Prestress steel strand penetrating device

A technology for prestressed steel strands and steel strands, which is applied in construction, building construction, and processing of building materials, etc., can solve the problems affecting the durability of prestressed concrete structures, long construction period of piercing, and labor of multi-section steel. , to achieve the effect of simple construction, high operation efficiency and strong adaptability

Inactive Publication Date: 2010-03-03
THE 5TH ENG MBEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are the following problems when using this method to thread the prestressed concrete structure: 1. More shaped steel and labor are needed to set up the operating platform.
2. The construction period is long
In high temperature areas, the strength of concrete grows extremely

Method used

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  • Prestress steel strand penetrating device
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Experimental program
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Embodiment Construction

[0017] The present invention will be described in further detail below with reference to the accompanying drawings.

[0018] Lower the hinge and move upward from the root of the steel pipe arch on the Dali Bank

[0019] The present invention comprises circular tubular steel strand restraining ring 1, self-anchor pulling mandrel 2 and anchor piece 8, and self-anchoring pulling mandrel 2 is made up of conical rod 5 and column rod 4 connected as a whole, and The front end is processed with a snap ring installation hole 3 that runs through the side wall, the tapered rod 5 of the self-anchor pulling mandrel 2 is wrapped in the middle of the bundled steel strand 6, and the bundled steel strand 6 of the self-anchor pulling mandrel 2 is wrapped In the steel strand confinement ring 1, a tapered anchor piece 8 is installed at the gap 7 at the front end of the bundled steel strand 6, and the anchor piece 8 is wedged into the gap 7 at the front end of the bundled steel strand 6 to make th...

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PUM

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Abstract

The invention discloses a prestress steel strand penetrating device, comprising a steel strand restraint ring; the prestress steel strand penetrating device is characterized in that: the device also comprises a self-anchored hauling core rod and an anchor piece; the self-anchored hauling core rod is composed of a conical rod and a column; bunched steel strands which are wrapped with the self-anchored hauling core rod are sheathed in the steel strand restraint ring, the anchor piece is wedged in a gap of the bunched steel strands to lead the bunched steel strands to be extruded and tightened and to be closely attached to the inner wall of the steel strand restraint ring, and the self-anchored hauling core rod is fixed on a steel wire which penetrates out of a clamping ring mounting hole with a manual traction method in advance and is located by the hauling of a winding engine. As a winding engine electrical device can be controlled accurately, thereby being beneficial to installation ofpost-tensioned prestressing tendon and ensuring construction safety. The device has strong adaptbilitym convenient construction, high operating efficiency and high stability under the strand prickingconstruction of prestressing tendons with different structure and type. The device is not only suitable for strand pricking construction of the prestressing tendon of a prestressing hole of a plasticcorrugated pipe, but also is suitable for strand pricking construction of the prestressing tendon of the prestressing hole of a steel corrugated pipe.

Description

technical field [0001] The invention relates to a prestressed concrete structure post-tensioning prestressed tendon threading construction device, in particular to a prestressed steel strand threading device for installing prestressed beams. Background technique [0002] With the rapid development of my country's economy and society, my country's construction industry has developed unprecedentedly, and infrastructure construction is blooming all over the country. Post-tensioning prestressed construction can be seen everywhere in various engineering sites. The most commonly used beam-through method is to form concrete in the main structure Finally, in the prestressed tunnel that has been prepared, the work of piercing the prestressed tendons is completed in multiple times manually. There are the following problems when using this method to thread the prestressed concrete structure: 1. More shaped steel and labor are needed to set up the operating platform. 2. The construction...

Claims

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Application Information

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IPC IPC(8): E04G21/12
Inventor 鲁军明彭建萍谢季军王湘桥叶绍其赵则锋李兰祖胡利宾刘为林刘合茂朱能杰王涛侯培军
Owner THE 5TH ENG MBEC
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