Ultra-High Performance Concrete UHPC: Fundamentals, Design, by Michael Schmidt, Ekkehard Fehling, Joost Walraven, Torsten

By Michael Schmidt, Ekkehard Fehling, Joost Walraven, Torsten Leutbecher, Susanne Fröhlich

Chosen chapters from the German concrete yearbook at the moment are being released within the new English "Beton-Kalender Series" for the good thing about a global audience.

Since it used to be based in 1906, the Ernst & Sohn "Beton-Kalender" has been aiding advancements in bolstered and prestressed concrete. the purpose was once to post a yearbook to mirror growth in "ferro-concrete" buildings until eventually - because the book's first editor, Fritz von Emperger (1862-1942), expressed it - the "tempestuous development" during this type of building got here to an finish. even though, the "Beton-Kalender" speedy turned the selected paintings of reference for civil and structural engineers, and except the years 1945-1950 has been released each year ever since.

Ultra excessive functionality concrete (UHPC) is a milestone in concrete expertise and alertness. It allows the development of either extra slim and harder concrete buildings with a chronic carrier existence and hence more advantageous sustainability.

This booklet is a entire evaluation of UHPC - from the rules at the back of its construction and its mechanical houses to layout and detailing elements. the point of interest is at the fabric behaviour of metal fibre-reinforced UHPC. Numerical modelling and detailing of the connections with strengthened concrete components are featured in addition. various examples all over the world - bridges, columns, facades and roofs - are the foundation for extra causes concerning the advantages of UHPC and the way it is helping to understand numerous architectural requirements.

The authors are commonly focused on the trying out, layout, development and tracking of UHPC constructions. What they supply this is for this reason a distinct synopsis of the cutting-edge in order to useful purposes.

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Additional resources for Ultra-High Performance Concrete UHPC: Fundamentals, Design, Examples (BetonKalender Series)

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In several of its design features this bridge resembled the Leverkusen Bridge and other German bridges with a central cable plane and a deep, but relatively narrow, box girder under the wide orthotropic bridge floor. The cable system was of the fan type with only two sets of stays radiating from each pylon top. 45 Knie Bridge across the Rhine at D€ usseldorf (Germany) was composed of several helical bridge strands of galvanized wires. As a novelty each strand was covered with a hot extruded polyethylene coating with a minimum cover of 5 mm.

This temporary system was made as a cable stayed system very similar to the one adopted in the Str€ omsund Bridge. And so the Duisburg–Ruhrort Bridge was born with a pure cable stayed system, but this was subsequently replaced by the rein chord system after completion of the deck erection. Afterwards, it seemed obviously irrational first to build a bridge with a completely sensible cable stayed system and then replace it by a less efficient and more complicated cable system such as the rein chord system.

For this reason the structural system of the cable stayed portion was regarded as a plane system, was statically indeterminate to the ninth degree and, as the system was completely asymmetrical, the advantages of splitting into symmetrical and antisymmetrical loading could not be utilized. The task of analyzing the bridge in the final stage, as well as during erection, was therefore of considerable magnitude at the time it had to be performed. Although it was one of the very first cable stayed bridges, the Severins Bridge still stands as a most successful bridge of this type.

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