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Behaviour of ground anchors in stiff clays
The results of a full scale investigation on instrumented anchors, bored through a typical pliocenic stiff clay formation, are reported and analyzed. The variation with depth of the normal stress in the reinforcement bars, found to be non-linear up to failure load, is predicted by a non-linear numerical analysis of the interaction among the reinforcement, the grout mortar and the surrounding soil taking into account the cracking of the mortar. The best correlation with experimental results, however, is obtained with values of soil and mortar properties somewhat different from laboratory values.
A similar correlation of load-upheaval curves has been obtained, by the same analysis and with the same values of parameters, only for the first stage of the curves and not for the final stage, near to failure load.
This inconsistency is discussed, pointing out the need for further theoretical and experimental investigations.
Behaviour of ground anchors in stiff clays
The results of a full scale investigation on instrumented anchors, bored through a typical pliocenic stiff clay formation, are reported and analyzed. The variation with depth of the normal stress in the reinforcement bars, found to be non-linear up to failure load, is predicted by a non-linear numerical analysis of the interaction among the reinforcement, the grout mortar and the surrounding soil taking into account the cracking of the mortar. The best correlation with experimental results, however, is obtained with values of soil and mortar properties somewhat different from laboratory values.
A similar correlation of load-upheaval curves has been obtained, by the same analysis and with the same values of parameters, only for the first stage of the curves and not for the final stage, near to failure load.
This inconsistency is discussed, pointing out the need for further theoretical and experimental investigations.
Behaviour of ground anchors in stiff clays
Evangelista, Aldo (author) / Sapio, Giovanni (author)
Revue Française de Géotechnique ; 39-47
1978-01-01
9 pages
Article (Journal)
Electronic Resource
English
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