scholarly journals ANALYSIS OF COMPOSITE BUILDINGS UNDER FIRE CONDITIONS

2016 ◽  
Author(s):  
Shuyuan Lin ◽  
Zhaohui Huang ◽  
Mizi Fan
Keyword(s):  
Composite Structures ◽  
Three Dimensional ◽  
Membrane Action ◽  
Natural Fire ◽  
End Plate ◽  
Floor Slabs ◽  
Support Conditions ◽  
Plate Connections ◽  
The Impact ◽  
Fire Conditions

In this paper, the performances of a generic three dimensional 45m x 45m composite floor subjected to ISO834 Fire and Natural Fire are investigated. The influences of reinforcing steel mesh and vertical support conditions on the tensile membrane action of floor slabs are investigated in details. Two robust 2-node connection element models developed by the authors are used to model the behaviour of end-plate and partial end-plate connections of composite structures under fire conditions. The impact of connections on the 3D behaviour of composite floor is considered. Based on the results obtained, some design recommendations are proposed to enhance the fire safety design of composite buildings.

Behaviour of End-Plate Connections in 3D Frames Under Fire Conditions: Experimental Study

2018 ◽  
Vol 18 (3) ◽  
pp. 734-749 ◽  
Author(s):  
S. V. Khonsari ◽  
P. Vosough Grayli ◽  
A. Ghorbani ◽  
A. Roshani Moghaddam
Keyword(s):  
Experimental Study ◽  
End Plate ◽  
Plate Connections ◽  
Fire Conditions

Three-dimensional numerical and linearly distributed multi-parameter fitted analytical modeling of hybrid beam–column with partially welded flush end-plate connection

2018 ◽  
Vol 21 (12) ◽  
pp. 1777-1791
Author(s):  
Joma HM Omer ◽  
Ahmad BH Kueh ◽  
Poi-Ngian Shek
Keyword(s):  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Flexural Behavior ◽  
Major Influence ◽  
End Plate ◽  
Hybrid Beams ◽  
Plate Connections ◽  
Plate Connection ◽  
Three Dimensional Finite Element

The flexural behavior of partially welded flush end-plate connections incorporating built-up hybrid beams and columns is analytically and numerically investigated. An experimentally obeying three-dimensional finite element model is first constructed. To circumvent the laborious effort of three-dimensional simulation and experimental work, a new experimentally and numerically complying equation approach is introduced for the construction of a continuous moment–rotation ( M–θ) description. For the proposed equation, two essential terms are required: the rotational stiffness, Sj,ini, obtained by employing the component method and the maximum moment, Mmax, produced using the proposed linearly distributed multi-parameter fitting technique. To demonstrate the applicability of the proposed equation, a variation in the geometric configuration of connections within the practical range is considered. Excellent agreement is noted when comparing all M–θ relationships produced by the proposed equation to those by the finite element method and experiments. In addition, the stress distribution and main deformation modes are numerically obtained, where the ranking of stress criticality is offered for all structural parts. The depth, width, flange, and web thicknesses, as well as the yield stress of the beam, have a major influence on Mmax, as predicted by the proposed equation. Also, bolts have been identified as the most critically stressed component.

scholarly journals Analysis of the Behaviour of Semi Rigid Steel End Plate Connections

2018 ◽  
Vol 149 ◽  
pp. 02058
Author(s):  
A. Bahaz ◽  
S. Amara ◽  
J.P. Jaspart ◽  
J.F. Demonceau
Keyword(s):  
Finite Element ◽  
Plate Thickness ◽  
Three Dimensional ◽  
Element Model ◽  
Rotational Behaviour ◽  
Building Structures ◽  
Element Analysis ◽  
End Plate ◽  
Plate Connections ◽  
Three Dimensional Finite Element

The analysis of steel-framed building structures with full strength beam to column joints is quite standard nowadays. Buildings utilizing such framing systems are widely used in design practice. However, there is a growing recognition of significant benefits in designing joints as partial strength/semi-rigid. The design of joints within this partial strength/semi-rigid approach is becoming more and more popular. This requires the knowledge of the full nonlinear moment-rotation behaviour of the joint, which is also a design parameter. The rotational behaviour of steel semi rigid connections can be studied using the finite element method for the following three reasons: i) such models are inexpensive; ii) they allow the understanding of local effects, which are difficult to measure accurately physically, and iii) they can be used to generate extensive parametric studies. This paper presents a three-dimensional finite element model using ABAQUS software in order to identify the effect of different parameters on the behaviour of semi rigid steel beam to column end plate connections. Contact and sliding between different elements, bolt pretension and geometric and material non-linearity are included in this model. A parametric study is conducted using a model of two end-plate configurations: flush and extended end plates. The studied parameters were as follows: bolts type, end plate thickness and column web stiffener. Then, the model was calibrated and validated with experimental results taken from the literature and with the model proposed by Eurocode3. The procedure for determining the moment–rotation curve using finite element analysis is also given together with a brief explanation of how the design moment resistance and the initial rotational stiffness of the joint are obtained.

Web-Based Finite Element Mesh Generator for Testing Behavior of Steel Building Connections in Virtual Environment

2002 ◽  
Author(s):  
Ali Abolmaali ◽  
Hadi Razavi
Keyword(s):  
Finite Element ◽  
Virtual Environment ◽  
Three Dimensional ◽  
Test Beam ◽  
Element Mesh ◽  
Web Based ◽  
End Plate ◽  
Plate Connections ◽  
Set Up ◽  
The Web

This study presents development of a Web-based Finite Element Method (FEM) module, which creates model-virtual experimentations (MVE) for double web angle, top and seat angle, flush end-plate, and extended end-plate connections. The MVE mimics the real test set-up for monotonic and cyclic types of experiments in a Web-based virtual environment to be used for conducting virtual experiments to obtain load-deformation characteristics of the aforementioned connections being developed by the authors. The MVE’s library contains three dimensional isoparametric elements with and without internal nodes to eliminate shear errors. The MVE module and its output will contain graphical and visualization capability, and it will be accessible to researchers and students on the web. The Web-based client applications are developed such that it will access the MVE program running on a centralized server. The user is capable of changing parameters of visualization such as connection’s geometric variables or test beam and columns dimensions for real time recreation of MVE.

Numerical studies on the structural behaviour of composite end-plate connections

2010 ◽  
Vol 37 (6) ◽  
pp. 907-921 ◽  
Author(s):  
Aaron J. Wang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Three Dimensional ◽  
Element Model ◽  
Structural Behaviour ◽  
Analysis And Design ◽  
Shear Connectors ◽  
End Plate ◽  
Plate Connections ◽  
Plate Connection

A three-dimensional (3-D) finite element model is established to predict the structural behaviour of composite end-plate connections with full incorporation of material and geometrical nonlinearities. A two-dimensional (2-D) finite element model is also proposed as a tool for a comprehensive parametric study, analysis, and design. The accuracy of both the models is verified by comparing the numerical results with those from tests and a design model. Various important structural behaviours of composite end-plate connection are also studied through the numerical and analytical simulations. These models are regarded as effective tools for conducting performance-based design of composite connections and semi-continuous beams with reasonable consideration of nonlinear deformation characteristics of both tensile reinforcements and shear connectors.

scholarly journals Multi-Scale Modelling of Flexible End Plate Connections under Fire Conditions

2010 ◽  
Vol 4 (1) ◽  
pp. 88-104 ◽  
Author(s):  
Ying Hu ◽  
Buick Davison ◽  
Ian Burgess ◽  
Roger Plank
Keyword(s):  
Multi Scale ◽  
End Plate ◽  
Scale Modelling ◽  
Plate Connections ◽  
Fire Conditions

scholarly journals Modelling partial end-plate connections under fire conditions

2014 ◽  
Vol 99 ◽  
pp. 18-34 ◽  
Author(s):  
Shuyuan Lin ◽  
Zhaohui Huang ◽  
Mizi Fan
Keyword(s):  
End Plate ◽  
Plate Connections ◽  
Fire Conditions
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