| With the development of prestressing technology and improvement of metallurgical industry, the strength of prestressed concrete strands increased more and more from the first 1470MPa to 1860MPa. In the end of 90', the strands with 2000MPa strength became available. Because of the former anchorage systems designed according to matching 1860MPa strength strands in the beginning of 90', they can not be suitable any more for the super strength strands with 2000MPa. Therefore, some accidents occurred such as strands sliding and broken when tensioning. In addition, the advantages of the new materials as their high mechanics performance are not be used completely as the prestressing structures was designed as per the 1860MPa strands, which will result in the waste of materials, In view of the above-mentioned facts, by means of analyzing the development of anchorage systems home and abroad, in connection with the characteristics of the super strength strands(2000MPa), this topic made a research on HVM15 Anchorages by theoretical calculation and finite element analysis, and also on the manufacturing process and test. This article is the summary of the research and the work what we have done for this project. |
PDF Full Text Request