Effects of the construction method on pile performance: Evaluation by instrumentation. part 2: Experimental site at the faculty of engineering of the University of Porto

• Type: Article in International Scientific Journal
• Date: 2011

Authors

Paulo José Rocha de Albuquerque (Author) Other; Faiçal Massad (Author) Other; António Viana da Fonseca (Author) FEUP; David de Carvalho (Author) Other; Jaime Santos (Author) Other; Elisabete Costa Esteves (Author) Other

Journal

Title: Soils and Rocks

Vol. 34 No. 1

Pages: 51-64

ISSN: 1980-9743

Publisher: Associacao Brasileira de Mecanica dos Solos

Indexing

ISI Web of Knowledge

ISI Web of Science

Scopus - 0 Citations

COMPENDEX

Scientific classification

CORDIS: Technological sciences > Engineering > Civil engineering > Geotechnics

Other information

Authenticus ID: P-008-2G9

Abstract (EN): Three different types of piles (bored, CFA and precast driven) were installed in the experimental site located in the Campus of the Faculty of Engineering of the University of Porto to study the effects of the construction method on pile performance. The subsoil is a residual granitic soil reaching depth levels over 20 m. In this site, several field and laboratory tests were conducted to obtain the local geotechnical parameters. Static pile load tests with load-unload cycles were performed. Bored and CFA piles were instrumented along the depth, with installation of retrievable sensors; a flat-jack load cell was inserted at the bottom of the bored pile. Load tests results demonstrated that bored and CFA piles show similar behavior: i) the applied load reaching the pile tip was about 42%, ii) and the average mobilized lateral resistance was about 60 kPa. After the tests were completed, piles were extracted for further inspection of shaft and load cell conditions. The driven pile although having a smaller cross-section showed a stiffer response and higher resistance than the other two piles, which are a clear indication that the installation effects play an important role in the pile response. The results are compared to those obtained in Part 1 of this article relating to tests performed at the Experimental Field of Unicamp (State University of Campinas).

Language: English

Type (Professor's evaluation): Scientific

Notes: http://www.soilsandrocks.com.br/