Construction—EMEA—Qatar—Bridges
DYWIDAG Strand Tendons stabilize multi-level Interchange in Qatar:
The North Road Enhancement Project
The national road network in Qatar was mainly built with roads consisting of
1 or 2 lanes in the 1970s and 80s. Within the last few years, traffic has greatly
increased, which has led to ever-increasing traffic loads. As a preparatory measure
for the 2022 FIFA World Cup, the government has therefore started a large scale
program for expanding its road network.
This program includes the expansion of the
North Road, the main connection between
Doha and the north of the country, from 2 to
4 lanes per direction. The North Road has a
total length of 95.2km, connecting Doha to
Madinat Al Shamal on Qatar’s North Coast.
A large number of new interchanges, flyovers,
undergrade crossings and roads are built for
the expansion.
In package P059, several large, multi-level
interchanges, bridges and flyovers are being
built. The post-tensioning systems for the
bridge structures with a total of 3,700t of
128
strand tendons were supplied and installed
by DSI Middle East, Qatar (formerly QACS)
and DYWIDAG-Systems International GmbH,
GBU, Germany. A total of 1,000 sets of Type
MA 6837 Anchorages were required for the
tendons. According to the specifications
applicable in Qatar, the tendons were inserted
in 80,000m of HD-PP plastic ducts.
DSI also supplied the equipment required
for the installation, stressing and grouting of
the DYWIDAG Strand Tendons, including
stressing jacks with a capacity of 9,750kN
(approx. 1,000t).
Owner
Ashghal – Public Works Authority,
Qatar
General Contractor
Tekfen Construction and Installation Co.,
Inc., Turkey
Consulting Engineers
KBR, Inc., Great Britain
Consulting
KEO International Consultants, Great Britain
Subcontractor
DSI Middle East, Qatar (formerly QACS)
DSI Units
DSI Middle East, Qatar (formerly QACS) and
DYWIDAG-Systems International GmbH, GBU,
Germany
DSI Scope
Production, supply, installation, engineering
services, technical support, supervision
DYWIDAG Products
DYWIDAG Strand Tendons with 1,000 Type MA
6837 Anchorages