This paper deals with analyses and reduced scale tests carried out to validate the design of flexible protection structures for bridge piers against ship impact. The protection system analyzed is part of the fixed link currently under construction across the Parana River between the cities of Rosario and Victoria in Argentina, and it will protect a cable-stayed bridge and parts of the approach viaduct against impact of aberrant vessels with sizes up to 100,000 DWT. The protection system was designed on the basis of dissipated energy and consists of groups of steel-encased large diameter concrete piles connected at the top by a reinforced concrete platform. The impact energy is to be absorbed by large horizontal displacements of the pile caps that involve large deformations of the surrounding soil and geometrically and material nonlinear response of the pile shafts themselves. The paper focuses on modeling the nonlinear characteristics of the response of the structure, and on its assessment by means of 1:15 scale model tests performed in both the laboratory and in the field to account for the displacements and deformations undergone by the pile shafts.
ing's functions by preventing damage not only to the building itself but also to the people and furnishings. The hybrid seismic isolation system described here is one of the solutions applicable to super high-rise office buildings using steel frame structures. This system used to be regarded as a difficult technique to meet these requirements. Furthermore, the story isolations in the intermediate floor and the mega frames were extremely effective solutions to fully utilise the already-constructed structures on site.
Structural Engineering International 4/2003Structures Subjected to Extreme Natural and Man-made Hazards 227 Fig. 10: Isolated story SEI Data Block Owner: Lot Area (m 2 ): 3609,3 Building Footprint (m 2 ): 1613,8 Floor area (m 2 ): 47 613,2 Building Height (m): GL + 130
Die 1700 m lange MaChang‐Brücke ist Teil der Schnellstraßenverbindung zwischen den Städten Masan und Changwon im Süden von Korea und führt in etwa 68 m Höhe über die Bucht von Masan. Diese Hochbrücke besteht aus 550 bzw. 410 m langen Vorlandbrücken und einer 740 m langen Hauptbrücke. Die Hauptbrücke, eine 400 m weit gespannte Schrägseilbrücke mit zwei Pylonen, stellt das dominierende Bauwerk dieser Verbindung dar. Sie überspannt den 350 m breiten Schifffahrtskanal, welcher für Durchfahrten von Schiffen mit bis zu 80000 dwt ausgelegt ist.
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