To reduce carbon emissions, holistic approaches to design, plan, and build our environment are needed. Regarding multi-story residential buildings, it is well-known that (1) material choices construction typologies play a fundamental role in the reduction of footprint, (2) shifting from concrete timber will significantly (3) building designed be disassembled increase potential achieving zero-ca...

the present study sets out to integrate the performance-based seismic design approach with the connection topology optimization method. performance-based connection topology optimization concept aims to simultaneously optimize the size of members and the type of connections with respect to the framework of performance-based seismic design. this new optimization concept is carried out for unbrac...

External installation of steel braces is an effective approach to increase the lateral load resistance moment-resisting frames. However, effects existence on robustness frames resist progressive collapse still not clear because little study has been carried out. To fill this gap, in paper, six multistory subframes (three bare and three braced frames) were fabricated tested. Test results indicat...

A simplified method is proposed for evaluating the stability of multistory, steel, semibraced, and unbraced frames with semirigid connections. The decomposes a frame into individual stories evaluates lateral stiffness each story via story-based approach explicit, closed-form solutions. Lateral sway instability occurs when any diminishes to zero, which this can be considered weakest in frame. re...

The authors propose a design philosophy for steel buildings in moderate seismic regions that draws on familiar concepts of ductility and capacity design, but also integrates the concepts of reserve capacity, elastic flexibility and strength to broaden the field of design possibilities. The paper discusses structural systems representing each of these concepts: Moderate-Ductility Concentrically-...

Quantifying and propagating uncertainties in structural response is critical to robust performance-based seismic assessments. This paper evaluates the influence of model parameter uncertainty on limit state assessment controlled rocking steel braced frames (CRSBFs). The dead load frame, fuse yield strength, initial post-tension (PT) force strength frame elements are random variables considered....

Near field earthquakes have imposed major damage to buildings in the past years. In some cases, the intensity of such damage is too considerable to be disregarded. The most effective way to improve seismic performance of buildings is applying a seismic control technique. The cylindrical friction damper is one of these methods, which has become popular for its desirable performance in the energy...