16.23: A comparative analysis of longitudinal stiffener cross-section for slender I-girders subjected to patch loading

ce/papers ◽  
2017 ◽  
Vol 1 (2-3) ◽  
pp. 4223-4229 ◽  
Author(s):  
Nelson Loaiza ◽  
Carlos Graciano ◽  
Rolando Chacón ◽  
Euro Casanova
Keyword(s):  
Comparative Analysis ◽  
Cross Section ◽  
Longitudinal Stiffener ◽  
Patch Loading

scholarly journals COMPARATIVE ANALYSIS OF CONSTRUCTION TECHNOLOGIES FOR THE DEVELOPMENT OF UNDERGROUND PARKING SPACE: THE EXAMPLE OF MOSCOW

2021 ◽  
Vol 78 (1) ◽  
pp. 102-110
Author(s):  
Anishchenko ◽  
V.L. Belyaev
Keyword(s):  
Comparative Analysis ◽  
Cross Section ◽  
Rectangular Cross Section ◽  
Parking Space ◽  
Advantages And Disadvantages ◽  
The World ◽  
Trenchless Technologies

The article reveals the advantages and disadvantages of various technologies for the mechanized construction of underground parking, which are used in the leading capitals of the world and offers an analysis of the effectiveness of these technologies for the conditions of Moscow. Among the most commonly used trenchless technologies, parking is considered in mines arranged by mechanized shaft-boring complexes, the construction of support by the method of a screen of pipes and the construction of parking by the method of jackpunching pipes of rectangular cross-section.

scholarly journals The regularities of resistance and flow in pipes and wide channels

2018 ◽  
Vol 193 ◽  
pp. 02034
Author(s):  
Ilya Bryansky ◽  
Yuliya Bryanskaya ◽  
Аleksandra Оstyakova
Keyword(s):  
Comparative Analysis ◽  
Velocity Profile ◽  
Hydraulic Resistance ◽  
Cross Section ◽  
Resistance Coefficient ◽  
Hydraulic Structures ◽  
Hydraulic Characteristics ◽  
Hydraulic Resistance Coefficient ◽  
Logarithmic Velocity Profile

The data of hydraulic characteristics of flow are required to be more accurate to increase reliability and accident-free work of water conducting systems and hydraulic structures. One of the problems in hydraulic calculations is the determination of friction loss that is associated with the distribution of velocities over the cross section of the flow. The article presents a comparative analysis of the regularities of velocity distribution based on the logarithmic velocity profile and hydraulic resistance in pipes and open channels. It is revealed that the Karman parameter is associated with the second turbulence constant and depend on the hydraulic resistance coefficient. The research showed that the behavior of the second turbulence constant in the velocity profile is determined mainly by the Karman parameter. The attached illustrations picture the dependence of logarithmic velocity profile parameters based on different values of the hydraulic resistance coefficient. The results of the calculations were compared to the experimental-based Nikuradze formulas for smooth and rough pipes.

scholarly journals Influence of standard recommendations for the calculation of the column-base connection by socket according to ABNT NBR 9062:2006

2017 ◽  
Vol 10 (1) ◽  
pp. 244-259
Author(s):  
R. PIERALISI ◽  
R. D. MACHADO
Keyword(s):  
Comparative Analysis ◽  
Cross Section ◽  
Parametric Study ◽  
Geometric Characteristics ◽  
Smooth Interface ◽  
Minimum Cross Section ◽  
Precast Structures ◽  
Verification Model ◽  
Column Base

Abstract This work studies the column-base connection by external socket in precast structures. A parametric study of the geometric characteristics of the external socket base with smooth interface is presented. In this parametric study, the consumption of concrete and steel are analyzed. The column cross section, the embedded length of the column in the socket base and the thickness of the wall of the socket base were the variables considered in this study. It was observed that with the increase of the embedded length, the minimum cross section of the main horizontal reinforcement reduces. With this modification, the walls of the socket base that are perpendicular to the direction of the applied loads presented a reduction of their stiffness. Besides the parametric study, this paper presents a verification model. This part of the study shows the possibility to generate abacuses that simplifies the project of the socket base foundation. Moreover, a comparative analysis becomes easier to be accomplished

Poverty in the Dolnośląskie Voivodship

2016 ◽  
Vol 61 (6) ◽  
pp. 70-85
Author(s):  
Agata Girul
Keyword(s):  
Comparative Analysis ◽  
Cross Section ◽  
Objective Assessment ◽  
Subjective Assessment ◽  
Poverty Level ◽  
The Cross

The article presents selected aspects of economic poverty in the Dolnośląskie Voivodship on the background of the country and other voivodships, as well as in the cross-section of the Dolnośląskie powiats in 2013, as compared to 2010. The comparative analysis of poverty level by powiats was presented by means of taxonomic synthetic measure based on a set of three selected diagnostic indicators. A complement to the objective assessment of poverty in the Dolnośląskie Voivodship was a presentation of results of subjective assessment of material situation of households in the voivodships’ cross-section.

scholarly journals ANALYSIS OF THE STRENGTH OF A REINFORCED CONCRETE COMPRESSIVE COLUMN UNDER THE TEMPERATURE OF FIRE / GAISRO TEMPERATŪROS VEIKIAMŲ GNIUŽDOMŲJŲ GELŽBETONINIŲ KOLONŲ ĮTEMPIŲ SKERSPJŪVYJE PASISKIRSTYMO ANALIZĖ

2012 ◽  
Vol 4 (4) ◽  
pp. 320-325
Author(s):  
Aidas Jokūbaitis ◽  
Arnoldas Šneideris
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Comparative Analysis ◽  
Cross Section ◽  
Concrete Column ◽  
Reinforced Concrete Column ◽  
Finite Element Program ◽  
Metallic Shell ◽  
Element Program ◽  
Characteristic Stress

The article discusses principles calculating resistance of a reinforced concrete column to fire. The paper provides column calculation models, the main characteristics of materials and characteristic stress set points applying finite element program SolidWorks. A comparative analysis of stresses in the cross-section of the reinforced concrete column and the reinforced concrete column strengthened with a metallic shell is made. Santrauka Analizuojami gelžbetoninės kolonos atsparumo ugniai skaičiavimo principai. Pateikiami baigtinių elementų programa SolidWorks sudaryti kolonų skaičiuojamieji modeliai, pagrindinės medžiagų charakteristikos ir būdingi įtempių nustatymo taškai. Atliekama gelžbetoninės ir sustiprintos metaliniu apvalkalu gelžbetoninės kolonos įtempių skerspjūvyje lyginamoji analizė.

scholarly journals Time dependence of the luminescence intensity in CdBr2: AgCl,PbBr2 crystals under N2-laser excitation at room temperature

2014 ◽  
Vol 32 (4) ◽  
pp. 604-609 ◽  
Author(s):  
I. Bolesta ◽  
B. Kalivoshka ◽  
I. Karbovnyk ◽  
V. Lesivtsiv ◽  
I. Novosad ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Cross Section ◽  
Empirical Model ◽  
Room Temperature ◽  
Laser Excitation ◽  
Photochemical Reactions ◽  
Luminescence Decay ◽  
Model Parameters ◽  
Suggested Model ◽  
Optical Luminescence

AbstractResults of optical-luminescence studies of polydoped photochromic CdBr2: AgCl,PbBr2 crystals are presented. It is shown that the luminescence decrease vs. time under N2-laser excitation in the range of A-band of Pb2+ absorption is due to photochemical reactions. The empirical model describing the decrease of the luminescence related to silver impurities due to photochemical processes is suggested. Model parameters (trapping cross-section — σ — and the amount of centres destroyed by irradiation — β) were determined using the comparative analysis of experimental and calculated luminescence decay curves.

scholarly journals Increasing the Sensitivity of Protections in Electrical Networks up to 1 kV by Using Microprocessor and Semiconductor Release Tripping Devices

2021 ◽  
Vol 64 (5) ◽  
pp. 393-407
Author(s):  
A. Yu. Kapustsinski ◽  
S. N. Kаnstantsinava
Keyword(s):  
Comparative Analysis ◽  
Electric Power ◽  
Cross Section ◽  
Electrical Networks ◽  
Circuit Breakers ◽  
Electric Networks ◽  
Positive Effects ◽  
Protective Devices ◽  
The Cross ◽  
Negative Phenomena

The paper deals with the problem of increasing the efficiency of the functioning of electric networks up to 1 kV, namely, the possibility of increasing the sensitivity of protections in networks up to 1 kV, which helps to reduce the protection response currents and, accordingly, reduce the cross-section of cable and wire products. The topicality of this problem is shown and the research tasks are defined. Much attention is paid to the concept of selectivity; attention is also paid to the concepts of full and partial selectivity. “Which protective devices can be considered selective?” is a question that is considered and worked out in sufficient depth in the paper. The negative phenomena that occur when ensuring the selectivity of protections in networks up to 1 kV are systematized and described in detail. Based on a comparative analysis of the parameters of circuit breakers with release tripping devices of various types, a solution to this problem is proposed by using circuit breakers with microprocessor and semiconductor release tripping devices. Additional advantages of microprocessor-based circuit breakers are considered and indicated, as well as their disadvantages are indicated, too. The main expected positive effects from the use of circuit breakers with microprocessor release tripping devices are listed, taking into account the fact that this type of circuit breakers is considered as a complex of devices replaced by it. The article can be recommended to employees of electric power specialties working with networks up to 1 kV.

scholarly journals A Review of Policies on Geometric Design of Freeways: Portugal and United States of America

2018 ◽  
Vol 3 (1) ◽  
pp. 11-25
Author(s):  
Lígia Conceição ◽  
Carlos Rodrigues
Keyword(s):  
United States ◽  
Comparative Analysis ◽  
Network Design ◽  
Cross Section ◽  
United States Of America ◽  
Road Network ◽  
Geometric Design ◽  
Geometric Parameters ◽  
Design Standards ◽  
American Policy

Once freeways are classified as arterial systems, they are directly associated to accessibility which has implications on efficiency of a road network design. The geometric design standards influence the freeways’ conception and operation and, therefore, they certainly have an impact on accessibility and the country’s development.A comparative analysis of geometric design of freeways was focused on two policies, both from Portugal and United States of America. The data gathered the geometric parameters regarding the design controls, criteria, elements of design and cross section elements.The major finding of this review infers that the Portuguese Policy imply wider and extensive freeways that arise from strong restraints in the minimum values of geometric parameters. This reflects on higher safety frame. The American Policy is less conservative which may reflect on slender geometric freeways, in comparison with the Portuguese. Therefore, it may be assumed that the American Policy designs less expensive freeways.

scholarly journals Comparative Analysis of 13,14C Induced Reactions on 232Th Target

2021 ◽  
Vol 9 (1) ◽  
pp. 47-53
Author(s):  
Manpreet Kaur ◽  
BirBikram Singh ◽  
Manoj K. Sharma
Keyword(s):  
Experimental Data ◽  
Comparative Analysis ◽  
Comparative Study ◽  
Mass Distribution ◽  
Cross Section ◽  
Cross Sections ◽  
Coulomb Barrier ◽  
Spherical Shape

We have investigated the pairing and magicity effect in context of a comparative study of 13,14C induced reactions on 232Th target at energies in the vicinity of Coulomb barrier. The fission distribution and related properties are explored in terms of the summed-up preformation probabilities. The barrierpenetrability is found to be higher for fragments emitted from 246Cm* formed in 14C+232Th reaction than those emitted in the fission of 245Cm*, leading to higher magnitude of cross-section for earlier case. The DCM calculated fusion-fission cross-sections using ΔR=0 fm are normalised to compare with the available experimental data. The calculations are done for spherical shape of fragments and it will be of further interest to explore the fission mass distribution after the inclusion of deformations.

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