‘Bridge Erection Techniques – and – their Influence on the Permanent Designs’ – Er. V. G. Abhyankar National workshop at COEP, Pune on “Innovation in Bridge Engineering” – 15-16 th Oct’2011 Under (Late) Shri S. B. Joshi Memorial Activity Page - 1 of 9 Bridge Erection Techniques and their influence on Permanent Designs Paper by – Er. Vivek G. Abhyankar – C.Eng. थापय तथा वात ु अभयंता Mumbai Abstract : Bridge engineering has significantly grown-up in past 50 years because of the increasing infrastructure demands and the developments in other peripheral branches of engineering. Many new complex bridges are coming up in reality, now. But this has resulted into a few problem areas also. Unlike in past, the development that is taking place today, in the design of bridges, is not going hand-in-hand with the Construction (Execution) technology (especially in developing countries like India). In fact, in most of the modern bridges it is observed that unless the Construction methods are excelled, there is no point in adopting any modern theory / software in the bridge design. The increasing infrastructure demands necessitate faster, safer, economical, yet superior quality of erection of bridge superstructure. In certain cases, the modern bridge erection technology imposes significantly larger loads than the design loads. On the other hand, the construction methodology has to confirm the design requirements. In the present paper the author has attempted to present the linkage between the Bridge erection technology and the Permanent design of bridges with certain live case studies. Key Words : Enabling works, Permanent Works, Bridge Super structure, Arch Bridge, Segmental Construction, Launching Girder, Floating Crane, Cantilever form traveller (CFT), Moving scaffolding system (MSS), Construction stage analysis, Construction loading, stability, Curved Girders, HSE, Santiago Calatrava, Firth of Forth Bridge, Steel Arch, Cantilever Bridge, Secondary Stresses, Cable Crane (Cable way), JV Introduction : Bridges are the backbones of any Transpiration / Infrastructure Project (Railway / Road). Bridge Engineering has a history of thousands of years, and finds it’s origin in Indian Mythology and spiritual scripts like Ramayana / Mahabharata. In those days bridges made of hip of stone blocks / bunds / timber logs were the only options possible. The old bridges were expected to merely act as a beam spanning across the gaps along the road / railway alignments. But as the growth of civilisation (society / cultural development) started taking place, the demand on all the branches of engineering (industry) increased by exponentially. The increased demand called for more and more research that started taking place. From study of engineering growth in last hundred years, we may observe that the development of Civil / Structural engineering is closely associated with the developments that took place in the peripheral branches like – Material Science, Mathematics, Communication, Electronics, Computing technology (computer science), IT, and the Newly emerging branches of engineering. As all the branches of engineering started growing, it was observed that the growth was rapid, but not parallel! This fact resulted into a serious problem – or a gap between imagination (Conceptual
9
Embed
Bridge Erection Techniques and their influence on Permanent Designs
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
‘Bridge Erection Techniques – and – their Influence on the Permanent Designs’ – Er. V. G. Abhyankar
National workshop at COEP, Pune on “Innovation in Bridge Engineering” – 15-16
th Oct’2011
Under (Late) Shri S. B. Joshi Memorial Activity
Page - 1 of 9
Bridge Erection Techniques and their influence
on Permanent Designs
Paper by – Er. Vivek G. Abhyankar – C.Eng.
�थाप�य तथा वा�तुअ�भयंता Mumbai
Abstract :
Bridge engineering has significantly grown-up in past 50 years because of the increasing
infrastructure demands and the developments in other peripheral branches of engineering. Many
new complex bridges are coming up in reality, now. But this has resulted into a few problem areas
also. Unlike in past, the development that is taking place today, in the design of bridges, is not going
hand-in-hand with the Construction (Execution) technology (especially in developing countries like
India). In fact, in most of the modern bridges it is observed that unless the Construction methods are
excelled, there is no point in adopting any modern theory / software in the bridge design. The
increasing infrastructure demands necessitate faster, safer, economical, yet superior quality of
erection of bridge superstructure. In certain cases, the modern bridge erection technology imposes
significantly larger loads than the design loads. On the other hand, the construction methodology
has to confirm the design requirements.
In the present paper the author has attempted to present the linkage between the Bridge
erection technology and the Permanent design of bridges with certain live case studies.