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Anchor system for fixing steel strand in pre-stressed structure

A prestressed structure and steel strand technology, applied in the field of anchoring systems, can solve the problems of difficult configuration of beam-column main reinforcement and node shear stirrups, volume, unit area and self-weight, and difficulty in setting, so as to improve the design. Space and constructability, improving restraint effect, compressing floor space and space effect

Inactive Publication Date: 2013-03-20
DALIAN NATIONALITIES UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the common disadvantages are: the volume, single area and self-weight are large, and it is difficult to set up in the beam-column joints of the building structure.
The common square compression plate makes it extremely difficult to configure the beam-column main reinforcement and the joint shear stirrup in the joint area

Method used

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  • Anchor system for fixing steel strand in pre-stressed structure
  • Anchor system for fixing steel strand in pre-stressed structure

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings. Such as figure 1 As shown, an anchorage system for fixing steel strands in a prestressed structure includes an anchor plate 1, an anchor backing plate 3, an anchoring spiral rib 4 and a clip 2; the anchor plate 1 has 12 Circular anchor plate 1 with three oblique holes, installed on the outermost side of the tension side of the steel strand; there are 12 sets of clips 2, which are respectively matched with 12 oblique holes, and each set of clips 2 consists of three clips. Use a hard rubber ring to form a set; the anchor plate 1 is installed directly below the anchor plate 3, and the circular hole in the middle of the anchor plate 3 is nested inside the bellows 5 reserved in the concrete member. The lower spiral rib 4 is installed on the outer periphery of the anchor backing plate 3; the main body of the anchor backing plate 3 is in the form of a tapered cylinder from the...

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PUM

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Abstract

The invention discloses an anchor system for fixing a steel strand in a pre-stressed structure. The anchor system comprises an anchor board, an anchor bearing plate, below-anchor spiral ribs and clamping pieces, wherein a main body of the anchor bearing plate is in a cylindrical form and gradually contracts from outside to inside; three round pressure-bearing steel boards are adhered to the outer side of the cylindrical main body at certain intervals; the sizes of the three-order steel boards are gradually reduced from outside to inside; and the middle part of the cylindrical main body is used for threading of pre-stressed steel. The anchor bearing plate of the anchor system adopts the form that the three-order round pressure-bearing boards are arranged along depth, a first-order pressure-bearing board shares more than a half of concentrated force, a second-order pressure-bearing board and a third-order pressure-bearing board share about 2 / 3 and 1 / 3 of the residual concentrated force, and the concentrated force of the anchor board is uniformly transmitted to the deep part of concrete below an anchor, so that not only can partial pressure stress under the anchor be prevented from being too concentrated, but also the limitation effect of the below-anchor spiral ribs can be effectively improved. Therefore, the occupied area and the space of the anchor bearing plate can be greatly reduced, and a design space and a construction property for anchor configuration in beam-column node positions of a reinforced concrete frame can be greatly enlarged and improved.

Description

technical field [0001] The invention relates to a device used in prestressed structures of buildings and bridges, in particular to an anchorage system used for fixing steel strands in prestressed structures. Background technique [0002] The development of the anchorage system is mainly matched with 12 stranded wires with a diameter of 12.7mm on the tension side most commonly used in prestressed structures. The anchorage system is named CUUI13-12. [0003] Domestic and foreign representative anchorages OVM series (Ovam Company of China), ATC series (Antosen Company of Japan), FNSN series (French Company of France), etc. are widely used in civil engineering and bridge structures, and their common feature is uniform Meet the seismic design and construction requirements. However, the common disadvantages are: the volume, single area and self-weight are large, and it is difficult to set up in the beam-column joints of the building structure. The common square compression plate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C5/12E01D19/14
Inventor 崔建宇
Owner DALIAN NATIONALITIES UNIVERSITY
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