Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"Self-centering"”.
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Bio-Inspired Segmented Self-Centering Rocking Frame
This paper investigates the development, design and modeling of a human spine-inspired seismic lateral force resisting system. The overall goal is to create a design for a lateral force resisting system that reflects human spine behavior that is both practical and effective. The first phase of this …
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Innovative Self-Centering Connection for CCFT Composite Columns
… also possess potential capability to develop self-centering system, which has many merits in seismic design. The goal of this research is to develop a new connection configuration between circular concrete filled steel columns and conventional W steel beams. The new connection configuration is …
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Development of the low damage self-centering Sliding Hinge Joint
… and improve the SHJ and AFC, and develop a self-centering version of the SHJ (SCSHJ). AFC specimens with shims made of three steel grades were tested to determine the influence of shim hardness on the frictional performance. Abrasion resistant steel, the hardest material tested with a …
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Experimental and Computational Investigation of a Self-Centering Beam Moment Frame (SCB-MF)
… been significant advances in the development of self-centering (SC) seismic force resisting systems. However, examples of SC systems used in practice are limited due to unusual field construction practices, high initial cost premiums and deformation incompatibility with the gravity framing. A …
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Development and experimental validation of self-centering buckling-restrained braces with shape memory alloy
… that return to their initial position (i.e., “self-center”) following an earthquake and minimize structural damage is a crucial need. The research presented in this thesis aims to address this need by creating an innovative self-centering brace for advanced seismic performance. In the present …
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Seismic Response of Short Period Structures and the Development of a Self-Centering Truss Moment Frame with Energy Dissipating Elements for Improved Performance
… behavior of short period structures. Next, a new self-centering system that builds on the concepts of previous self-centering systems is developed. The self-centering truss moment frame (SC-TMF) was developed with the goal of providing self-centering capability while concentrating inelastic …
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Behavior of Post-Tensioning Systems Subjected to Inelastic Cyclic Loading
… (PT) strands have been employed in a number of self-centering seismic force resisting systems as part of the restoring force mechanism which virtually eliminates residual building drifts following seismic loading. As a result of the PT strands large elastic deformation capability, they have been …
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Large-Scale Cyclic and Hybrid Simulation Testing and Development of a Controlled-Rocking Steel Building System with Replaceable Fuses
… combined in parallel to create a flag-shaped self-centering load-deformation response. A large-scale experimental program was then conducted in the MUST-SIM facility at the University of Illinois at Urbana-Champaign including quasi-static cyclic and hybrid simulation tests. Nine specimens were …
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Blast Performance of Hybrid GFRP and Steel Reinforced Concrete Beams
… promises to address these limitations through self-centering behavior that provides reductions in residual damage and enhancements in flexural performance. This thesis presents the results of an experimental and analytical investigation on the effect of hybrid arrangements of glass fiber …
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High-performance braces for seismic design
… the buckling-restrained brace frame, (ii) the self-centering energy dissipating brace frame, and (iii) the hybrid brace frame, with regards to their structural performance and economy. The primary goal of the thesis is to provide useful insights into the current developments of high-performance …
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The Resilient Micro Flyer: a New Collision-tolerant Autonomous Robot
… and d) the direct mechanical feedback-based self-centering and smooth traversal of very tight spaces based on its elastic flaps. The final system prototype is capable of 14 of endurance and weighs less than 500g. A comprehensive experimental study is presented in which the robot is tasked to …
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Advanced Seismic Design of Innovative Precast Systems for Structural Response Control
… provided the elastic behavior, guarantee re-centering capacity, removing any residual deformation. The well-defined deformation pattern and the dissipation capacity concentration in external metallic energy dissipators give to the structure a reliable dissipation capacity, easily replaceable …
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Seismic Performance of Square Nickel-Titanium Reinforced ECC Columns with Headed Couplers
… Shortening the length of SMA did not affect the self-centering capability of the column. The drift capacities of the SMA/ECC columns were at least 33% higher than that of the steel RC column. ECC was effective in minimizing damage to the plastic hinge. Damage in the SMA/ECC columns was limited to …
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Investigation of Modular Cross-Laminated Timber Rocking Walls and Rocking Wall -- Light-Frame Shear Wall Dual Systems for Seismic Resilience
… were considered, including wall aspect ratio and self-centering ratio to evaluate their effects on the wall's backbone and cyclic behavior. Friction dampers integrated at the base connections provided supplemental damping while maintaining fabrication simplicity. Predictive equations and nonlinear …
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Assessment of Foundation Rocking Behavior in Reducing the Seismic Demand on Horizontally Curved Bridges
… Rocking foundations have been shown to have self-centering capabilities in addition to adding damping to the system provided competent soil condition exist. Previous research conducted experiments on the effect of rocking foundations on column damage through single pier testing without …