Abstract
A building stressed by water flow is affected by three main actions: (i) buoyancy, (ii) hydrostatic force, (iii) hydrodynamic force. The first one, sometimes also called Archimedes force, is due to the tendency of a submersed building to float because of the weight of the water that could be in its volume. The second one is due to the mass of water as (statically in quiet) that is in direct contact with the structure, it is isotropic and its direction is locally perpendicular to the contact surface, causing effects on both the vertical elements of the structure (walls, pillars and so on) and on the horizontal elements of the structure (girders, roofs and so on). The third one is provided as the result of the forces related to the water movement and affects the upstream surface of the structure, that is the surface directly facing the flow: it tends to drag the structure toward the flow direction and to scour the foundations, with an additional destabilizing effect due to local whirling eddies and possible negative pressure on the downstream surfaces of the structure.
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Notes
- 1.
The corresponding allowable stress values for a pilaster of 5 × 10 cm are respectively 347 and 694 Nm.
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Bignami, D.F., Rosso, R., Sanfilippo, U. (2019). Flood Impact on Buildings. In: Flood Proofing in Urban Areas. Springer, Cham. https://doi.org/10.1007/978-3-030-05934-7_2
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DOI: https://doi.org/10.1007/978-3-030-05934-7_2
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