Damage assessment of squat, thin and lightly-reinforced concrete walls by the Park &amp; Ang damage index

Carrillo, Julián; Oyarzo-Vera, Claudio; Blandon, Carlos A.

doi:10.1016/j.jobe.2019.100921

Cited by 17 publications

(7 citation statements)

References 17 publications

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“…For instance, Kunnath et al 34 modified the index by calibrating the parameters for damages on RC buildings based on rotations. Similarly, Carrillo et al 35 performed a calibration procedure for RC shear walls, weighting the parameters as a function of the cumulative ductility demands. Equation (1) shows the mathematical form of the original Park and Ang index.…”

Section: Park and Ang Damage Indexmentioning

confidence: 99%

“…This section describes the procedure adopted to map the ranges of DI that define specific damage states of the URM elements. These damage states represent distinct levels of damage which would be reflected in different structural performances and are linked to different repair strategies and thus, different repair/replacement costs, Such mapping procedure is usually performed in three ways including: (i) calibrating the EDP s through experimental tests 35 ; (ii) defining the critical points in the structure's pushover curve (e.g., ref. 61); or (iii) through monitoring the structural response subjected to incremental dynamic analysis, IDA 62 .…”

Section: Calibration Proceduresmentioning

confidence: 99%

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Damage assessment of unreinforced masonry buildings incorporating damage accumulation

Inarritu,

Kohrangi,

Bazzurro

2024

Earthq Engng Struct Dyn

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Recent earthquakes have shown susceptibility of unreinforced masonry (URM) buildings to damage accumulation in seismic sequences or long duration ground motions. Current structural modelling approaches commonly disregard the damage accumulation in URM buildings or they are unable to accurately capture this phenomenon unless sophisticated FEM models are employed. Such models are not feasible in risk‐based applications given the required large number of dynamic analyses needed to develop robust fragility and vulnerability curves. On the other hand, the common displacement‐based engineering demand parameters (EDP), such as inter‐story drift ratio, fail to capture the impact of damage accumulation in simpler, more manageable models. An alternative is to use advanced damage indices that are capable of monitoring the monotonic accumulation of damages. This study proposes a displacement‐ and energy‐based damage index that uses, as the basis, the Park and Ang damage index, modified and calibrated through experimental data of individual URM elements. Our calibration procedure maps the physical observed damage states to the hysteretic response of the elements. Consequently, damage on the individual elements is aggregated to define a global damage state at building level. Validation is carried out based on an equivalent frame model of a building tested on a shake table. Additionally, the model is subjected to multiple ground motions of seismic sequences and to long‐duration ground motions to evaluate the performance of the proposed damage index. In comparison with displacement‐based damage measures, the proposed damage index shows a superior ability to capture cumulative damage, even when simplified models are employed.

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Section: Park and Ang Damage Indexmentioning

confidence: 99%

Section: Calibration Proceduresmentioning

confidence: 99%

Damage assessment of unreinforced masonry buildings incorporating damage accumulation

Inarritu,

Kohrangi,

Bazzurro

2024

Earthq Engng Struct Dyn

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“…Researchers have utilized the Park and Ang DI concept for validation and have proposed various modified versions [29,[46][47][48][49][50][51]. Kunnath et al in 1992 [29] made the most significant modification to this DI by eliminating the recoverable deformation and using moment and curvature terms in place of force and displacement.…”

Section: Seismic Damage Indexmentioning

confidence: 99%

Cost and Damage Comparison of RC Frame Buildings Designed by IS Code and Unified Performance-Based Design Method

Das,

Choudhury,

Das

2024

Preprint

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Seismic design code of India follows the traditional forced-based approach for designing buildings to resist a lateral force representing the earthquake excitations. Owing to various limitations of this approach, there is a growing interest towards Performance-Based Design (PBD) when designing buildings for seismic events. The Unified Performance-Based Design (UPBD) is a new and advanced PBD approach capable of effectively designing buildings for specific performance levels and drift. Despite its potential benefits, the widespread adoption of PBD remains limited especially, in India. To address this gap, a comprehensive study was conducted to evaluate the effectiveness of two distinct design methodologies: the conventional force-based Indian Standard (IS) code method and the innovative UPBD approach. The study focused on analysing the cost implications and seismic damage outcomes of each method. Nine reinforced concrete frame buildings were initially designed using the IS code method, followed by detailed nonlinear analyses to assess their performance. Subsequently, the buildings are redesigned using UPBD to achieve equivalent performance levels and drift, setting a standardized benchmark for comparison. Cost is assessed based on the weight of concrete and steel, while a modified Park and Ang Damage Index is used to quantify damage. The research findings unveiled that buildings designed using the UPBD method exhibited lower overall costs and showcased reduced vulnerability to structural damage compared to those designed using the traditional IS code approach. The UPBD-designed buildings demonstrate superior performance metrics and potential cost savings, emphasizing the economic and structural benefits of adopting the UPBD method for seismic design.

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“…Using the presented method provides an opportunity to study concrete cracks through a mathematical viewpoint based on the new crack quantifying features from graph theory. Through this, the mechanical features (Park and Ang damage index [DI]—Carrillo et al., 2019; Williams & Sexsmith, 1995; Y. ‐J.…”

Section: Introductionmentioning

confidence: 99%

A graph‐based method for quantifying crack patterns on reinforced concrete shear walls

Bazrafshan

Basereh

et al. 2023

Computer aided Civil Eng

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This paper presents an innovative method to quantify damage based on surface cracks of reinforced concrete shear walls (RCSWs). The key idea is to use artificial intelligence and convert crack patterns to graphs. In this method, the mathematics of graph theory is used to extract information (graph‐based features) from crack patterns and use them for crack quantification. The proposed graph features are used in linear regression and leave‐one‐out cross‐validation to predict the mechanical features calculated for each RCSW: Park and Ang damage index and the dissipated energy. Among the three general stages of damage, which are safe, questionable, and not safe, this paper focuses on quantifying the second stage. To validate the approach, crack images of three RCSWs are used. The walls had different aspect ratios (0.54, 0.94, and 2.00) and were subject to quasi‐static cyclic loading. Regression results demonstrate low root mean squared errors and high coefficients of determination (R2 scores above 0.845). This proves the ability of the proposed graph‐based method in quantifying damage based on surface crack patterns.

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Damage assessment of squat, thin and lightly-reinforced concrete walls by the Park & Ang damage index

Cited by 17 publications

References 17 publications

Damage assessment of unreinforced masonry buildings incorporating damage accumulation

Damage assessment of unreinforced masonry buildings incorporating damage accumulation

Cost and Damage Comparison of RC Frame Buildings Designed by IS Code and Unified Performance-Based Design Method

A graph‐based method for quantifying crack patterns on reinforced concrete shear walls

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