Prestress steel strand penetrating device

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...

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 fast, and the longer beam penetration period will lead to early shrinkage cracks in concrete, which will affect the durability of prestressed concrete structures.

3. There are certain safety hazards in the construction on the operation platform, and the installation is difficult

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