主梁截面面积变异对斜拉桥跨中挠度和尾索索力具有显著的影响。
The variation of sectional area of girders has influence to the deflection of cable-stayed Bridges at the middle of span and forces of cables anchored at the end of side span.
但风洞试验仍然具有着不可替代的作用，因此，如将数值模拟方法和风洞试验相结合，对桥梁主梁截面的颤振稳定性的评估将更为准确。
Although, wind tunnel tests can't be replaced, it is reasonable to combine the numerical approaches with wind tunnel tests to evaluate the flutter stability of bridge sections.
绝大多数的桥梁中主梁所采用的横截面都是相同的。
Most of the main beams are designed as the single section for the newly-built Bridges.
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