Brief description of the 2 methods of using prestressing anchorage
Release time:
2023-04-28
Briefly describe the two ways to use prestressed anchors
Prestressed anchors are a kind of anchors often used in building construction and play an important role. Due to the different construction sites, its use method is also different. Next, we will mainly talk about the two commonly used methods.
First, the first Zhang Law
First, on the pedestal, according to the design requirements, the steel bar is tensioned to the → of controlling stress, and the anchor is temporarily fixed → poured concrete→ until the concrete reaches more than 75% of the design strength, cut off and relax the steel bar, relying on the bonding force between the steel bar and the concrete to transmit the prepressure. Simple construction, self-anchoring by adhesion, no need to consume other anchors, prestressed anchors can be reused, economical and stable quality in mass production. It is used in the factory production of small and medium-sized components.
Second, the post-tensioning method
The main processes are buried pipe holes→ pouring concrete→ pipes→ maintenance and ribbing tensioning→ anchoring → grouting. Rely on the prestressed anchor to prevent the elastic rebound of the steel bar, so that the cross-sectional concrete obtains the precompression stress. This method is simple to use, does not require a tension pedestal, flexible production, but requires reliable prestressed anchors and jacks, prestressed anchors use a large amount of steel, suitable for on-site construction of large components.
The above two are the commonly used construction methods of prestressed anchors, and it is recommended that you choose the correct operation method according to the actual situation in the actual operation to ensure the safety of the operation.
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