This paper proposes a new mechanics-based model for the seismic design of beam-to-column panel zone joints in steel moment-resisting frames. The is based on realistic shear stress distributions retrieved from continuum finite element (CFE) analyses representative geometries. Comparisons with comprehensive experimental data set suggest that proposed predicts stiffness and strength noteworthy acc...

This paper proposes a force-based design method for force-limiting deformable connections that are used to transfer seismic-induced horizontal forces from the floor diaphragms in buildings vertical elements of lateral seismic force–resisting systems with base flexural mechanisms (e.g., reinforced concrete shear walls). The determines limiting at each building. which transition linear-elastic po...

iran is located in an area with high earthquake risk. there are over 20 active faults with length of 500 km and also densely populated parts of the country have been rendered vulnerable to strong earthquakes. however, existence of eight faults of the main faults of iran along with at least 18 faults with length of more than 100 km in kerman province have turned the place into one of the riskies...

Lightweight cold-formed steel (CFS) framing is an effective building solution for low and mid-rise structures. However, systems level response and component contributions as well as their interactions such as those from lateral-load resisting systems, floor diaphragms, studs to track connections, etc., are not fully understood. Existing building codes for the CFS frame buildings are based solel...

The steel frames, which are composed of expanded-section columns and beams, have bigger moment-resisting capacity better structural stability. So that they broadly applied in multi-story structures low to medium seismic zones. However, the section is likely local buckling due its expanded sections, decreases structure ductility. To support application, how determine horizontal design load studi...

A modified version of the BRANZ procedure for lateral capacity rating of bracing walls is used to determine the sustainable lateral mass of a 910-mm wide ‘2x4’ wood shear wall. The key modifications involve: (1) the use of a multicriteria system identification method to determine a structural model that simultaneously fits test data from both cyclic testing and pseudo-dynamic testing; and (2) p...

Moment-resisting frames have extensive usage in earthquake-prone areas and high ability in energy dissipation.After the earthquake in Northridge 1994,Kobe 1995 fixed connections of steel structures have shown poor performance and generally they were caught brittle fracture of beam flange weld to the column.In order to remedy to avoid similar situations in future earthquakes,researchers introduc...

coupled -shear walls are one of lateral load resisting systems in high and medium rise reinforced concrete buildings. the lateral structural response is exactly dependents on the shear walls behavior; therefore these elements must response well whenundergodifferent load conditions. the structures located in near-source region behave differently compared to those in near-source sites when subjec...

large panel precast structures are analyzed based on the connection rigidity. however, the connections undergo nonlinear and inelastic response, when subjected to seismic loads. thus, to study the actual behavior of structure, the connection nonlinearity should be implemented in the joints. in this paper, three conventional connection types are modeled based on the envelope of their cyclic resp...