Dam Control Valve Design in Avignon, France

Structures Analyzed with Dlubal Software

  • Customer project

Customer Project

This hydraulic dam project, located in the Provence-Alpes-Côte d'Azur region (PACA), included design consideration for the control valve’s rotational axis deformation, maximum stress, and material fatigue behavior.

Owner Moscatelli Group, France
www.groupe-moscatelli.com
Structural Design AGICEA, France
www.agicea-bureau-etudes.fr

Trunnion Model Data

Model

A control valve is used to regulate the water flow between the dam’s high and low levels by allowing water to drain from the reservoir. A large single-unit steel element is used.

The complete valve was initially designed by the Moscatelli company, which supplied the 3D trunnion file in STEP format to a Dlubal customer, AGICEA.

Technical Details and Shear Load Determination

Each trunnion consists of a clevis (machine-welded assembly) that includes mixed sintered bronze-graphite alloy guide supports. These supports make it possible to rotate a continuously round 7.87 in diameter axis without additional lubrication. The assembly consists of a stainless steel alloy with strong material properties (high elasticity and rupture limit).

For the trunnion, the hydraulic compression load to be applied to the central axis was determined.

A load of 138.8 t corresponding to the hydraulic shear force generated on one of the two rotating arms was then applied in the FEA structural analysis software (RFEM). The load was converted to a surface force distributed over half the axis area. The total surface shear force calculated was 291,560.6 psf.

Deformation Design

After modeling the mechanical assembly as a solid (3D finite element), AGICEA reviewed the total deformations of each subgroup, including:
• Bronze and graphite supports
• 7.87 in diameter central axis
• Clevis

Afterwards, the equivalent stresses (Von Mises) were analyzed to avoid high stress peaks. These values were compared to the allowable material limit values.

Fatigue Design

Fatigue designs according to EN 1993-1-9 were also carried out. AGICEA developed a macro to automatically find maximum stresses (equivalent, tensile, and shear stresses) at locations prone to cracking. The entire trunnion was designed for 438,000 cycles, which corresponds to one movement per hour throughout the year over a period of 50 years.

Project Location

Avignon, France

Keywords

Valve Control valve Hydraulic dam

Write Comment...

Write Comment...

  • Views 1155x
  • Updated 08/30/2021

Contact us

Contact Dlubal

Do you have questions or need advice?
Contact our free e-mail, chat, or forum support or find various suggested solutions and useful tips on our FAQ page.

(267) 702-2815

info-us@dlubal.com

Event Invitation

2022 NASCC: The Steel Conference

Conference 03/23/2022 - 03/25/2022

Event Invitation

International Mass Timber Conference

Conference 04/12/2022 - 04/14/2022

Event Invitation

Structures Congress 2022

Conference 04/21/2022 - 04/22/2022

Effective BIM Workflows Between RSTAB and RFEM and IDEA StatiCa

Effective BIM Workflows Between RSTAB & RFEM and IDEA StatiCa

Webinar 08/05/2021 11:00 AM - 12:00 PM CEST

Glass Design with Dlubal Software

Glass Design with Dlubal Software

Webinar 06/08/2021 2:00 PM - 2:45 PM CEST

Blast Time History Analysis in RFEM

Blast Time History Analysis in RFEM

Webinar 05/13/2021 2:00 PM - 3:00 PM EDT

Timber structures | Part 2: Design

Timber Beam and Surface Structures | Part 2: Design

Webinar 05/11/2021 2:00 PM - 3:00 PM CEST

Plate and Shell Buckling Utilizing Dlubal Software

Plate and Shell Buckling Utilizing Dlubal Software

Webinar 03/30/2021 2:00 PM - 2:45 PM CEST

CSA S16:19 Steel Design in RFEM

CSA S16:19 Steel Design in RFEM

Webinar 03/10/2021 2:00 PM - 3:00 PM EDT

The Most Common User Errors With RFEM and RSTAB

The Most Common User Errors With RFEM and RSTAB

Webinar 02/04/2021 2:00 PM - 3:00 PM BST

ADM 2020 Member Design in RFEM

ADM 2020 Member Design in RFEM

Webinar 01/19/2021 2:00 PM - 3:00 PM EDT

Dlubal Info Day

Dlubal Info Day Online | December 15, 2020

Webinar 12/15/2020 9:00 AM - 4:00 PM BST

FEA Troubleshooting and Optimization in RFEM

FEA Troubleshooting and Optimization in RFEM

Webinar 11/11/2020 2:00 PM - 3:00 PM EDT

Soil-Structure Interaction in RFEM

Soil-Structure Interaction in RFEM

Webinar 10/27/2020 2:00 PM - 2:45 PM BST

NBC 2015 Modal Response Spectrum Analysis in RFEM

NBC 2015 Modal Response Spectrum Analysis in RFEM

Webinar 09/30/2020 2:00 PM - 3:00 PM EDT

Documenting Results in the RFEM Printout Report

Webinar 08/25/2020 2:00 PM - 2:45 PM CEST

ACI 318-19 Concrete Design in RFEM

ACI 318-19 Concrete Design in RFEM

Webinar 08/20/2020 2:00 PM - 3:00 PM EDT

How to Be More Productive Using RFEM

How to Be More Productive Using RFEM

Webinar 07/07/2020 3:00 PM - 4:00 PM CEST