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Large-tonnage jack tension construction technology for non-bonded prestressed silo

A construction technology and jack technology, which is applied in the field of unbonded prestressed silo large-tonnage jack tensioning construction technology, can solve the problems of long construction period and low work efficiency, and achieve the improvement of construction quality, cost saving and uniform force Effect

Active Publication Date: 2009-12-09
李延春 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a long construction period and low work efficiency

Method used

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  • Large-tonnage jack tension construction technology for non-bonded prestressed silo
  • Large-tonnage jack tension construction technology for non-bonded prestressed silo
  • Large-tonnage jack tension construction technology for non-bonded prestressed silo

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] The construction of the silo generally starts with the binding of ordinary steel bars for the main body of the silo, the laying of unbonded prestressed tendons, and pouring of concrete. After stretching, the treatment of the anchor end is carried out. Except that the structure of the anchor plate, the hanging position of the hanging basket, and the hanging method of the jack are different from the prior art, the tensioning construction technology of the large-tonnage jack for the unbonded prestressed silo of the present invention has other construction technologies, such as the main body of the silo. The binding of ordinary steel bars, the laying of unbonded prestressed tendons, the installation of pouring concrete, anchors and anchor pads, and the treatment of anchor ends are the same as those of the existing technology, strictly in a...

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Abstract

The invention discloses large-tonnage jack tension construction technology for a non-bonded prestressed silo. The invention aims to provide construction technology which uses a flat wrought iron anchor backing plate matched with an anchor device, takes a nacelle as an operation platform for tension construction, and uses a large-tonnage jack to perform cluster beam tension on prestressing tendons to improve construction quality, reduce construction cost and shorten construction period, wherein the anchor backing plate comprises a square wrought iron anchor backing plate body; and the square wrought iron anchor backing plate body is provided with an anchor eye and a mounting hole which correspond to the anchor device. A suspension mode of the nacelle is that a conical roof is provided with a nacelle suspension embedded part, which ensures that the conical roof of the silo becomes the balance weight of the nacelle; and a suspension mode of the jack is that the top of a buttress is provided with a jack hanger embedded part; the hanger embedded part is fixedly connected with a supporting beam; the outer end part of the supporting beam is welded with a lifting ring; one end of a steel wire rope is fixedly connected with the lifting ring; while the other end hangs down to the bottom of the silo; a connecting plate is connected with the steel wire rope; and the connecting plate is connected with a jack hanger.

Description

technical field [0001] The invention relates to a tensioning construction technology of a large-tonnage jack for a non-bonding prestressed silo. Background technique [0002] The construction process of the concrete prestressed silo is to bind the arc-shaped prestressed tendons and the ordinary steel bars of the silo first, and place them one after another at the same time. After the strength of the silo concrete in the later stage reaches 100%, the prestressed tendons are stretched, and then Carry out anchor processing. [0003] At present, the tensioning construction technology of prestressed tendons is to install a cast iron tapered anchor plate at the tensioning end of the prestressed tendons, and use the scaffolding erected during the concrete construction of the warehouse as a tensioning operation platform to carry out single-beam tensioning construction. [0004] Because the end of the cast iron tapered anchor pad is a trumpet-shaped closed structure, the unbonded pr...

Claims

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Application Information

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IPC IPC(8): E04G21/12E04H7/26
Inventor 李延春
Owner 李延春
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