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IBRACON Structures and Materials Journal • 2012 • vol. 5 • nº 2
Three-dimensional analysis of two-pile caps
Figure 14 – Splitting reinforcement stresses
in model 4 (ATENA)
Table 10 – Stress and strain values on ultimate load of numerical models and Delalibera [1]
experimental specimen
Pile caps specifications Delalibera [1]
Model 1 Model 2
Model 3 Model 4
Model 5
Maximum strain in ties
steel bars
0,196%
0,195% 0,239%
0,390%
0,198
0,190
Maximum stress in ties
steel bars
392 MPa 414 MPa
501 MPa
547 MPa
415 MPa
399 MPa
Figure 15 – Anchorage length and ties stresses [MPa] in the inferior nodal zone of model 1
analysis of pile caps with two piles submitted to axial
and eccentric forces. Thesis (Doctorate). School of
Engineering of São Carlos, São Paulo University,
São Carlos, 2006 (in Portuguese).
[02] CERVENKA, V.; JENDELE, L. e CERVENKA, J.
ATENA Program Documentation—Part 1: Theory.
Praha, Czech Republic, 2005.
[03] BLÉVOT, J. L.; FRÉMY, R. Semelles sur Pieux.
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V. 20, No. 230, pp. 223-295, 1967.
[04] MAUTONI, M. Pile caps with two piles. São Paulo,
Grêmio Politécnico, 1972 (in Portuguese).
[05] CLARKE, J. L. Behavior and design of pile caps with
four piles. Cement and Concrete Association, London,
Technical Report n.42.489, 1973.
[06] SABNIS, G. M.; GOGATE, A. B. Investigation of thick
slab (pile cap) behavior. ACI Structural Journal,
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[07] ADEBAR, et al. Strut-and-tie models for design of pile
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81-91, Jan-Febr, 1990.
[08] DELALIBERA R, G.; GIONGO, J. S. Variance analysis