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.
桥式起重机采用工字形截面作为主梁，使用多年后该结构形式的主梁上翼缘板和腹板连接的主焊缝及母材多处产生裂纹，甚至发生主梁断裂事故。
Cracks occurred in the main weld joining the web and upper wing panel of an overhead crane girder of I-section, some of which have expanded to the structure material and even led to girder fracture.
在不同类型荷载作用下，双索面斜拉桥主梁不同位置的截面具有不同的应力分布规律。
The rule of stress distribution is different on different cross sections of the girder of cable-stayed bridge with double cable planes under different type of loads.
以高墩大跨连续刚构桥为研究对象，收集大量已建桥梁主墩的设计类型、截面参数和系梁的设置；
The datum for piers design were collected from a large number of long-span rigid frame bridges which have been built.
介绍了根据梁的强度要求和锅炉主框架的稳定要求进行主框架梁截面的选取方法。
The selection method of the cross section of the main frame beam is described according to the strength requirement of the beam and the stability requirement of the main boiler frame.
介绍了根据梁的强度要求和锅炉主框架的稳定要求进行主框架梁截面的选取方法。
The selection method of the cross section of the main frame beam is described according to the strength requirement of the beam and the stability requirement of the main boiler frame.
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