19-11-2021, 08:27 AM
First, observe the two bars to see if the nodes of the two bars are on two non-collinear nodes and there is no load. If the above two points are met, the two bars are zero.
Second, determine whether the nodes of the two strokes are not collinear.
Third, for three strokes, if a three-stroke node is loaded on one stroke and the two strokes are in a straight line, the third stroke is zero.
Fourth, the relatively symmetric aluminum lighting truss, if it is higher than the symmetrical load, and there is no load on the K-shaped symmetry axis, it means that the diagonal of the node is zero.
The zero rod in aluminium lighting truss refers to a rod with zero axial force under a certain load. Determining the zero reinforcement is the first step in aluminum lighting truss calculation, which will make the subsequent analysis and calculation more smooth. The zero line judgment method usually has some special-shaped nodes in the aluminum truss, and the balance law of these nodes is mastered, and the zero line can be quickly determined, which brings great convenience to the calculation.
Second, determine whether the nodes of the two strokes are not collinear.
Third, for three strokes, if a three-stroke node is loaded on one stroke and the two strokes are in a straight line, the third stroke is zero.
Fourth, the relatively symmetric aluminum lighting truss, if it is higher than the symmetrical load, and there is no load on the K-shaped symmetry axis, it means that the diagonal of the node is zero.
The zero rod in aluminium lighting truss refers to a rod with zero axial force under a certain load. Determining the zero reinforcement is the first step in aluminum lighting truss calculation, which will make the subsequent analysis and calculation more smooth. The zero line judgment method usually has some special-shaped nodes in the aluminum truss, and the balance law of these nodes is mastered, and the zero line can be quickly determined, which brings great convenience to the calculation.