Study of the plastic-hinge analysis of 3D steel frames applying nonlinear static analysis

This paper provides a distinct study on the performance of different residential buildings with different height and length spans under the influence of applied loads according to the Turkish standard TS498. The research paper presents the nonlinear performance of the buildings and provides a clear picture of the plastic and its stages throughout the construction. The study explains the effect of the various stages of plastic and how it affects the rigidity of the building. The results portray the building's stiffness values and how they change. The results show that stiffness increases with length-increase and decreases by decreasing the height of buildings. All stiffness values were calculated according to the first plastic hinge formation. Software used is ETABS 2018 and all calculations and parameters used according to FEMA356-2000, ASCE 7-16, ACI-318, EURO code 8, and Turkish standard.

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PERFORMANCE BASED EVALUATION OF RCC BUILDING WITH DUAL SYSTEM

June-2020 - International Journal of Engineering Sciences & Research Technology ◽

10.29121/ijesrt.v9.i6.2020.11 ◽

2020 ◽

Vol 9 (6) ◽

pp. 61-71

Keyword(s):

Static Analysis ◽

Plastic Hinge ◽

Performance Based Design ◽

Nonlinear Static Analysis ◽

Building Performance ◽

Or Methodology ◽

Nonlinear Static ◽

Performance Based Evaluation ◽

Hinge Model ◽

Story Building

Building performance is an indicator of how well a structure supports the defined needs of its users. Acceptable performance indicates acceptable (or tolerable) levels of damage or condition that allow uninterrupted facility operation. Consequently, performance-based design is the process or methodology used by design professionals to create buildings that protect functionality and the continued availability of services. In this Paper a 10 story building is designed using E-tabs software and a nonlinear static analysis is carried out using point plastic hinge model. The designed building was modelled and the hinges or possible failure locations were assigned. The stiffness of the building was increased due to the slab present and this was incorporated in the model using diaphragm. And finally the building is Evaluated as per its performance as per FEMA guidelines.

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Improvement of progressive collapse resistance potential of semi-rigid jointed steel frames through bracings

International Journal of Protective Structures ◽

10.1177/2041419616668085 ◽

2016 ◽

Vol 7 (4) ◽

pp. 518-546

Author(s):

Milan Bandyopadhyay ◽

Atul Krishna Banik

Keyword(s):

Static Analysis ◽

Progressive Collapse ◽

Steel Frames ◽

Nonlinear Dynamic Analysis ◽

Nonlinear Static Analysis ◽

Braced Frame ◽

Collapse Resistance ◽

Column Removal ◽

Rigid Frames ◽

Nonlinear Static

Progressive collapse studies of both unbraced and braced semi-rigid jointed steel frames have been carried out to evaluate the contribution of bracings in improving progressive collapse resistance potential. Numerical models of 10-story frames with different types of semi-rigid connections have been developed using SAP2000. Progressive collapse potential of semi-rigid frames is first investigated without bracings. Bracings are then included in a systematic manner, and response of the braced frame is compared with that of unbraced frame to evaluate the contribution of bracings. Two different arrangements of bracings, that is, bay-wise and floor-wise arrangements, are considered to find out a preferred arrangement of bracings. Parametric studies include eight column removal conditions at center and corner locations of different floors. Development of catenary action has also been considered as it gives additional resistance, especially to braced frame. Apart from nonlinear static analysis, effects of bracings are evaluated also through nonlinear dynamic analysis and the responses of the frames in nonlinear dynamic analysis are compared with those of nonlinear static analysis. From the study, it is found that provision of bracings significantly improves the progressive collapse resistance potential of the semi-rigid frames under different column removal conditions. Floor-wise arrangement of bracings is much effective as compared to bay-wise arrangement.

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