EXPERIMENTAL RESEARCH OF A HINGE UNIT OF STEEL SPATIAL GRID FRAMINGS
Authors:
2.
Platov South-Russian State Polytechnic University, Novocherkassk
(“Urban planning , design of buildings and structures” Department, Candidate of technical sciences, associate professor)
Novocherkassk, Russian Federation
Novocherkassk, Russian Federation
3.
Platov South-Russian State Polytechnic University (NPI)
(professor kafedry «Promyshlennoe i grazhdanskoe stroitel'stvo, geotehnika i fundamentostroenie»)
Russian Federation
Russian Federation
Type:
Article
Pages:
from 73
to 76
Status:
Published
Received:
14.10.2014
Accepted:
01.11.2014
Published:
01.11.2014
Language:
Russian
Keywords:
experimental research, spatial grid framing, a hinge unit,the test set
Abstract (English):
The authors carried out a research of the stress - strain state of the hinge unit of light spatial grid framings of regular structure. The solid model of the hinge unit was created previously and numerical simulation was performed. Calculation identified, that the weak point of the hinge unit is connecting disk. Plastic deformation can arise in the disk during loading. The experimental research was required for verification of results of a pilot study. The test of disk was executed with application of a specially designed installation on universal tensile testing machine in the laboratory of the University. Mechanical characteristics of steel, from which the disk was made, were identified by a certified laboratory destructive control methods in accordance with the GOST. The experimental results are compared with the simulation results. The authors give recommendations for optimizing the design of the hinge unit.
The authors carried out a research of the stress - strain state of the hinge unit of light spatial grid framings of regular structure. The solid model of the hinge unit was created previously and numerical simulation was performed. Calculation identified, that the weak point of the hinge unit is connecting disk. Plastic deformation can arise in the disk during loading. The experimental research was required for verification of results of a pilot study. The test of disk was executed with application of a specially designed installation on universal tensile testing machine in the laboratory of the University. Mechanical characteristics of steel, from which the disk was made, were identified by a certified laboratory destructive control methods in accordance with the GOST. The experimental results are compared with the simulation results. The authors give recommendations for optimizing the design of the hinge unit.
Keywords:
experimental research, spatial grid framing, a hinge unit,the test set
experimental research, spatial grid framing, a hinge unit,the test set
1. Tsaritova N.G. Principles of shaping of spatial grid framings, http://www.gu-unpk.ru/science/journal/sir/archive. The News of OrelGTU series “Building. Transport”, №2/21 (553) 2009 (March-April).
2. Buzalo N.A., Alekseev S.A., Tsaritova N.G. Numerical research of a hinge unit of spatial grid framings. http://naukovedenie.ru/index.php?p=issue-2-14. Identification number of articles in journal: 67TVN214.
3. GOST 7564-97. Rolled steel, general rules for sampling, blanks and samples for mechanical and technological tests. Interstate Council for Standardization, Metrology and Certification. Minsk, 1997.
4. GOST 1497-84* Metals. Methods of tension tests. IPK publishing standards. Moscow
