IN-SITU TESTING STUDY ON DURABILITY OF PRESTRESSED ANCHORAGE STRUCTURES

摘要

Prestressed anchorage technique has become the first choice in reinforced engineering of high slope for many merits, but the research on its durability and life security is still in initial step. Based on the analysis on corrosion data of anchorage structure on site, the regular appearance of anchorage structures subject to corrosion has been discussed - appearing "tri-stage" and has obvious stress nonuniformity. The service life of anchorage cables in enriched water environment is preliminary forecasted and some factors that can influence the durability of the anchorage structure are analyzed. Finally, some anticorrosive matters that need to pay attention for anchorage structures are brought forward.