Optimal Conceptual Design of High-Rise Office Buildings

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Optimal Conceptual Design of High-Rise Office Buildings

Author: Siavash Khajehpour | Size: 6.83 MB | Format: PDF | Quality: Unspecified | Publisher: Siavash Khajehpour | Year: 2001 | pages: 205

Design of a high-rise office building~ like any engineering design. is a complex
multidisciplinary process with the objective to discover~ detail and construct a system to
fulfill a given set of performance requirements. The success of this process is highly
dependent upon the cooperation taking place between the members of the design team.
Although present-day engineering computer technology allows for precise analysis and
design of the different subsystems of an high-rise building. it does not readily provide
insight for choosing among alternatives of these subsystems to arrive at the best overall
design.
This research study presents a computer-based computational method for optimal
cost-revenue conceptual design of high-rise office buildings. Specifically, a Multicriteria
Genetic Algorithm (MGA) is applied to conduct Pareto optimization that
minimi~es capital and operating costs and maximizes income revenue for a given
building project, subject to design constraints imposed by building codes and fabrication
requirements.
The conceptual design process involves the coordinated application of
approximate analysis, design and optimization. To commence the design process, a
population of different alternative designs are generated. Using approximate analysis and
design based on pre-developed data bases, the values of the conflicting cost-revenue
objective criteria are established for each design. Then, a MGA is used to explore the
design space and find improved designs having enhanced values of the objective criteria.
The results, for a given building project, is a set of Pareto-optimal conceptual designs that define the "trade-off' relationships between the three competing objective criteria to
minimize capital cost, minimize operating cost and maximize income revenue. The
corresponding three-dimensional criteria space is populated by feasible conceptual
designs that are 'equal-rank optimal' in the sense that each design is not dominated for all
three objective criteria by any other feasible design possible for the building. Life-cycle
costing is introduced to investigate the profit potential of building designs over time. The
conceptual design of four example office buildings are conducted from a variety of
viewpoints to illustrate the capability of the computational procedure to create
comprehensive computer-generated colour graphic representations of optimal costrevenue
trade-off relationships for office buildings taking into account architecturat
structural, mechanical and electrical systems. While this study focuses on office
buildings and corresponding cost-revenue criteria, the proposed computer method for
conceptual design is directly applicable to any type of artifact and related objective
criteria.

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