The fire effect on non-load bearing LSF walls – Numerical and simple calculation methods

2020 ◽  
Vol 5 (1) ◽  
pp. 10-16
Author(s):  
Larissa L. L. Ferreira ◽  
Paulo A. G. Piloto ◽  
Giovanni Bratti
Keyword(s):  
Simple Calculation ◽  
Calculation Methods ◽  
Load Bearing ◽  
Fire Effect

Finding the optimum layout for cable-stayed bridge in conceptual design

2021 ◽  
Author(s):  
Sami Soppela ◽  
Esko Järvenpää
Keyword(s):  
Longitudinal Direction ◽  
Simple Calculation ◽  
Integral Calculus ◽  
Bearing Material ◽  
Load Bearing ◽  
Permanent Load ◽  
Early Design Stages ◽  
Cable Forces ◽  
The Cost ◽  
Cable Stayed Bridges

<p>In the cable-stayed bridges the primary cost components of the load-bearing material, in the longitudinal direction of the bridge, are the cables. The longer the bridge, the higher the share of the costs of the load-bearing material. The quantity of the cables and the cost optimized cable and tower topology can be reliably solved, already in very early design stages, using a simple calculation method proposed in this article. The cables are considered as a curtain structure and the cable forces are calculated for the permanent load balance. The solutions are performed mathematically by using integral calculus based on a force length method and a unit bridge concept. The results provide a good idea of the optimum pylon height for both one-pylon and two-pylon bridges. The optimum pylon height depends on the span ratio and the chosen cable system.</p>

FIRE PERFORMANCE OF NON-LOADBEARING LIGHT STEEL FRAMING WALLS – NUMERICAL AND SIMPLE CALCULATION METHODS

2017 ◽  
Vol 3 (2) ◽  
pp. 13-23
Author(s):  
Paulo A. G. Piloto ◽  
◽  
Mohamed S. Khetata ◽  
Ana B. R. Gavilán ◽  
◽  
...  
Keyword(s):  
Simple Calculation ◽  
Fire Performance ◽  
Calculation Methods ◽  
Steel Framing

scholarly journals Fire resistance assessment of RC columns with advanced calculation methods

2021 ◽  
pp. 82-96
Author(s):  
Yevhen Dmytrenko ◽  
Taras Donets ◽  
Kateryna Odnolitok ◽  
Oleg Fesenko
Keyword(s):  
Heat Transfer ◽  
Reinforced Concrete ◽  
Convective Heat Transfer ◽  
Cross Section ◽  
Convective Heat ◽  
Fire Resistance ◽  
Concrete Columns ◽  
Fire Exposure ◽  
Calculation Methods ◽  
Load Bearing

This paper contains the results of fire resistance calculation of reinforced concrete columns with advanced calculation methods. For columns that are tested unloaded, determine the cross-sectional temperature distribution and values of temperature in reinforcement. The fire resistance of columns that have been tested without load is determined according to temperature measurements, with calculation methods according to the requirements of DBN B.1.1-7 andDBN B.1.2-7. According to the tabulated method, the fire resistance of reinforced concrete columns is determined by geometric parameters such as cross-section width, axis distance of the reinforcement, amount of reinforcement, length or height of the element, load level during the fire exposure, heating conditions during the fire exposure (number of fire exposed sides). Accidental combination of actions during the fire situation consists of characteristic values of permanent and variable long-term actions taking into account the safety factor  for the consequence class of the object (CC2) and the type of design situation (accidental). Thermal analysis of the column was performed under conditions of the standard fire exposure. In such conditions it was assumed that the column is exposed to fire with four sides for 120 minutes that corresponds to the required fire resistance class R120. The thermal state of the column was determined using transient thermal models that take into account radiation-convective heat transfer in the ambient from the heat source to the structural surface, convective heat transfer in the structure, radiation-convective heat exchange from the structure to the ambient environment. The residual load-bearing capacity of the reinforced concrete column after the fire exposure was calculated with the reduced cross-section determined using zone method in accordance with the requirements of DSTU-N B B.2.6-197 and DSTU-N B EN 1992-1-2. The fire resistance period of columns for the load-bearing criterion was determined on the basis of the results of of thermal and static analysis.

scholarly journals Analysis of the load bearing capacity of the connection with the use of self-drilling dowels in various models of elastic failure

2020 ◽  
Vol 17 (4) ◽  
pp. 89-99
Author(s):  
A. G. Chernykh ◽  
◽  
Quoc Phong Tran ◽  
Keyword(s):  
Bearing Capacity ◽  
High Strength ◽  
Steel Plates ◽  
Use Of Self ◽  
Calculation Methods ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Factors Affecting ◽  
Wooden Structures ◽  
The Relationship

Currently, wooden structures characterized with high strength, low deformability and good aesthetics are being increasingly used in some areas of construction. Connections with multiple steel plates are very effective for wooden frames and trusses. In order to provide optimal connections, it is necessary to establish the relationship between the connection parameters and the load-bearing capacity of the structure. However, the technical regulations do not provide calculation methods specifically for this type of connection. There have been carried out a research and development of methods for calculating connections, an analysis of the self-drilling dowels` performance, and the factors affecting the load bearing capacity according to Eurocode 5 have been specified. The results obtained have been compared with other various research methods` results, there are offered authors` recommendations on the application of the standard in Russia.

Using Simulated Data to Support the Calibration Process of ED-XRF Analysis

2015 ◽  
Vol 1120-1121 ◽  
pp. 1435-1440
Author(s):  
Dániel Koncz-Horváth ◽  
Zoltán Gácsi
Keyword(s):  
Simulated Data ◽  
Simple Calculation ◽  
Spectral Lines ◽  
Ratio Method ◽  
Calculation Methods ◽  
Standard Samples ◽  
Peak Intensity Ratio ◽  
Calibration Process ◽  
Cu Alloys ◽  
Peak Intensity

In the general practice of ED-XRF measurements, the values of elemental concentrations are derived from complicated calculation methods. Hereby a simple mathematical formula is suggested, which provides an easy way to prepare standard samples. On the other hand, the simulation of spectral lines may also be a helpful tool for the calibration process. In this study, measured and simulated data were used for the quantitative analysis of ternary Au-Ag-Cu alloys. To determine the calibration points, the peak intensity ratio method was applied and the calibration curves were fitted. This work presents the results of a twofold investigation aimed at: a) finding a suitable computational tool to optimise the parameters of the underlying equations and b) testing the reliability of the simulated data to determine the concentrations of multi-element standard samples. Based on comparisons of calculated concentrations it can be stated that a simple calculation method with simulated data provides an easy tool to define calibration standards. It is also demonstrated that the parameters of the linear plots can be optimised to yield improved results.

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