Dynamic Shading Device Design with Computational Building Information Modelling for High-Rise Office Building in Tropical Climate
摘要
With orthodox design methods, architects are confronted with rather complex challenges in the effective design and development of responsive shading devices for peculiar building performance requirements. Hence, there is a need for consolidated tools and workflows capable of generating quick, performance-driven design outcomes from decisions made at preliminary design stages up to building operation phases. The use of BIM was explored in proposing solar-responsive vertical and horizontal shading elements, through a combination of parametric design tools. Dynamo (Revit) was utilized to parametrically generate sun-blocking algorithms to generate rotational operation of shading devices in effect to hour-based changes in the sun path, with the aim of optimizing the building envelope for solar radiation and daylight performance. BIM-based simulations were also executed using Integrated Environmental Solutions-Virtual Environment modules, to evaluate the dynamic shading devices for solar radiation and daylight performance respectively. The simulation results, which were comparatively evaluated against the Malaysian Standards, presented significant performance values for solar shading (> 70%), as well as optimized daylight levels (300–400 lx) in the interior environment for most periods of the building operation hours.