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DLC Laying (Dry Lean Concrete) Process and specification as per MORTH in Hindi #nhai #viral LINK~ • DLC Laying (Dry Lean C...
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Iconic Krishna Bridge On NH167K Connecting Telangana & Andhra Pradesh #pragatikahighway #gatishakti LINK~ • Iconic Krishna Bridge ...
CHALLENGING TASK FOR CIVIL ENGINEER (STRUCTURE)
Since time immemorial, mankind has been using
various techniques to cross the rivers, streams or any depression
without closing or obstructing the original flow through a
structure called bridge. With the span of time and advancements
in civil engineering, several types of bridges have come into
existence like wooden, steel, masonry arches, RCC and
prestressed concrete bridges. Indian Roads Congress categorizes
three types of the bridges on the basis of length i.e. culverts up to
6.0 m, minor bridges above 6.0 m to maximum 60.0 m length and
major bridges above 60.0 m. In present scenario, minor bridges
over small rivers has become necessary for development and
prosperity of nation as most of the roads have to cross small
rivers at several places to connect remotest corner of the country.
Bridges, though a man made structure, over a period of time
become an important part of environment because in most of the
cases water flowing below is used for drinking, irrigation and
underground recharging. The alluvial region of India spread
from Punjab to West Bengal has a peculiar nature because soil is
almost soft in nature consisting of mainly sand, clay and silt
which is fertile for vegetation. Water retention and its movement
condition are high throughout the year. Several type of water
bodies which exists in this type of region are pond, small drain,
small and medium rivers which drains into the big rivers like
Ganga, Yamuna, Ghahgra, Gomti and Sai etc.
Since long time, road system on the earthen track and pucca road
has been introduced for traffic like chart, chariot and motorised
vehicle. There were little number of bridges over major rivers i.e.
bridge alone to cross over the river Ganga except in few places
like Allahabad, Kanpur and Varanasi and over the Ghaghra
Algine bridge, Maghighat, Bhatni. Some bridges were
constructed over small and medium rivers in medieval period by
local rulers and business men which have now become obsolete.
It is found that most of the bridges are of masonry arches wooden
and trusses having insufficient water and carriage way.
After independence, the road network system has been improved
to meet out socio economic needs of people. The new bridges
have been constructed with standard road width and sufficient
water way. Study has been conducted for existing new
constructed bridge system over small river and alluvial region of
Uttar Pradesh to set guidance for future course of action in
replacing and providing new bridges to optimize the needs of the
people.
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