|
PI Co-PI(s)
|
|
| Title
| NEESR II: Mitigating the Risk of Coastal Infrastructure through Understanding Tsunami-Structure Interaction and Modeling
|
| What
| The goal of this project is to model building damage by studying
water flow and debris hazard of collapsed buildings in the flooded
areas. This will help us understand the expected damage to cities
and town and to design buildings to withstand these forces.
As a first step of this new approach, we will focus on residential
(light-frame wood) buildings which make up 90% of the building
stock in the US and are where people spend approximately half of
the hours in their day, Because of the sheer number of residential
buildings in these coastal communities, understanding tsunami
impact on these structures and the expected damage level is
necessary to reduce damage and loss of life.
The goals of this NEESR-II project are to (1) develop a methodology
to assess the risk of residential structures to tsunami inundation
and wave forces through a systematic experimental study coupled
with a numerical probability of failure analysis; (2) enable the
development of innovative retrofit products by developing a
structural testing protocol that is representative of hydraulic
impact/forces during a tsunami; and (3) refine the current
hydraulic force equation in ASCE 7 based on a series of wave basin
tests to account for building density and other variables. This
transformative project builds on the knowledge base of tsunami
inundation at regional scales and the tsunami-structure
understanding at the building scale from other NEESR projects.
This project also integrates new large-scale physical modeling
and numerical modeling efforts to mitigate both structural risk
to building damage and loss of life in a community-wide tsunami
inundation event.
NSF award abstract
|
| When
| Spring 2009
|
| Equipment
| Large Wave Flume
|
|
| PI Co-PI(s)
|
| Patrick Lynett, Texas A&M
Philip Liu, Cornell
|
|
|
|
|
|
| Title
| TSUNAMOS: A Validated, Multi-Scale Tsunami Model for Hybrid Numerical-Experimental
Simulation (Phase III)
|
| What
| The objectives of the proposed research program are to 1) improve understanding of
nearshore, three-dimensional tsunami evolution through an extensive set of physical
experiments using NEES facilities; 2) create an extensible framework to provide a systemat
ic
structure for validating computational models with experimental and field data; 3) refine
modeling capabilities and couple the various components together to create a multi-scale
simulation tool; and 4) develop a sustainable education and outreach program that educate
s
the general public about tsunamis and appropriate responses to them. Nearshore evolution
of
tsunami waves, such as 3D breaking through focusing and bathymetry, and overland flow
across irregular and rough topographies, will be investigated. Concurrent to the experime
ntal
effort, a comprehensive tsunami simulator, TSUNAMOS (Tsunami Open Source Community Model)
,
will be developed.
Phase III, the third and final phase of this project, will begin in May
2009. Based on the results of data analyzed from phase II, researchers will
construct a bathymetry with a significant cross-shore feature, such as a
channel, which will generate strong 3D changes in the flow patterns during
runup and rundown. This feature will be designed to mimic a realistic
shallow water bathymetry irregularities, and will provide insight into the
magnitude of flow variations due to such local features. Free surface maps
will be created, and turbulence information will be extracted from numerous
velocity measurements. In addition, overhead video and dye studies will be
used to visualize flow patterns.
NSF award abstract
|
| When
| Spring, 2009
|
| Equipment
| Tsunami Wave Basin
|
|
| PI
| Ron Riggs, University of Hawaii
|
Co-PI(s)
|
Ian Robertson and Kwok Fai Cheung, U Hawaii
Yin Lu Young, Princeton
Solomon Yim, Oregon State
|
|
|
|
|
|
|
| Title
| HiReef, Phase III
|
| What
| Phase III of the NEESR-SG project to develop Performance Based Tsunami Engineering
(PBTE) will utilize the new tsunami wavemaker in the Large Wave Flume (LWF) to
repeat experiments already performed in the Tsunami Wave Basin (TWB) during phase
II testing. Based on the results of extensive test runs in the TWB from June to
December 2007, selected experiments will be repeated at 2.5 times the scale in the
LWF. This will allow for evaluation of scaling techniques so that both TWB and
LWF test results can be extrapolated to full scale conditions. Tsunami bore
formation and energy dissipation studies will focus on the effect of various bed
profiles applied to the beach slope and flat reef regions. Structural loading
tests will focus on uplift on floor systems and lateral loads on column and wall
elements when struck by a tsunami bore.
NSF award abstract
|
| When
| Summer, 2009
|
| Equipment
| Tsunami Wave Basin
|
|
| PI Co-PI(s)
|
| Patrick Lynett, Texas A&M
Philip Liu, Cornell
|
|
|
|
|
|
| Title
| TSUNAMOS: A Validated, Multi-Scale Tsunami Model for Hybrid Numerical-Experimental
Simulation (Phase II)
|
| What
| The objectives of the proposed research program are to 1) improve understanding of
nearshore, three-dimensional tsunami evolution through an extensive set of physical
experiments using NEES facilities; 2) create an extensible framework to provide a systemat
ic
structure for validating computational models with experimental and field data; 3) refine
modeling capabilities and couple the various components together to create a multi-scale
simulation tool; and 4) develop a sustainable education and outreach program that educate
s
the general public about tsunamis and appropriate responses to them. Nearshore evolution
of
tsunami waves, such as 3D breaking through focusing and bathymetry, and overland flow
across irregular and rough topographies, will be investigated. Concurrent to the experime
ntal
effort, a comprehensive tsunami simulator, TSUNAMOS (Tsunami Open Source Community Model)
,
will be developed.
Phase I took place in the spring of 2007. The purpose of this set of
experiments was to obtain a detailed and dense set of free surface and
velocity measurements for 3D tsunami (long wave) breaking. Breaking will be
induced through wave focusing. There was no bathymetry in the Tsunami Wave
Basin during this phase; it was a flat bottom. Phase II will begin in July 2008 utilizing
a 1:15 to 1:30 beach constructed
in the Tsunami Wave Basin. The roughness type will include both fixed and
movable sand and gravel, stripes and wires (simulating bushes and trees),
and small blocks (simulating small structures in the path of tsunami
inundation). 2HD runup time series will be digitized from overhead cameras,
and the inundation limit will be manually traced after each experimental
trial. These experimental settings will simulate situations closer to what
tsunamis encounter on natural beaches. With this data, accurate bottom
dissipation models will be developed for transient tsunami flow, improving
significantly upon the traditional approach.
NSF award abstract
|
| When
| Jul 1, 2008 - Sept 30, 2008
|
| Equipment
| Tsunami Wave Basin
|
|
| PI Co-PI(s)
|
| John van de Lindt, Colorado State
Rakesh Gupta, Oregon State
|
|
|
|
|
| Title
| SGER NEESR Payload Project to NEESR SG Award CMS-0530759: Leveraging Tsunami Researc
h - Wave Loading on Residential Structures with Earthquake and Hurricane Applications
|
| What
| The objective of this payload proposal is to install typical residential structural
models on the other side of the wave basin during testing in order to investigate impact d
ue to wave loading and run-up, and wind/pressure driven surge. Two single family dwelling
models typical of coastal construction in the U.S. will be installed on a flat surface ab
ove the waterline representing coastal property. Areas impacted by the results include: (1
) information on fluid impact loads as a function of different wave heights and ground slo
pes on residential structures, (2) an understanding of the load transfer mechanism and up
lift forces on residential structures during wave and surge loading, (3) the relationship
of scale model pressure to full-scale prototype damage, and (4) information for designers,
innovators, and public policy and decision-maker.
NSF award abstract
|
| When
| Fall 2007
|
| Equipment
| Tsunami Wave Basin
|
|
| PI
| Ron Riggs, University of Hawaii
|
Co-PI(s)
|
Ian Robertson and Kwok Fai Cheung, U Hawaii
Yin Lu Young, Princeton
Solomon Yim, Oregon State
|
|
|
|
|
|
|
| Title
| Development of Performance-Based Tsunami Engineering, PBTE
|
| What
| The proposed research will develop the methodology and validated simulation tools fo
r implementation of site specific Performance Based Tsunami Engineering (PBTE) for use in
the analysis, evaluation, design and retrofit of coastal structures and facilities, and co
de-compatible provisions for tsunami resistant structural design. Coastal inundation model
ing will be developed to redraft the inundation mapping for the Hawaiian Islands. The anal
ytical simulation tools will be validated through extensive experimentation at the Tsunami
Research facility at OSU. The Tsunami Wave Basin will be used to develop and validate co
astal inundation codes including the influence of coastal plan and bathymetric variations,
and 3-D RANS (Reynolds-Averaged Navier Stokes) simulations of fluid-structure interaction
. The Longitudinal Wave Basin will be used to validate the scour modeling and to study the
effect of floating debris on structural elements.
NSF award abstract
|
| When
| May 13, 2007 - Dec 20, 2007
|
| Equipment
| Tsunami Wave Basin
|
|
| PI Co-PI(s)
|
Philip Liu, Cornell
Solomon Yim, Oregon State
Harry Yeh, Oregon State
|
|
|
|
|
|
| Title
| Collaborative Research on Landslide Generated Tsunamis and Tsunami Structure Interactions using NEES Tsunami Wave Basin
|
| What
| The proposed research program aims at achieving the following scientific objectives: 1. to understand the mechanism of landslide generated tsunamis and the associated runup and rundown, 2. to understand the dynamic interactions among tsunamis, rigid and flexible structures, and moving objects, 3. to improve the modeling capability of complex runup flows within the context of their interactions with flexible and moving objects, and 4. to develop benchmark problems with high quality experimental data for validating numerical simulation models.
NSF award abstract
|
| When
| Phase II - April 15, 2007 - May 11, 2007
|
| Equipment
| Tsunami Wave Basin
|
|
| PI Co-PI(s)
|
| Patrick Lynett, Texas A&M
Philip Liu, Cornell
|
|
|
|
|
|
| Title
| TSUNAMOS: A Validated, Multi-Scale Tsunami Model for Hybrid Numerical-Experimental Simulation
|
| What
| The objectives of the proposed research program are to 1) improve understanding of nearshore, three-dimensional tsunami evolution through an extensive set of physical experiments using NEES facilities; 2) create an extensible framework to provide a systematic structure for validating computational models with experimental and field data; 3) refine modeling capabilities and couple the various components together to create a multi-scale simulation tool; and 4) develop a sustainable education and outreach program that educates the general public about tsunamis and appropriate responses to them. Nearshore evolution of tsunami waves, such as 3D breaking through focusing and bathymetry, and overland flow across irregular and rough topographies, will be investigated. Concurrent to the experimental effort, a comprehensive tsunami simulator, TSUNAMOS (Tsunami Open Source Community Model), will be developed.
Phase I took place in the spring of 2007. The purpose of this set of
experiments was to obtain a detailed and dense set of free surface and
velocity measurements for 3D tsunami (long wave) breaking. Breaking will be
induced through wave focusing. There was no bathymetry in the Tsunami Wave
Basin during this phase; it was a flat bottom.
NSF award abstract
|
| When
| Mar 4, 2007 - Apr 14, 2007
|
| Equipment
| Tsunami Wave Basin
|
|
| PI Co-PI(s)
|
Hermann Fritz, Georgia Tech
Leonid Germanovich, Georgia Tech
Alexander Puzrin, Swiss Federal Institute of Technology Zurich
|
|
|
|
|
|
| Title
| NEESR-SG: Physical modeling of 3D Tsunami Evolution Using a Landslide Tsunami Generator
|
| What
| The ultimate long-term goal is to develop a fundamental understanding of the mechanism of tsunamigenic landslides and subsequent tsunami generation, propagation, and run-up. This would allow for improved assessment and possible mitigation of the landslide and tsunami hazard. The goal of the proposed research is to compensate for lack of real world landslide and tsunami data, by the physical modeling of 3-dimensional tsunami evolution using a novel landslide tsunami generator, which will complement the existing NEES tsunami facility at OSU.. The design parameters for the proposed landslide tsunami generator will be determined using governing model similitude and dimensional analysis of the landslide and tsunami characteristics. The size of the NEES tsunami wave basin will provide the unique opportunity to study scale effects of tsunami generation and propagation based on a non-dimensional scale series.
NSF award abstract
|
| When
| Jun 26, 2006 - Aug 3, 2006; Oct 23, 006 - Dec 22, 2006
|
| Equipment
| Tsunami Wave Basin
|
|
| PI
|
| Yin Lu Young, Princeton
|
|
|
|
| Title
| Pilot Study in support of NEESR-SG: Development of Performance-Based Tsunami
Engineering, PBTE
|
| What
| This pilot study investigated harmonic wave runup on a beach with varying slopes. The wave breaking, bed scour, and sediment transport were also studied. Harmonic waves with a wide range of height and period were generated. The wave height, velocity, and sediment concentration at differential locations near the breaking and runup region were recorded and analyzed for comparison with model results.
NSF award abstract
|
| When
| Oct 30, 2006 - Nov 10, 2006
|
| Equipment
| Large Wave Flume
|
|
| PI Co-PI(s)
|
| Philip Liu, Cornell
Solomon Yim and Harry Yeh, Oregon State
|
|
|
|
|
|
| Title
| Collaborative Research on Landslide Generated Tsunamis and Tsunami Structure Interactions Using NEES Tsunami Wave Basin
|
| What
| The proposed research program aims at achieving the following scientific objectives: 1. to understand the mechanism of landslide generated tsunamis and the associated runup and rundown, 2. to understand the dynamic interactions among tsunamis, rigid and flexible structures, and moving objects, 3. to improve the modeling capability of complex runup flows within the context of their interactions with flexible and moving objects, and 4. to develop benchmark problems with high quality experimental data for validating numerical simulation models.
NSF award abstract
|
| When
| PHASE I - Mar 6, 2006 - Jun 16, 2006
|
| Equipment
| Tsunami Wave Basin
|
|