| The in-depth contents |
| Publication year |
1997 |
| PDF |
Download |
| Title |
ANALYTICAL ESTIMATION FOR STRESS RELAXATION ON TENSIONED MEMBRANES UNDER LONG TERM LOADING |
| Author |
Shiro Kato,Tatsuya Yoshino,Hirokazu Minami
|
| Summary |
The present paper focuses on relaxation of initial stresses in hyperbolic paraboloidal roof of tensioned membranes for long term loadings. To follow such a behavior，eight-node isoparametric elements including visco-elasto-plastic constitutive equations that have been drawn by fabric lattice model，are utilized. The long term loadings are applied to HP roof through following5 steps; (0) initial stresses are introduced into the membrane roof to form the HP roof，(1 ) the roof is left for one year without external loading，and (2) uniform snow loading of 60kgf/m2a re applied，and then，(3 ) the roof is left for one day with the uniform snow loading，an d finally，(4 ) the snow load is released to zero. From the analytical results，the facts that almost of initial stresses are lost for long term loadings are revealed.
|