Monitoring the Impact of the Large Building Investments on the Neighborhood

Łupieżowiec, M.

doi:10.3390/app11146537

Cited by 4 publications

(2 citation statements)

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“…Risk minimization, while following the principles of sustainable development, can be done in several different ways. The main division of risk minimization boils down to two categories: direct and indirect collateral [23]. Direct risk minimization includes, among others, methods related to structure monitoring.…”

Section: Hazards Occurring During Deep Excavation Executionmentioning

confidence: 99%

Hazard Reduction in Deep Excavations Execution

2022

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In this article, the authors consider a completely new approach in design, which is related to the use of previously un-adapted technologies known to bridge engineering in geotechnical issues for prestressing of diaphragm wall during deep excavations execution. The bridge technology described here is the prestressing of concrete structures. Hazards related to deep excavations and methods of digging them, such as the ceiling method and top&down method, are presented. Current problems in supporting deep excavation slopes are related to the use of extensive quantities of materials (such as steel struts, ground anchors, or concrete and reinforcement steel). The authors’ method helps to achieve a higher level of sustainability, which is important in a modern approach to geotechnical engineering. The non-linear arrangements of the cables according to the occurrence of the prestressing moments for a given phase are presented. Results related to numerical analysis—showing the correctness of the method and cost optimization results, showing possible savings are presented. The article is a part of the set. In the second (already published) article titled “Modern Methods of Diaphragm Walls Design”, the authors present the concept of the calculation methodology for diaphragm wall design.

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Section: Hazards Occurring During Deep Excavation Executionmentioning

confidence: 99%

Hazard Reduction in Deep Excavations Execution

2022

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“…So, a special attention was given to also this phase. In fact, very often, during excavation works the level of the trench bottom is lower than the existing foundation level of the adjacent structures which are therefore very sensitive to any horizontal displacements and settlements resulting from the works in progress whereby very strict restrictions in this respect are imposed (Lupieżowiec, 2021).…”

Section: Overview Of the Study Casementioning

confidence: 99%

Integrated survey approaches for monitoring procedures during yard phases

Rahali

Malinverni

Pierdicca

et al. 2022

Proceedings of the 5th Joint International Symposium on Deformation Monitoring - JISDM 2022

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Buildings, construction sites and civil structures need an accurate, continuous, and real time monitoring system. This necessity arises to detect dangerous situations for the structures and any occupant, especially during natural or anthropogenic events such as earthquakes or delicate phases of invasive operations such as excavations for piling. During these situations, the static and dynamic conditions of a structure and everything related to it could be impaired. The analysis and evaluation of significant displacements and deformation parameters, which are fundamental for structural controls and health monitoring, can be approached following different exchangeable procedures. Among the non-destructive monitoring techniques used in recent years, such as in this research, wireless sensors, are having a remarkable development in detecting anomalies. The acquisition of significant deformation parameters is obtained starting from the traditional topographic survey by total station and using static and dynamic sensors. Monitoring equipment concerns three-axial wireless tiltmeters which allow to measure accurately any angle of inclination in the points where they are installed in order to monitor kinematic movements during yard phases. The main purpose of this experiment is to compare data collected by tiltmeters with those obtained by the robotic total station. Three-axial accelerometers are also installed to obtain the acceleration value of the different reference points. By processing the collected data, it is proved that the final results are comparable, despite using different and completely independent monitoring systems. These integrated survey approaches demonstrate the effectiveness and efficiency of designing a monitoring system based on sensors that are installed to observe changing phenomena over the time, especially during delicate phases of invasive operations, which may represent a more widespread low-cost and reliable solution.

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