RT info:eu-repo/semantics/article
T1 Design of an instant vibration-based warning system and Its operation during relocation works of historic facades
A1 Lorenzana Ibán, Antolín
A1 Villacorta Calvo, Juan José
A1 Magdaleno González, Álvaro
A1 Val Puente, Lara del
A1 Izquierdo Fuente, Alberto
K1 Cultural property - Protection
K1 Bienes culturales - Protección
K1 Buildings - Repair and reconstruction
K1 Edificios - Reparación y reconstrucción
K1 Historic buildings - Conservation and restoration
K1 Monumentos históricos - Conservación y restauración
K1 Deconstruction
K1 Deconstrucción
K1 Structural health monitoring
K1 Construction industry -- Safety measures
K1 Construcción - Seguridad - Medidas
K1 Vibration
K1 Shock (Mechanics)
K1 Colisiones (Física)
K1 Cultural heritage
K1 Patrimonio cultural
K1 Facades - Design and construction
K1 Fachadas - Diseño y construcción
K1 2201.11 Vibraciones
K1 5312.03 Construcción
K1 3305 Tecnología de la Construcción
AB Preserved listed building facades may require large-scale and highly technical work when the supporting building structure is at serious risk of collapse. Such is the case described in this paper, where vast facades must be cut into large panels up to 200 m2 and 150 t in weight and carefully laid on the ground. Various engineering works must be carried out to ensure the structural integrity of the panels to be safeguarded. Each panel must be reinforced by a temporary lattice steel structure prior to the disengagement from the supporting building frame. The operations require the use of cutting tools, hitting demolition machines and heavy cranes, which can induce potentially damaging vibrations that should be monitored and processed so that workers can be alerted in real time if certain thresholds are exceeded so that they can proceed more carefully. The paper describes the specifically designed monitoring system, its electronic parts, how they operate and how the data are processed and displayed. The monitoring system, once verified in laboratory tests, is applied to the detachment and overturning activities of a representative full-scale panel, tracking vibration levels and tilting rates. After days of operation and visual observation, it is possible to correlate vibration levels with incipient damage, establishing that peaks below 0.5 m/s2 or RMS values of 0.05 m/s2 are permissible, but that above 1.0 m/s2 or 0.3 m/s2, respectively, activities should be halted. The proposed system has proven to be useful for the intended purposes, making it possible to know the acceptable thresholds and trigger the necessary alarms in real time for the successful course of the work.
PB MDPI
SN 2075-5309
YR 2024
FD 2024
LK https://uvadoc.uva.es/handle/10324/68288
UL https://uvadoc.uva.es/handle/10324/68288
LA eng
NO Buildings, 2024, Vol. 14, Nº. 7, 1889
NO Producción Científica
DS UVaDOC
RD 17-jul-2024