper anchor plate corresponding to the lower anchor plate is arranged at the top of the concrete column body; multiple anchor bolts penetrating through the upper anchor plate and the lower anchor plate are embedded in the concrete column body; the upper ends of the anchor bolts are fixed through upper nuts; the anchor bolts are coated with rigid sleeves for isolating concrete; two ends of the rigid sleeves are tightly connected to the upper anchor plate and the lower anchor plate; the lower ends of the anchor bolts penetrate through the lower anchor plate, and are in threaded connection with isolation caps integrally arranged for isolating the concrete; and opening ends of the isolation caps are tightly connected with the lower anchor plate. The prestress cylindrical foundation adopts the integrated isolation caps, and improves the structural form of sealing modules to achieve the advantages of cost reduction and convenience for replacement.

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 cylindrical foundation with replaceable anchor 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] The prestressed cylinder foundation is generally suitable for Gobi geology or soft soil, such as sandy soil, clay, collapsible loess, expansive soil, gravel soil foundation, etc. In the traditional prestressed cylindrical foundation, the bottom end of the anchor bolt is fixed by a nut, and the entire anchor bolt and nut are exposed in the concrete. If the anchor bolt is to be removed, the anch...

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 is basically filled with concrete, and the concrete will inevitably squeeze the plastic sleeve 42 during the pouring process. The force of pressure forces the deformation of 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; 41 is shrink-sealed, so that the caliber at the insertion port of the plastic sleeve 42 becomes smaller, see Figure 11 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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