Télécharger - Egis group
Transcription
Télécharger - Egis group
Egis and towers: one million square meters 1 million square meters 180000 > The guardians of the Urals, Ekaterinbourg, Russia Valode & Pistre 110000 > Tiara Towers, Dubai, United Arab Emirates ADPI 92450 > Triangle, Paris, France Herzog & De Meuron 90000 > Generali, Paris, France Valode & Pistre 90000 > Pont de Sèvres Towers, Boulogne Billancourt, France Dominique Perrault 87000 > First, Paris, France KPF - SRA Architectes 86000 > T1, Paris, France Valode & Pistre 79000 > Air² Arquitectonica 69500 > Majunga Jean-Paul Viguier 54000 > D², Paris, France Anthony Béchu - Tom Sheehan 45000 > Sequana (Mozart Tower), Issy-les-Moulineaux, France Arquitectonica 37000 > AXA – Opus 12, Paris, France Valode & Pistre 35000 > Iset, Ekaterinbourg, Russia Valode & Pistre 29460 > BIDV, Danang, Vietnam AREP 27000 > Oxygène, Lyon, France ARTE Charpentier Meeting the challenge of complexity Air2 - Paris, France Arquitectonica The aspiration of a tower project is to reconcile the sublime with reality. The sublime because a tower is an architectural work of art, a symbol of modernity and a landmark in the urban landscape. Reality because a high-rise is a dense, complex building, a vertical city that demands an extremely rational design to optimize each and every square meter. The architectural and engineering components of a tower project (the cores, the vertical traffic ways, the facades, the distribution of utilities/energy supplies, etc.) are so closely intertwined that the architect’s design and the engineer’s calculations cannot be dissociated. As demonstrated by the Tour First, winner of the French Grand Prix for engineering design, the Egis teams of engineers work on these demanding building programs, analyzing and ranking their various components to closely coordinate their interrelationships. Flows and density Core optimization The density of human flows and the multiplicity of functions, i.e., the challenges underlying the success of a tower operation, are accompanied by design constraints that extend beyond the building itself. Whether from the standpoint of human, energy or logistic flows, how the tower is inserted into the city is of prime importance. The Egis Group possesses the entire spectrum of capabilities needed to account for all these considerations: mobility, transport, energy, water, etc. The essential structural element for tower solidity, the core is the nerve center of the building and the location of multiple functions: vertical link for the occupants, for utilities, for evacuating persons, operation and maintenance zone, etc. Since the core takes up considerable space on each level, its optimization represents a major challenge in tower design. Anthony BECHU - Tom SHEEHAN Arquitectonica Arquitectonica / Paul Maurer Sequana - Issy-les-Moulineaux, France Valode & Pistre The exemplary reconstruction of this tower, built in the 70s, has: > increased its leasable floor area by raising the tower 60m and by creating 10 new levels, > cut its energy consumption figure, not by half but by three-quarters, > improved the sense of wellbeing of its occupants by creating openings in blind gable walls, reorganizing the core and increasing the floor area on each level, > improved access to the tower and its insertion into the very dense urban fabric at Paris-La Défense. Valode & Pistre KPF - SRA Architectes © Florence Levillain < Tour First Winner of the 2009 French prize for engineering design and the 2011 MIPIM Awards*. (* the world's property market event) First - Paris, France Iset - Ekaterinbourg, Russia Generali - Paris, France D2 - Paris, France Facade design Performance of the structure Safety In our time, facades have become far more than simply the architectural skin of the edifice. If facades give the tower a personality of its own via the choice of materials, textures and colors, they also determine the quality of indoor lighting, thermal comfort and the building’s energy performance. The search for excellence is the motor that drives the Egis engineers specialized in designing the increasingly complex envelopes for highrise structures. The great height of towers multiplies many times over calculations that are customarily secondary, even negligible when designing a building of conventional height. Wind can have an impact as considerable as an earthquake; the compression of the concrete becomes critical, and the oscillations at the top of the structure must be diminished to avoid discomfort for occupants. Because the time needed to evacuate the concentration of persons from a tower building in the event of an incident is significant, safety considerations are a priority component of the design process. Risk assessment and the regulations that are drafted in consequence vary from one country to another. For each tower project, Egis first investigates the specific context in the country of its location and determines the framework in terms of safety for the future building. Herzog & De Meuron ARTE Charpentier © Gilles Aymard L’Autre Image / Jean-Paul Viguier et Associés, Valode & Pistre Valode & Pistre Triangle - Paris, France T1 - Paris, France Majunga - Paris, France The guardians of the Urals - Ekaterinbourg, Russia Environmental challenges Worksite organization Green building must be realistic and economically viable. The tower’s great height offers advantages in this regard that are still not often acted upon: wind (wind turbine energy); light (solar power and the comfort of occupants); slenderness and spatial volumes (natural ventilation); density (pooling and optimization of energy sources), etc. The management of a tower construction site requires preparing a very detailed schedule for building on several levels simultaneously while avoiding any dangerous superimposition of works. The flows of workers and materials must also be minutely organized and controlled while adapting the worksite to the space available at the base of the building, which is often very limited. Oxygène - Lyon, France Egis – a 75%/25% owned subsidiary of the French “Caisse des Dépôts” and “Iosis Partenaires” (“partner” executive and employee shareholding) – is a consulting and engineering group working in the fields of transport, urban development, construction, industry, water, environment and energy. In the road and airport fields, the group is also involved in project financing, turnkey-contract projects and facility operation. With 12,000 employees, of whom 7,500 in engineering, and a turnover of €900 million in 2012, the group is present in over 100 countries and has around 50 offices in France. Egis locations worldwide 11, avenue du Centre CS 30530 Saint-Quentin-en-Yvelines 78286 Guyancourt Cedex - France T +33 (0)1 30 48 44 00 / F + 33 (0)1 30 48 44 44 [email protected] www.egis-group.com 2013 JANUARY • EGIS SA RCS Versailles 702027376 – 11 av. du Centre 78286 Guyancourt Cedex • Photos © DR, cover Generali, Paris, France • Design: www.artkas.fr Egis