4.1 Calculation methods
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Besides the eight different calculation methods available in ELPLA
to analyze foundations, a new method "Flexible foundation
(method 9)" is added. This method can be used for settlement
calculations of flexible foundations such as embankments, dams or
direct loads on the ground (Figure B-51). |
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System of flexible, elastic and rigid foundations can be analyzed
together (Figure B-52). |
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The influence of flexible neighbor foundations or external loads
of different arts on the examined foundation can be determined .
Until now, it was possible to determine only the influence of
elastic or rigid neighbor foundations (Figure B-53). |

Figure B-51 Flexible foundation

Figure B-52 System of flexible, rigid and elastic foundations

Figure B-53 Influence of flexible neighbor foundations
- Transitional or rotational spring stiffness can be
introduced on nodes for the rigid slab (method 8). Until now, it was
available only for methods 1 to 7. The springs can be used for the
analysis of the rigid pile caps (Figure B-54).
- Negative contact pressure can be eliminated for methods 1
to 8, if it appears on the bottom of the foundation. Until now,
elimination of negative contact pressures was available for methods 4, 6
and 8 (Figure B-55).

Figure B-54 Rigid raft with transitional and rotational spring

Figure B-55 Elimination of negative contact pressure
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