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    CH18 Geotech Instrument

    Uploaded by

    Gbenga Adewumi
    Geotechnical instrumentation is used for site investigations, design verification, construction control, quality control, safety monitoring, and performance monitoring of structures. Reasons for installing instrumentation include characterizing site conditions, verifying design assumptions, monitoring construction effects, enforcing work quality, providing early failure warnings, and documenting performance. Common instrumentation choices depend on the parameter of interest, such as pore-water pressure, lateral deformation, or vertical deformation.

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    CH18 Geotech Instrument

    Uploaded by

    Gbenga Adewumi
    8 views26 pages
    Geotechnical instrumentation is used for site investigations, design verification, construction control, quality control, safety monitoring, and performance monitoring of structures. Reasons for installing instrumentation include characterizing site conditions, verifying design assumptions, monitoring construction effects, enforcing work quality, providing early failure warnings, and documenting performance. Common instrumentation choices depend on the parameter of interest, such as pore-water pressure, lateral deformation, or vertical deformation.

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    Geotechnical instrumentation is used for site investigations, design verification, construction control, quality control, safety monitoring, and performance monitoring of structures. Reasons for installing instrumentation include characterizing site conditions, verifying design assumptions, monitoring construction effects, enforcing work quality, providing early failure warnings, and documenting performance. Common instrumentation choices depend on the parameter of interest, such as pore-water pressure, lateral deformation, or vertical deformation.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    8 views26 pages

    CH18 Geotech Instrument

    Uploaded by

    Gbenga Adewumi
    Geotechnical instrumentation is used for site investigations, design verification, construction control, quality control, safety monitoring, and performance monitoring of structures. Reasons for installing instrumentation include characterizing site conditions, verifying design assumptions, monitoring construction effects, enforcing work quality, providing early failure warnings, and documenting performance. Common instrumentation choices depend on the parameter of interest, such as pore-water pressure, lateral deformation, or vertical deformation.

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    You are on page 1of 26

    24-Nov-20

    Geotechnical Instrumentation and Monitoring


    • Review geotechnical engineering – in, on, or with earth
    materials.
    • Earth Materials (Soil and Rock) VS Other construction
    materials.
     Isotropic ?
     Homogeneous?
     Linear?
    • Excavation in soils or rocks is subject to a variety of
    uncertainties.
    • Soil or rock’s properties change from place to place
    horizontally and vertically. Sometimes change with time.
    • The data are never completed and are sometimes not
    accurate due to sampling and testing. In the worst case,
    it is extremely difficult or may be impossible to do
    investigation.

    Reasons for Installing Instrumentation


    Site Investigations : Instruments are used to characterize
    initial site conditions. Common parameters of interest in
    a site investigation are pore-water pressure, permeability
    of earth materials
    Design Verification: Instruments are used to verify design
    assumptions and to check that performance is as
    predicted. Instrument data from the initial phase of a
    project may reveal the need (or the opportunity) to modify
    the design in later phases.
    Construction Control: Instruments are used to monitor the
    effects of construction. Instrument data can help the
    engineer determine how fast construction can proceed
    without the risk of failure.

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    24-Nov-20

    Reasons for Installing Instrumentation (cont.)


    Quality Control: Instrumentation can be used both to
    enforce the quality of workmanship on a project and to
    document that work was done to specifications.
    Safety: Instruments can provide early warning of
    impending failures, allowing time for safe evacuation of
    the area and time to implement remedial action. Safety
    monitoring requires quick retrieval, processing, and
    presentation of data, so that decisions can be made
    promptly.
    Legal Protection: Instrument data can provide evidence
    for a legal defense of designers and contractors should
    owners of adjacent properties claim that construction
    has caused damage.

    Reasons for Installing Instrumentation (cont.)


    Performance: Instruments are used to monitor the in-
    service performance of a structure. For example,
    monitoring parameters such as leakage, pore-water
    pressure, and deformation can provide an indication of
    the performance of a dam. Monitoring loads on tiebacks
    or rock bolts and movements within a slope can provide
    an indication of the performance of a drainage system
    installed in a stabilized slope.

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    24-Nov-20

    Choosing Instrumentation

    Choosing Instrumentation(cont.)

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    24-Nov-20

    Choosing Instrumentation(cont.)

    Choosing Instrumentation(cont.)

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    24-Nov-20

    Applications

    Applications(cont.)

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    24-Nov-20

    Applications(cont.)

    Monitoring Pore-Water Pressure

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    24-Nov-20

    Monitoring Pore-Water Pressure

    Monitoring Pore-Water Pressure

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    24-Nov-20

    Monitoring Pore-Water Pressure

    Monitoring Pore-Water Pressure

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    24-Nov-20

    Monitoring Pore-Water Pressure

    Monitoring Pore-Water Pressure

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    24-Nov-20

    Monitoring Pore-Water Pressure

    Monitoring Pore-Water Pressure

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    24-Nov-20

    Monitoring Pore-Water Pressure

    Monitoring Pore-Water Pressure

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    24-Nov-20

    Monitoring Pore-Water Pressure

    Monitoring Pore-Water Pressure

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    24-Nov-20

    Monitoring Lateral Deformation

    Monitoring Lateral Deformation

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    24-Nov-20

    Monitoring Lateral Deformation

    Monitoring Lateral Deformation

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    24-Nov-20

    Monitoring Lateral Deformation

    Monitoring Lateral Deformation

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    24-Nov-20

    Monitoring Lateral Deformation

    Monitoring Lateral Deformation

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    24-Nov-20

    Monitoring Lateral Deformation

    Monitoring Lateral Deformation

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    24-Nov-20

    Monitoring Vertical Deformation

    Monitoring Vertical Deformation

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    24-Nov-20

    Monitoring Vertical Deformation

    Monitoring Vertical Deformation

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    24-Nov-20

    Monitoring Vertical Deformation

    Monitoring Vertical Deformation

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    24-Nov-20

    Monitoring Vertical Deformation

    Monitoring Vertical Deformation

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    24-Nov-20

    Monitoring Vertical Deformation

    Monitoring Vertical Deformation

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    Monitoring Vertical Deformation

    Monitoring Vertical Deformation

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    24-Nov-20

    Monitoring Vertical Deformation

    Monitoring Vertical Deformation

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    Monitoring Vertical Deformation

    Monitoring Vertical Deformation

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    24-Nov-20

    Monitoring Vertical Deformation

    Monitoring Vertical Deformation

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