Civil Engineering Ductility of High Strength Steel Profiles Compared to Soft Steel

Civil Engineering History and Applications of Durable Steel in Civil Engineering Engineering

Production of high-strength steels with suitable properties such as good formability and high strength Von Mises yield criterion in steel building

Production of high-strength steels with suitable properties such as good formability and high strength over 50 years
The recently developed SS. For the production of these steels by mechanisms such as solid solution formation, fine-tuning
Grains and sediments are used in conjunction with microalloy elements. But for lack of recognition
Engineers, their use in the construction industry has not grown significantly. As long as the specifications of this
Steels are not fully evaluated and their performance in seismic loading is not investigated;
The use of these steels that will economize on construction projects will not be developed.
Hence, in this thesis we try to model and numerically analyze rigid connections made from
High-strength steels, seismic adequacy and formability of these types of joints are examined. Method of analysis
The basis of nonlinear static analysis is affected by incremental loads. In this study, there are 4 types of rigid connections
Sheet joint and muscle connection, different RBS (penetration welding, beam cross section)
AISC Seismic and FEMA-bottom welding), all of which are approved by 350 seismic codes
Are examined. Also of the four types of soft steel construction and Provision 2002
It is also used for modeling materials. Anchor Hysteresis Curves - DIN High Resolution Regulations
The period extracted from the results of the analysis of these joints indicates acceptable shake behavior for this type of material.
is. Equivalent viscosity damping and damping values ​​were also calculated for them. The results show -
That by increasing the yield stress of steel, the ductility and damping of plastic joints and dampers decreased.
it is possible. However, comment on the economical use of durable steel in the building industry
Need more investigation d. Because the amount of steel used in the building is due to other factors such as the behavior factor
It also depends on and may eventually lead to a reduction in the weight of steel used (R) of these types of structures.
It saves on construction costs, materials and natural resources.
Also, the use of high strength steel in tensile strength is more than pressure. Because in buckling pressure issues
It is ruled, and if the sections become too small, they lose their economic justification -
Give. Whereas in tensile members not selected on the basis of maximum permissible tensile strength, steel is selected.
Durability can be affordable.
Finally, it can be concluded that the use of high-strength steels is necessarily economical.
 Introduction ................................................. ................................................... ................................................... ........................................... 50
2.2.3 Wheel behavior of welded joints made of high strength steel in collapsible buildings 51
1.2.2.3 Outline of Experiments ..................................... ................................................... ................................................... .............. 52
2.2.2.3 Uniform Tensile Loading ..................................... ................................................... ................................................... .. 53
3.2.3 Axial force and strain wheel diagrams ...................................... ................................................... ................... 53
4.2.2 Strain distribution along the axis of the specimens ....................................... ................................................... .................................... 54
5.2.3 Welding fittings efficiency .......................................... ................................................... ................................................... .......... 55
6.2.3 Accumulated Plastic Deformation Ratio .................................... ................................................... ...................................... 56
Made of high strength steel ............................................. 56 RBS 3-3 Laboratory study of sections
4-3 Laboratory investigation of end-plate fittings made of high-strength steel .................................... ....................................... 59
1-4-3 How to do the tests .......................................... ................................................... ................................................... .............. 60
61 .................................................. ................................................... Results of Experiments (Charts
3.4.3 Laboratory Ductility Assessment ......................................... ................................................... .......................................... 62
5.5 Effect of high strength steels and their geometrical properties on nonlinear bending behavior ................................... ..................................... 63
Bending Behavior ........................................... ................................................... ...........................................