国家体育场看台斜梁属于锯齿形超长悬挑构件，截面尺寸大、精度要求高、施工难度大。
The stand inclined beams of National Stadium, a kind of super-long zigzag cantilever member, have some characteristics which are large section size, great precision and difficult construction.
斜拉索作为大跨斜拉结构重要组成构件，其复杂振动特性会影响着整体结构的受力性能。
As an important component of long span cable-stayed structure, the vibration behavior of inclined cables will affect the mechanical characteristics of the overall structure.
而当斜交角度较大时，墙体主要充当传力构件，与梁协同受力的作用大幅减少。
When the oblique Angle is larger, the wall served as the main transmission components, and synergy ability of force substantially reduced.
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