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Weryfikacja dokumentacji geotechnicznej z 1886 roku dla zabytkowego obiektu mostowego o przeznaczeniu militarnym

Kania M. M., Duda A.

Archiwum Instytutu Inżynierii Lądowej

2010

Nr 8

169-180

In order to estimate the current state of still used monumental hydrotechnical objects and bridges, geotechnical investigations and bearing capacity analysis of their foundations, have to be conducted. Foundations of these types of structures are not always available for direct diagnosis or for non-destructive methods of testing. It particularly concerns former foundations on timber piles. The results of research on geotechnical conditions of foundations of the bridge with the weir structure (called further: "the weir"), on the Cy-bina river in Poznań, have been presented in the paper. The weir was built in the 19th century as an element of fortification system for the Poznań fortress and is now only used as a small bridge. For this object have been found: the original design documentation of foundations, and also - using contemporary terminology - the original geotechnical documentation, dated from 1886. Field geotechnical investigations have been conducted in order to verify and correctly interpret the archival materials. Results of the research can be used for evaluation of interaction of object's foundations with subsoil. Diagnosis of structure of subsoil in the 19th century archival materials has been confirmed as very reliable.