Comparison of Different H-EBF Designed Using Iranian 2800 Standard, IBC 2009 and Performance Based Plastic Design

Shayanfar, Mohsen Ali; Rezaeian, Alireza; Zanganeh, Ali

doi:10.22034/jss.2011.238604

Comparison of Different H-EBF Designed Using Iranian 2800 Standard, IBC 2009 and Performance Based Plastic Design

Document Type : Original Article

Authors

Mohsen Ali Shayanfar

Alireza Rezaeian

Ali Zanganeh

10.22034/jss.2011.238604

Abstract

Many countries have their own specific code for seismic resistant design of structures. In all these codes, it is important to know site characteristics, site seismicity, building importance, type of structural resistant system and situation of building . corresponding, coefficients in different codes are varied. Defining the base shear and its distribution at floor levels are based on elastic analysis, which cannot simulate the actual behavior of structure under severe ground motions. This is mostly contributed to the formation of plastic hinges along the height of the structure which are not accounted for in elastic analyses. Therefore, new method referred to as "performance based plastic design" (PBPD) has been used to simulate the actual behavior of structures under severe ground motions. In this paper, the seismic performance of eccentrically braced steel frames with symmetric horizontal links (H-EBF) that are designed based on Iranian 2800 standard code (3rd edition), IBC 2009 and PBPD are compared. In PPBD method, the plastic hinge, story displacement and plastic rotation of links are uniformly distributed along the height and nonlinear behavior of the structure is accounted for.

Keywords

Performance Based Plastic Design

Eccentrically Braced Frame

Seismic Performance

Symmetric Horizontal Link

Plastic Hinge