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City bridge of post-tensioned prestressed anchorage and connector basic requirements

2014-09-18 10:28:01

City bridge of post-tensioned prestressed anchorage and connector basic requirements
City Bridges post-tensioned prestressed anchorage connector and basic requirements:
1. When the needs of anchor plate under the prestressed anchorage using fallopian tube, fallopian tube appropriate chooses steel or cast iron products.The anchor plate should be set enough spiral steel or steel bar mesh distribution.7. (or channel) in anchor plate and prestressed anchorage zone and adjacent should be vertical to each other.After a component set the appropriate on the anchor plate grouting hole.
2. Prestressed anchor, fixtures and connectors should have reliable anchorage performance and enough bearing capacity and good applicability, and should be consistent with existing national standards of the prestressed reinforcement with prestressed anchor, fixtures and connectors "GB/T14370 and the prestressed reinforcement application technology with prestressed anchor, fixtures and connectors regulation JGJ85 rules.
3. Suitable for high strength prestressed reinforcement of prestressed anchorage (or connector), can also be used to lower the strength of the prestressed reinforcement.Can only be applicable to the low strength of the prestressed anchorage of prestressed steel (or connector), shall not be used for high strength prestressed reinforcement.
4. The prestressed anchorage should satisfy sizing tension, tension and relaxation of prestressed requirements.Of prestressed anchorage dogan prestressed anchorage, besides should have a whole bunch of tensioning performance, it is appropriate with the possibility of a single tension.
5. Used in connectors, zhang method after must conform to the requirements for the performance of the prestressed anchorage.
6. Post-tensioned prestressed anchorage connector according to anchor in a different way, and can be divided into the clamp plate (single span and porous prestressed anchorage clip), the supporting type (heading prestressed anchorage prestressed anchorage, nut), taper plug type (steel cone of prestressed anchorage) bond type and the prestressed anchorage prestressed anchorage (extrusion, embossing, etc.).

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