Get the New FHWA Drilled Shaft Manual
Get the NCHRP Synthesis 418 – Pile Criteria From Test Pile Data
Dan’s Speaking Schedule March 16, 2012 - "Advanced" Design and Construction Issues with Drilled Shaft Foundations; Case Histories - ADSC Equipment EXPO and Technical Conference - San Antonio, Texas
March 26-28, 2012 - State of the Art and Practice for Drilled Foundations - GeoCongress 2012 - ASCE/Geo-Institute - San Francisco, California
Other DBA Team Speaking Appearences Tim Siegel (January 22, 2012): Innovative Techniques for Characterizing Karst Terrain, Workshop on Geo-innovation in Subsurface Exploration, TRB Annual Meeting, Washington, D.C.
John Turner and Robert Thompson (February 21-23, 2012): NHI Drilled Shaft Course - Kansas DOT, Topeka, Kansas
Robert Thompson (February 24, 2012): Conservatism in Drilled Shaft Design When
Utilizing Rock Sockets, Alabama Transportation Conference, Montgomery, Alabama
Tim Siegel (March 15, 2012): Micropile Design Installation and Performance for the Foothills Parkway, ADSC Equipment EXPO and Technical Conference, San Antonio, Texas
Robert Thompson (March 15, 2012): Full-Scale Load Tests on Drilled Shafts in Tennessee and Georgia, ADSC Equipment EXPO and Technical Conference, San Antonio, Texas
Erik Loehr (March 15, 2012): Slope Stabilization Using Micropiles, ADSC Equipment EXPO and Technical Conference, San Antonio, Texas
TBA (April 10-12, 2012): NHI Drilled Shaft Course - South Carolina DOT, Columbia, South Carolina
Conferences, Meetings, Seminars, Workshops
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kcICON Moving Forward – Test Shaft Installation
By Robert Thompson, on June 17th, 2008
I have been slow in posting on the progress of our part in the kcICON project (see here for background and here for latest project images by MoDOT). The exploratory drilling went very well with a short pause due to ice in the river in late January. The crews from Terracon did an outstanding job getting the borings completed, overcoming the occasional problems with drilling tools deciding they did not want to come out of the hole.
Design work by Parsons on the main bridge proceeded (and is still ongoing) through the rest of winter and into the spring. In late April, PCC installed the test shaft in the middle of the pylon foundation with a 6-foot diameter rock socket 20 feet long. The shaft was tested using a group of 3 O-cells placed near the bottom of the shaft. The test yielded excellent results in both side shear and end bearing in the shale socket. Look for us to include the results in a future technical paper or journal article.
Design is continuing with the pylon shafts anticipated to be started in early July. The abutments and approach piers are schedule to be started later this summer or early fall.
The slide show embedded below has some photos of the exploratory drilling and the test shaft installation. Enjoy!
Technorati : Bridge Foundations, Deep Foundations, Drilled Shafts, Foundation Construction, Foundations, Geotechnical Engineering, Load Test, Test Shaft
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