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    Assessment of Strength Degradation of Historic Masonry Monuments due to Damage: Load Path–Based Approach

    Source: Journal of Structural Engineering:;2017:;Volume ( 143 ):;issue: 009
    Author:
    Saurabh Prabhu
    ,
    Sez Atamturktur
    DOI: 10.1061/(ASCE)ST.1943-541X.0001843
    Publisher: American Society of Civil Engineers
    Abstract: Historic masonry monuments experience aging and accumulated damage, which consequently degrade both their stiffness and strength. Stiffness degradation can be quantified through nondestructive testing and has been widely used to determine the onset of structural damage by monitoring the changes in monuments’ dynamic behavior. For justifying and configuring repair and rehabilitation activities, strength degradation (i.e., loss in load-carrying capacity) provides a more relevant indicator than does stiffness degradation. However, strength degradation is also significantly less feasible to assess because it requires the use of destructive testing. In this paper, the authors estimate strength degradation by establishing an empirical relationship between loss in structural redundancy due to damage and the corresponding loss in load-carrying capacity. Here, structural redundancy is represented as the ability of the structure to accommodate the applied load through alternative load paths. Loss in structural redundancy is approximated as the disturbance in the load path due to the development and progression of cracks. The proposed redundancy measure is demonstrated on a historic masonry coastal fortification considering differential settlement of supports.
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      Assessment of Strength Degradation of Historic Masonry Monuments due to Damage: Load Path–Based Approach

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4242571
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    contributor authorSaurabh Prabhu
    contributor authorSez Atamturktur
    date accessioned2017-12-16T09:24:25Z
    date available2017-12-16T09:24:25Z
    date issued2017
    identifier other%28ASCE%29ST.1943-541X.0001843.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4242571
    description abstractHistoric masonry monuments experience aging and accumulated damage, which consequently degrade both their stiffness and strength. Stiffness degradation can be quantified through nondestructive testing and has been widely used to determine the onset of structural damage by monitoring the changes in monuments’ dynamic behavior. For justifying and configuring repair and rehabilitation activities, strength degradation (i.e., loss in load-carrying capacity) provides a more relevant indicator than does stiffness degradation. However, strength degradation is also significantly less feasible to assess because it requires the use of destructive testing. In this paper, the authors estimate strength degradation by establishing an empirical relationship between loss in structural redundancy due to damage and the corresponding loss in load-carrying capacity. Here, structural redundancy is represented as the ability of the structure to accommodate the applied load through alternative load paths. Loss in structural redundancy is approximated as the disturbance in the load path due to the development and progression of cracks. The proposed redundancy measure is demonstrated on a historic masonry coastal fortification considering differential settlement of supports.
    publisherAmerican Society of Civil Engineers
    titleAssessment of Strength Degradation of Historic Masonry Monuments due to Damage: Load Path–Based Approach
    typeJournal Paper
    journal volume143
    journal issue9
    journal titleJournal of Structural Engineering
    identifier doi10.1061/(ASCE)ST.1943-541X.0001843
    treeJournal of Structural Engineering:;2017:;Volume ( 143 ):;issue: 009
    contenttypeFulltext
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