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- The interaction of the world’s tallest building with the geology of the Basin the city is built in By Matthew Timmis and Mark Banham.

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Presentation on theme: "- The interaction of the world’s tallest building with the geology of the Basin the city is built in By Matthew Timmis and Mark Banham."— Presentation transcript:

1 - The interaction of the world’s tallest building with the geology of the Basin the city is built in By Matthew Timmis and Mark Banham

2 Situated in Taiwan off main land eastern coast of China, the Taipei 101 is situated in Taipei City. The building itself is; metres (1, ft) tall and is situated as shown Designed to withstand typhoon winds and earthquake tremors The basin is; Approximately 240km² in area, Ground surface of the basin is relatively flat

3 Results in having two main fault lines: 1.Sanchiao fault 2.Chinshan fault However there are a further 5 less active ones Need for seismic risk mitigation Location; Philippine Sea plate and the Eurasian plate are colliding, under the northern region of Taiwan The Philippine Sea plate, which moves northwest ward at a speed of about 8cm per year

4 If a cross section from A – B of the basin is carried out like shown in the map to the right: Then a profile can be drawn; A B

5 The Quaternary sediment layers are composed of three formations: Sungshan formation - consists of interbedded coarse-grained sand and fine- grained mud with a thickness varying from 50m in the south to 120m in the northwest 1.Chingmei formation – Layer of gravel, extremely permeable, 2.Hsinchuang formation – Composed of sand and silt with this formation being further split into; 1) Wuku formation 2) Panchiou formation The Taipei basin is formed by alluvial deposits of the three rivers flowing into the basin. Therefore: Tertiary base rock Subdivisions of soil

6 Depth ranging from 40m to 65m deep under structure itself Soft Sedimentary Rock Sandstone / Siltstone / Shale Bedrock is folded and faulted Tertiary Miocene Formation Strata

7 Flexible base, rigid structure Rigid base, flexible structure Base isolation Energy dissipitation device –Tuned mass damper –Fluid damping system

8 Foundations 380x5ft diameter piles ft through quaternary layers 24x6.5ft diameter piles 16-92ft through soft bed rock The Steel structure is: Bamboo inspired structure Braced by girders every 4th floor Uses outrigger columns and super columns

9 Dog Boned Section forcing yield away from weld Tuned mass damper –730 tonne –Located on 88 floor –30% sway reduction –Snubber ring in place to limit movement

10 Hybrid construction raised unexpected concerns about stresses on the ground - 700,000 tonnes Bar pressure Some of the pressure transferred to the earth's upper crust due to extremely soft sedimentary rocks Number of micro - earthquakes has increased Will not effect the building itself however it will affect surrounding buildings.


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