After exhausting all principles of construction applied to day it
becomes evident that the realisation of wide span structures is far
more limited by the necessity to avoid undue deformations than by
insufficient material strength. In research for potentialities to
overcome these limits unconventional methods of dealing with forced
deformations are analysed in the field of improved subsidence and
earthquake resistance. In further developing those methods designs
are presented to control deformations independent of the actual
stress situation by the application of self adjusting hydraulic
gears. Reflections on the margin of safety conclude the paper.
Resume En exploitant tous les possibilites des procedes de
construction actueIle- ment connus, la realisation de constructions
a grande portee n'est pas teIle- ment limitee par la resistance des
materiaux mains plut8t par la necessite de garder les deformations
dans des limites restreintes. Dans le but de la recherche de moyens
techniques permettants d'exclure ou de rendre inoffen- sif les
deformations non souhairees, de procedes speciaux de protection des
constructions contre les mouvements dynamiques du sol dus aux
phenomenes miniers ou aux tremblements de terre sont presentes et
analyses.
General
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