A sustainable environment can be achieved by strengthening the existing building to avoid new construction and replacing materials with long-lasting such as a fiber-reinforced polymer (FRP). Using post-tensioned (PT) FRP systems has proven an effective technique in structure decreasing cracks deformability. In this study, 3-D finite element model was built investigate flexural behavior of compo...

In this preliminary study, the complexity of the corrosion phenomenon of post-tensioning strands in grouted anchorage assemblies was examined and both physicochemical and electrochemical key technical issues were identified. Measurements of oxygen reduction efficiency in high pH electrolytes were conducted to obtain polarization parameters to be used in modeling. The time evolution of electrica...

This submission presents the results of a preliminary numerical study of an un-tensioned spiral-strand cable subjected to explosively formed fragment impact. An effective approach to generate finite element models of multi-layer spiral-strands with complex contact conditions has been devised. The modified Johnson-Cook model coupled with the Cockcroft-Latham fracture criterion was used to model ...

The concept of cold-formed light steel framing construction has been widespread after understanding its structural characteristics with massive research works over the years. Connection serves as one of the important elements for light steel framing in order to achieve its structural stability. Compared to hot-rolled steel sections, cold-formed steel connections perform dissimilarity due to the...

The purpose of this research was to evaluate the nonlinear dynamic response of rigid and semi-rigid steel frames under Far-Fault Earthquake Records. Accordingly, the fragility curve of the moment frames with rigid and semi-rigid connections was determined. Considering the analytical knowledge of structures in the past, the analysis and design of steel frames based on the assumptions of rigid or...

The addition of a rocking structural system will soften the connection between foundation and superstructure help beam-column connections to become softer than typical ones. These structures, with systems, follow elastic gap opening mechanism seismic response. Post-tensioned prestressed tendons dampers are used in systems enable structure return its initial position (self-centering) dissipate e...

One of the typically damaged steel beam-column connection during the Northridge earthquake of 1994 was bolted-web, welded-flange (BWWF), now known as “pre-Northridge” connection. Proposed post-Northridge connections are more ductile and capable of dissipating more energy, thus improving the behavior of steel moment resisting frames (SMRF). The post-Northridge connections with added ductility wi...

Recently, steel structures have been accounted for a large percentage of the buildings due to their advantages such as higher execution speed and easier construction. In steel structures, welded joints are commonly used and their quality plays a key role in stability of buildings under applied loads. Hence, to increase resiliency of welded steel structures against natural hazards, welded joints...

This paper evaluates the potential of novel steel column bases to reduce residual drift risk buildings located at near-fault regions when installed post-tensioned self-centering moment-resisting frames (SC-MRFs). To this end, a prototype building is designed that consists either conventional (MRFs) or SC-MRFs equipped with base (SC-MRF-CBs). The MRFs and are used as benchmark frames. modelled i...