ANALYSIS OF PRESTRESSED CONCRETE BRIDGE I-GIRDER IN MIDAS
Author(s):
T.L.Abitha, Dr.S.Sundhari
Keywords:
Midas civil, I-girder, Deck, IRC standards
Abstract
The concept of pre-stressed concrete appeared in the year 1888. In this present engineering technology, durable and sustainable bridges play an important role for the socio-economic development of the nation. Owners and designers have long recognized the low initial cost, low maintenance needs and long life expectancy of pre-stressed concrete bridges. This is reflected in the increasing market share of pre-stressed concrete, which has grown from zero in 1950 to more than 55 percent today. This growth continues very rapidly, not only for bridges in the short span range, but also for long spans with excessive length which, here therefore, has been nearly the exclusive domain of structural steel. Many bridge designers are surprised to learn that precast, pre-stressed concrete bridges are usually lower in first cost than all other types of bridges coupled with savings in maintenance, precast bridges offer maximum economy. The precast pre-stressed bridge system has offered two principal advantages: it is economical and it provides minimum downtime for construction. This work presents a longitudinal and transverse design and analysis of PSC T-Girder which is 30m in span. The study focuses on PSC Beams, where the beam post-tensioning values, rate of elongation and behaviour can be defined after stressing. The software MIDAS is used to analyse the T-girder. PSC T-beam, have gained wide acceptance in freeway and bridge systems due to their structural efficiency, better stability, serviceability, economy of construction and pleasing aesthetics. PSC beam design is more complicated as structure is more complex as well as needed sophisticated from work. In the place of PSC T- beam if we talk about RCC T- beam geometry is simple and does not have sophisticated in construction. The main code followed in this course is IS: 1343 – 2012 entitled Code of Practice for Pre-stressed Concrete. It is published by the Bureau of Indian Standards. Some provisions of Code IS: 456 - 2000 entitled Code of Practice for Structural Concrete are applicable to Pre-stressed Concrete.
Article Details
Unique Paper ID: 160675

Publication Volume & Issue: Volume 10, Issue 1

Page(s): 1582 - 1590
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