Combined structural system and an example of its application in the design for a tall building complex located in Wroclaw proposed by Prof. Janusz Rębielak,

chairman of the Committee for Architecture and Town Planning of Wroclaw Branch of the Polish Academy of Sciences

General description of the tall building complex designed by means of the

combined structural system [1,2,3,4,5,6,7,8]

Fig. 1. General views and typical elevation of the GeoDome Sky Towers

designed for south of Wrocław in the architectonic competition eVolo 2012

Combined structural system and an example of its application in the design for a tall building complex located in Wroclaw proposed by Prof. Janusz Rębielak,

chairman of the Committee for Architecture and Town Planning of Wroclaw Branch of the Polish Academy of Sciences

Fig. 2. Schemes of ground flour and vertical cross-section of the central,

spherical part of the whole complex a b

Fig. 3. a) Interior view of the Tropical Island located in upper part of the geodesic sphere structure, b) perspective view of the central geodesic

sphere from the roof of the base structure

The complex called GeoDome Sky Towers is composed of four tower buildings designed in the form of rectangular prisms of square base having the edge length of 36.00 meters, which constitutes the general geometric unit of the complex. South part of the city of Wrocław in south-west Poland was assumed as the designed localization of this complex. Each of its four towers contains 80 storeys, the typical height of each storey equals 4.50 m. They are put on the common horizontal base shaped as the combined foundation having the height of 18.00 meters

Combined structural system and an example of its application in the design for a tall building complex located in Wroclaw proposed by Prof. Janusz Rębielak,

chairman of the Committee for Architecture and Town Planning of Wroclaw Branch of the Polish Academy of Sciences

and containing three technical storeys. This horizontal base is placed directly on the subsoil level. The total height of this complex equals slightly more than 380.00 meters. Inner spaces of the four towers are devoted for needs of offices, hotels, apartments and other similar useful purposes. A huge geodesic sphere constitutes the central part of the whole complex. The diameter of this sphere is equal to ca. 100 meters and its structure is supported at for corner nodes situated in the half of the height of each tower. In the lower half of the space of the geodesic sphere are placed the technical and service rooms including a set auditoriums and numerous other multipurpose halls. Upper part is designed in mode of a Tropical Island with a big pool, see Fig. 3a, sandy beach and other accompanying facilities. The Tropical Island is supported in the huge spatial structure located below the sphere equator level and it is designed in the form of a pyramid directed upside down. The four towers are connected also by means of spatial arches, which are vertically arranged along diagonals of the square base of this complex. The form of these arches resembles pattern of stress trajectories. In the inner spaces of these huge arches there are designed to be the green sectors, where trees and plants are placed originating from various regions of the world. References: 1. Rębielak Janusz: Systemowy fundament zespolony (System of combined foundation – in Polish),

Patent registration, Patent Office of the Republic of Poland, Patent Application No P.394745), 2011. 2. Rębielak Janusz: Combined form of structural system proposed for tall buildings, Taller, Longer,

Lighter - Proceedings of IABSE-IASS Symposium, London, September, 20-23, 2011, p. 308, full paper on CD.

3. Rębielak Janusz: Koncepcja systemu konstrukcyjnego budynku wysokiego (Idea of structural system for a tall building – in Polish), Inżynieria i Budownictwo, No1, 2012, pp. 45-51.

4. Rębielak Janusz: Model numeryczny GeoDome Sky Towers (Numerical model of the GeoDome Sky Towers – in Polish), XVI Międzynarodowa Szkoła Komputerowego Wspomagania Projektowania, Wytwarzania i Eksploatacji, Wojskowa Akademia Techniczna, Warszawa-Jurata, May 14-18, 2012, Vol 2, pp. 303-308. (paper published in Journal „Mechanik”, No 7, p. 604/CD p. 835, 2012)

5. Rębielak Janusz: New forms of combined structural system proposed for tall buildings, IABSE Conference, Global thinking in structural engineering: recent achievements, Sharm El Sheikh, May 7-9, 2012, Report volume 98, pp. 150-151, (full paper on CD).

6. Rębielak Janusz: Examples of forms of tall buildings designed by means of the combined structural system, Seoul, 2012, From Spatial Structures to Space Structures, IASS-APCS 2012 Symposium, May 21-24, 2012, Seoul, Korea, Book of Abstracts, p. 366, (full paper on CD).

7. Rębielak Janusz: A method of static calculation and shape of structural system developed by application of principles of superposition, Lightweight structures in civil engineering – contemporary problems, Local seminar of IASS Polish Chapter, Warsaw, 7 December, 2012, pp. 155-158.

8. Rębielak Janusz: Review of some structural systems developed recently by help of application of numerical models, Lightweight structures in civil engineering – contemporary problems, Local seminar of IASS Polish Chapter, Warsaw, 7 December, 2012, pp. 159-164.