Behavior and Limit States of Long-Span Composite Floor Beams with Simple Shear Connections Subject to Compartment Fires: Experimental Evaluation

Ten full-scale specimens consisting of wide-flange beams shear connected by means of tee stubs to hollow structural section (HSS) column faces were tested. Shear–displacement and shear–rotation behaviour were documented and five possible failure modes were identified for this type of connection. In all cases, excessive displacements resulted from yielding of the tee stem, while different ultimate failure modes were observed. Except for bending of the HSS wall, the identified failure modes could be related to well-known limit states. Quantitative evaluations were provided for the remaining failure modes. Key words: connection, steel, HSS, W shape, shear, column, beam, tee stub, experimental.

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Experimental Evaluation of Work-hardening Behavior Using Simple Shear Test and Formulation of Strain Dependence of Work-hardening Exponent for Steel Sheets

Tetsu-to-Hagane ◽

10.2355/tetsutohagane.tetsu-2017-037 ◽

2017 ◽

Vol 103 (10) ◽

pp. 589-596 ◽

Cited By ~ 2

Author(s):

Satoshi Shirakami ◽

Tohru Yoshida ◽

Toshihiko Kuwabara

Keyword(s):

Simple Shear ◽

Work Hardening ◽

Experimental Evaluation ◽

Shear Test ◽

Strain Dependence ◽

Work Hardening Behavior ◽

Simple Shear Test ◽

Steel Sheets ◽

Hardening Behavior ◽

Work Hardening Exponent

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Uncertainties Concerning the Free Vibration of Inhomogeneous Orthotropic Reinforced Concrete Plates

Slovak Journal of Civil Engineering ◽

10.2478/sjce-2014-0014 ◽

2014 ◽

Vol 22 (3) ◽

pp. 21-30

Author(s):

Vahid Lal Shahsavar ◽

Samira Tofighi

Keyword(s):

Reinforced Concrete ◽

Free Vibration ◽

Structural Engineering ◽

Limit States ◽

Construction Operations ◽

Long Span ◽

Elastic Bodies ◽

Industrial Buildings ◽

Floor Vibration ◽

Concrete Plates

Abstract Analyzing nearly collapsed and broken structures gives good insights into possible architectural and engineering design mistakes and faults in the detailing and mismanagement of a construction by building contractors. Harmful vibration effects of construction operations occur frequently. The background reviews have demonstrated that the problem of the vibration serviceability of long-span concrete floors in buildings is complex and interdisciplinary in nature. In public buildings, floor vibration control is required in order to meet Serviceability Limit States that ensure the comfort of the users of a building. In industrial buildings, machines are often placed on floors. Machines generate vibrations of various frequencies, which are transferred to supporting constructions. Precision machines require a stable floor with defined and known dynamic characteristics. In recent years there has been increasing interest in the motion of elastic bodies whose material properties (density, elastic moduli, etc.) are not constant, but vary with their position, perhaps in a random manner. Concrete is a non-homogeneous and anisotropic material. Modeling the mechanical behavior of reinforced concrete (RC) is still one of the most difficult challenges in the field of structural engineering. One of several methods for determining the dynamic modulus of the elasticity of engineering materials is the vibration frequency procedure. In this method, the required variables except for the modulus of elasticity are accurately and certainly determined. In this research, the uncertainly analysis of the free vibration of inhomogeneous orthotropic reinforced concrete plates has been investigated. Due to the numerous outputs obtained, the software package has been written in Matlab, and an analysis of the data and drawing related charts has been done.

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