Structural Health Monitoring SHM - Revision history

Editor at 17:00, 15 September 2021

2021-09-15T17:00:20Z

← Older revision		Revision as of 17:00, 15 September 2021
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	* Assessing bridges.		* Assessing bridges.
	* Building pathology.		* Building pathology.
		+	* Civionics.
	* Improving the energy efficiency of buildings.		* Improving the energy efficiency of buildings.
	* Queensferry crossing.		* Queensferry crossing.

Designing Buildings at 06:57, 13 August 2021

2021-08-13T06:57:31Z

Editor at 17:29, 12 August 2021

2021-08-12T17:29:34Z

← Older revision		Revision as of 17:29, 12 August 2021
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−	[[File:Queensferrycrossing.jpg]]	+	[[File:Queensferrycrossing.jpg\|link=File:Queensferrycrossing.jpg]]

	= Introduction =		= Introduction =

−	Structural health monitoring (sometimes referred to as structural health and environmental monitoring) is a term that describes emerging technology being used to document the viability and integrity of engineering projects such as bridges and buildings. In order to be useful, the observations are meant to be taken over time on a continuous basis - ideally in real time.	+	Structural health monitoring (sometimes referred to as structural health and environmental monitoring) is a term that describes an emerging technology that is being used to document the viability and integrity of engineering projects such as bridges and buildings. In order to be useful, the observations are meant to be taken over time on a continuous basis - ideally in real time.

	Christopher Beckett, lecturer in geotechnical engineering, University of Edinburgh, recognises the potential of SHM and sees it as "a burgeoning discipline" that could be "a possible solution to maintaining safety" using computing technology.		Christopher Beckett, lecturer in geotechnical engineering, University of Edinburgh, recognises the potential of SHM and sees it as "a burgeoning discipline" that could be "a possible solution to maintaining safety" using computing technology.

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Created page with "File:Queensferrycrossing.jpg = Introduction = Structural health monitoring (sometimes referred to as structural health and environmental monitoring) is a term that describe..."

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[[File:Queensferrycrossing.jpg]]

= Introduction =

Structural health monitoring (sometimes referred to as structural health and environmental monitoring) is a term that describes emerging technology being used to document the viability and integrity of engineering projects such as bridges and buildings. In order to be useful, the observations are meant to be taken over time on a continuous basis - ideally in real time.

Christopher Beckett, lecturer in geotechnical engineering, University of Edinburgh, recognises the potential of SHM and sees it as "a burgeoning discipline" that could be "a possible solution to maintaining safety" using computing technology.

Beckett explains how sensors placed throughout a structure can be used to "monitor the condition of embedded reinforcement, accelerations within the structure (e.g. under wind loads) and the formation and propagation of cracks, amongst many other indicators of damage. Timely intervention, targeting the worst-affected areas, may provide the Holy Grail of a cost effective, safe solution for construction without needing to abandon coastal areas."

= Types of SHM =

SHM is non-evasive. Information that has been gathered through SHM can be used for maintenance purposes, but it is primarily used to detect systems that may have been compromised.

Passive SHM describes the observation and analysis of the integrity of engineering projects and systems. This approach relies on inference or interpretation of operational data to provide the evaluation of the structural health of the project.

Active SHM is a form of direct assessment used to evaluate the state of structural health of the project. It attempts to detect the actual presence and extent of structural damage rather than extrapolate the condition based on interpretation.

= Expanding role of SHM =

With the advancement of technology, the definition and goals of SHM have changed. SHM can be used to record changes - or the absence of changes - in the characteristics of materials and structures. It can also be used to estimate the degradation of civil infrastructures, either due to age or extreme events such as floods, earthquakes, explosions and so on.

SHM systems can include wired or wireless sensors (over wired or wireless sensor networks) that are embedded into structures. These sensors record all types of movement and save the information so it can be analysed.

= SHM and bridges =

Bridge assessment, although a challenging subject, can also be a rich field that offers opportunities for research, innovation and the development of technical expertise. When applied to bridges, SHM can produce valuable data sets that can aid key decisions on current performance, margins of safety, actual loading, stress history, extent of deterioration and residual life.

Long span bridges in particular can benefit from the sensing technology that is incorporated into SHM. The Queensferry Crossing (originally known as the Forth Replacement Crossing) across the Firth of Forth is one of the largest infrastructure projects of its kind. The 2.7 km structure is the longest three-tower, cable-stayed bridge in the world, as well as by far the largest to feature cables which cross mid-span.

It was constructed with thousands of sensors as part of its SHM monitoring system. Since it opened in 2017, SHM professionals have been able to use a web-based system to access the data that has been collected by the sensors.

= Related articles on Designing Buildings Wiki =

* Assessing bridges.
* Building pathology.
* Improving the energy efficiency of buildings.
* Queensferry crossing.
* Surfside condo collapse: climate change demands adaptation in design and approach.

[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:DCN_Research,_Development_and_Innovation]] [[Category:DCN_Software]] [[Category:Definitions]] [[Category:Research_/_Innovation]] [[Category:Health_and_safety_/_CDM]] [[Category:Construction_techniques]] [[Category:Design]] [[Category:Products_/_components]] [[Category:Roles_/_services]]

← Older revision		Revision as of 06:57, 13 August 2021
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	= Introduction =		= Introduction =

−	Structural health monitoring (sometimes referred to as structural health and environmental monitoring) is ~~a term that describes~~ an emerging technology ~~that is being~~ used to document the viability and integrity of engineering projects such as bridges ~~and buildings. In order to be useful, the observations are meant to be taken over time on a continuous basis - ideally in real time~~.	+	Structural health monitoring (SHM - sometimes referred to as structural health and environmental monitoring) is an emerging technology used to document the viability and integrity of engineering projects such as bridges.

−	Christopher Beckett, lecturer in geotechnical engineering, University of Edinburgh, recognises the potential of SHM and sees it as "a burgeoning discipline" that could be "a possible solution to maintaining safety" using ~~computing~~ technology.	+	Christopher Beckett, lecturer in geotechnical engineering, University of Edinburgh, recognises the potential of SHM and sees it as "a burgeoning discipline" that could be "a possible solution to maintaining safety" using technology.

	Beckett explains how sensors placed throughout a structure can be used to "monitor the condition of embedded reinforcement, accelerations within the structure (e.g. under wind loads) and the formation and propagation of cracks, amongst many other indicators of damage. Timely intervention, targeting the worst-affected areas, may provide the Holy Grail of a cost effective, safe solution for construction without needing to abandon coastal areas."		Beckett explains how sensors placed throughout a structure can be used to "monitor the condition of embedded reinforcement, accelerations within the structure (e.g. under wind loads) and the formation and propagation of cracks, amongst many other indicators of damage. Timely intervention, targeting the worst-affected areas, may provide the Holy Grail of a cost effective, safe solution for construction without needing to abandon coastal areas."
Line 13:		Line 13:
	SHM is non-evasive. Information that has been gathered through SHM can be used for maintenance purposes, but it is primarily used to detect systems that may have been compromised.		SHM is non-evasive. Information that has been gathered through SHM can be used for maintenance purposes, but it is primarily used to detect systems that may have been compromised.

−	Passive SHM ~~describes the observation and analysis of the integrity of engineering projects and systems. This approach~~ relies on inference or interpretation of operational data to provide the evaluation of the structural health of the project.	+	Passive SHM relies on inference or interpretation of operational data to provide the evaluation of the structural health of the project.

−	Active SHM ~~is a form of direct assessment used to evaluate the state of structural health of the project. It~~ attempts to detect the actual presence and extent of structural damage rather than extrapolate the condition based on interpretation.	+	Active SHM attempts to detect the actual presence and extent of structural damage rather than extrapolate the condition based on interpretation.

	= Expanding role of SHM =		= Expanding role of SHM =

−	~~With the advancement of technology, the definition and goals of SHM have changed.~~ SHM can be used to record changes - or the absence of changes - in the characteristics of materials and structures. It can also be used to estimate the degradation of ~~civil infrastructures~~, either due to age or extreme events such as floods, earthquakes, explosions and so on.	+	SHM can now be used to record changes - or the absence of changes - in the characteristics of materials and structures. It can also be used to estimate the degradation of infrastructure, either due to age or extreme events such as floods, earthquakes, explosions and so on.

−	SHM systems can include wired or wireless sensors (over wired or wireless sensor networks) that are embedded into structures. These sensors record all types of movement ~~and save the information~~ so it can be analysed.	+	SHM systems can include wired or wireless sensors (over wired or wireless sensor networks) that are embedded into structures. These sensors record all types of movement so that it can be analysed.

	= SHM and bridges =		= SHM and bridges =

−	~~Bridge assessment, although a challenging subject, can also be a rich field that offers opportunities for research, innovation and the development of technical expertise.~~ When applied to bridges, SHM can produce valuable data sets that can aid key decisions on current performance, margins of safety, actual loading, stress history, extent of deterioration and residual life.	+	When applied to bridges, SHM can produce valuable data sets that can aid key decisions about current performance, margins of safety, actual loading, stress history, extent of deterioration and residual life.

−	Long span bridges in particular can benefit from the sensing technology that is incorporated into SHM. The Queensferry Crossing (originally known as the Forth Replacement Crossing) across the Firth of Forth is one of the largest infrastructure projects of its kind. The 2.7 km structure is the longest three-tower, cable-stayed bridge in the world, as well as by far the largest to feature cables which cross mid-span.	+	Long span bridges in particular can benefit from the sensing technology that is incorporated into SHM. The Queensferry Crossing (originally known as the Forth Replacement Crossing) across the Firth of Forth is one of the largest infrastructure projects of its kind. The 2.7 km structure is the longest three-tower, cable-stayed bridge in the world, as well as by far the largest to feature cables which cross mid-span. It was constructed with thousands of sensors as part of its SHM monitoring system. Since it opened in 2017, SHM professionals have been able to use a web-based system to access the data that has been collected by the sensors.
−		+
−	It was constructed with thousands of sensors as part of its SHM monitoring system. Since it opened in 2017, SHM professionals have been able to use a web-based system to access the data that has been collected by the sensors.	+

	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =