Structural health monitoring of the AMP building during its partial demolition and reconstruction

Abstract

The structural health monitoring (SHM) of civil structures is of significant interest to both researchers and industry practitioners. SHM systems are used to monitor the performance of structures, identify the evolution and severity of damage and ensure structural integrity. SHM systems record structural parameters over time to ensure optimal structural health depending on the nature and purpose of the structure. However, compared with studies on other types of structures, such as bridges, those on the monitoring of high-rise buildings under construction are limited. Multistorey buildings comprise a large number of structural members, and the locations in which sensors can be installed are limited and constrained by the construction process. Additionally, identifying the relationship between load and member behaviour is complex. Thus, predicting the actual structural behaviours of buildings under construction is quite challenging compared with other civil structures. The focus of this thesis is to conduct SHM of the central core wall and podium of a 48-storey office building, namely the AMP Centre at 50 Bridge St in Sydney, Australia. The building is currently undergoing renovations involving the demolition and reconstruction of its northern section, which has been taking place from 2018 to 2022. The new building will be a hybrid of the original sections built in the 1970s along with the reconstructed northern section. The floor plan of the original building is nearly rectangular in shape and has a maximum area of 2,500 m2. The building is approximately 216.45 m in height. Design engineers are concerned about the material properties of the original building as well as the building’s structural responses, including the composite action of the core wall system, the differential settlement of the original and new core walls, any possible damage during demolition and any existing internal concrete defects. To minimise the effects of these responses on building design, building performance was being measured in situ during construction and compared with a finite element model. This thesis presents a real-time SHM technique for a high-rise building undergoing construction over 3 years.

Date of Thesis submission	2022
Original language	English
Awarding Institution	Western Sydney University
Supervisor	Bijan Samali (Supervisor) & Mohsen Askari (Supervisor)