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Introduction
Introduction
The Shard, also known as the Shard of Glass, is a 95-storey skyscraper in Southwark, London. Completed in 2012 and designed by architect Renzo Piano, it stands 310 metres high, making it the tallest building in the United Kingdom. The Shard is a mixed-use building that includes office space, restaurants, a hotel, residential apartments, and a public viewing gallery. Its distinctive tapering design and extensive use of glass make it one of the most iconic examples of modern architecture in the city.
This portfolio analyzes the two main building materials used in the Shard: glass and steel. We selected four representative sites for each material to explore their specifications, performance requirements, and potential maintenance issues.
Reasons for the material choices
Glass
Glass
Natural lighting from glass can reduce building lighting energy consumption during the day.
Glass also provides a great view, maximizing the panoramic view of the city.
Glass is in line with the designer's design aesthetics, and the glass curtain wall can reflect the modernity and lightness of the building.
Steel
Steel
In terms of construction efficiency, prefabricated steel components can speed up construction and are particularly suitable for densely populated areas in the city center.
Steel has a high strength-to-weight ratio, which meets the building's tall and thin structural design and provides the required horizontal stability and wind resistance.
Material specification and performance requirements
Glass
Glass
For the performance requirements of glass materials, safety must be guaranteed first, so the impact grade of glass used for viewing platforms and curtain walls must meet the standard EN 12600. For glass guardrails, the bearing capacity must meet the standard BS 6180.
Steel
Steel
When selecting steel, high strength, good weldability and machinability must be considered, so we chose structural steel that complies with EN 10025-2 for the main structural frame, floor beams and support system of the building.
Maintenance or performance issues
Glass
Glass
Glass is easily contaminated and water-stained, especially on rainy days, so workers are required to work at height to complete the external cleaning.
Glass can also cause light pollution, with highly reflective surfaces causing glare to neighboring buildings and passersby at certain angles.
In the face of thermal expansion and contraction cracking that may be caused by extreme temperatures, the use of laminated structures can alleviate the problem.
Steel
Steel
Outdoor steel structures need to be regularly inspected for rust and should be coated with hot-dip galvanizing and anti-corrosion paint.
Steel has poor fire resistance and needs to be coated with fire-resistant coating and updated regularly.
Thermal expansion and contraction cause the steel structure to move, which requires reasonable arrangement of expansion joints to solve.
Conclusions
The combination of glass and steel in The Shard achieves a perfect fusion of lightness, transparency and structural strength;
High-performance glass makes the building energy-efficient and transparent, but also poses challenges of cleaning, maintenance and light pollution;
Steel structure enables The Shard to achieve ultra-high-rise design and rapid construction, but requires high attention to corrosion and fire protection;
In similar buildings in the future, its energy-saving glass technology and steel structure prefabrication installation experience can be used as a reference.
References
Schilling, M. and Skrotzki, B., 2022. Full dataset of several mechanical tests on an S355 steel sheet as reference data for digital representations.
Pelfrene, J., Van Dam, S., Kuntsche, J. and Van Paepegem, W., 2016, June. Numerical simulation of the EN 12600 pendulum test for structural glass. In Challenging glass conference proceedings (Vol. 5, pp. 429-438).
Haldimann, M., Luible, A. and Overend, M., 2008. Structural use of glass (Vol. 10). Iabse.
Parker, J., 2013, May. Engineering The Shard, London: tallest building in western Europe. In Proceedings of the Institution of Civil Engineers-Civil Engineering (Vol. 166, No. 2, pp. 66-73). Thomas Telford Ltd.
Parker, J., Sharratt, M. and Richmond, J., 2012, September. The Shard, London, UK: response of arches to ground movements. In Proceedings of the Institution of Civil Engineers-Bridge Engineering (Vol. 165, No. 3, pp. 185-194). Thomas Telford Ltd.
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