Numerical investigations of repairable dissipative bolted fuses for earthquake resistant composite steel frames

The principles of designing earthquake-resistant steel frames of industrial buildings are considered. Particular attention is paid to the causes of damage to steel frames due to seismic loads impact, as well as the requirements that must be met when designing steel frames in seismically active areas. The most suitable materials that can be used to strengthen the steel frame, because of its correct operation relative to the resulting seismic loads have been studied. The analysis of loads calculated according to the normative documents of Russia and other countries of the world, and their comparison with each other are presented. An overview of possible experimental methods for determining the strength of the frame under seismic loads is given, as well as a critical assessment of the regulatory documents used, namely the formulas and coefficients used, and alternative solutions are proposed. The influence of soil on the strength parameters of the steel frame under seismic load, as well as the influence of own vibrations and forms of the structure on the pliability of the bases, were studied. Promising design solutions for steel frames in the event of earthquakes are indicated. The experience of designing earthquake-resistant structures abroad was studied and the materials of past accidents in Russia and other countries of the world were analyzed.

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DESIGN OF CIRCULAR COMPOSITE BEAMS WITH A DIFFERENT CONCRETE CORE CONSIDERING THE EFFECT OF CONCRETE IN TENSION

Journal of Civil Engineering and Management ◽

10.3846/13923730.2015.1111933 ◽

2015 ◽

Vol 22 (1) ◽

pp. 118-123 ◽

Cited By ~ 1

Author(s):

Audronis Kazimieras KVEDARAS ◽

Gintas ŠAUČIUVĖNAS ◽

Arūnas KOMKA ◽

Algirdas JUOZAPAITIS

Keyword(s):

Test Data ◽

Numerical Experiments ◽

Composite Beams ◽

Steel Shell ◽

Test Results ◽

Concrete Core ◽

Beam Columns ◽

Numerical Investigations ◽

Bending Resistance ◽

Composite Steel

Currently, the bending resistance of composite steel and concrete circular beams and beam-columns may be analysed assuming the interaction between the steel shell and concrete core but ignoring the behaviour of the part of the concrete core in tension. Some natural and numerical experiments show that an influence of this part of the concrete core on the total value of bending resistance of a composite member may be rather important. Therefore, this paper pre- sents the method developed for the design of hollow and solid concrete-filled steel tubular beams based on the test data. It takes into account an effect of the part of the concrete core in tension and gives a better agreement with test results than EC4 (EN 1994-1-1 2004). Also, the paper presents the results of carried out analytical, experimental and numerical investigations of the hollow centrifuged and solid concrete-filled steel tubular beams.

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Numerical investigations of repairable dissipative bolted fuses for earthquake resistant composite steel frames

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DESIGN OF CIRCULAR COMPOSITE BEAMS WITH A DIFFERENT CONCRETE CORE CONSIDERING THE EFFECT OF CONCRETE IN TENSION

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