Experimental Investigation of the Structural Response of a Steel-Framed Building Subjected to Traveling Fire

2022 ◽  
Vol 148 (2) ◽  
Author(s):  
Shipeng Ruan ◽  
Jincheng Zhao ◽  
Zhensen Song ◽  
Liping Duan
Keyword(s):  
Experimental Investigation ◽  
Structural Response

Experimental Investigation on Fire Resistance of CES Columns Subjected to 3-Side Heating

2011 ◽  
Vol 250-253 ◽  
pp. 1657-1666
Author(s):  
Xiao Yong Mao ◽  
Wei Hua Guo ◽  
Li Li Li
Keyword(s):  
Experimental Study ◽  
Experimental Investigation ◽  
Fire Resistance ◽  
Structural Response ◽  
Load Ratio ◽  
Test Results ◽  
Key Factors ◽  
Fire Condition ◽  
Load Intensity ◽  
Steel Section

Results of experimental study on fire resistance of four concrete encased steel (CES) columns are presented. The four columns have the same steel section and reinforcements but different load intensity and load eccentricity, which were the key factors for fire resistance of CES columns under fire condition. The tested results are utilized to study the effect of various parameters on thermal and structural response of CES columns. Spalling of CES columns under fire condition are also investigated. Test results show that CES columns under 3-side heating have higher fire resistance than that under 4-side heating. Also, load ratio and load eccentricity have noticeable influence on the fire resistance of CES columns. In addition, spalling of concrete decreases the fire resistance of CES columns.

scholarly journals Experimental Investigation of the Structural Scattering Due to Impedance Discontinuities on a Cylindrical Shell

2005 ◽  
Author(s):  
Ryan J. Glotzbecker ◽  
Stephen A. Hambric ◽  
Martin L. Pollack
Keyword(s):  
Experimental Investigation ◽  
Weld Seam ◽  
Structural Characteristics ◽  
Structural Response ◽  
Test Results ◽  
Response Matrix ◽  
Cylindrical Structures ◽  
Integer Multiple ◽  
Input Force ◽  
Analytical Work

Experimental, numerical, and analytical work has shown that the response of a shell to a distributed force wave possesses unique characteristics which are dependent on the nature of structure attached to the shell. Specific characteristics which influence the response are the distribution of the discontinuities around the circumference (periodic/a-periodic), the impedance of the discontinuities relative to that of the shell, and the type of impedance (mass or stiffness). An experimental investigation into the harmonic scattering behavior of a shell due to mass discontinuities is presented in this paper. Knowledge of the key structural characteristics which influence scattering and their behavior will allow for a diagnostic tool when assessing the structural response of more complex cylindrical structures. Changes in structural response on a mode number basis as a result of the change in mass discontinuities are explored. Spatial Fourier analysis of both the input force and output response is used to provide a measure of the structural response matrix on a mode-by-mode basis. A distributed input force is simulated by applying forces around the circumference of the shell, then subsequently weighting the phase and amplitude of the measured transfer function according to the input force wave desired. This technique was applied to a shell in its unmodified condition, with periodic masses attached, and with aperiodic masses attached. Test results indicate that some harmonic scattering is present in the clean structure (no attached mass), likely due to non-ideal boundary conditions and the weld seam of the pipe used. Test results for the structure with periodically distributed masses indicate that response harmonics equal to the sum of input the harmonic number and an integer multiple of the number of discontinuities were excited. The structure with a-periodically distributed masses appears to scatter energy from the force harmonic into all response harmonics.

scholarly journals Analysis of the Behavior of FRCM Confined Clay Brick Masonry Columns

Fibers ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 11 ◽  
Author(s):  
Luciano Ombres ◽  
Salvatore Verre
Keyword(s):  
Experimental Investigation ◽  
Compressive Load ◽  
Structural Response ◽  
Ultimate Strain ◽  
Brick Masonry ◽  
Small Scale ◽  
Clay Brick ◽  
Eccentric Load ◽  
Axial Capacity ◽  
Confinement System

The behavior of FRCM (Fabric Reinforced Cementitious Mortar) confined clay brick masonry columns is analyzed in this paper. The results of an experimental investigation conducted on small-scale columns made by clay brick masonry confined with steel-FRCM (or Steel Reinforced Grout, SRG), PBO (poly-paraphenylene-benzo-bisoxazole) FRCM and basalt-FRCM, tested under monotonic compressive load, are described and discussed. Tests were conducted on thirteen prismatic columns; eleven columns (two unconfined and nine confined) were tested under concentric load while an eccentric load was applied on two confined columns. For each confinement system, the parameters investigated were the ‘confinement ratio’, the ‘load eccentricity’ and the ‘overlap configuration of the fiber fabrics’. FRCM confinement improved the structural response of masonry columns in terms of ultimate strength, ultimate strain and ductility. Some models from the literature were also examined to evaluate their applicability in predicting the axial capacity of confined columns.

scholarly journals Structural response of cold-formed lipped Z purlins – Part 1: Experimental investigation

2021 ◽  
Vol 161 ◽  
pp. 107452
Author(s):  
Meshal Almatrafi ◽  
Marios Theofanous ◽  
Samir Dirar ◽  
Michaela Gkantou
Keyword(s):  
Experimental Investigation ◽  
Structural Response

scholarly journals Experimental study on counterintuitive behavior of thin aluminium plates under free airblast loading

2018 ◽  
Vol 183 ◽  
pp. 02059
Author(s):  
Zixi Xu ◽  
Yan Liu ◽  
Fenglei Huang
Keyword(s):  
Experimental Study ◽  
Experimental Investigation ◽  
Dimensionless Parameter ◽  
Permanent Deformation ◽  
Structural Response ◽  
Impulsive Loading ◽  
Special Focus ◽  
Air Blast ◽  
Free Air ◽  
Air Blast Loading

An experimental investigation of the counterintuitive behaviour in thin aluminium plates under fullfield test is presented in the paper. Special focus is placed on structural response and permanent deflection of the panels after the complex response. Thus, a series of tests with the plates varied in two kinds of thickness were conducted, where impulsive loading was generated by detonating the explosives at various standoff distances. As loaded impulsively, the vibration response was observed and the final configuration of each plate was measured and recreated. It is shown that all plates subjected to free air blast loading in such conditions exhibited plastic permanent deformation combined with distinct counterintuitive behaviour, as the plates deformed to the opposite direction of the incident wave. In addition, the characteristics of the permanent deflection can be divided into 2 typical deformation shapes, and the occurrences of which were correlated to the dimensionless parameter proposed in previous studies, confirmed to be an approximate indicator to describe the influence of loading conditions herein.

Experimental investigation on the structural response of RC slabs subjected to combined fire and blast

Structures ◽  
2021 ◽  
Vol 31 ◽  
pp. 1017-1030
Author(s):  
Matteo Colombo ◽  
Paolo Martinelli ◽  
Assis Arano ◽  
Jan Arve Øverli ◽  
Max A.N. Hendriks ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Structural Response ◽  
Rc Slabs
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