自锚式悬索桥主梁面内稳定实用简化计算方法的提出

自锚式悬索桥是一种将主缆直接锚固于加劲梁两端，由主梁直接承受主缆中水平分力的悬索桥。自锚式悬索桥的主梁在外荷作用下，处于压、弯状态，随着外荷载增大，主梁的压力增大到一定值时，可能产生平面内的压、弯失稳，因此，自锚式悬索桥主梁的稳定计算是一个十分重要的问题。主要在弹性支承连续梁临界轴力求解方法的基础上．提出自锚式悬索桥主梁临界轴力的实用简化计算方法。编者按]

The practical and simplified method for analyzing self-anchored suspension bridge girder's stability in plane

Self-anchored suspension bridge is a kind of suspension bridge with its main cable anchor on the ends of its girder directly, with the girder bearing the level component of forces from the main cable. Under the action of loads, the bridge's girder will bear press and bend. Along with the load added, the pressure of the girder will amount to a certain value, then its girder maybe lose steady. So how to calculate the stability of the girder is a very important problem. Based on the method of calculating the elastic support continuous beam bridge's steady, a practical and simplified method is provided to analyze girder's stability in plane.