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 15 of 15 for “"Steel Moment Frame"”.
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Effect of Viscous Fluid Dampers on Steel Moment Frame Designed for Strength and Hybrid Steel Moment Frame Design
… viscous fluid dampers on a nine story special steel moment frame designed for strength in Seattle. At the initial stages of the work, knowing the fact that moment frames are almost always controlled by drift, it was thought that two different moment frames, controlled by strength or controlled …
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Redundancy in Steel Moment Frame Systems Under Seismic Excitations
Finally, a framework is proposed for evaluation of structural redundancy against incipient collapse limit state. In this framework: (1) the maximum column drift ratio (MCDR) or biaxial spectral acceleration (BSA) is used to measure both demand and capacity of a given building; (2) the demand and …
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Structural Redundancy of Dual and Steel Moment Frame Systems Under Seismic Excitation
The proposed uniform-risk redundancy factor is then compared with the reliability and redundancy factor (rho) in the 1996 SEAOC Blue Book, NEHRP 97, and UBC 97, which depends on the system configuration only. The results show the inadequacies of the latter approach in describing the redundancy of a …
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Development of Multiobjective Optimization Procedures for Seismic Design of Steel Moment Frame Structures
… optimization of code-compliant regular plane steel special moment resisting frame structures with simultaneous as well as separate treatment of multiple objective functions that reflect steel material usage, initial expenses, degree of design complexity, seismic structural performance indices, …
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Using Incremental Dynamic Analysis to Visualize the Effects of Viscous Fluid Dampers on Steel Moment Frame Drift
… dampers in controlling the interstory drift in steel moment frames, and the use of incremental dynamic analysis as a method of visualizing the behavior of these moment frames when subjected to seismic load effects. Models of three story and nine story steel moment frames were designed to meet …
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Evaluating the Effect of Decking Fasteners on the Seismic Behavior of Steel Moment Frame Plastic Hinge Regions
A series of full-scale beam-to-column moment connection tests were completed to determine the effects of powder actuated fasteners (PAF) and puddle welds on the seismic behavior of steel moment connections. In seismic regions, PAF are currently prohibited in the connection region (referred to as …
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Multi-hazard performance of steel moment frame buildings with collapse prevention systems in the central and eastern United States
… the focus of this study is on structural steel-frame buildings using either non-ductile moment frames with fully-restrained flange welded connections not specifically detailed for seismic resistance, or ductile moment frames with reduced beam section connections designed for moderate …
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Seismic Rehabilitation of Steel Moment Frames Vulnerable to Soft-Story Failures Through Implementation of Rocking Cores
<p>During seismic events, inefficient steel moment frame building systems may exhibit soft-story failures. This thesis focuses on development and validation of a seismic retrofit strategy for avoiding soft-story failures in low-rise and mid-rise steel moment frame buildings. The considered retrofit …
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Development, Analysis and Testing of a Hybrid Passive Control Device for Seismic Protection of Framed Structures
… study using hybrid devices in a 9-story steel moment frame structure. The devices were found to provide improved response over a special steel moment frame and a moment frame combined with a buckling restrained brace frame.
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An Algorithm and Methodology for Static Response Based Damage Detection in Structural Systems
… a new finite element that better models reduced moment resistance in connections. The new element is derived from elementary principles and is very well suited for optimization. The research attempts to utilize experimental test data whenever possible. When test data is not available, efforts are …
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Development of Hybrid Fire Simulation Methods and Their Applications to Column Fire Tests
… issues are discussed in detail in this thesis. A steel moment frame was selected as a reference structure for the validation tests. The proposed methods were applied for parametric studies of steel columns and reinforced concrete columns to investigate the effect of load ratio and the axial …
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Beam Mechanism Failure in Multistory Steel Frame Structures
… this thesis predicts the performance of steel moment-frame structures of varying bay geometries, proposing deflection fields to inform modern practice in all phases of project development. Instead of numerical simulations, the process follows an analytical approach based in the …
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Quantifying the Life Cycle Benefits of Performance-Based Design in Sustainable Design
… 7-05 designed base model building (six-story, steel moment frame, office located in San Francisco) was designed to meet the minimum requirements of the LS or stricter code requirements of the IO performance objectives, respectively. Performance levels were verified using the ASCE 41-06 linear …
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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
… systems is developed. The self-centering truss moment frame (SC-TMF) was developed with the goal of providing self-centering capability while concentrating inelastic deformation in replaceable structural fuses. These goals are accomplished while mitigating a number of issues seen in other …
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Modeling and Behavior of the Beam/Column Joint Region of Steel Moment Resisting Frames
… and yielding on the stiffness and strength of steel moment resisting frames (SMRF) has been the topic of numerous papers over the past thirty years. When properly detailed, the PZ is an excellent source of energy dissipation, even under large inelastic deformations. Due to these large inelastic …