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Budynki wysokie o kondygnacjach podwieszonych

Cała Ireneusz

Materiały Budowlane

2021

nr 12

43--46

W artykule podjęto próbę przybliżenia zagadnień dotyczących kształtowania konstrukcji wieżowców ze stropami podwieszonymi do trzonu nośnego. Współczesne realizacje takich budynków są często znacznymi modyfikacjami konstrukcji nazywanych systemami wieszarowymi, które powstały w latach sześćdziesiątych XX w. Modyfikacje dotyczą przede wszystkim systemów konstrukcyjnych. W rozwiązaniach architektonicznych, jak na początku, podstawową zasadą jest możliwość uwolnienia dolnych kondygnacji od słupów zewnętrznych. W przypadku współczesnych złożonych form systemów konstrukcyjnych tworzone są modele numeryczne, które umożliwiają uwzględnienie przestrzennej pracy konstrukcji. Daje to możliwość modyfikacji starszych, znacznie prostszych, systemów konstrukcyjnych i tworzenia zaskakujących przestrzennie, dynamicznych, lekkich optycznie budynków, stanowiących kontrast w stosunku do rozwiązań tradycyjnych.

This article attempts to present the issues related to the shaping of the structure of high-rise buildings with ceilings suspended from the load-bearing core. Contemporary realizations of buildings with suspended storeys are often considerable modifications to structures called suspension systems, which were created in the 1960s. The modifications concern mainly construction systems. In architectural solutions, as in the beginning, the basic principle is the possibility of freeing the lower storeys from external columns. For modern complex forms of structural systems, numerical models are created to account for the spatial work of the structure. This allows for the modification of older, much simpler, structural systems and the creation of spatially surprising, dynamic, optically light buildings that contrast with traditional solutions.

Technological Advances in Japan’s High-Rise Buildings

Szołomicki Jerzy, Golasz-Szołomicka Hanna

Budownictwo i Architektura

2019

Vol. 18, nr 2

47--71

The architectural and structural analysis of selected high-rise buildings in Japan is presented in this paper. Tokyo, Osaka and Nagoya have the largest share in development of high-rise buildings. Those cities are very densely populated and moreover they are located in one of the most active seismic zones. The combination of these factors has resulted in the creation of sophisticated designs and innovative engineering solutions, especially in the field of design and construction of high-rise buildings. The foreign architectural studios (Jean Nouvel, Kohn Pedesen Associates, Skidmore, Owings & Merrill) which specialize in the designing of skyscrapers, played a major role in the development of technological ideas and architectural forms for such extraordinary engineering structures. Among the projects completed by them, there are examples of high-rise buildings that set precedents for future development. An essential aspect which influences the design of high-rise buildings is the necessity to take into consideration their dynamic reaction to earthquakes and counteracting wind vortices. The need to control motions of these buildings, induced by the force coming from earthquakes and wind, led to the development of various methods and devices for dissipating energy during such phenomena. Currently, Japan is a global leader in seismic technologies which safeguard seismic influence on high-rise structures. Due to these achievements the most modern skyscrapers in Japan are able to withstand earthquakes with a magnitude of over seven degrees at the Richter scale. Applied damping devices applied are of a passive type, which do not require additional power supply or active type which need the input of extra energy. In recent years also hybrid dampers were used, with an additional active element to improve the efficiency of passive damping.