1. Strength: member section material or the ability to connect to resist destruction. Strength calculation is calculated to prevent the structural member or connection due to material strength is exceeded and destruction.
2, carrying capacity: the structure or member will not strength, fatigue and other factors undermine stability or maximum internal forces can bear; or plastic analysis of maximum internal force formed when destruction mechanism; or not suited to achieve internal forces continue to carry the deformation of.
3, brittle fracture: brittle fracture of steel generally refers to no warning plastic deformation under tensile stress and sudden.
4, the value of strength: national standard steel yield point (yield strength) or tensile strength.
5, the design value of strength: steel or intensity value obtained by dividing the standard value of the connection resistance partial coefficients corresponding post.
6, a first-order elastic analysis: do not consider the structure of second order deformation on internal force, the establishment of equilibrium conditions in accordance with the undeformed structure, analysis of internal force and displacement by elastic stage.
7, second order elastic analysis: Consider the second order structure deformation on internal force, the establishment of equilibrium conditions according to the structure after the displacement, internal force and displacement analysis of the structure by an elastic phase.
8, buckling: rod or plate suddenly force the original state does not match the larger axial deformation under pressure, bending moment, shear alone or combined action of destabilization.
9, after buckling strength: after buckling been able to continue to maintain the ability to carry the load.
10, GM thickness ratio: parameter whose value is equal to steel in bending, shear or compressive yield strength divided by the corresponding web flexural, shear or local bearing elastic buckling stress quotient of the square root.
11, the overall stability: under external loads on the entire structure, or whether the member buckling or
Assessment instability.
12, the effective width: width during a cross-sectional strength and stability calculations. Assumed that effective board member
13, the effective width factor: the effective width of the plate and plate actual width ratio.
14, Length: geometric length member between its effective constraint points multiplied by considering the equivalent length of the rod end and the deformation suffered by the coefficient obtained by loading conditions, for calculating the slenderness ratio. When connecting weld strength calculation using the weld length.
15, slenderness ratio: the ratio of the length of the member and the member section to calculate the radius of gyration.
16, conversion slenderness ratio: overall stability calculation of axial compression member, according to the principle of equal critical force, the lattice member in terms of real-time web member is calculated corresponding slenderness ratio or the bend and twist torsional buckling slenderness ratio in terms of bending instability adopted.
17, the supporting force: To reduce the lateral support of the compression member (or compression flange member) free length of the set, is supported by member (or members compression flange) buckling direction, applying the desired to the member (or members subjected Ji edge) lateral force-sectional cut of the heart.
18, no support pure frame: the ability to rely on bending member and connecting nodes, lateral load resistance framework.
19, strong support frame: in the support frame, the support structure (support truss, shear walls, elevator shafts, etc.) greater lateral stiffness, the frame can be considered as non-sway frame of.
20, weak support frame: in the support frame, the support structure lateral stiffness is weak, can not be considered as the framework of the framework no sway.
21, the swing column: within the framework of both ends of the hinge can not resist lateral loads column.
22, column web node domain: RIGID node, column web area frame beams within the beam height range.
23, steel ball bearings: make the structure at the supports can be rotated in any direction as the force-transmitting surface ball bearing hinge or movable seat.
24, rubber bearings: bearing displacement to meet the requirements of thin rubber and steel and other composite products as the delivery support reaction force support.
25, in charge of: steel structural member, the tubular member at a node through continuous, as truss chords.
26, branched pipe: steel structure, disconnected and connected at a node in charge of pipe fittings, such as truss with the competent connected webs.
27, the gap nodes: two toe tube a certain distance away from the managed node.
28 lap node: a node in the steel, two tubes of overlapping nodes.
29, the plane managed node: branch supervisor in the same plane and connected to each other node.
30, the space managed node: node branch pipe and competent in different planes of contact and formation.
31. The composition member: the one or more steel (or steel) composed of interconnected components, such as I-shaped cross section or a combination of box-section beam or column.
32 steel and concrete composite beam: made of concrete and steel beam composite wing by shear connectors can be made overall force beam.