Construction—North America—USA—Bridges
Photos reprinted courtesy of Trumbull Corporation, USA
Furthermore, the interface between the
delta frame base plate and the grout pad
had to be sealed against moisture intrusion.
DSI developed a groutable system meeting
both the owner’s requirements for durability
and satisfying requirements in terms of
installation. The DYWIDAG Bar Tendons were
required to be stressed to approximately 72%
of their ultimate strength, after the setting of
the knuckle (at the bottom of the delta), but
before the rest of the delta frame was erected.
In a true partnering approach, the contractor
and DSI worked together and finalized an
anchorage system using 46 and 65mm Ø
DYWIDAG Bar Tendons. In order to eliminate
the complicated site assembly requirements
for tendons, DSI proposed a preassembled,
pick and place tendon system that could be
flexibly used, thus saving the contractor time
and labor.
The DYWIDAG Bar Tendons were assembled
including all accessories in DSI Construction
USA’s Bolingbrook facility and then sent to the
jobsite. In total, 300 46mm Ø DYWIDAG Bar
Tendons with a total weight of 12t and 680
66mm Ø DYWIDAG Bar Tendons with a total
weight of 53t were needed. The contractor
placed the DYWIDAG Tendons in a jig held by
setting templates at both top and bottom that
was used to fly the tendons into place.
Owner
Ohio Department of
Transportation (ODOT), USA
General Contractor
Trumbull-Great Lakes-Ruhlin a
Joint Venture, consisting of Trumbull
Corporation, The Great Lakes
Construction Company and The
Ruhlin Company, all of them USA
Architect
Touchstone Architecture, USA
Consulting Engineers
URS Corporation, An AECOM Company,
USA
DSI Unit
DYWIDAG-Systems International USA Inc.,
BU Post-Tensioning, East, USA
DSI Scope
Development, production, supply, technical
support
DYWIDAG Products
300 46mm Ø DYWIDAG Bar Tendons, 12t and
680 66mm Ø DYWIDAG Bar Tendons, 53t
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