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In the prestressed tensioning, the function of the anchor and the clamp is to bite the prestressed tendon after the prestressed tendon is stretched by the jack to limit its rebound, the two are used together, referred to as the anchor fixture, the jack in the post-tensioning prestressed tension is pushed on the end face of the beam, here the jack is actually pushed on the anchor backing plate instead of directly pushing on the end face of the beam, if the jack concentrates all the load in a position at the end of the beam, it will cause the force to concentrate and cause the cracking of the beam section, the anchor backing plate evenly disperses the load of the jack through the spiral bar behind it to the whole beam section to avoid the generation of cracks caused by force concentration, and the anchor backing plate also has a function is groutingThere is a grouting hole on the anchor plate for hole grouting
Snail Municipal has prepared a learning network disk for the 2024 Municipal Candidates, which contains the 2024 first-level constructor municipal textbook electronic version of the searchable version with a catalog, as well as past questions, municipal courses, construction pictures and construction animations and other materials, all of which are being updated, please get the download address on the official account, more first-level constructor municipal courses, pay attention to snail municipal