Advances in repair/retrofit/strengthening, design and analysis of structures : held at the ACI Concrete Convention 2023, San Francisco, California, USA, 2-6 April 2023 /
With the aging and deterioration of infrastructure, the need for repair, strengthening and rehabilitation of existing structures continues to increase. Climate change makes extending the service life of our infrastructure critical since any demolition and new construction will trigger substantial am...
| Corporate Authors: | , , |
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| Other Authors: | |
| Format: | Book |
| Language: | English |
| Published: |
Farmington Hills, Michigan :
American Concrete Institute,
[2023].
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| Series: | Publication SP ;
358. |
| Subjects: |
| Summary: | With the aging and deterioration of infrastructure, the need for repair, strengthening and rehabilitation of existing structures continues to increase. Climate change makes extending the service life of our infrastructure critical since any demolition and new construction will trigger substantial amounts of carbon emissions. Research related to repairing and strengthening existing infrastructure is seeing major developments as new green materials and technologies become available. Improved assessment and retrofit of deficient structures and performance based design of new structures are also in high demand. Despite the progress, there are many challenges yet to be addressed. The main objective of this Special Publication is to present results from recent research studies (experimental/numerical/analytical) on the retrofit and repair of structural elements along with the assessment, analysis and design of structures. Several of these papers were presented at the ACI Fall Convention "Seismic Repair/Retrofit/Strengthening of Bridges at the Element or System Level: Parts 1 and 2." The presented studies cover various aspects of structural retrofitting and strengthening techniques, including the use of rubberized engineered cementitious composite for enhancing the properties of lightweight concrete elements, high-performance concrete jacketing to strengthen reinforced concrete piers/columns, and the behavior of fiber-reinforced polymer-wrapped concrete cylinders under different environmental conditions. Additionally, the research explores the behavior of concrete-filled FRP tubes under axial compression, innovative bridge retrofit technologies, and retrofit techniques for deficient reinforced concrete columns. There is also a focus on evaluating the seismic response of retrofitted structures, designing guidelines for seismic retrofitting using tension-hardening fiber-reinforced concrete, strengthening unreinforced masonry walls with ferrocement overlays and developing seismically resilient concrete piers reinforced with titanium alloy bars. The seismic response of a retrofitted curved bridge was also presented where elastomeric bearings of the as-built bridge were replaced by high damping rubber bearings as a part of the seismic retrofit. Recommendations for nonlinear finite element analysis of reinforced concrete columns under seismic loading are also presented to simulate their behavior up to collapse. Overall, the presented studies in this Special Publication demonstrate the potential of new materials, methods and technologies to improve the performance of various structural elements under different loading conditions, including seismic and environmental loads. These studies are expected to help our practitioners and researchers not only develop more effective and sustainable methods for repairing and strengthening of structures but also improve their analysis and design skills. |
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| Physical Description: | 250 pages : illustrations ; 28 cm. |
| Bibliography: | Includes bibliographical references. |
| ISBN: | 1713892529 9781713892526 |