scholarly journals Effect of transient strain on strength of concrete and CFT columns in fire – Part 1: Elevated-temperature analysis on a Shanley-like column model

2012 ◽  
Vol 44 ◽  
pp. 379-388 ◽  
Author(s):  
Shan-Shan Huang ◽  
Ian W. Burgess
Keyword(s):  
Elevated Temperature ◽  
Temperature Analysis ◽  
Column Model ◽  
Transient Strain ◽  
In Fire

Dynamic and Temperature Analysis Adopted in Fire Analysis and Design

2013 ◽  
pp. 191-238
Author(s):  
M. Y. H. Bangash ◽  
Y. F. Al-Obaid ◽  
F. N. Bangash
Keyword(s):  
Temperature Analysis ◽  
Analysis And Design ◽  
In Fire

Temperature analysis of steel structures protected by intumescent paint with steel claddings in fire

2020 ◽  
Vol 44 (7) ◽  
pp. 897-908
Author(s):  
Zhongcheng Ma ◽  
Jarmo Havula ◽  
Frantisek Wald ◽  
Kamila Cabova
Keyword(s):  
Steel Structures ◽  
Temperature Analysis ◽  
In Fire

Numerical Analysis on Failure Modes of Steel Frame under Fire Combined Blast Loads

2013 ◽  
Vol 831 ◽  
pp. 476-480
Author(s):  
Shi Yan ◽  
Lu Yang ◽  
Xue Lei Jiang
Keyword(s):  
Finite Element Method ◽  
Temperature Field ◽  
Room Temperature ◽  
Failure Modes ◽  
Steel Frame ◽  
Frame Structure ◽  
Blast Load ◽  
Second Step ◽  
Temperature Analysis ◽  
In Fire

An H-shaped steel frame in fire combined blast loading was numerically developed in this paper using finite element method by ANSYS thermal analysis. At the first step, a temperature field has been numerically analyzed. At the second step, each element of the steel frame was assigned different modulus of elasticity and yield stress based on the temperature analysis results. A dynamic simulation of the steel frame subjected to a blast load was analyzed under such a temperature field. The failure modes of the frame structure has been discussed. Finally, a same shape frame at the room temperature under the same blast load was simulated to compare with that at the elevated temperature.

An Engineering Mechanics Based Approach to Predict Safety of RC Columns under High Temperatures

2013 ◽  
Vol 351-352 ◽  
pp. 42-45
Author(s):  
Yao Yao
Keyword(s):  
Reinforced Concrete ◽  
Elevated Temperature ◽  
Fire Resistance ◽  
Design Code ◽  
Rc Columns ◽  
Scientific Approach ◽  
Engineering Mechanics ◽  
Structural Engineers ◽  
In Fire

Up till now, the design code for the determination of fire resistance of reinforced concrete (RC) columns is essentially based on tabulated data. Clearly, a more scientific approach based on an understanding of the fundamental behavior of columns in fire is timely andwill be useful to structural engineers. This paper develops a straightforward and rational method to predict the fire resistance of RC columns，which is based on the traditional Rankine approach. The effect of shear bond, if included in the Rankine approach, will yield moreaccurate predictions. Material deterioration at elevated temperature with regard to the strength and stability of columns is also quantified.

Research Progress of Shear Behavior of Reinforced Concrete Column with Rectangular Section in Fire

2014 ◽  
Vol 1065-1069 ◽  
pp. 2323-2327
Author(s):  
Yue Yao ◽  
Yong Jun Liu ◽  
Xue Wang
Keyword(s):  
Reinforced Concrete ◽  
High Temperature ◽  
Shear Capacity ◽  
Research Progress ◽  
Concrete Column ◽  
Temperature Analysis ◽  
Reinforced Concrete Column ◽  
Rectangular Section ◽  
Research Results ◽  
In Fire

Nowadays there are lots of cases in which buildings collapse as a result of fire. As the main infrastructure of a building, column’s losing its shear capacity in the fire is one of the factors that causes the buildings collapse. This essay fouses on the summary of the research results of column shear capacity at high temperature, analysis of the reasons why column shear and wreck in the fire, review of experiments , simulators, and the outlook of its development in the future.

Temperature Field Analysis of Space Grid Structures

2012 ◽  
Vol 204-208 ◽  
pp. 877-880
Author(s):  
Guang Yong Wang ◽  
Na Wang
Keyword(s):  
Heat Transfer ◽  
Temperature Field ◽  
Element Model ◽  
Field Analysis ◽  
Temperature Analysis ◽  
Grid Structure ◽  
Space Grid ◽  
Steel Members ◽  
Proposed Model ◽  
In Fire

A heat transfer finite element model for the temperature analysis of space grid structures considering the conduction and protection thickness of the steel members in fire is proposed, and the temperature field of a typical grid structure is analyzed by using the proposed model. The results show that the proposed model is reasonable.

Elevated Temperature Analysis in BPV Code Section VIII Division 2 Part 5

2016 ◽  
Author(s):  
J. Adin Mann ◽  
Chithranjan Nadarajah ◽  
Benjamin F. Hantz ◽  
Sujay Krishnamurthy
Keyword(s):  
Elevated Temperature ◽  
Working Group ◽  
Failure Modes ◽  
Temperature Analysis ◽  
Linear Elastic ◽  
Inelastic Analysis ◽  
Section Viii ◽  
Potential Failure ◽  
Division 2 ◽  
Multiple Conditions

The Working Group on Design by Analysis in collaboration with the Working Group on Elevated Temperature Construction has developed a proposal for elevated temperature analysis in the ASME Boiler and Pressure Vessel Code Section VIII Division 2 Part 5, Design by Analysis. Elevated temperature is defined as the temperature where the allowable stress is time-dependent, that is, controlled by creep. The proposal is divided into the potential failure modes: rupture, ratcheting, fatigue, buckling, and service conditions. Linear elastic and inelastic analysis options rely on published approaches. The focus of the presentation will be on the Linear Elastic analysis options which include a fatigue screening, a ratcheting assessment, and an assessment for burst. Multiple conditions are allowed in the analysis. The proposed rules will be presented.

Review of the Punching Shear Behavior of Concrete Flat Slabs in Ambient and Elevated Temperature

2013 ◽  
Vol 4 (4) ◽  
pp. 259-280 ◽  
Author(s):  
Mehrafarid Ghoreishi ◽  
Ashutosh Bagchi ◽  
Mohamed Sultan
Keyword(s):  
Elevated Temperature ◽  
Shear Failure ◽  
Shear Behavior ◽  
Shear Capacity ◽  
Punching Shear ◽  
Ambient Conditions ◽  
Flat Slab ◽  
Flat Slabs ◽  
Analytical Studies ◽  
In Fire

There are a number of benefits associated with two-way concrete flat slab construction for office buildings, parking garages and apartments - for example, reduced formwork, prompt erection, flexibility of partitions, and minimal increase in story heights. However, concrete flat slabs could be quite vulnerable to punching shear failure in the event of a fire. The objective of the present article is to provide a state of the art review of the existing research and the issues associated with concrete flat slabs in fire and elevated temperature. There are a number of experimental and analytical studies on the punching shear behavior of concrete flat slabs in ambient conditions, available in the literature. Based on these studies, it is found that punching shear capacity in ambient condition is affected by many factors, which may not remain constant during a fire exposure. Only a limited number of studies on concrete flat slabs for punching shear failure in fire are available. This paper reviews the available experimental and analytical studies, standards and codes to address the research gap in estimating of punching shear strength of concrete flat slab-column connections without shear reinforcement.

scholarly journals Behavior of cellular beams protected with intumescent coatings

Fire Research ◽  
2016 ◽  
Author(s):  
Brahim Lamri ◽  
Luís Mesquita ◽  
Kada Abdelhak ◽  
Paulo Piloto
Keyword(s):  
Fire Resistance ◽  
Fire Protection ◽  
Experimental Results ◽  
Engineering Practice ◽  
Temperature Analysis ◽  
Web Openings ◽  
Intumescent Coatings ◽  
Circular Holes ◽  
In Fire ◽  
The Web

A new engineering practice in modern buildings is to use beams with web openings to allow the passage of services within the depth of the beam instead of underneath the beam. As the web post failure may occur before the section reaches the limiting temperature, usually an increase in the fire protection may be required for members with web openings in comparison to its equivalent solid section. The aim of this work is to present an experimental study of unloaded solid and cellular beams with circular holes in fire conditions with and without intumescent fire protection. These preliminary tests results are the basis for generating an elemental multi-temperature analysis needed to assess cellular beams with intumescent protection and give experimental results for calibration of further numerical simulations. The experimental results show that, considering the same nominal fire protection thickness, one can obtain a higher fire resistance time for solid beams when compared with cellular beams. The tests performed, with different hole diameters and web-post widths, points that to achieve the same fire resistance time, a cellular beam will need a higher fire protection compared to an equivalent solid beam. Also, a special care is needed when the intumescent coating is applied around the hole to avoid the intumescent contraction, applying for example an over coating.

Major Issues of Theory and Practice of Fire Resistance of Reinforced Concrete Structures and Buildings

2020 ◽  
Vol 1006 ◽  
pp. 136-142
Author(s):  
Stanislav Fomin ◽  
Yurii Bondarenko ◽  
Serhii Butenko ◽  
Serhii Koliesnikov
Keyword(s):  
Fire Resistance ◽  
Professional Training ◽  
Practical Problem ◽  
Theory And Practice ◽  
Structural System ◽  
Temperature Analysis ◽  
Calculation Methods ◽  
Alternative Approach ◽  
Modelling Techniques ◽  
In Fire

The basic problems of the theory such as principle of assigning classes of fire resistance, reliability issues, alternative approach to calculation methods, mathematical models of concrete and reinforcement deformation diagram, numerical modelling techniques, temperature analysis and calculation of mechanical work of structural system in fire conditions have been considered. It is revealed that the real practical problem is the lack of professional training of civil engineers in Ukraine and abroad.

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