Collaborative Hydraulics: Advancing to the Next Generation of Engineering C.H.A.N.G.E.

Transcription

1 Collaborative Hydraulics: Advancing to the Next Generation of Engineering C.H.A.N.G.E. Image Sources (left to right): Washington DOT, FHWA Turner Fairbanks Hydraulic Resource Center, Banjo Hangout, Washington DOT Hydraulic Results / Digiglobe World Image and Washington DOT

2 EDC-4 Exciting New Initiative! Time for CHANGE! Collaborative Hydraulics: Advancing to the Next Generation of Engineering

3 EDC CHANGE Team Scott Hogan FHWA Resource Center Hydraulic Engineer Joe Krolak FHWA HQ Principal Hydraulic Engineer Eric Brown FHWA Resource Center Hydraulic Engineer Kornel Kerenyi FHWA Research Hydraulic Engineer Veronica Ghelardi Central Federal Lands Hydraulic Engineer Don Hendon Garver Hydraulic Engineer JR Taylor Montana DOT Hydraulic Engineer Casey Kramer Northwest Hydraulic Consultants Hydraulic Engineer Roger Kilgore Kilgore Consulting & Management Hydraulic Engineer 3

4 Agenda WHAT is Every Day Counts? WHEN is it happening? WHO s Involved? WHERE is it being implemented? WHY this technology? HOW is it being deployed? Case Studies Image Source: Creative Commons - Pixabay 4

5 Every Day Counts (EDC-4) WHAT is it? FHWA Technology Deployment Program Focused on underutilized technology 2-yr program ( ) 4 th cycle of the program CHANGE is 1 of 11 selected technologies (130+ proposals) 5

6 WHAT is CHANGE all about? CHANGE promotes the use of current 2D hydraulic modeling technology that provides a better representation of complex bridge hydraulics, and graphical visualization tools that significantly enhance the ability to communicate results with others Image Source: FHWA/WSDOT

7 WHAT modeling technology and tools are being promoted? SRH-2D USBR two-dimensional hydraulic model Dr. Yong Lai (developer) FHWA/USBR partnership Latest version with hydraulic structures SMS (Surface water Modeling System) Custom graphical user interface Pre- and Post-processing Includes SRH-2D Includes a free community version

8 WHO s involved? (Target Audience) 1. DOT hydraulic engineers and consultants at all levels of experience 2. Other disciplines that use hydraulic data for project delivery 3. Counties and municipalities 4. Resource agencies 5. Floodplain administrators 6. Emergency operations managers Image Source: Openclipart 8

9 WHERE is it being implemented? Image source: FHWA 9

10 WHY this technology and WHY now? Our current 1D modeling technology has been used for more than 50 years Many assumptions are made in1d modeling and it has significant limitations (Especially for Bridge Hydraulics) Technology in other disciplines has advanced Much improved 2D hydraulic modeling technology is now readily available 2D hydraulic modeling is important for complex bridge hydraulics and recommended by FHWA Future scour analyses will depend on advanced modeling 10

11 Future of Hydraulic Modeling and Scour Analysis 11 Image Sources: FHWA

12 WHY SRH-2D? Image Source: FHWA Long history Developed and improved since 2004 Thoroughly tested by Reclamation Robust and stable model Steady and unsteady flows Sub- and supercritical flows Diverse capabilities Multiple boundary conditions Normal/critical depth boundary conditions Internal boundary conditions (source/sink) Bridge pressure flow with overtopping Bridge piers and blocked obstructions Culvert hydraulics Gates and Weirs Depth dependent roughness Sediment Transport 12

13 WHY SMS? (Graphical User Interface) Well established GUI Developed over past 20 years Used by many other models Funded by many sponsors Free community version available Comprehensive Interface Terrain data preparation Data filtering and transformation 2D Mesh development Boundary condition assignment Materials (roughness) definitions Simulation execution Viewing and evaluating results Presentation 2D / 3D graphics and visualizations Subsequent analysis (Floodplain delineation, habitat evaluation, etc.) Image Source: FHWA 13

14 WHY SMS? Advanced analysis tools Create differential surface comparing results HEC-RAS 1D XS import Hydraulic summary tables (for min., max., and avg. of all parameters) Data calculator to compute additional parameters Zonal classification for habitat assessment, floodplain delineation, and more. Summary Table Image Source: FHWA 14

15 WHY SMS? Ongoing feature development Bridge scour evaluation Floodway delineation tool More accurate floodplain delineation and mapping FEMA reference tools Simulation dashboard (multiple simulations and controls) Improved profile graphics 15

16 HOW is this technology being deployed? Training Additional training opportunities Technical assistance Workshops / peer exchanges Online resources Free software and tools Ongoing development 16

17 Training Two-Dimensional Hydraulic Modeling of Rivers at Highway Encroachments (#135095) Upcoming courses o March 6-8, 2018 o March 20-22, 2018 o March 27-29, 2018 o April 17-19, 2018 o May 8-10, 2018 o June 5-7, 2018 o June 12-14, 2018 o July 17-19, 2018 o September 25-27, 2018 San Diego, California Montgomery, Alabama Baton Rouge, Louisiana Boise, Idaho Ames, Iowa Albany, New York Minneapolis, Minnesota Columbus, Ohio Carson City, Nevada Anyone can host a course (select host option from course webpage) Image sources: Creative Commons 17

18 Additional Training Opportunities Online tutorials, videos, and wiki pages FHWA Resource Center 2D Modeling Forum webinars ( to sign up) All are welcome Advanced training Two Web Conference Training (WCT) courses are under development Model review Video tutorials (under development) Available soon Image sources: Creative Commons 18

19 Technical Assistance FHWA Resource Center Support Past project for comparison Upcoming project Appropriate application (table) Review available data Identify model limits Develop 2D mesh and other parameters Run simulation Troubleshoot problems Review results Summarize results When to use 2D Hydraulic Modeling (From HDS-7 Table 4.1) Bridge Hydraulic Condition 1D Modeling 2D Modeling Small streams n 1 In-channel flows n 1 Narrow to moderate-width floodplains n 1 Wide floodplains 1 n Minor floodplain constriction n 1 Highly variable floodplain roughness 1 n Highly sinuous channels 1 n Multiple embankment openings 1r n Low skew roadway (<20 deg) n 1 Moderate skewed roadway 1 n Highly skewed roadway (>30 deg) r n Detailed analysis of bends, confluences, etc. Multiple channels 1 n Small tidal streams and rivers n 1 Large tidal streams and rivers 1 n Large tidal waterways and wind-influenced conditions Detailed flow distribution at bridges 1 n Significant roadway overtopping 1 n r r n n Upstream controls n Countermeasure design 1 n n well suited or primary use 1 possible application or secondary use r possibly unsuitable depending on application 19

20 Workshops/Peer Exchanges Half-day meetings with other disciplines, agencies, states, etc. to present and discuss: Applications of 2D modeling Benefits of 2D modeling and graphical results Communication and presentation opportunities Barriers to using 2D modeling Submittal requirements for permits Other questions Image sources: Creative Commons 20

21 Online Resources 2D hydraulic modeling tutorials and videos SMS/SRH-2D User s guide Sharepoint Site (under construction) change/sitepages/home.aspx. Requires registration General information source EDC CHANGE deliverables schedule Discussion forum 2D modeling guidance and reference information Much more. 21

22 Ongoing Development Guidance documents for 2D bridge and floodplain modeling Guidance for developing and reviewing 2D hydraulic modeling analyses and reports Scoping and policy guidance for state DOTs Improved online User s Guide Webinars demonstrating successful practices Workshops and peer exchanges Validation of 2D hydraulic model results Example applications (case studies) Advanced training Interagency collaboration Image sources: Creative Commons 22

23 Software and Tools SRH-2D/SMS Free pro version available to all DOT/FHWA staff Free community version available for others Free pro version reviewers license available Requesting a License Via SMS Help Menu (Register / Change Registration/Request Evaluation) Via web link: 23

24 Case Studies Image Sources (left to right): Washington DOT, FHWA Turner Fairbanks Hydraulic Resource Center, Banjo Hangout, Washington DOT Hydraulic Results / Digiglobe World Image and Washington DOT 24

25 Leaf River, MS Scour Evaluation 460 Bridge Constructed in Continuous Span ( Bank Protection Structure Constructed in 1976 Bank Protection Structure (Reports of Heavy Debris) Multiple Openings 1D and 2D Models Generated 25

26 Leaf River MS (cont.) 1978 FHWA/USGS report 100-Year Storm in 1974 At least 90 of Recession on Left (East) Bank Determined 8 of Penetration Remained for Piles (Bent 2) 26

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28 Leaf River at SR 28 (cont.) 28

29 Leaf River at SR 28 (cont.) 29

30 30

31 Leaf River 2D Mesh/1D Cross Sections 31

32 Leaf River Comparison 2D/1D 1D Bridge Section Approach Section Upstream Face Downstream Face HEC-RAS River Station 100-Year Computations WSEL (ft) V avg (ft/s) V channel (ft/s) 500-Year Computations WSEL (ft) V avg (ft/s) V channel (ft/s) BR U BR D Exit Section D Bridge Section Approach Section Upstream Face Downstream Face HEC-RAS River Station 100-Year Computations WSEL (ft) V avg (ft/s) V channel (ft/s) 500-Year Computations WSEL (ft) V avg (ft/s) V channel (ft/s) BR U BR D Exit Section

33 Elevation (ft) Leaf River Comparison 2D/1D WSE 270 Road/Bridge Profile Distance (ft) Road Elevation (ft) Water Elevation (ft) 33

34 Sugar Creek, MS Stream Instability Countermeasures/Bridge Design 34

35 Sugar Creek, MS 35

36 Sugar Creek, MS 36

37 Original Proposed Configuration 37

38 Skewed 45 38

39 Better Solution! 39

40 Benefits of the Better Solution Shorten Bridge by 35 Eliminate Interior Bents Utilizing Florida I-Beams Lowers WSE Elevation by ½ Velocities Reduced Significantly 40

41 Shell Creek, NE Floodplain Analysis and Design Image Source: Nebraska Department of Roads 41

42 Shell Creek, NE Floodplain Analysis and Design Road / Bridge Profile (view downstream) Water Elevation (ft) Ground Elevation (ft) Image Source: Earthstar Graphics (Aerial Image) 42

43 Shell Creek, NE Floodplain Analysis and Design Image Source: Earthstar Graphics (Aerial Image) 43

44 Dungeness River, WA Bridge Maintenance and Repair Image Source: Washington State DOT / Earthstar Graphics (Aerial Image) 44

45 Dungeness River, WA Bridge Maintenance and Repair 2D water surface 1D water surface Image Source: FHWA Resource Center 45

46 Dungeness River, WA Bridge Maintenance and Repair 46 Image Source: Washington State DOT / Earthstar Graphics (Aerial Image)

47 Skagit River, WA Avoidance of Habitat Impacts Difference in Velocities with Redd Locations Image Source: Washington State DOT 47

48 Big Thompson River, CO Streamlined Bank Protection Design Riprap Size Red = 4 ft D50 or more Yellow = 3 ft D50 Green = 2 ft D50 Blue = 1 ft D50 or less Image Sources: USGS / Earthstar Graphics (Aerial Image) 48

49 Mobile, AL Climate Change Impact Assessment Image Source: FHWA 49

50 Pearl River, MS SRH-2D/RAS2D Comparison 50

51 SMS/SRH-2D Mesh at US 98 Bridge 51

52 Modeling Bridges Representation of Bridge Piers in TIN 52

53 Results of Study (ongoing) HEC-RAS and SRH-2D results were by different approximately 1 foot SRH-2D model matched observed WSEL results closer than HEC-RAS model did Neither model was calibrated to even the comparison Further investigation is underway to pinpoint the reason(s) for the differences between models SRH-2D model was recommended to evaluate proposed alternatives SRH-2D was confirmed as the preferred software for future MDOT 2D modeling studies 53

54 Thank you! Donald L. Hendon, PE, CFM Garver Jackson, MS (601)