Probabilistic Seismic Risk Assessment of a reinforced concrete …
The application is tested for a particular reinforced concrete (RC) hospital building located at Silchar city in northeast India, based on the uncertainty embedded in site-specific hazard analysis (Roy et al., 2023a) and its resulting damage (2023b; Roy et al., 2021). The hospital building is chosen based on the fact that it takes care of ...
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Numerical simulation of reinforced concrete slab subjected to …
Reinforced concrete slab occurs to perforated damage between the upper and bottom surface. Damage process of the reinforced concrete slab is shown in Fig. 7. Download: Download high-res image (521KB) Download: Download full-size image; Fig. 7. Spall damage process of the reinforced concrete slab (0.55 kg/0.4 m Test IV).
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Safety assessment of existing prestressed reinforced concrete …
The assessment of existing reinforced concrete (RC) structures, especially, bridges and viaducts, nowadays is one of the most relevant aspects for infrastructural engineers. Due to the old age of a large part of the railways and roadways assets, their safety, especially, with respect to the Ultimate Limit States (ULS) may result …
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Testing and modelling the flexural response of reinforced …
1.Introduction. Reinforcement corrosion is one of the most widespread and impactful deterioration mechanisms affecting the performance of existing reinforced concrete …
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On the robustness to corrosion in the life cycle assessment …
Abstract Management of existing structures has traditionally been based on condition assessment, based on visual inspections, disregarding the susceptibility of different structural types to aging and deterioration. Robustness, as a measure of the effects of unpredictable damage to structural safety can be a complementary information to the …
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Durability of Reinforced Concrete
When looking at degradation problems in reinforced concrete, the two main materials, the concrete and the reinforcing steel, are what impact the durability of the structure. The symbiotic relationship between reinforced concrete and steel ensures that, if defects exist within the original design or material selection and if load factors that ...
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Seismic Evaluation of Existing Reinforced Concrete …
Seismic Evaluation of Existing Reinforced Concrete Building. Dinesh J.Sabu 1, Dr. P.S. Pajgade 2. ABSTRACT: The recent earthquakes have exposed the vulnerability of the existing reinforced concrete buildings in India. The Bhuj earthq uake (2001) saw a great deal of damage to multi-storey buildings in the urban area of Gujarat.
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A review on corrosion detection and protection of existing reinforced
The passive film of steel in concrete is mainly disrupted under these two situations: when the chloride ion concentration near the rebar surface reaches a certain critical value, and when the pH of concrete drops below nine due to concrete carbonation [33], [34], [35]. The basic aspects related to these two corrosion causes will be …
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Seismic upgrading of existing reinforced concrete …
1. Introduction. In most regions of the developed world, the building stock has already started to age considerably. Within the European Union for example, 80% of the buildings were built before the 90's, 40% before the 60's, with a third of buildings over 50 years old [1].The impact of the old building stock on the environment is huge as …
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Review on the mechanism and mitigation of cracks in concrete
Reinforced concrete (RC) constructions' service lives can be divided into three categories (see Fig. 4): Rebar depassivation starts, concrete cover cracks, and the breadth of the surface crack reaches a crucial number.While the second and third criteria are established by physical methods of the concrete reaction to corrosion expansion, …
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Effect of Damage on Vibration Characteristics of Reinforced Concrete
p>Reinforced concrete (RC) deck slabs are often observed to be deteriorated due to reinforcement corrosion leading to horizontal cracks within the slabs which are difficult to judge by visual ...
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Assessing damage and collapse capacity of reinforced concrete
The capabilities of this new element formulation are herein compared with those of modeling strategies employing existing displacement-based (DB) and FB distributed-plasticity frame elements commonly used to model softening systems. ... The differences between the fragility curves obtained from the three MAs for the column …
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Advances in Reinforced Concrete Integrity and Failure
The chapter provides insights into methods for the analysis and assessment of reinforced concrete structures, discussing non-destructive testing methods, …
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Seismic Assessment and Retrofit of Reinforced Concrete …
Existing reinforced concrete buildings constructed before the development of modern seismic design provisions represent one of the largest seismic safety concerns …
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Seismic fragility assessment of existing sub-standard low …
An analytical seismic fragility assessment framework is presented for the existing low strength reinforced concrete structures more common in the building stock of the developing countries. For realistic modelling of such substandard structures, low strength concrete stress-strain and bond-slip capacity models are included in calibrating …
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Seismic Behavior of Demountable Reinforced Concrete (RC) …
In this paper, a new type of assembled RC beam–column joint with a beam-end steel cover-plate connection is proposed to achieve seismic toughness and damage control of the joint. Energy-dissipation plates with different structural forms are proposed, and a series of seismic performance indexes of the joints are calculated and analyzed …
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Assessing the Collapse Risk of California's Existing Reinforced
The collapse assessments are also extended to provide estimations of earthquake-related fatalities in existing and modern reinforced concrete frame structures. These metrics of earthquake-induced collapse, losses and fatalities are used to evaluate the effectiveness of replacement and retrofit strategies for mitigating hazards posed by ...
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Interpretable Machine Learning for Assessing the Cumulative Damage …
Recently developed Machine Learning (ML) interpretability techniques have the potential to explain how predictors influence the dependent variable in high-dimensional and non-linear problems. This study investigates the application of the above methods to damage prediction during a sequence of earthquakes, emphasizing the use of …
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Reinforced concrete long-term deterioration prediction for …
Each different damage index is calculated as per equation (1), considering only those damages indicated in Table 1.. 3.2. Completeness index. As it has been stated in Section 2, the precision of the deterioration prediction of any RC bridge can be estimated by calculating the Pearson correlation coefficient (R) of the linear expression defined by …
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Seismic Performance of Reinforced Concrete (RC) Frame
Abstract. The provision of a haunch in beams reduces self-weight, increases shear capacity at support, and enhances joint performance. The present study …
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(PDF) A review on reinforced concrete beam column joint: …
Reinforced concrete frames are commonly used systems in buildings. The philosophy behind the proper design for this type of frames is to provide them with sufficient ductility.
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Load Testing Techniques for the Strength Evaluation of Existing …
Evaluating the condition of existing reinforced concrete structures is generally undertaken if the integrity of a structure is in question or if there is concern regarding the structure meeting ...
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Residual Life Assessment of Concrete Structures-A Review
Evaluating fracture energy and size effect in concrete structures requires special specimens. Assessing concrete damage via non- destructive test methods based on concrete colorimetry, ultrasounds and x-rays, as well as linking concrete fresh-state properties to those after hardening are bringing in advanced techniques.
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Seismic Vulnerability of Reinforced Concrete Frame …
This research focuses on examining the seismic fragility of reinforced concrete frames that exhibit mass irregularities in the elevation or plan caused by the change in structural usage. For accurate vulnerability evaluation, this research employs comprehensive three-dimensional models of reinforced concrete irregular structures.
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A scaled test on the damage and vibration behavior of reinforced …
In the outer side of the NPP model, concrete damage area caused by steel clasp is not included in the concrete damage area caused by the aircraft model impact. From Fig. 14 (b), the dimensions of the damage of the inner side of the NPP model are 1850 mm and 800 mm in the horizontal and vertical directions, respectively. After the …
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Seismic upgrading of existing reinforced concrete …
DOI: 10.1016/J.ENGSTRUCT.2021.112273 Corpus ID: 236255673; Seismic upgrading of existing reinforced concrete buildings: A state-of-the-art review @article{Gkournelos2021SeismicUO, title={Seismic upgrading of existing reinforced concrete buildings: A state-of-the-art review}, author={P. D. Gkournelos and Thanasis …
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Fuzzy Logic Based Condition Rating of Existing Reinforced Concrete
Fuzzy logic is a means for modeling the uncertainty involved in describing an event/result using natural language. The fuzzy logic approach would be particularly useful for remedying the uncertainties and imprecision in bridge inspectors' observations. ...
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Probabilistic methods for the estimation of potential seismic damage …
In this study, three alternative probabilistic approaches are presented in order to estimate potential seismic damage to existing reinforced concrete buildings in Turkey. In order to assess the damage estimations obtained from these three methods, the results are expressed in terms of mean damage ratios and compared with each other.
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Experimental and theoretical investigations of the existing reinforced
The experimental and theoretical investigations of the existing reinforced concrete frame (RCF) retrofitted with a novel external retrofitting sub-structure, self-centering precast bolt-connected steel-plate reinforced concrete buckling-restrained brace frame (SC-PBSPC BRBF), are presented in this paper.
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Seismic design of three damage-resistant reinforced concrete …
Recent studies have shown that the innovative shear walls detailed with a type of self-centering reinforcement and fiber reinforced concrete are effective in reducing the permanent displacement and concrete damage compared to conventional concrete (RC) shear walls. However, more investigation is required into the seismic design parameters, …
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