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 20 of 54 for “"steel frame"”.
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Identification of Physical Changes to a Steel Frame
… a change to the mass or stiffness of a steel frame. Physical testing was performed using an accelerometer, linear shaker, and arbitrary function generator. Two methods of laboratory testing were developed: ambient vibration testing (AVT) and forced vibration testing (FVT). AVT was able …
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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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A Study of the Seismic Performance of Early Multi-Story Steel Frame Structures with Unreinforced Masonry Infill
Steel frame construction with unreinforced masonry infill walls is a common system found in high-rise structures built in the late nineteenth and early twentieth centuries. Recorded performance of this dual system during seismic events shows that the structures are able to resist a high level of …
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Topology optimization of building bracing schemes
… economical solutions for conventional structural steel frames using topology optimization on the lateral bracing scheme. The study focuses mainly on minimizing the amount of material used and optimizing the placement of bracing elements in typical steel frame structures to achieve economical and …
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Applying "Design for Disassembly" to connection design in steel structures
… the materials loop. The author focuses on steel-frame buildings, which are among the best candidates for reuse because of the versatility and durability of individual steel members. An outline of the major principles of DfD singles out successful connection design as one of the most …
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Characterization of adhesively bonded joints using bulk adhesive properties
… of the joint is a rectangular solid section steel frame to which an SMC panel is bonded using Ashland Chemical urethane based adhesives. Due to computer time constraints and problem complexity, a complete analysis including a time dependent, viscoelastic analysis was not possible. The linear …
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A program for the automatic plastic design and analysis of plane steel frames
… and realistic structural design of plane steel frames has brought plastic methods of analysis to the fore. Though not commonly used in South Africa, plastic methods have been adopted elsewhere, particularly in the United States. An incremental approach is presented, leading to the …
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Material impacts on operational energy usage
… Chicago. A comparison was conducted between a steel frame and concrete frame structure, showing how the differing thermal mass impact energy usage. An investigation was also undertaken to better understand thermal bridging in concrete commercial building envelopes and the impact they have.
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The Brick Panel
… has been developed. Each panel consists of a steel frame, within which the bricks are stacked and bound together. Metal rods hold the bricks in place horizontally, while metal spacers maintain the correct vertical positioning. The panels are hung onto a steel grid and bound together to form …
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Vibration-based finite element model updating and structural damage identification
… on the basis of the validated numerical model. A steel frame model structure was constructed in the laboratory for finite element model updating and structural damage detection. Forced vibration testing was undertaken on the model structure and dynamic response such as accelerations were measured …
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A Bayesian statistics approach to updating finite element models with frequency response data
… with a simulated free-free beam, a simple steel frame, and a cantilever beam. Improved finite element models of the structures are obtained and several statistical tests are used to ensure that the models are improved.
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Analytical and experimental investigation of a flush moment end-plate connection with six bolts at the tension flange
… connection configuration which is used in steel frame construction. The limit states of plate yielding and bolt fracture were analyzed using yield-line theory to predict endplate thicknesses and a split-tee analogy to develop a method to predict bolt forces. Five experimental tests were …
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LOCATION AND CONFIGURATION OF REDUCED BEAM SECTION CONNECTION EFFECTS ON STRENGTH, STIFFNESS AND DUCTILITY OF MOMENT STEEL FRAMES
Moment resistant frames are mainly used in resisting lateral loads in buildings. During the 1994 Northridge Earthquake, some of these moment steel frame connections could not undergo inelastic deformation which led to many structural damages. New connection systems were proposed and tested which …
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Study of base isolation systems
… A 90 feet high, 6 stories tall, moment steel frame structure with tension cross bracing is used to compare the response of both fixed base and base isolated schemes to severe earthquake excitations. Techniques for modeling the superstructure and the isolation system are also described. …
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Seismic design and analysis of hybrid masonry with fuse connectors
… composed of reinforced masonry panels within a steel frame; currently, the application of this system has been limited to low seismic regions where wind loads tend to control the design of the lateral force resisting elements. To establish a fundamental understanding of seismic behavior for …
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ΠΕΙΡΑΜΑΤΙΚΗ ΜΕΛΕΤΗ ΑΝΑΓΕΝΝΗΣΗΣ ΜΕΤΑ ΑΠΟ ΧΕΙΡΟΥΡΓΙΚΗ ΕΚΤΟΜΗ ΤΗΣ ΓΩΝΙΑΙΑΣ ΑΠΟΦΥΣΗΣ ΤΗΣ ΚΑΤΩ ΓΝΑΘΟΥ ΣΤΟ ΚΟΥΝΕΛΙ
… RECONSTRUCTION WITH THE USE OF A STAINLESS STEEL FRAME ACCURATELY INSERTED. THE COURSE OF DEVELOPMENT OF THE REGENERATED MANDIBULAR ANGULAR PROCESS WAS STUDIED. OTHER ASPECTS, THAT WERE CONSIDERED, WERE THE POSSIBLE SIGNIFICANCE OF AGE IN THE REGENERATION OF THE MANDIBULAR ANGULAR PROCESS OF …
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Time history analysis of axial forces (Pass Through Forces) at joints in a braced frame
… This generates a phenomenon at every joint of a frame called "Pass Through Force". Pass through forces come from the transfer of axial forces between two side by side members. Adding a bracing scheme to our frame will introduce even more pass through forces at the node since part the force in the …
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Seismic retrofitting of deficient Canadian buildings
… buildings, flat slab concrete buildings and steel frame buildings. It then presents the most common retrofitting strategies applicable to low-rise buildings commonly found in major Canadian cities. A case study assessing the performance of hybrid base isolation systems is then presented. The …
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Experimental and analytical study of variable fluid damper and stiffness device
… of incorporation of such a device into a framed structure. The damper properties are determined under cyclic and ramp loadings, and the results are presented. Further experimental research is performed to evaluate the effectiveness of the afore mentioned device in a proposed Scissor-Jack …
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