scholarly journals Tall Building Design Exploration: Designing For Wind Resilience

10.29007/l5cv ◽  
2018 ◽  
Author(s):  
Mohamed Khallaf ◽  
Julie Jupp

The paper presents a performance-based design method that combines building and urban objectives for the control of winds impacting on tall buildings at the pedestrian, podium and upper levels. The performance-based method accounts for wind flow and wind load in a form optimization technique that considers a variety of criteria defining urban microclimates, defined by high-density, multi-level building forms subject to acute variations in seasonal wind conditions. The approach is based on the theoretical foundations of ‘designing for urban resilience; and highlights the different objectives of this approach relative to existing (tall) building design standards and urban city planning guidelines.


Author(s):  
O. G. Litvinova ◽  
T. G. Cheshuina

Pre-project studies in modern building design in the historical and architectural urban environment is relevant to architects, as the city-planning requirements are systematically updated and complicated. A special attention is paid to the analysis of international documents, which formulate objective approaches to preservation of the unique architectural and artistic images of the urban environment. The purpose of this study is to concretize the list of research works for identification of the architectural design standards in the historical environment. The events and the standards are formulated on the basis of the structural analysis of the Russian and foreign experience of modern design organizations. A number of proposed analytical studies include the data systematization in terms of town planning regulations established by cultural heritage sites, photographic recording of landscape, graphical analysis of streets in order to identify common patterns in the historical development of the architectural environment and styles. On the examples of Achinskaya Street in Tomsk and a new construction project the process of developing such standards is clearly demonstrated. The presented design method can be used in the design and estimate documentation for new building construction within the protection zones, development control zones and will meet the requirements for the Federal Law of Cultural Heritage Objects (Historical and Cultural Monuments) of Peoples of the Russian Federation.



2019 ◽  
Vol 258 ◽  
pp. 03012 ◽  
Author(s):  
Hazrina Mansor ◽  
Yazmin Sahol Hamid ◽  
Nurul Huda Suliman ◽  
Nursafarina Ahmad ◽  
Noorfaizah Hamzah

In the aftermath of the September 11th attack, design of tall buildings particularly in the aspect of safety systems and structural robustness, arguably the most crucial issues that is deliberated till to date. Concerning the safety systems specifically on evacuation egress, many novels and innovative evacuation solutions for high rise buildings that have been researched and put forward, for instances Platform Rescue Systems (PRS), Controlled Descent Devices (CDD) and Escape Chutes. Still, the practicability of the existing proposed egress systems to be implemented in the real-life situation and its compliance with the tall building design legislation remain unknown. For developing countries such as Malaysia and United Arab Emirates, tall buildings play a role as an iconic landmark. While countries like China and Hong Kong, tall building is needed due to the scarcity of land and high populations. As more than one hundred tall structure exists in the world, and will be increasing by 2020; therefore, it is urgently needed that existing engineering practices in designing tall building to be reviewed with respect to evacuation egress. The main objective of this paper is to create awareness among developers, consultants and contractors that proper evacuation egress in tall building design and development is a must. This paper provides a comprehensive review of the existing engineering practices on tall building evacuation planning systems and design. Furthermore, the effectiveness of the currently proposed systems and its consideration amongst structural and safety engineers are also reported.



2020 ◽  
pp. 165-179
Author(s):  
T Saroglou ◽  
T Theodosiou ◽  
I. A. Meir

Tall buildings around the world are increasing at an accelerating pace. However, this fast-pace development is not in tandem with today’s environmental considerations towards reducing high carbon emissions, mainly relating to the building sector (close to 50% of carbon dioxide (CO2) emissions). The vast scale and energy demands of tall buildings call for an in-depth study of this building typology towards improving energy efficiency. An important consideration for lowering energy demands is the configuration of the building envelope that acts as the mediator between indoor and outdoor conditions, according to the climate and microclimate of the building’s location. Current architectural practices of fully glazed curtain wall envelopes make this relationship problematic, by resulting in high-energy loads for achieving thermal comfort. Over the last few years, a step forward towards energy efficiency is the use of a double-skin façade (DSF). Its application, however, is lacking consideration of the specific climatic conditions that will essentially result in an energy efficient design. Previous research revealed that the most energy efficient DSF in the Mediterranean climate is with LowE glazing as the outside DSF layer. Further studies on DSF cavity width for a hot climate, were in favour of wider cavities, as these reduce the high cooling loads that are associated with this climate. Additionally, simulations of an office building in the Mediterranean climate, confirmed that cooling energy is also present during winter (airtight DSF), suggesting for a more active DSF envelope design throughout the year. A further study is then conducted through simulations, where the DSF design alternates between an open / closed DSF, and comparisons are made in relation to DSF width, building height above ground, outdoor environmental conditions and interior thermal comfort, for further improving the energy efficiency of tall building design.



2020 ◽  
Vol 0 (6) ◽  
pp. 119-134
Author(s):  
Denis Mykhaylovskyi ◽  
Bohdan Bondarchuk


Holzforschung ◽  
2020 ◽  
Vol 74 (11) ◽  
pp. 1011-1020
Author(s):  
Danyang Tong ◽  
Susan Alexis Brown ◽  
David Corr ◽  
Gianluca Cusatis

AbstractRising global emission have led to a renewed popularity of timber in building design, including timber-concrete tall buildings up to 18 stories. In spite of this surge in wood construction, there remains a gap in understanding of long-term structural behavior, particularly wood creep. Unlike concrete, code prescriptions for wood design are lacking in robust estimates for structural shortening. Models for wood creep have become increasingly necessary due to the potential for unforeseen shortening, especially with respect to differential shortening. These effects can have serious impacts as timber building heights continue to grow. This study lays the groundwork for wood compliance prediction models for use in timber design. A thorough review of wood creep studies was conducted and viable experimental results were compiled into a database. Studies were chosen based on correlation of experimental conditions with a realistic building environment. An unbiased parameter identification method, originally applied to concrete prediction models, was used to fit multiple compliance functions to each data curve. Based on individual curve fittings, statistical analysis was performed to determine the best fit function and average parameter values for the collective database. A power law trend in wood creep, with lognormal parameter distribution, was confirmed by the results.



1995 ◽  
Vol 4 (2) ◽  
pp. 169-184 ◽  
Author(s):  
C. C. Pouangare ◽  
J. J. Connor


Author(s):  
Yi Li ◽  
Chao Li ◽  
Qiu-Sheng Li ◽  
Yong-Gui Li ◽  
Fu-Bin Chen

This paper aims to systematically study the across-wind loads of rectangular-shaped tall buildings with aerodynamic modifications and propose refined mathematic models accordingly. This study takes the CAARC (Commonwealth Advisory Aeronautical Research Council) standard tall building as a benchmark model and conducts a series of pressure measurements on the benchmark model and four CAARC models with different round corner rates (5%, 10%, 15% and 20%) in a boundary layer wind tunnel to investigate the across-wind dynamic loads of the typical tall building with different corner modifications. Based on the experimental results of the five models, base moment coefficients, power spectral densities and vertical correlation coefficients of the across-wind loads are compared and discussed. The analyzed results shown that the across-wind aerodynamic performance of the tall buildings can be effectively improved as the rounded corner rate increases. Taking the corner round rate and terrain category as two basic variables, empirical formulas for estimating the across-wind dynamic loads of CAARC standard tall buildings with various rounded corners are proposed on the basis of the wind tunnel testing results. The accuracy and applicability of the proposed formulas are verified by comparisons between the empirical formulas and the experimental results.



2018 ◽  
Vol 33 ◽  
pp. 01020 ◽  
Author(s):  
Viktor P. Generalov ◽  
Elena M. Generalova ◽  
Nadezhda A. Kalinkina ◽  
Irina V. Zhdanova

The paper focuses on peculiarities of tall buildings and complexes, their typology and its formation in relation to their functional structure. The research is based on the analysis of tall buildings and complexes and identifies the following main functional elements of their formation: residential, administrative (office), hotel elements. The paper also considers the following services as «disseminated» in the space-planning structure: shops, medicine, entertainment, kids and sports facilities, etc., their location in the structure of the total bulk of the building and their impact on typological diversity. Research results include suggestions to add such concepts as «single-function tall buildings» and «mixed-use tall buildings and complexes» into the classification of tall buildings. In addition, if a single-function building or complex performs serving functions, it is proposed to add such concepts as «a residential tall building (complex) with provision of services», «an administrative (public) tall building (complex) with provision of services» into the classification of tall buildings. For mixed-use buildings and complexes the following terms are suggested: «a mixed-use tall building with provision of services», «a mixed-use tall complex with provision of services».



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