Tag Archives: Deep Foundations

DBA on successful St. Louis Bridge team

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DBA is on the successful team that was awarded the contract for the new Mississippi River Bridge in St. Louis, Missouri.  The project is a joint project of MoDOT/IDOT with MoDOT being the lead agency.  HNTB is the lead bridge designer for the new cable-stayed bridge carrying I-70 over the river.  The bridge is one part of a larger project that also includes the Missouri North I-70 Interchange, the Illinois I-70 Connection, and the Illinois Tri-level Exchange.

From the project web site:

The $640 million Mississippi River Bridge project is proceeding through design, with construction scheduled to start in early 2010. The new Mississippi River Bridge is the first bridge built connecting downtown St. Louis and southwestern Illinois in more than 40 years. Currently, the only urban interstate bridge between Illinois and Missouri is the Poplar Street Bridge, known locally as the PSB. The PSB is one of two bridges in the United States that carry three interstates. By relocating one interstate (I-70) from the Poplar Street Bridge to the new Mississippi River Bridge, drivers will experience less congestion, fewer crashes and less unnecessary fuel use.

The new Mississippi River Bridge will be a 1,500 foot cable-stayed bridge across the Mississippi River between Metro East and St. Louis, Missouri. The bridge is two lanes in each direction, but is wide enough to be restriped for three lanes in each direction if traffic volumes warrant and additional funding is secured. In addition, the bridge project includes approaches on the Illinois and Missouri sides to get traffic to the bridge.

The wining contractor team is Massman/Traylor Brothers/Alberici Constructors.  DBA’s role was to help prepare an alternate concept for the drilled shaft foundation design which will include load test measurements.  We anticipate construction to begin in March with load test shaft.

An overview of the bridge is here.  The press release for the award of the main bridge is here.

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Characterization of Loess for Deep Foundations

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I have added a recent paper that Dan and Steve contributed to concerning loess that is in the November, 2009 issue of the DFI Journal.  The paper describes the results of site investigation and laboratory tests at a site in Kansas with loess deposits.  The effectiveness of various correlations between field and laboratory tests and design properties are evaluated.  Steve is currently working on the follow-up paper that evaluates lateral load tests of drilled shafts at the site.

Parson, R.L., Johnson, R.M., Brown, D.A., Dapp, S.D., and Brennan, J.J., 2009. “Characterization of Loess for Deep Foundations”, DFI Journal Volume 3, No. 2, November 2009, Deep Foundations Institute, pp14-24.

Tim Siegel, P.E. joins DBA!

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DBA is growing again with the addition of Tim Siegel, P.E. to our team! 

Tim has been primarily involved in the analysis and design of geotechnical structures including drilled shafts, cast-in-place piles, micropiles, and earth retention systems.  Tim is a Georgia Tech grad (like Dan!) and has worked most of his career since at S&ME and Berkel & Company Contractors, Inc. During his 12 years with S&ME, he advanced from Geotechnical Engineer to Technical Principal and Chief Engineer while developing expertise in construction in karst, seismic design, numerical modeling, and specialty foundations and retaining systems.  After leaving S&ME, he was a Senior Geotechnical Engineer with Berkel and was involved in large deep foundation projects all over the United States. While at Berkel, he led the development of the ground improvement technique using Berkel’s ground displacement technology. While at S&ME and then while at Berkel, he taught upper level and graduate level courses while on the faculty of the University of Tennessee.  Tim’s resume can be found in the About US section of our site.

We are really glad to have Tim joining us.  As you can see by his photo, he has the requisite hair style!

Events Calendar Updated for 2010

 

I have updated our calendar for 2010 to include many events in the geotechnical and foundation engineering world that may be of interest, plus known speaking/teaching appearances by Dan.  I’ll put in a plug for the events calendars and listings for ADSC, DFI, Geo-Institute, and PDCA.  I get most of my information from them.

 

Some, but not all events,(in addition to my previous post) are:

 

DFI Helical Foundations & Tiebacks Specialty Seminar – Feb 1

 

geo_header_2009    Geo-Florida 2010 – Feb 20-24

 

DFI and PDCA – A Joint Conference on Driven Pile – Mar 12

 

adsc_logo_color_small1 ADSC Drilled Shaft Foundations Seminar – Mar 19

 

PDCALogo PDCA 14th Annual International Conference and Expo – May 6-8

 

2nd International Symposium on Cone Penetration Testing – May 9-11

 

bridge-home-template_r1_c6_sm International Bridge Conference 2010 – June 6-10

 

DFI Super Pile – June 10-11

 

er2010_header_002 Earth Retention 2010 – Aug 1-4

 

DFILogo DFI 34th Annual Conference on Deep Foundations – Oct 12-15 

 

5c24ff58c9bf4a5f988f0f34e0266ffc TRB 7th International Bridge Conference – Dec 1-2

Video: Lateral Load Test with Statnamic Device

One area of work we are frequently involved in is data analysis and evaluation of lateral load tests performed by the Statnamic testing device (learn more at the website of Applied Foundation Testing).  The mathematics involved in the data reduction can be quite formidable as you interpret the dynamic load-response to an equivalent static load-response.  Regardless of the math behind it, watching a test can be pretty cool.  It is a whole lot of work for a brief moment of load, but in some situations it can be more economical than a traditional load test. 

The video below is from a test on 170-foot long, 32-inch outside diameter steel pipe pile with 0.75"-inch wall thickness.  The pile was filled with concrete that included an instrumented rebar cage.

Enjoy!

More Drilled Shaft photos at Huey P. Long Bridge

Steve just can’t get enough of the state of Louisiana.  Now that the Audubon Bridge foundations are complete, he needed an excuse to get back and found himself in the Crescent City observing production shaft base grouting at the Huey P. Long Bridge project.  Here area few more good construction photos to supplement my previous post.

Here is an interesting story in the New Orleans Times-Picayune about the bridge project explaining how they are widening the bridge.

Foundation Work is Finished at Audubon Bridge!!!

Yes, you read that right – the last drilled shaft has been installed on the John James Audubon Bridge near New Road, Louisiana.  The project has been quite an adventure for us, especially Steve.  He spent the most time on the site during shaft excavation, tip grouting, load testing, and even pile driving.  Robert got to spend a fair amount of time, too, over the last couple of years.  Paul was even lucky enough to make a couple of trips.

The shaft construction was concluded with one last O-cell test on Shaft 3W South.  Dan was present for the last load test which went fabulously well.

If you are going to the Geo-Institute congress GeoForida 2010 next February in West Palm Beach, you can hear Steve present the paper he and Dan wrote on the tip grouting and load test program.

The bridge is still under construction, of course, and will be an awesome structure when completed.  It was an exciting project for us to be a part of the team.  We’ll have a project summary posted in the near future to highlight the details of the foundations.  For now, you will have to be satisfied with the slideshows below (in reverse chronological order) from some of our visits this summer and fall.

Load Test at Shaft 3W South – October 2009

Excavation of Shaft 3W South – September 2009

Shaft Grouting and other Construction – June 2009

Shaft Excavation, Pile Driving, and Cofferdams – May 2009

kcICON Bridge Paper Added

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I have added the paper that we wrote and Dan presented at the Deep Foundations Institute 34th Annual Conference on Deep Foundations that was held in Kansas City, MO late last month.  The paper highlights how the design-build process was successful in the design and construction of the large diameter drilled shafts supporting the bridge.  We discuss the installation methods used, the load test program, and how we evaluated the durability of the shale rock sockets under drilling fluid.

You can check out the progress of the bridge at the project website.

Axtell, P.J., Thompson, W.R., and Brown, D.A., 2009. “Drilled Shaft Foundations for the kcICON Missouri River Bridge”, Deep Foundations Institute 34th Annual Conference on Deep Foundations, Conference Proceedings 2009, October 21-23, 2009, Kansas City, Missouri, pp. 3-12.

 

Recent Project Photos – (or) What have we been up to the last few months (Part 2)?……Driven Piles!

Who says we only work on drilled shafts??  Robert had the opportunity to work for Kiewit Engineering Company providing geotechnical engineering support to Gulf Intracoastal Constructors (GIC), a joint venture of Kiewit and Traylor Brothers on the  Gulf Intracoastal Waterway West Closure Project near Belle Chase, Louisiana.  The project is part of the overall flood protection system improvements that are supposed to protect New Orleans from future hurricanes.  The key components of this particular project are a massive gate and pump station across the Gulf Intracoastal Waterway.  Go For more information on the project, go here, here, and here (video from Corps of Engineers).

Robert spent a good part of the summer in New Orleans doing a variety of geotechnical engineering tasks to support the construction efforts of GIC.  The main thing he worked on was the test pile program.  The project included a massive test pile program with 24 test piles spread among 5 test sites with various combinations of dynamic, static axial, static tension, and static lateral tests.  The piles were mostly open-ended steel pipe piles varying from 18” to 54” in diameter.  A few 18” x 18” pre-stressed precast concrete piles were also thrown in for good measure.   In addition to performing drivability studies and evaluating tests data, Robert got to spend some time in the wonderful June and July weather in southern Louisiana on the site observing pile installation and testing.  And as always, he came back with a lot of pictures.  Here are a few to enjoy.

Recent Project Photos – (or) What have we been up to the last few months (Part 1)?…… Drilled Shafts!

If you frequent this blog, you have noticed that posts have been rare the last few months.  That is mostly to my being in the field a lot this summer and very busy on lost of projects.  While that is good, it meant I did not have time for updates.  Below are some slide shows from a few drilled shaft projects we worked on this summer.

 

Garden State Parkway Mullica River Bridge, New Jersey – Test Shaft Installation

Paul took a trip to lovely New Jersey to observe a large diameter test shaft on the Mullica River Bridge.  DBA worked as a consultant for Parsons Brinckerhoff on an 8-foot diameter, 220-foot deep test shaft.  CASE was the drilled shaft contractor and Agate was the general contractor.  DBA consulted on the design of the test shaft program, as well as the use of Self Consolidating Concrete (SCC).

 

 

Drilled Shaft Lateral Load Test Research with the University of Kansas

Paul took a ride out west to Kansas City, Kansas (close to home!) to observe a drilled shaft lateral load test in Wyandotte County, near the Cabela’s store on I-435.  The test is part of ongoing research by the University of Kansas for the Kansas DOT.   DBA was involved in previous research concerning laterally loaded shafts behind MSE walls (see previous post, click here for more information on the project).  This research continues on the same theme of investigating the behavior of laterally loaded shafts socketed into the sedimentary rocks in eastern Kansas.  DBA does not have an active role in this project, just an academic interest. 

 

 

 

Huey P. Long Bridge Improvements, New Orleans, Louisiana – Test Shaft Installation

The Huey P. Long Bridge in New Orleans (built in the 1930s) is undergoing a major rehab and expansion.  The vehicle traffic will increase from 2 9-foot lanes in each direction to 3 11-foot lanes in each direction.  This is a very interesting combined highway and railroad bridge with a fascinating history.  The bridge is actually a private bridge owned by the New Orleans Public Belt Railway (click the link to see some cool photos from the construction of the bridge in the 1930s). The project website is here. 

DBA was consulting with the joint venture building the bridge for the base-grouted drilled shafts under one new pier.  A test-shaft was built and tested with O-cells.  Robert was on site while they excavated the test shaft.  Steve was on site during grouting.