[Teach you a trick] steel structure term-Shenyang Century Weiye Steel Structure Co., Ltd

[Teach you a trick] steel structure term

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2017-01-04

1. Strength: The ability of a member's cross-section material or joint to resist damage. Strength calculations are calculations that prevent structural members or joints from being damaged by the strength of the material being exceeded.

2. Carrying capacity: The maximum internal force that the structure or component will not be able to withstand due to factors such as strength, stability or fatigue; or the maximum internal force when the plastic analysis forms the failure mechanism; or the internal force that is not suitable for the deformation that continues to be carried.

3, brittle fracture: generally refers to the steel structure under the tensile stress state without warning plastic deformation and sudden brittle fracture.

4. Strength standard value: the yield point (yield strength) or tensile strength of the steel specified by the national standard.

5. Strength design value: The value of the standard value of the strength of the steel or joint divided by the corresponding resistance factor.

6. First-order elastic analysis: Regardless of the influence of the second-order deformation of the structure on the internal force, the equilibrium condition is established according to the undeformed structure, and the internal force and displacement of the structure are analyzed according to the elastic stage.

7. Second-order elastic analysis: Considering the influence of the second-order deformation of the structure on the internal force, the equilibrium condition is established according to the structure after the displacement, and the internal force and displacement of the structure are analyzed according to the elastic stage.

8. Buckling: The rod member or the plate member suddenly loses stability due to the large deformation of the axial force, the bending moment and the shearing force, which are inconsistent with the original force state.

9. Strength after web buckling: The ability to maintain the load after web buckling.

10. General height-to-thickness ratio: the parameter, which is equal to the square root of the quotient of the steel bending, shearing or compressive yield strength divided by the corresponding web bending, shearing or local compressive elastic buckling stress.

11. Overall stability: Under the external load, the whole structure or component can be evaluated for buckling or instability.

12. Effective Width: Width when calculating section strength and stability.

13. Effective width coefficient: the ratio of the effective width of the plate to the actual width of the plate.

14. Calculating the length: the geometric length of the component between its effective constraint points is multiplied by the equivalent length of the rod end deformation and the load condition, to calculate the slenderness ratio of the member. The length of the weld used to calculate the weld joint strength.

15. Length to slenderness ratio: the ratio of the calculated length of the component to the radius of gyration of the component section.

16. Converting the slenderness ratio: In the overall stability calculation of the axial compression member, according to the principle of equal critical force, the slender component is converted into the real abdomen component for the calculation of the slenderness ratio or the bending and twisting The torsional instability is converted into the slenderness ratio used when the bending is unstable.

17. Supporting force: The lateral support provided to reduce the free length of the compression member (or the compression flange of the member), in the direction of buckling of the supported member (or the compression flange of the member), the required application The lateral force of the section of the member (or the compressed edge of the member).

18. Unsupported pure frame: A frame that resists lateral loads by virtue of the bending resistance of components and joints.

19. Strong support frame: In the support frame, the support structure (support truss, shear wall, elevator shaft, etc.) has large lateral stiffness resistance, and the frame can be regarded as a frame without lateral displacement.

20. Weak support frame: In the support frame, the support structure is weak in lateral stiffness, and the frame cannot be regarded as a frame without side shift.

21. Swing column: The two ends of the frame are columns that are hinged and cannot resist lateral loads.

22. Column web node domain: the area where the column web is just connected to the node and the column web is within the beam height range.

23. Spherical steel support: A steel spherical surface that can rotate in any direction at the support as a hinged support or movable support for transmitting force.

24, rubber support: rubber and steel sheet and other composite products that meet the bearing displacement requirements as a support for transmitting the reaction force of the support.

25. Supervisor: A pipe fitting that continuously penetrates at a joint in a structural member of a steel pipe, such as a chord in a truss.

26. Branch pipe: A pipe fitting that is disconnected at a joint and connected to a main pipe in a steel pipe structure, such as a web connected to a main pipe in a truss.

27. Gap node: The toe of the two tubes leaves the pipe node at a certain distance.

28. Bonding node: A node where two pipes overlap each other at a steel pipe node.

29. Planar pipe node: A node in which the branch pipe and the supervisor are connected to each other in the same plane.

30. Space pipe node: a pipe node formed by connecting a branch pipe in a different plane to a main pipe.

31. Composite component: A component consisting of more than one steel plate (or section steel) connected to each other, such as an I-shaped section or a box-shaped composite beam or column.

32. Steel and concrete composite beams: beams that can be integrally supported by concrete wing plates and steel beams through shear joints.