By Holger Svensson
The necessity for large-scale bridges is continually starting to be because of the huge, immense infrastructure improvement world wide. because the Nineteen Seventies lots of them were cable-stayed bridges. In 1975 the biggest span size used to be 404 m, in 1995 it elevated to 856 m, and this present day it really is 1104 m. hence the economically effective variety of cable-stayed bridges is tending to maneuver in the direction of even higher spans, and cable-stayed bridges are more and more the focal point of curiosity worldwide.
This booklet describes the basics of layout research, fabrication and development, during which the writer refers to 250 equipped examples to demonstrate all elements. foreign or nationwide codes and technical rules are stated in simple terms as examples, similar to bridges that have been designed to German DIN, Eurocode, AASHTO, British criteria. The chapters on cables and erection are a big concentration of this paintings as they symbolize crucial distinction from different varieties of bridges.
The examples have been selected from the bridges within which the writer was once in my opinion concerned, or the place the consulting engineers, Leonhardt, Andr? and companions (LAP), participated considerably. different bridges are integrated for his or her unique structural features or their list span lengths. crucial layout engineers also are presented.
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Additional info for Cable-Stayed Bridges: 40 Years of Experience Worldwide
2012 Ernst & Sohn GmbH & Co. KG. Published 2012 by Ernst & Sohn GmbH & Co. KG. 1 Introduction The principle of supporting a beam or a mast by taught cables goes far back in time. Early examples are bridges from natural materials such as bamboo for the beam and lianas for ties, Fig. 1. The masts of sailing vessels were always transversely stayed by shrouds, Fig. 2. Interestingly, this analogy still exists today in the French name ‘pont a haubans’ and the Russian name ‘wantowyj most’ for cable-stayed bridges.
Transient loads in the main span have to be carried by bending in the tower because the usual backstay cables are missing. ’ The modern way of lighting a bridge uses floodlights which cover whole areas instead of using individual lights which only follow the contours. The Kap Shui Mun Bridge in Hong Kong is lit in a pale blue, Fig. 123. Interesting coloring effects are achieved by the transition from strong lighting at beam level to darker colors higher up. The Nan Pu Bridge in Shanghai uses a warm yellow light above the beam and a pale blue underneath, Fig.
1. The masts of sailing vessels were always transversely stayed by shrouds, Fig. 2. Interestingly, this analogy still exists today in the French name ‘pont a haubans’ and the Russian name ‘wantowyj most’ for cable-stayed bridges. 1], which has also been used by later books. 19], especially transporter bridges. What is the difference between the precursors and modern cablestayed bridges? Modern cable-stayed bridges have stay cables with well-defined and tuned cable forces which transfer their loads directly, Fig.
Cable-Stayed Bridges: 40 Years of Experience Worldwide by Holger Svensson