Keywords: Fondation ; Mur de soutenement ; Pieux ; Capacite portante ; Ancrage ; Dimensionnement Reference Record created on 2004-09-07, modified on 2016-08-08

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Foundation analysis and design

Improvement Characteristics of Ground Using C.G.S Through Field Case Study

This calculation documents the design of the Spent Nuclear Fuel (SNF) and High-Level Waste (HLW) Cask storage slab for the Aging Area. The design is based on the weights of casks that may be stored on the slab, the weights of vehicles that may be used to move the casks, and the layout shown on the sketch for a 1000 Metric Ton of Heavy Metal (MTHM) storage pad on Attachment 2, Sht.1 of the calculation 170-C0C-C000-00100-000-00A (BSC 2004a). The analytical model used herein is based on the storage area for 8 vertical casks. To simplify the model, the storage area of the horizontal concrete modules and their related shield walls is not included. The heavy weights of the vertical storage casks and the tensile forces due to pullout at the anchorages will produce design moments and shear forces that will envelope those that would occur in the storage area of the horizontal modules. The design loadings will also include snow and live loads. In addition, the design will also reflect pertinent geotechnical data. This calculation will document the preliminary thickness and general reinforcing steel requirements for the slab. This calculation also documents the initial design of the cask anchorage. Other slab details are not developed in this calculation. They will be developed during the final design process. The calculation also does not include the evaluation of the effects of cask drop loads. These will be evaluated in this or another calculation when the exact cask geometry is known.

Additional excerpts

/pdf/design-of-a-concrete-slab-for-storage-of-snf-and-hlw-casks-4sjhrtlo40.pdf

Design of a concrete slab for storage of snf and hlw casks

Noise Reduction in Novel Transmission with 3D Point Contact Gear System

Retaining walls are commonly used in engineering practice for the retaining of soil masses that would otherwise be unstable. However, earthquake induced forces may trigger an instability or cause failure for a retaining wall. This can have major consequences for the case of tall retaining walls subjected to heavy traffic, and is thus the focus of this work. The present paper concentrates on the investigation of earthquake loading on tall retaining walls supported by an anchor force. The combined surcharge and ground motion effects resulting from earthquakes will be examined. A limit equilibrium model approach is used based on Eurocode 7, and the principles of Eurocode 8 with relevance to retaining structures are also adopted. A graphical solution is developed for the practicing engineer for the stability assessment of tall retaining walls under the combined effect of traffic surcharge and earthquake induced motion. Using simple charts, a stability factor is determined for the retaining wall.

/pdf/seismic-stability-of-tall-retaining-walls-withtraffic-1dzeenhgtz.pdf

Seismic Stability Of Tall Retaining Walls WithTraffic Surcharge

Dans le design de chantiers remblayes on devrait proceder a l'evaluation des interactions aux interfaces entre le remblai et le massif rocheux encaissant. Dans ce papier, les auteurs presentent des resultats analytiques et numeriques de calculs effectues afin d'evaluer la reponse mecanique de chantiers etroits remblayes, tout en mettant l'accent sur l'effet du transfert de charge le long de l'interface entre la roche dure et le remblai qui peut etre considere comme une "roche molle". Les resultats indiquent que l'effet d'arche qui peut se developper dans le remblai a une influence significative sur la repartition de charge le long des murs et au bas des chantiers etroits. La discussion qui fait suite a la comparaison entre des calculs numeriques et analytiques typiques, met en evidence certains des facteurs d'influence clefs. On souligne aussi les limites des outils actuels d'analyse qui ne representent pas adequatement les facteurs clefs de l'interaction entre le remblai et les murs de la roche encaissante.

Foundation analysis and design

Citations

Improvement Characteristics of Ground Using C.G.S Through Field Case Study

Design of a concrete slab for storage of snf and hlw casks

Noise Reduction in Novel Transmission with 3D Point Contact Gear System

Seismic Stability Of Tall Retaining Walls WithTraffic Surcharge

Modélisation numérique des interactions entre le remblai minier et le massif rocheux de chantiers étroits remblayés

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