Hydraulic Structures: Fourth Edition
Fig. 3.12 Shira buttress dam, UK ...
ARCH DAM ANALYSIS 157 In structural terms the massive buttress dam is constructed from a series of independent ‘units’, each com ...
collapse, as occurred with the 61 m high Malpasset cupola dam (France) in 1959. The concepts of overturning and sliding stabilit ...
ARCH DAM ANALYSIS 159 and the volume of the arch will be functions of the entry angle selected. The optimum value of is determi ...
empty condition. To alleviate this it may be necessary to introduce an upstream prop, as indicated on the figure, or to modify t ...
ARCH DAM ANALYSIS 161 presented in Boggs (1975), and refined as necessary by mathematical or physical models. 3.4.3 Arch stress ...
The ring theories consider water load only, self-weight stresses being determined separately and superimposed if significant to ...
ARCH DAM ANALYSIS 163 implicit in elastic ring theory is similarly untenable because of restraint at the abutment, and also the ...
underlying TLA in the context of an arch or cupola dam, i.e. arch–cantilever load distribution and node deflection matching, are ...
DESIGN FEATURES AND CONSTRUCTION 165 3.5.2 Cut-offs and foundation grouting The cut-offs under modern concrete dams are invariab ...
Fig. 3.17 Grouting and pressure relief drain systems Fig. 3.18 Influence of relief drain configuration on mean internal uplift p ...
DESIGN FEATURES AND CONSTRUCTION 167 3.5.4 Internal design features Inspection galleries.A low-level inspection gallery is nece ...
Load transfer and continuity.Although gravity dams are traditionally designed on the basis of independent free-standing vertica ...
DESIGN FEATURES AND CONSTRUCTION 169 phase, e.g. rock excavation and foundation grouting etc. Detailed pre- planning of all cons ...
3.6 Concrete for dams 3.6.1 General Concrete is a superficially inert but chemically and physically complex construction materia ...
CONCRETE FOR DAMS 171 durability are intimately linked for a dense, well-proportioned concrete mix. Less immediate relationships ...
Water.Water for use in concrete should be free of undesirable chem- ical contamination, including organic contaminants. A gener ...
CONCRETE FOR DAMS 173 achieve this is largely controlled by the physical characteristics of the fresh concrete, notably its cohe ...
immersion vibrators mounted on suitable tracked plant running on the surface of the concrete pour. Planning of concreting operat ...
THE ROLLER-COMPACTED CONCRETE GRAVITY DAM 175 the development of rapid continuous construction techniques based on the use of s ...
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