Hengshui Kaixiang Rubber Products Co., Ltd.

The permanent anchoring device used in prestressed concrete is an anchoring tool used in post-tensioned structures or components to maintain the tension of the prestressed tendons and transfer it
to the inside of the concrete, also known as It is a prestressed anchor. Anchors can be divided into two categories according to the type of use
Tension end anchors are installed at the ends of prestressed tendons and can always maintain the anchoring state of the prestressed tendons during the tensioning process of the prestressed tendons
State-of-the-art anchoring tool.
According to different anchoring types, tensioning end anchors can also be divided into clip-type anchors for tensioning prestressed steel strands, steel tapered anchors for tensioning
high-strength steel wires , pier head anchors for tensioning high-strength steel wires after heading, nuts for tensioning fine-rolled threaded steel bars, cold-cast heading anchors for tensioning multi-strand parallel steel wire bundles, etc. .
bFixed end anchors are installed at the ends of prestressed tendons and are usually embedded in concrete and are not used for tension. They are also called squeeze anchors
or anchors.
The latest standards for anchors for prestressed tendons are anchor clamps and connectors for prestressed tendons B/ of the People's Republic of China, and anchor clamps and connectors for prestressed tendons of the Ministry of Railways B/.
At present, the commonly used anchor specifications in China are
Anchors. The first letter of the Chinese pinyin for anchorage represents the steel strand with the specifications of the steel strand
. The steel strand with the strength of the steel strand generally used in our country refers to the steel strand to be worn. Number of wires.
bAnchor. The first letter of the Chinese pinyin for anchorage represents the steel strand with the specifications of the steel strand
. The steel strand with the strength of the steel strand generally used abroad refers to the steel strand to be worn. Number of wires.
Common system classifications of anchors
Circular anchors. The specification model is expressed as or This type of anchor cable anchor has good self-anchoring performance. Tension
Pulling generally uses a through-core jack
Flat anchor. The specifications and models are expressed as or the first letter of the Chinese pinyin of flat anchor, which means flat anchor
The meaning of flat anchor is mainly used for transverse prestressed hollow plate low-height box girders on the bridge deck to make the stress distribution more uniform and reasonable. Further
thin the thickness of the structure.
Grip wrap anchor. The specifications and models of fixed end anchors are expressed as or are suitable for situations where the design stress of the component end cloth is large or the end space is limited. It uses an extrusion machine to press the extrusion sleeve onto the steel strand. Wrapped anchors are pre-embedded in concrete and arranged as needed. After the concrete solidifies to the design strength, it is tensioned.
Supplementary anchors commonly used for post-tensioned prestressed tendons
The heading anchor system is to first pass the steel wire through the fixed end anchor plate and the round hole in the tension anchor cup, and then use a heading tool to Both ends of the steel wire are heading
and the purpose of applying prestress is achieved through tension anchors
The anchors are composed of the anchors and lining plates. The support bars are made of steel bars of the same level as the prestressed bars, and the lining plates are made of ordinary low carbon steel plates
. The three supporting bars of the supporting bar anchorage should be evenly arranged, and welded firmly perpendicular to the lining plate and the prestressed tendons, as shown in the figure. The welding of the steel bars should also be carried out before cold drawing of the steel bars. It is necessary to prevent the prestressed steel bars from being burned during welding.
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