Encardio-rite sensors have been used in a number of
bridge application for long term performance and safety
monitoring and for short term behavior under traffic
loading. The parameters generally monitored are strain,
stress, load, displacement, deflection, tilt, settlement, temperature,
etc.
Sensors are
installed permanently for long-term monitoring and
safety monitoring. The data acquisition system helps in automatic
monitoring and storage of readings. It ensure that any significant change in the condition
or behavior of the structure is logged and reported.
Sensors are also installed temporarily for load testing or to
ensure safe working conditions during repair or
strengthening.
For further details
please refer to our application note on instrumentation
of bridges. The
application note gives an idea about purpose and type
of instrumentation used. It also includes a case study
of Narmada Bridge instrumented by Encardio-rite.
Some bridge projects, instrumented by Encardio-rite are
listed below:
2nd Bridge on Narmada
river at Zadeshwar on NH 8 in Gujarat, India
Project includes a 1.4 km long segmental balanced
cantilever type bridge, along with 4.6 km of approach
roads. The project was executed by were L & T and
consultants were Dar Consultants, UK.
Chiraiyatand Bridge,
Patna, India
The cable-stayed bridge is the second of its kind in
the country and is being constructed with German
technology jointly by the Bihar State Bridge
Construction Corporation and IRCON. The bridge is around
110 m long and 20 m wide.
Naini bridge,
Allahabad/Naini, India
The project involves construction of a 630 m cable stayed bridge across river Yamuna, 3.913 km long
approach along new alignment of NH 27 and an under pass
at the crossing of proposed road alignment with the
existing railway line. This cable-stayed bridge is the
India’s biggest bridge of its kind. It is used as a
roadway link between Allahabad and NH27. Owners of the
project are National Highways Authority of India (NHAI).
Contractors are JV HCC / Hyundai, Consulting engineers
are JV KOWI-SPAN/NHAI
Jaipur Kishangarh NH-8
Expressway Road Project
A six-lane expressway between Jaipur and Kishangarh
on National Highway 8 (NH-8) was constructed through an
SPV - GVK Jaipur-Kishangarh Expressway Ltd. The project
involved construction of 90.4 KM of six-lane highway
with flyovers and interchanges at major junctions. This
is the largest six-lane BOT road project implemented by
NHAI in India. The consultants for this project are
French Engineering Consultants.
Second Vivekanand
Bridge Tollway Project, Kolkata
The project includes 880 m long 31.1 m wide cable
stayed bridge and six-lane approaches on both sides with
ramps. The Second Vivekananda Bridge is the first of its
kind in the country as there is only one plane of cables
holding up the 880 m bridge along the central median.
The project is under the SVBTC (Second Vivekananda
Bridge Tollway Company Pvt. Ltd) & NHAI (National
Highway Authority of India). The Contractors for the
project are L & T ECC Div
Allahabad Bypass
Bridge Project (Ganga Bridge Project)
The Allahabad Bypass Project is basically divided
into three construction packages comprising one
exclusive bridge package over the Ganga River of about
1.0 km in length and two 4-lane road construction
packages in aggregate length of 87 km. Road packages
include the construction of embankment/elevated
structures, rigid pavement, minor bridges and other
appurtenances. The Bridge package has two independent
parallel bridges each accommodating a 7.5 m wide two lane
carriageway and a 1.5 m wide pedestrian foot path. The
bridges are located at a clear distance of 12 m to
facilitate independent well sinking for the two bridges.
The span arrangement consists of two 6 span continuous
units in
each bridge. Contractors for the project are L&T ECC Division and The
Freyssinet Prestressed Concrete Co. Ltd.
Instrumentation used in these projects included: