Test Study on Anti-Sliding Coefficient of Friction-Type High-Strength Bolt Connectors

2012 ◽  
Vol 166-169 ◽  
pp. 123-126
Author(s):  
Huai Nian Xing ◽  
Xiao Peng Zhang ◽  
Zeng Li Liu ◽  
Li Qiang Jin
Keyword(s):  
Surface Treatment ◽  
Steel Wire ◽  
Steel Structure ◽  
High Strength ◽  
Treatment Method ◽  
General Description ◽  
Plate Surface ◽  
Design Standards ◽  
High Strength Bolt ◽  
Test Study

Friction-type high-strength bolt connectors are widely used in steel structure. However there has only general description for connection plate surface treatment method in the current Chinese design standards. Some research tests have been designed for different connection plate surface treatment method, which include different painting thickness and different blasting method. The results show that different treatment method has different anti-sliding coefficient. The anti-sliding coefficient would decrease with the surface coating thickness increase. The anti-sliding coefficient would less than 0.50 which the Chinese design standard required when some surface treatment methods are used, such as using steel wire section or using mixture of steel wire section and steel shot to sand blasting. So procedure qualification test is necessary to guide processing in order to ensure the quality of the products. It has certain conference value for practical engineering.

Studying on the Tension Distribution of High Strength Bolted Endplate Connections

2014 ◽  
Vol 696 ◽  
pp. 8-11
Author(s):  
Jun Li ◽  
Cheng Yu Li
Keyword(s):  
Steel Structure ◽  
Steel Structures ◽  
High Strength ◽  
British Standard ◽  
Tension Distribution ◽  
High Strength Bolt ◽  
Practical Engineering ◽  
Endplate Connections ◽  
Bolt Connection ◽  
Distribution Assumption

The tension distribution of high-strength bolted extended endplate connections does not have unified regulations in china, the assuming tension distribution between the "Code for Design of Steel Structure"(GB50017-2003) and the "Specification of High Strength Bolt Connection of Steel Structures"(JGJ82-2011) are different, it may lead some problems in practical engineering. "Specification of High Strength Bolt Connection of Steel Structures"(JGJ82-2011) has given the assumed tension distribution ,but has not given formula .But its distribution assumption is the same as the British Standard ,so the calculation is given below reference to British Standard. Comparing their calculation methods and referencing to the British Standard ,the latter distribution is more reasonable.

scholarly journals Stress corrosion cracking behavior of 20MnTiB high-strength bolts in simulation of humid climate in Chongqing

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Lin Chen ◽  
Juan Wen ◽  
Luyu Zhang ◽  
Zheng Li ◽  
Guangwen Li ◽  
...  
Keyword(s):  
Stress Corrosion ◽  
Steel Structure ◽  
High Strength ◽  
Atmospheric Environment ◽  
Safe Operation ◽  
Humid Climate ◽  
Cracking Behavior ◽  
High Strength Bolt ◽  
Corrosion Experiment ◽  
Effects Of Temperature

Abstract20MnTiB steel is the most widely used high-strength bolt material for steel structure bridges in China, and its performance is of great significance to the safe operation of bridges. Based on the investigation of the atmospheric environment in Chongqing in recent years, the corrosion solution to simulate the humid climate of Chongqing was designed in this study, and the stress corrosion experiment of high-strength bolts in the simulated humid climate of Chongqing was carried out. The effects of temperature, pH and concentration of simulated corrosion solution on the stress corrosion behavior of 20MnTiB high-strength bolts were studied.

The Hanging Point of the Spatial Grid Structure High Strength Bolt Fatigue Notch Effect Analysis

2013 ◽  
Vol 788 ◽  
pp. 554-557
Author(s):  
Xiao Long Wang ◽  
Hong Tao Luo
Keyword(s):  
Simulation Analysis ◽  
Tensile Force ◽  
Steel Structure ◽  
High Strength ◽  
Truss Structure ◽  
Effect Analysis ◽  
Long Span ◽  
Space Truss ◽  
High Strength Bolt ◽  
Space Truss Structure

In recent years, the advantages of light weight steel structure with its widely used in long-span space truss structure industrial workshop. Unlike traditional bridge crane, space truss structure plant can use suspension crane, so the dynamic load of fatigue problem worthy of further study[. The fatigue of the space truss structure including: structure component fatigue, tired of hanging lifting point. At present, the fatigue test is the most reliable research method. This article uses the ANSYS software for welding the hollow ball nodes [2] hanging points of high strength bolts in finite element simulation analysis, observation under the effect of unilateral axial tensile force, the stress distribution of high strength bolt, and calculate the stress concentration factor in thread.

scholarly journals Stress Corrosion Cracking Behavior of 20MnTiB High-Strength Bolts in Simulation of Humid Climate in Chongqing

2021 ◽  
Author(s):  
Lin Chen ◽  
Juan Wen ◽  
Luyu Zhang ◽  
Zheng Li ◽  
Guangwen Li ◽  
...  
Keyword(s):  
Stress Corrosion ◽  
Steel Structure ◽  
High Strength ◽  
Atmospheric Environment ◽  
Safe Operation ◽  
Humid Climate ◽  
Cracking Behavior ◽  
High Strength Bolt ◽  
Corrosion Experiment ◽  
Effects Of Temperature

Abstract 20MnTiB steel is the most widely used high-strength bolt material for steel structure bridges in China, and its performance is of great significance to the safe operation of bridges. Based on the investigation of the atmospheric environment in Chongqing in recent years, the corrosion solution to simulate the humid climate of Chongqing was designed in this study, and the stress corrosion experiment of high-strength bolts in the simulated humid climate of Chongqing was carried out. The effects of temperature, pH and concentration of simulated corrosion solution on the stress corrosion behavior of 20MnTiB high-strength bolts were studied.

PYROTOOL A

Alloy Digest ◽  
1971 ◽  
Vol 20 (4) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
High Strength ◽  
Heat Treating ◽  
Good Ductility ◽  
Extrusion Dies ◽  
Temperature Performance

Abstract PYROTOOL A has been designed to display high strength and good ductility at temperatures up to 1200 F. It is used for high-temperature tooling, extrusion dies, liners, dummy blocks, forging dies, mandrels, holders, etc. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Fe-47. Producer or source: Carpenter.

ALCOA 6061 COLD FINISHED BAR

Alloy Digest ◽  
1998 ◽  
Vol 47 (6) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
High Resistance ◽  
High Strength ◽  
Wire Rod ◽  
Good Workability

Abstract Alcoa 6061 alloy has excellent joining characteristics and good acceptance of applied coatings. It combines relatively high strength, good workability, and high resistance to corrosion. The alloy is widely available. The T8 and T9 tempers offer better chipping characteristics than the T6 temper. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion resistance as well as machining and surface treatment. Filing Code: AL-349. Producer or source: ALCOA Wire, Rod & Bar Division.

DELTALLOY 4032

Alloy Digest ◽  
1998 ◽  
Vol 47 (4) ◽  
Keyword(s):  
Wear Resistance ◽  
Thermal Expansion ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Surface Finish ◽  
Coefficient Of Thermal Expansion ◽  
Single Point ◽  
High Strength ◽  
Corrosion And Wear

Abstract Deltalloy 4032 has good machinability and drilling characteristics when using single-point or multispindle screw machines and an excellent surface finish using polycrystalline or carbide tooling. The alloy demonstrates superior wear resistance and may eliminate the need for hard coat anodizing. Deltalloy 4032 is characterized by high strength and a low coefficient of thermal expansion. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion and wear resistance as well as machining and surface treatment. Filing Code: AL-347. Producer or source: ALCOA Wire, Rod & Bar Division.

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