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Showing 1 to 19 of 19 for “"Existing Reinforced Concrete"”.
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Flexural performance enhancement of existing reinforced concrete beams using CFRP
Reinforced concrete structures often require strengthening or retrofitting due to aging structural elements, revisions to design codes, or increases in service loads. This report evaluates the use of externally bonded carbon fiber reinforced polymer (CFRP) systems for strengthening reinforced …
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Natural frequencies evaluation on existing reinforced concrete bridges using microtremor testing
… natural frequencies of two different lengths of reinforced concrete bridges crossing Sungai Sembrong and Sungai Simpang Kiri. By using GEOPSY software, Fourier Spectra Amplitude Ratio (FSA) analysis used for determining bridge natural frequencies and Horizontal-To-Vertical-Spectra-Ratio (HVSR) …
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Strategies for Seismic Assessment of Common Existing Reinforced Concrete Bridges Typologies
… In particular, the assessment is performed on existing reinforced concrete (RC) bridges with a common structural scheme in Italy (multi-span simply supported girder bridges). The framework is set up of 6 steps and each step is investigated. Steps 1 and 2 are a sort of preliminary work before …
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Automated Generation of Geometric Digital Twins of Existing Reinforced Concrete Bridges
The cost and effort of modelling existing bridges from point clouds currently outweighs the perceived benefits of the resulting model. The time required for generating a geometric Bridge Information Model, a holistic data model which has recently become known as a "Digital Twin", of an existing …
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Seismic retrofit of existing reinforced concrete moment resisting frame structures using diagonal prestressing
The national building code of Canada (NBCC) has been under constant evolution since its first issue in 1941. Over the years, knowledge related to structural engineering and more specifically seismic response has continued to evolve through research and field investigations. Recently, the 2005 NBCC …
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Modelling the Post-Peak Response of Existing Reinforced Concrete Frame Structures Subjected to Seismic Loading
Structural members of reinforced concrete (R/C) buildings designed according to older, less stringent seismic codes are often vulnerable to shear or flexure-shear failure followed by axial failure. Thus, such substandard R/C structures are susceptible to vertical collapse, which pertains to the …
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Shear strengthening of RC beams using carbon fiber reinforced polymer laminates
… beam fails in flexure rather than in shear. Many existing reinforced concrete (RC) members are found to be deficient in shear strength and need to be repaired. Deficiencies occur due to several reasons such as insufficient shear reinforcement or reduction in steel area due to corrosion, increased …
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Performance of confined concrete columns under simulated life cycles
… fibers) have arisen as a method of retrofitting existing reinforced concrete structures to bring them up to current code standards of confinement and ductility. The development of stress-strain models for FRP confined concrete began with the adaptation of steel confinement models then progressed …
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Shear strengthening of pre-cracked and non pre cracked reinforced concrete continuous beams using bi directional CFRP strips
Shear failure of a reinforced concrete beam is catastrophic where it occurs suddenly and without any warning. The use of FRP sheet as a strengthening and repairing material is an effective method to enhance the shear capacity of the beam. Extensive researches have been conducted on the shear …
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Strengthening of Shear-Critical Reinforced Concrete Beams Using Iron-Based Shape Memory Alloys
Maintaining the sustainability and integrity of existing structures constantly subjected to severe environments is an important aspect, where deterioration and strength deficiencies of members could lead to sudden and unpredictable failures. Addressing such issues requires the use and development …
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Durability performance of frp strenghtened concrete beams and columns exposed to hygrothermal environment
… <p>DURABILITY PERFORMANCE OF FRP STRENGHTENED CONCRETE BEAMS AND COLUMNS EXPOSED TO HYGROTHERMAL ENVIRONMENT</p> <p>by</p> <p>ABULGASEM M. ELARBI</p> <p>August 2011</p> <p>Advisor: Dr. Hwai-Chaung Wu</p> <p>Major: Civil and Environmental Engineering (Structural Engineering)</p> <p>Degree: …
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Rehabilitation and Strengthening of Reinforced Concrete Columns with Iron-Based Shape Memory Alloys
… and strengthening of deteriorating concrete structures has promoted the evolution of applications of smart materials. Smart material such as Shape Memory Alloys (SMA) have been used as solution methods to tackle such concerns, as a more efficient and durable form of strengthening …
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Seismic Evaluation of Reinforced Concrete Columns and Collapse of Buildings
There are a large number of reinforced concrete (RC) buildings in seismically active areas of the world that are not designed and constructed in accordance with modern seismic design provisions. These buildings are vulnerable to severe damage or collapse due to their low lateral displacement …
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Effect of Corrosion on the Behavior of Reinforced Concrete Beams Subject to Blast Loading
Corrosion of reinforcing steel embedded in concrete due to the presence of moisture, aggressive chemicals, inadequate cover, and other factors can lead to deterioration that substantially reduces the strength and serviceability of the affected structure. Accounting for corrosion degradation is …
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Safety and sustainability of school buildings
L'abstract è presente nell'allegato / the abstract is in the attachment
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Non-linear analysis and dynamic monitoring methods for the safety assessment of bridges and viaducts
L'abstract è presente nell'allegato / the abstract is in the attachment
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Optimization of timber-based strengthening techniques for the seismic retrofit of existing masonry buildings
… for the seismic and energy retrofit of unreinforced masonry (URM) buildings considering various case scenarios and evaluating both the mechanical and the energetic performance of the intervention. Timber engineered products were employed as base components for the retrofit intervention. …
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Axial compressive behaviour of FRP-confined high-strength concrete
External confinement of concrete columns with fibre-reinforced polymer (FRP) sheets has been shown to lead to significant improvements on the axial compressive behaviour of these columns. This application of FRP composites is effective as a confinement material for concrete, in both the seismic …