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.
Results
Showing 1 to 17 of 17 for “"buckling-restrained"”.
-
Seismic stability of buckling-restrained braced frames
Buckling Restrained Braced Frames (BRBFs) are widely used as a seismic force-resisting system due to their advantageous properties for ductility and energy dissipation. However, because of the modest overstrength and relatively low post-yielding stiffness, BRBFs subjected to seismic loading may be …
-
Buckling-Restrained Braced Frame Connection Design and Testing
… designed, the beam-column-brace connections of buckling-restrained braced steel frames have undesirable failure modes that compromise the integrity and performance of the frames and are costly to repair. To decrease the time and resources needed to repair the frames following an earthquake, a …
-
Effect of Beam Splicing on Seismic Response of Buckling-Restrained Braced Frames
The deformation capacity of typical buckling-restrained braced frames (BRBFs) is limited by the rotation capacity of connecting regions. The rotation capacity of the connection region is limited by fracture of the gusset welds and yielding in the beams and columns. A different connection detail …
-
Development and experimental validation of self-centering buckling-restrained braces with shape memory alloy
… behavior and performance of self-centering buckling-restrained braces (SC-BRBs) using shape memory alloys (SMAs) is investigated. The SC-BRBs consist of a typical BRB component, which provides energy dissipation, and pre-tensioned superelastic NiTi shape memory alloy rods, which provide …
-
Nonlinear Finite Element Modelling of Reinforced Concrete Frames Retrofitted with Shape Memory Alloy Buckling Restrained Braces
… research aims to investigate the benefits of Buckling-Restrained Braces (BRBs) as a retrofit technique for accommodating seismic demands in seismically deficient reinforced concrete frames, the dominant structural system of pre-1970s construction. The efficiency of Superelastic-Shape Memory …
-
Development, Analysis and Testing of a Hybrid Passive Control Device for Seismic Protection of Framed Structures
… rubber (HDR) sandwich damper in series with a buckling restrained brace (BRB). The HPCD provides energy dissipation at small deformations without significantly decreasing the structural period. The significant energy dissipation capacity of a BRB is provided for significant seismic events in …
-
A performance based approach for seismic design with hysteretic dampers
… damage due to strong ground motion is the use of buckling restrained braces that dissipate energy by hysteretic behavior. Research conducted in the past reveals that devices such as The Unbonded Brace (TM) provide stiffness and damping to the structure, two key parameters that characterize a …
-
A Comparison of Optimized Nonlinear Time History Analysis and the Equivalent Lateral Forces Method for Brace Design
… the development of a design procedure for buckling-restrained braced frames (BRBF's). This procedure uses nonlinear time history analysis and a formal optimization algorithm. The time history analysis includes an elasto-plastic model for the braces. The optimization algorithm is a genetic …
-
Performance-Based Analysis of a Reinforced Concrete Shear Wall Building
… frames, special concentric braced frames, and buckling restrained braced frames for their primary lateral systems. The results showcase expected seismic performance levels for a commercial office building designed in a high seismicity region with varying structural systems and when using …
-
High-performance braces for seismic design
… types of high-performance braces: (i) 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 …
-
Weighing the Financial and Sustainable Benefits of High Performance Structures in Seismically Active Regions
… system of a four-story structure utilizing buckling restrained braced frames was designed to meet code-level requirements per the American Society of Civil Engineers’ <em>Minimum Design Loads for Buildings and Other Structures </em>(ASCE 7-05) and again to meet the immediate occupancy …
-
Hybrid Steel Frames
… two new structural steel systems: hybrid Buckling Restrained Braced Frames (BRBF) and hybrid steel Moment Frames (MF). The "hybrid" term for the BRBF system comes from the use of different steel material including carbon steel (A36), high-performance steel (HPS) and low yield point (LYP) …
-
Performance Assessment of Seismic Resistant Steel Structures
… study, two innovative systems, which are hybrid buckling restrained braces and collapse prevention systems, are compared to their traditional counterparts using a combination of the FEMA P-695 and FEMA P-58 methodologies. Additionally, an innovative modeling assumption is investigated, where …
-
Application of New Materials and Innovative Detailing for Reinforced Concrete Structures
… as external energy dissipaters, entitled as buckling restrained reinforcement (BRR) in the present study. The test results showed that the compressive strain of BRR at the peak stress can exceed 5%, which will be sufficient in most practical cases since the strain of compressive reinforcement …
-
An Investigation of the Behavior of Structural Systems with Modeling Uncertainties
… damping models. Three frames, a four-story buckling restrained braced frame, a four-story steel moment resisting frame, and an eight-story steel moment resisting frame, are compared using two geometric nonlinearity approaches and five Rayleigh damping models. Static pushover analyses are …
-
Computational and Experimental Study on the Behavior of Diaphragms in Steel Buildings
… behavior and performance of steel buildings with buckling restrained braced frames that considers different diaphragm design approaches and diaphragm inelasticity using nonlinear three-dimensional (3D) computational models; and 4) an experimental study that investigated the in-plane behavior of …
-
Experimental assessment of the mechanical behavior of immersion joints and a seismic mitigation method in immersed tunnels
… to immersion joints. To achieve this, a buckling energydissipation device (BEDD) on the basis of the Buckling Restrained Brace (BRB) was introduced and a detailed design procedure for the seismic mitigation device in the joint was provided supposing that the device can work in …