Global Stability of a Dam: Difference between revisions
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| [[Image:GravityDamUplift1.png|350px|x350px|link=https://damfailures.org/lessons-learned/concrete-gravity-dams-should-be-evaluated-to-accommodate-full-uplift/]] | | [[Image:GravityDamUplift1.png|350px|x350px|link=https://damfailures.org/lessons-learned/concrete-gravity-dams-should-be-evaluated-to-accommodate-full-uplift/]] | ||
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|style="text-align:center; font-size:90%;"| Learn more about the need to consider uplift pressure when designing a gravity structure at [https://damfailures.org/lessons-learned/concrete-gravity-dams-should-be-evaluated-to-accommodate-full-uplift/ DamFailures.org] | |style="text-align:center; font-size:90%;"| Learn more [[about]] the need to consider uplift pressure when designing a gravity structure at [https://damfailures.org/lessons-learned/concrete-gravity-dams-should-be-evaluated-to-accommodate-full-uplift/ DamFailures.org] | ||
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There are a variety of forces against which a dam should be designed to adequately resist including but not limited to: self-weight, static water pressures, wave pressures, sediment buildup pressures, uplift water pressures, wind pressures, thermal loads, ice pressures, and earthquake forces. Materials used in the [[construction]] of dams include "earth, rock, tailings from mining or milling, concrete, masonry, steel, timber, miscellaneous materials (such as plastic or rubber) and any combination of these materials."<ref name="ASDSO">ASDSO, 2022</ref> | |||
"Design and evaluation of hydraulic structures requires and understanding of the interaction between the flow and the components of the structure. The non-hydrostatic forces generated by the flowing water are of particular interest. Historically, [[Physical Models|physical models]] have been the primary means for predicting hydrodynamic forces on hydraulic structures. Laboratory studies of hydraulic loadings require relatively large-scale physical models which are expensive to construct, instrument, and operate. The hydraulic evaluation costs can be decreased if computational methods are used in lieu of such physical models studies. Numerical models capable of calculating hydraulic loads on bridge piers, lock guard walls, culvert valves, tainter valves, floodwalls, and moored ships will result in more cost-effective [[structural]], mechanical, and geotechnical designs."<ref name="ERDC/CHL CHETN-IX-21">[[Calculating Forces on Components of Hydraulic Structures (ERDC/CHL CHETN-IX-21) | Calculating Forces on Components of Hydraulic Structures (ERDC/CHL CHETN-IX-21), USACE, 2009]]</ref> | |||
==Required Data== | ==Required Data== | ||
* [[Material Properties]] | * [[Material Properties]] | ||
* [[Loads / Load Cases]] | * [[Loads / Load Cases]] | ||
==Evaluation Criteria== | ==Evaluation Criteria== | ||
* [[Sliding Stability]] | * [[Sliding Stability]] | ||
* [[Rotational Stability]] | * [[Rotational Stability]] | ||
* [[Internal Stability (Stresses)]] | * [[Internal Stability (Stresses)]] | ||
==Types of Analyses== | ==Types of Analyses== | ||
* [[Linear vs. Non-linear]] | * [[Linear vs. Non-linear]] | ||
* [[Static Analysis]] | * [[Static Analysis]] | ||
* [[Dynamic Analysis]] | * [[Dynamic Analysis]] | ||
==Examples== | ==Examples== | ||
{{Website Icon}} [https://damfailures.org/lessons-learned/concrete-gravity-dams-should-be-evaluated-to-accommodate-full-uplift/ Learn more about the need to consider uplift pressure (DamFailures.org)] | {{Website Icon}} [https://damfailures.org/lessons-learned/concrete-gravity-dams-should-be-evaluated-to-accommodate-full-uplift/ Learn more about the need to consider uplift pressure (DamFailures.org)] | ||
{{Website Icon}} [https://damfailures.org/case-study/st-francis-dam-california-1928/ Learn from the critical oversights that led to the failure of St. Francis Dam (DamFailures.org)] | {{Website Icon}} [https://damfailures.org/case-study/st-francis-dam-california-1928/ Learn from the critical oversights that led to the failure of St. Francis Dam (DamFailures.org)] | ||
==Best Practices Resources== | ==Best Practices Resources== | ||
{{Document Icon}} [[Stability Analysis of Concrete Structures (EM 1110-2-2100)|Stability Analysis of Concrete Structures (EM 1110-2-2100) ( | {{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 6 Bulkhead Gates and Stoplogs) | Design Standards No. 13: Embankment Dams (Ch. 6 Bulkhead Gates and Stoplogs), USBR, 2018]] | ||
{{Document Icon}} [[Gravity Dam Design (EM 1110-2-2200)|Gravity Dam Design (EM 1110-2-2200) ( | {{Document Icon}} [[Strength Design for Reinforced Concrete Hydraulic Structures (EM 1110-2-2104) | Strength Design for Reinforced Concrete Hydraulic Structures (EM 1110-2-2104), USACE, 2016]] | ||
{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 13: Seismic Analysis and Design) | Design Standards No. 13: Embankment Dams (Ch. 13: Seismic Analysis and Design), USBR, 2015]] | |||
{{Document Icon}} [[Design of Hydraulic Steel Structures (ETL 1110-2-584) | Design of Hydraulic Steel Structures (ETL 1110-2-584), USACE, 2014]] | |||
{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 9 Static Deformation Analysis) | Design Standards No. 13: Embankment Dams (Ch. 9 Static Deformation Analysis), USBR, 2011]] | |||
{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 4 Static Stability Analysis) | Design Standards No. 13: Embankment Dams (Ch. 4 Static Stability Analysis), USBR, 2011]] | |||
{{Document Icon}} [[Calculating Forces on Components of Hydraulic Structures (ERDC/CHL CHETN-IX-21) | Calculating Forces on Components of Hydraulic Structures (ERDC/CHL CHETN-IX-21), USACE, 2009]] | |||
{{Document Icon}} [[Earthquake Design and Evaluation of Concrete Hydraulic Structures (EM 1110-2-6053) | Earthquake Design and Evaluation of Concrete Hydraulic Structures (EM 1110-2-6053), USACE, 2007]] | |||
{{Document Icon}} [[Stability Analysis of Concrete Structures (EM 1110-2-2100) | Stability Analysis of Concrete Structures (EM 1110-2-2100), USACE, 2005]] | |||
{{Document Icon}} [[Roller-Compacted Concrete (EM 1110-2-2006) | Roller-Compacted Concrete (EM 1110-2-2006), USACE, 2000]] | |||
{{Document Icon}} [[Gravity Dam Design (EM 1110-2-2200) | Gravity Dam Design (EM 1110-2-2200), USACE, 1995]] | |||
{{Document Icon}} [[Arch Dam Design (EM 1110-2-2201) | Arch Dam Design (EM 1110-2-2201), USACE, 1994]] | |||
{{Document Icon}} [[Lock Gates and Operating Equipment (EM 1110-2-2703) | Lock Gates and Operating Equipment (EM 1110-2-2703), USACE, 1994]] | |||
{{Document Icon}} [[Nonlinear, Incremental Structural Analysis of Massive Concrete Structures (ETL 1110-2-365) | Nonlinear, Incremental Structural Analysis of Massive Concrete Structures (ETL 1110-2-365), USACE, 1994]] | |||
{{Document Icon}} [[Design of Small Dams | Design of Small Dams, USBR, 1987]] | |||
==Trainings== | ==Trainings== | ||
Revision as of 22:58, 14 November 2022
|
| Learn more about the need to consider uplift pressure when designing a gravity structure at DamFailures.org |
There are a variety of forces against which a dam should be designed to adequately resist including but not limited to: self-weight, static water pressures, wave pressures, sediment buildup pressures, uplift water pressures, wind pressures, thermal loads, ice pressures, and earthquake forces. Materials used in the construction of dams include "earth, rock, tailings from mining or milling, concrete, masonry, steel, timber, miscellaneous materials (such as plastic or rubber) and any combination of these materials."[1]
"Design and evaluation of hydraulic structures requires and understanding of the interaction between the flow and the components of the structure. The non-hydrostatic forces generated by the flowing water are of particular interest. Historically, physical models have been the primary means for predicting hydrodynamic forces on hydraulic structures. Laboratory studies of hydraulic loadings require relatively large-scale physical models which are expensive to construct, instrument, and operate. The hydraulic evaluation costs can be decreased if computational methods are used in lieu of such physical models studies. Numerical models capable of calculating hydraulic loads on bridge piers, lock guard walls, culvert valves, tainter valves, floodwalls, and moored ships will result in more cost-effective structural, mechanical, and geotechnical designs."[2]
Required Data
Evaluation Criteria
Types of Analyses
Examples
Learn more about the need to consider uplift pressure (DamFailures.org)
Learn from the critical oversights that led to the failure of St. Francis Dam (DamFailures.org)
Best Practices Resources
Design Standards No. 13: Embankment Dams (Ch. 6 Bulkhead Gates and Stoplogs), USBR, 2018
Strength Design for Reinforced Concrete Hydraulic Structures (EM 1110-2-2104), USACE, 2016
Design Standards No. 13: Embankment Dams (Ch. 13: Seismic Analysis and Design), USBR, 2015
Design of Hydraulic Steel Structures (ETL 1110-2-584), USACE, 2014
Design Standards No. 13: Embankment Dams (Ch. 9 Static Deformation Analysis), USBR, 2011
Design Standards No. 13: Embankment Dams (Ch. 4 Static Stability Analysis), USBR, 2011
Calculating Forces on Components of Hydraulic Structures (ERDC/CHL CHETN-IX-21), USACE, 2009
Earthquake Design and Evaluation of Concrete Hydraulic Structures (EM 1110-2-6053), USACE, 2007
Stability Analysis of Concrete Structures (EM 1110-2-2100), USACE, 2005
Roller-Compacted Concrete (EM 1110-2-2006), USACE, 2000
Gravity Dam Design (EM 1110-2-2200), USACE, 1995
Arch Dam Design (EM 1110-2-2201), USACE, 1994
Lock Gates and Operating Equipment (EM 1110-2-2703), USACE, 1994
Design of Small Dams, USBR, 1987
Trainings
On-Demand Webinar: Rehabilitation of Concrete Dams
On-Demand Webinar: Stability Evaluations of Concrete Dams
On-Demand Webinar: Analysis of Concrete Arch Dams
On-Demand Webinar: Introduction to Concrete Gravity Dams
Citations:
Revision ID: 4150
Revision Date: 11/14/2022