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Stress-strain distribution in soil base under layer-by-layer concreting of lower mat of turbine foundation
Conclusions During the process of concreting of the foundation, the hardening part of the formed mat is increased, and the entire mat deflects with downward convexity.The contact pressure diagram is wavy, and the contact pressures increase during the concreting process, taking on large values in the central part of the mat.The pressures beneath the foundation underside for the uniform load caused by the dead weight of the mat produce its bending in both directions with tension in the upper part, whereas for analysis of the mat by the theory of elasticity without taking into account the construction technique, tension from bending shoudl occur in the lower part. Consequently, the deflections and bending moments occurring in the mat during the concreting process under the action of its dead weight are opposite in sign with respect to the design deflections and moments due to the action of the superstructure load on the mat. Thus, the total deflections and bending moments are smaller than the design values. The difference is larger for a larger share, with respect to the total load, of the load due to the dead weight of the mat.
Stress-strain distribution in soil base under layer-by-layer concreting of lower mat of turbine foundation
Conclusions During the process of concreting of the foundation, the hardening part of the formed mat is increased, and the entire mat deflects with downward convexity.The contact pressure diagram is wavy, and the contact pressures increase during the concreting process, taking on large values in the central part of the mat.The pressures beneath the foundation underside for the uniform load caused by the dead weight of the mat produce its bending in both directions with tension in the upper part, whereas for analysis of the mat by the theory of elasticity without taking into account the construction technique, tension from bending shoudl occur in the lower part. Consequently, the deflections and bending moments occurring in the mat during the concreting process under the action of its dead weight are opposite in sign with respect to the design deflections and moments due to the action of the superstructure load on the mat. Thus, the total deflections and bending moments are smaller than the design values. The difference is larger for a larger share, with respect to the total load, of the load due to the dead weight of the mat.
Stress-strain distribution in soil base under layer-by-layer concreting of lower mat of turbine foundation
Il'ichev, V. A. (author) / Dunaev, Yu. B. (author) / Karamzin, V. E. (author)
1987
Article (Journal)
English
Local classification TIB:
770/6545/8000
BKL:
56.20
Ingenieurgeologie, Bodenmechanik
Concreting Control Technology of Mass Foundation Slab
| Trans Tech Publications | 2012
Concreting Control Technology of Mass Foundation Slab
| Tema Archive | 2012