Company:
Diaz Yourman & Associates
Status:
Awarded
Awarded:
Project of the Year
Additional Files
Additional Information

City of Anaheim stated that deep dynamic compaction saved the project $1 million over conventional foundation/grading options.

Anaheim Regional Transportation Intermodal Center (ARTIC)

Project Location:

Anaheim, California

Project Description:

The Anaheim Regional Transportation Intermodal Center (ARTIC) is a regional transportation facility with iconic architecture.  ARTIC is the first completed California High Speed Rail station!  It is also designed to accommodate current and future Metrolink and Amtrak operations, Orange County Transportation Authority (OCTA) fixed-route buses, Bus Rapid Transit (BRT), Anaheim Resort Transit shuttles/circulators, “Fly-Away” airport shuttles, taxi services, and more.

This project included site work and preparation for the 16-acre property, including demolition of existing structures; relocation of several underground utility lines; iconic ARTIC main terminal building, service yard building, concourse bridge, and rail track/platform work; street improvements, including replacement of the Douglass Road Underpass Bridge, a tunnel connecting Angel Stadium to the Metrolink/Amtrak Station (west end), a tunnel for baggage handling (east end), parking lots, and hardscape/landscape improvements.  DYA was the lead geotechnical consultant for this project. Besides the design services, DYA provided limited construction services. 

Project Justification:

The Main Terminal Building area was underlain by 5 to 25 feet of undocumented fill because of filling of a 1950s quarry.  The project site is also located within a State of California liquefaction zone and some of the subsurface soils below the historically lower groundwater level are subject to liquefaction.  The liquefaction could induce both significant settlement and lateral spreading towards the Santa Ana River.  To mitigate the effects of the undocumented fill and potentially liquefiable soil, deep dynamic compaction (DDC) ground improvement techniques were designed and implemented.  This was the first use of DDC ground improvement for a building in Orange County.  The DDC ground improvement with shallow foundations led to savings of over $1,000,000 compared to other options such as deep foundations.  Savings to the schedule of several weeks were also realized.  Using DDC also resulted in a “green” project because import and export of construction materials was eliminated.  The ARTIC project is designed to earn LEED Platinum certification

In addition, the Douglass Road Underpass Bridge, new pedestrian platforms, pedestrian undercrossings of the railroad, and SR-57 retaining and crash walls had to be completed without affecting existing rail traffic.

The design had to be performed to satisfy the following regulatory agencies: City of Anaheim, County of Orange, Caltrans, Metrolink, and U.S. Army Corps of Engineers.

Special Circumstances:

The DDC option initially was met with skepticism from various stakeholders (adjacent property owners, geotechnical peer reviewer, etc.) because of noise and vibration issues as well as the technical feasibility of reducing liquefaction potential and densifying the undocumented fills.  DYA’s previous DDC design and construction experience combined with published technical papers and federal highway design manuals help convince the stakeholders that DDC was feasible and could result in significant cost and schedule savings. A comprehensive post-DDC-improvement testing program confirmed DYA’s design assumptions.  With the increased density of the existing subgrade soils, liquefaction potential and post-construction settlement of the undocumented fills were minimized and shallow foundations could be used to support the main building.  The adjacent property owners did not have any complaints regarding the DDC.

Project Attachments:

No additional information

Award Citation::

Anaheim Regional Transportation Intermodal Center (ARTIC) is the first California High Speed rail station to be constructed.  ARTIC is planned to serve existing plus future Orange County transportation.  The innovative use of deep dynamic compaction (DDC) ground improvement and shallow foundations saved the city over $1,000,000 compared to other more traditional options.  The ARTIC project is designed to earn LEED Platinum certification

Suggested Award Summary:

The Anaheim Regional Transportation Intermodal Center (ARTIC) is a regional transportation facility with iconic architecture.  ARTIC is the first completed California High Speed Rail station!  It will also accommodate current and future Metrolink and Amtrak operations, Orange County Transportation Authority (OCTA) fixed-route buses, Bus Rapid Transit (BRT), Anaheim Resort Transit shuttles/circulators, “Fly-Away” airport shuttles, taxi services, and more.

The Main Terminal Building area was underlain by 5 to 25 feet of undocumented fill because of filling of a 1950s quarry.  The project site is also located within a State of California liquefaction zone and some of the subsurface soils are subject to liquefaction.  The liquefaction could induce both significant settlement, and lateral spreading towards the Santa Ana River.  To mitigate the effects of the undocumented fill and potentially liquefiable soil, deep dynamic compaction (DDC) ground improvement was designed and implemented.  This was the first use of DDC ground improvement for a building in Anaheim.  The DDC ground improvement with shallow foundations saved over $1,000,000 over other options such as deep foundations.  Schedule savings of several weeks was also realized.  Using DDC also resulted in a “green” project because import and export of construction materials was eliminated.

CEC

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